| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 379387010 | SUBSTATION OR TERMINAL CIRCUITRY | 62 |
| 20080273690 | Telecommunications Module and an Assembly Including at Least One Telecommunications Module - A telecommunications module ( | 11-06-2008 |
| 20090060166 | CALIBRATING A TELEPHONE HANDSFREE SYSTEM - A calibration device automatically calibrates a telephone hands free system. The device includes a signal processor that processes a received telephone signal that may be converted into audible sound through the hands free system. A first telephone and a second telephone communicate with the signal processor. The first telephone is programmed to transmit a predetermined test signal to the second telephone through a wireless or physical medium. A comparator compares the received test signal to a predetermined reference signal at a hands free interface. The comparison determines a deviation from the reference signal. An adaptor modifies the processing of the digitized aural information based on the deviation. | 03-05-2009 |
| 20100008494 | DRIVE AND POSITIONING METHOD AND SYSTEM FOR AUTOMATED SWITCH MATRIX - A method and system for automating a switch matrix board for cross-connecting any line in a set of input lines to any line in a set of output line, to be used e.g. in automating cross-connects for line pairs in a central office main distribution frame (MDF) of a telecommunication network. The switch matrix ( | 01-14-2010 |
| 20110123018 | PHONE WITH A SECURITY FUNCTION - A phone comprises a microphone, an audio processing unit, and a switch. The phone detects a working status of the phone, and receives user input. The phone controls the switch to connect the microphone or to disconnect the microphone from the audio processing unit according to the working status and the user input. | 05-26-2011 |
| 20110268264 | COMMUNICATION TERMINAL DEVICE ADAPTED TO PHYSICAL CHARACTERISTICS OF TELECOMMUNICATION NETWORK AND METHOD FOR ADAPTING COMMUNICATION TERMINAL DEVICE TO PHYSICAL CHARACTERISTICS OF TELECOMMUNICATION NETWORK - The communication terminal device includes a handset, a central controller, a telephone network adaptor unit for converting analog signals transmitted/received between telecommunication network and the communication terminal device into digital signals, an interface unit physically isolating the central controller from the telephone network adaptor unit, and transmitting/receiving the converted digital signals between the central controller and the telephone network adaptor unit, and a telephone circuit unit which transmits the voice signals generated by processing the digital signals received from the telephone network adaptor unit to a handset through the interface unit and transmits the digital signals generated by processing the voice signals received from the handset to the telephone network adaptor unit through the interface unit. The telephone network adaptor unit is controlled by the central controller and changes the physical characteristics of the analog signals to be adapted to the physical characteristics of the telecommunication network. | 11-03-2011 |
| 20110286593 | System and Method of Adjusting the Sound of Multiple Audio Objects Directed Toward an Audio Output Device - Embodiments of the present invention include methods and apparatuses for adjusting audio content when more multiple audio objects are directed toward a single audio output device. The amplitude, white noise content, and frequencies can be adjusted to enhance overall sound quality or make content of certain audio objects more intelligible. Audio objects are classified by a class category, by which they are can be assigned class specific processing. Audio objects classes can also have a rank. The rank of an audio objects class is used to give priority to or apply specific processing to audio objects sin the presence of other audio objects of different classes. | 11-24-2011 |
| 20150110262 | Method and Apparatus for Controlling Call Audio Channel on Communications Terminal, and Communications Terminal - The present invention is applicable to the field of communications technologies, and provides a method and apparatus for controlling a call audio channel on a communications terminal, and a communications terminal. In the method, first, a voice signal received by a microphone of audio devices connected to a communications terminal is detected, where the audio devices include an internal audio device and at least one external audio device; then, an audio device with a received voice signal meeting a preset condition is selected as a target audio device; finally, the target audio device is set as a current call audio channel. In this way, a user neither needs to remember an audio device that has been connected nor needs to manually switch to a desired call audio channel, which brings convenience to the user. | 04-23-2015 |
| 379387020 | Conversion of signal form (e.g., A/D, frequency or phase) | 2 |
| 20120063587 | MULTI-MICROPHONE SYSTEM TO SUPPORT BANDPASS FILTERING FOR ANALOG-TO-DIGITAL CONVERSIONS AT DIFFERENT DATA RATES - One exemplary problem addressed by the techniques disclosed herein is that the A-to-D converter of the broad-band audio codec that is being used more frequently in IP telephony, G.722, samples the analog audio source 16,000 times per second, rather than 8,000. Since all G.722-capable telephones must continue to be G.711-capable, one problem is that a microphone that provides appropriate bandpass filtering for G.722 encoding fails to provide adequate filtering for G.711. One exemplary aspect is therefore directed to telephones that must be able to switch back and forth between narrow-band digital audio encoding in which the A-to-D converter samples the audio stream 8,000 times per second, and a wide-band audio encoding in which the A-to-D converter samples the audio stream 16,000 times per second. This is accomplished using one or more of a plurality of switched microphones, a filter and a modification of the resonant frequencies of a handset. | 03-15-2012 |
| 20130163747 | MULTI-MICROPHONE SYSTEM TO SUPPORT BANDPASS FILTERING FOR ANALOG-TO-DIGITAL CONVERSIONS AT DIFFERENT DATA RATES - One exemplary problem addressed by the techniques disclosed herein is that the A-to-D converter of the broad-band audio codec that is being used more frequently in IP telephony, G.722, samples the analog audio source 16,000 times per second, rather than 8,000. Since all G.722-capable telephones must continue to be G.711-capable, one problem is that a microphone that provides appropriate bandpass filtering for G.722 encoding fails to provide adequate filtering for G.711. One exemplary aspect is therefore directed to telephones that must be able to switch back and forth between narrow-band digital audio encoding in which the A-to-D converter samples the audio stream 8,000 times per second, and a wide-band audio encoding in which the A-to-D converter samples the audio stream 16,000 times per second. This is accomplished using one or more of a plurality of switched microphones, a filter and a modification of the resonant frequencies of a handset. | 06-27-2013 |
| 379388010 | For loudspeaking terminal | 10 |
| 20090080642 | Enterprise-Distributed Noise Management - A method is disclosed that enables the managing of the overall sound level in an enterprise environment where telephones are used. A data-processing system such as a private branch exchange monitors whether one or more telephones are in use. Based on detecting when a first endpoint is in use and, therefore, when the endpoint's user is present, the private branch exchange controls one or more characteristics of the loudspeaker volume at a second endpoint. By accounting for other considerations such as the spatial closeness between the endpoints, which can be determined from office dimensions stored in a database, the private branch exchange of the illustrative embodiment is able to determine the degree of sound that is coupling over from one endpoint location to another. On a larger scale, the exchange is able to control the loudspeaker volumes of all of the endpoints in the workplace area. In doing so, the exchange manages the overall acoustic noise present. | 03-26-2009 |
| 379388020 | Speakerphone with build-in microphone | 5 |
| 20090122974 | Sound Pick-Up Method and Device, In Particular for Handsfree Telephone Terminals - The invention relates to processing signal for improving a sound pick-up in telephone and/or videophone units. The inventive method consists in comparing ( | 05-14-2009 |
| 20110150209 | Full duplex telephone system employing automatic level control for improved digital signal processing of audio signals - Audio processing systems, such as full duplex digital telephone systems, are provided in which analog automatic level control (ALC) circuitry is employed to automatically control and stabilize the microphone output audio signal levels to a constant level for optimal digital signal processing. For example, an audio communication device ( | 06-23-2011 |
| 20150341479 | SYSTEM AND METHOD FOR ADJUSTING HANDS-FREE PHONE - A communications device having a user configurable speakerphone feature is provided. A user may be provided with a plurality of selectable settings for configuring the operation of a microphone or the processing of speech. For example, a user may select settings to filter ambient noise for a cleaner sound or increase a microphone's sensitivity in a conference call environment. In one embodiment, the user may select a setting that changes a microphone level or microphone operating range. When the microphone detects speech, the speech may be processed in accordance with user selected processing settings. For example, a user may select settings to specify a gain control, a frequency response, or an activity threshold. Thus, a user may configure a speakerphone to improve sound quality on the receiving end. | 11-26-2015 |
| 379388030 | Automatic gain or volumn (AGC or AVC) | 2 |
| 20090022305 | PHONE CALL MUTE NOTIFICATION - A phone call mute notification applies an aural effect to the user's speech, other parties' speech, non-speech, or combinations thereof. The phone call mute notification does not render speech unintelligible and may provide a constant indication that the phone call mute function is active. Furthermore, the phone call mute notification does not serve as a distraction to the user, because the aural effect may be applied to speech itself rather than drawing the attention of the user away from the speech. | 01-22-2009 |
| 20110058665 | Mobile Terminal Device, Computer-Readable Recording Medium, and Computer Data Signal - Even if an external output device like an earphone is disconnected during outputting of reproduced recorded contents, the recorded contents can be consecutively output at the time of subsequent reproduction. When an earphone connection detector detects that an earphone is disconnected during the reproduction operation of reproducing and outputting audio and image information in a recording section with the earphone being connected, a CPU performs control in such a manner as to stop the reproduction operation. When the earphone connection detector detects that the earphone is connected while the reproduction operation is stopped, the CPU resumes reproducing the audio and image information in the recording section at the stop position. | 03-10-2011 |
| 379388040 | Voice control of transmission direction | 1 |
| 379388070 | Controlling acoustic feedback | 1 |
| 20160127527 | Controlling Operational Characteristics of Acoustic Echo Canceller - A controller for an acoustic echo canceller is described. The controller includes a noise estimator configured to estimate a level of noise that is comprised in a microphone signal relative to an echo component, estimated by the acoustic echo canceller, comprised in the microphone signal. The controller further includes a control module configured to control the acoustic echo canceller in dependence on that estimate. | 05-05-2016 |
| 379390010 | Amplification or attenuation level control | 3 |
| 20100080379 | INTELLIGIBILITY BOOST - A user of a communications device is given the ability to conveniently control the quality of the sound he is hearing during a call. An acoustic transducer interface circuit of the device has volume settings that are set by the user actuating a volume adjustment button or switch. In addition, the device has one or more intelligibility boost settings that are also selected by actuating the volume adjust button. Once the device has been signaled into the highest volume setting in response to actuation of the button in a given direction, and the next actuation of the button is also in the given direction, a downlink voice signal processor of the device responds to the next actuation by changing its audio frequency response to boost intelligibility of the far end user's speech being heard by the near end user. Other embodiments are also described and claimed. | 04-01-2010 |
| 20110222682 | Continuous Power Transfer Scheme for Two-Wire Serial Link - The invention provides a single digital communication link between system-side and line-side circuitry in a DAA, capable both of carrying data signals and of transferring a substantial amount of power to the line-side circuitry. The invention comprises a system-side interface circuit, a line-side interface circuit, and an isolation barrier including a transformer. Each interface circuit is capable of connection to an upstream communication circuit (either line-side or system-side), from which it may receive data signals to be transmitted across the isolation barrier to the other interface circuit, and to which it may pass data signals received across the isolation barrier from the other interface circuit. The line-side interface circuit may further include a rectifier and a storage device. | 09-15-2011 |
| 20130259221 | TELEPHONE AND VOICE ADJUSTMENT METHOD FOR TELEPHONE - A telephone includes: a housing; a voice output device that is placed inside the housing and produces voice; a contact detection unit that detects a position of an object that contacts the housing; a position offset calculation unit that calculates a distance between the contact position of the object detected by the contact detection unit and the voice output device; and a voice adjustment unit that adjusts the voice produced from the voice output device, depending on the distance. | 10-03-2013 |
| 379391000 | Sidetone control or hybrid circuit (e.g., induction coil) | 5 |
| 20080298577 | METHOD AND SYSTEM FOR PROCESSING COMMUNICATION SIGNALS IN A COMMUNICATION SYSTEM - Disclosed are a method and an apparatus for processing communication signals in a telephony or communication system. In various embodiments, the method or the apparatus comprises identifying a first signal which comprises an incoming communication signal and a feedback signal, controlling a logic for cancelling or suppressing a feedback effect based at least in part upon the first signal, processing the first signal using an adaptive filter based at least in part upon the first signal and a result of controlling the logic for cancelling or suppressing the feedback effect, and causing the processed first signal to be transmitted to a first output device. In some embodiments, the method and the apparatus further comprise identifying a communication context which the communication system is currently in. In some embodiments, the method and apparatus further comprise determining a filter coefficient for the adaptive filter. | 12-04-2008 |
| 20090110184 | System to provide real loops for sidetone measurement with analog telephones - A real loop and method for using the loop for testing sidetone signal level are provided. The loop is modeled from a coil of cable to represent a straight wire loop. Several conducting wires in a cable may be used. The cable may be configured in a coil and may have a first end and a second end exposed for electrical connections to an even number of wires. Each wire in the even number of wires may be capable of being identified as the same wire on each of the first and second ends of the cable. One or more pairs of wires in the even number of wires may be electrically connected to form an electrical loop. An electrical current passes in opposite directions in the wires in each pair of wires. | 04-30-2009 |
| 20090316880 | Purposeful Degradation of Sidetone Audio for Providing Feedback about Transmit-Path Signal Quality - An enhanced sidetone system is disclosed which provides the user of a telecommunications terminal, while speaking, with immediate audio feedback that corresponds to what the far-end party is probably hearing. The sidetone system continuously samples the input speech signal from the user and also obtains signal quality statistics of the transmission path. These statistics can include descriptions of network quality-of-service characteristics (e.g., packet loss rate, etc.) and/or media quality characteristics (e.g., audio distortion due to echo cancellation, etc.). These statistics enable the disclosed technique to determine whether the transmitted signal quality is acceptable. When an unacceptable condition in transmit-path signal quality is detected, the technique modifies the traditional (main) sidetone signal. For example, a delayed sidetone signal can be transmitted back to the user's terminal, in addition to the main sidetone signal generated, so that the user perceives the combination of sidetone signals as a hollow-sounding, objectionable sound. | 12-24-2009 |
| 20110051923 | METHOD, DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM FOR PRODUCING DIGITAL SIDE TONE - A method, device, and computer-readable storage medium for providing digital side tone are disclosed. These embodiments are directed toward processing digital side tone in a secondary processing unit external to a primary processing unit that includes the main digital signal processor, thereby reducing delay in producing side tone and freeing up processing resources in the primary processing unit. In an environment where the sampling rate of a digital-to-analog converter in the secondary processing unit is an integer multiple of the sampling rate of an analog-to-digital converter in the secondary processing unit, the components of the secondary processing unit are made to operate such that the digital side tone signal and the main tone signal are equal in sampling frequency and number of samples. | 03-03-2011 |
| 379392000 | Suppression (e.g., antisidetone) | 1 |
| 20220141325 | COMMUNICATION DEVICE AND OUTPUT SIDETONE ADJUSTMENT METHOD THEREOF - A communication device and an output sidetone adjustment method thereof are disclosed. The method includes the steps of: receiving a far-end sound; receiving a near-end sound to form a sidetone and obtaining an average input volume of the near-end sound; detecting ambient noise of the near-end sound; analyzing an average noise volume and a noise frequency band of the ambient noise to determine whether the average noise volume of the ambient noise is higher than the average input volume; if yes, adjusting the volume of the sidetone in a specific frequency band by increasing it by a first gain value to form an adjusted sidetone, wherein the specific frequency band and the noise frequency band of the ambient noise belong to the same frequency band or different frequency bands; and outputting the adjusted sidetone and the far-end sound. | 05-05-2022 |
| 379392010 | Noise suppression | 18 |
| 20090028320 | INDUCTIVE COUPLING FOR COMMUNICATIONS EQUIPMENT INTERFACE CIRCUITRY - A system for improving the attenuation of an undesired signal found in a differential signal path through the use of inductive coupling. The system includes a primary inductor, a secondary inductor, and a filter. The primary inductor and the secondary inductor operably couple an input differential signal pair to an output differential signal pair, and the filter attenuates an undesired signal in the output differential signal pair. | 01-29-2009 |
| 20090080643 | Telephone System Having Reduced Sensitivity To RF Interference And Related Methods - A telephone to be connected to a wireline having reduced sensitivity to RE interference over a predetermined frequency range from an adjacent mobile wireless communications device may include a transmit amplifier, a receive amplifier, an audio input transducer connected to the transmit amplifier, and an audio output transducer connected to the receive amplifier. The telephone may further include an RE shield(s) surrounding the audio input transducer and the audio output transducer for reducing RE interference over the predetermined frequency range from the adjacent mobile wireless communications device. Moreover, the telephone may also include at least one RE audio input filter element connected to the audio input transducer and at least one RE audio output filter element connected to the audio output transducer, both of which are also for reducing RE interference over the predetermined frequency range from the adjacent mobile wireless communications device. | 03-26-2009 |
| 20100104088 | NOISE ESTIMATION APPARATUS, CALLING APPARATUS, AND NOISE ESTIMATION METHOD - In a noise estimation apparatus, a microphone converts sound into an electric signal and outputs the electric signal as a sound signal. A noise estimator performs estimation for estimating a magnitude of a noise component contained in the sound signal so as to generate an estimated noise signal. The noise estimator limits a minimum value of a noise level of the noise component contained in the sound signal during the estimation to a predetermined default value, and integrates the noise level having the limited minimum value to generate the estimated noise signal. | 04-29-2010 |
| 20100111290 | Call Voice Processing Apparatus, Call Voice Processing Method and Program - There is provided a call voice processing apparatus including an input correction unit that corrects characteristics of a first input sound input from a first input apparatus to characteristics of a second input sound input from a second input apparatus, a sound separation unit that separates the second input sound into a plurality of sounds, a sound type estimation unit that estimates sound types of the plurality of sounds separated by the sound separation unit, a mixing ratio calculation unit that calculates a mixing ratio of each sound in accordance with the sound type estimated by the sound type estimation unit, a sound mixing unit that mixes the plurality of sounds separated by the sound separation unit in the mixing ratio calculated by the mixing ratio calculation unit, and an extraction unit that extracts a specific sound from the first input sound corrected by the input correction unit. | 05-06-2010 |
| 20100246802 | METHOD AND SYSTEM FOR COMPENSATING AUDIO SIGNALS DURING A COMMUNICATION SESSION - An approach is provided for compensating audio signals during a communication session by receiving audio signals from parties to the communication session, sampling the audio signals to determine signal level and noise floor, and compensating the audio signals to bring each signal to approximately an equal level based on the determination. | 09-30-2010 |
| 20100246803 | Bandwidth extension apparatus for automatically adjusting the bandwidth of inputted signal and a method therefor - A bandwidth extension apparatus can generate from an inputted speech signal a bandwidth-extended signal whose bandwidth is automatically adjusted according to the surrounding hearing situation by means of a parameter. The apparatus has a surrounding characteristic predictor for predicting the characteristic amount of the surrounding sound of the phone terminal on which the apparatus is installed; an adjustment amount predictor for comparing the characteristic amount with the parameter to predict the adjustment amount for the parameter; a speech characteristic predictor for predicting the characteristic amount of the inputted speech signal; and an adjustment amount determiner for determining an adjustment amount for updating the parameter based on the characteristic amount of the surrounding sound and the inputted speech signal. | 09-30-2010 |
| 20110075832 | Voice band extender separately extending frequency bands of an extracted-noise signal and a noise-suppressed signal - A voice band extender includes a component separator for receiving a band-limited speech signal over a telecommunications line to separate the speech signal into a noise-suppressed signal and an extracted-noise signal, a noise-suppressed signal component extender for adding a signal having its frequency band higher than that of the noise-suppressed signal to thereby produce an extended noise-suppressed signal, an extracted-noise signal component extender for producing an extended extracted-noise signal, a signal intensity adjuster for adjusting signal intensity of either or both of the extended noise-suppressed signal and the extended extracted-noise signal, and a synthesizer for combining the extended noise-suppressed signal and the extended extracted-noise signal obtained by the intensity adjustment. The respective frequency bands of the extracted-noise signal and the noise-suppressed signal are thus extended. | 03-31-2011 |
| 20110135086 | METHOD AND ELECTRONIC DEVICE FOR IMPROVING COMMUNICATION QUALITY BASED ON AMBIENT NOISE SENSING - A method and an electronic device for communication quality improvement based on ambient noise sensing are provided for improving communication quality. The method includes: during a call, dynamically setting a noise reduction mode in response to the varying of an ambient noise amount of at least one audio signal received by the electronic device. The setting step includes: during the call, dynamically determining whether the ambient noise amount indicates the needs of the application of noise reduction. If the ambient noise amount indicates the needs of the application of noise reduction, then one of a plurality of noise reduction levels is selected according to the ambient noise amount, and the noise reduction mode is set according to the selected noise reduction level, wherein the noise reduction levels include at least two levels corresponding to two different amounts of noise reduction. | 06-09-2011 |
| 20120069988 | TELEPHONE SYSTEM HAVING REDUCED SENSITIVITY TO RF INTERFERENCE AND RELATED METHODS - A telephone to be connected to a wireline having reduced sensitivity to RF interference over a predetermined frequency range from an adjacent mobile wireless communications device may include a transmit amplifier, a receive amplifier, an audio input transducer connected to the transmit amplifier, and an audio output transducer connected to the receive amplifier. The telephone may further include an RF shield(s) surrounding the audio input transducer and the audio output transducer for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device. Moreover, the telephone may also include at least one RF audio input filter element connected to the audio input transducer and at least one RF audio output filter element connected to the audio output transducer, both of which are also for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device. | 03-22-2012 |
| 20120114114 | METHOD AND DEVICE FOR CANCELLING INTERFERENCE BETWEEN A SIGNAL CARRIED BY A CARRIER POWER LINE AND A SIGNAL CARRIED BY A TELEPHONE LINE - The present invention concerns a method and device for cancelling interference between a signal carried by a carrier current line of a system distributing digital services at the home of a subscriber and a signal carried by a telephone line of said system that is situated close to the carrier current line. The method is characterised in that it consists of obtaining the signal carried by the carrier current line, filtering it in order to obtain an estimate of the signal that disturbs the signal carried by the telephone line and subtracting this estimate from the signal carried by the telephone line. | 05-10-2012 |
| 20120140917 | ACTIVE NOISE CANCELLATION DECISIONS USING A DEGRADED REFERENCE - Active noise cancellation (ANC) circuitry is coupled to the input of an earpiece speaker in a portable audio device, to control the ambient acoustic noise outside of the device and that may be heard by a user of the device. A microphone is to pickup sound emitted from the earpiece speaker, as well as the ambient acoustic noise. Control circuitry deactivates the ANC in response to determining that an estimate of how much sound emitted from the earpiece speaker has been corrupted by noise indicates insufficient corruption by noise. In another embodiment, the ANC decision is in response to determining that an estimate of the ambient acoustic noise level is greater than an estimate of the anti-noise produced by the ANC. Other embodiments are also described and claimed. | 06-07-2012 |
| 20120219145 | ETHERNET ISOLATOR FOR MICROPHONICS SECURITY AND METHOD THEREOF - A system and method for providing microphonic isolation on a transmission line. The transmission line has a first part and a second part. The first part of transmission line carries a data signal and a microphonic signal. The microphonic signal has frequencies that include those in a range of substantially 20 Hz to substantially 20 kHz. The system includes an isolation apparatus. The isolation apparatus has an input in electrical communication with a first part of the transmission line, an output in electrical communication with the second part of the transmission line, and a filter in electrical communication with the input and the output. The filter is arranged to substantially remove the microphonic signal received at the input from first part of transmission line and pass the data signal to the output. | 08-30-2012 |
| 20140056422 | NOISE SUPPRESSION SYSTEM - A noise suppression system is applicable to a first phone, to reduce noise received by a microphone of the first phone. The microphone receives sound signals with different frequencies and converts the sound signals to electrical signals. The noise suppression system includes a selection circuit, an amplifying circuit, and a processing circuit. The selection circuit selects special electrical signals with frequency between 65 hertz to 1.1 kilohertz from the electrical signals. The amplifying circuit amplifies the selected electrical signals. The processing circuit stores a first preset value and a second preset value less than the first preset value. If the value of the amplified electrical signal is greater than or equal to the first preset value, or less than or equal to the second preset value, the processing circuit outputs the amplified electrical signal. | 02-27-2014 |
| 20140133647 | SPEAKER PHONE NOISE SUPPRESSION METHOD AND APPARATUS - Systems and methods for removing noise from an audible signal are provided. More particularly, a vibration sensor is used to obtain a vibration signal from an environment including a communication device. The signal from the vibration sensor is combined with a signal from a microphone associated with the communication device, to create a modified audible signal. More particularly, a filtering or subtraction process can be performed with respect to the audible signal, at a time corresponding to an event detected as part of the vibration signal. The resulting modified audible signal can have reduced noise as compared to the original audible signal. | 05-15-2014 |
| 20140307867 | ANALOG FRONT-END TRANSMITTER AND A CONNECTION METHOD OF AN X-DIGITAL SUBSCRIBER LINE HAVING A PRE-DISTORTION MECHANISM - A Pre-distortion mechanism for transmit path non-linearity in xDSL AFE is disclosed in the present invention. The AFE includes a line driver and a pre-distortion signal generator. The line driver receives an input differential signal and generates an output differential signal. The input differential signal includes a first input signal and a second input signal. The output differential signal includes a first output signal and a second output signal. The line driver receives the first input signal to generate the first output signal and receives the second input signal to generate the second output signal. The pre-distortion signal generator is coupled to input ends and output ends of the line driver. The pre-distortion signal generator generates a pre-distortion signal according to a first difference between the first input signal and the first output signal, and a second difference between the second input signal and the second output signal so as to adjust an output state of the analog front-end transmitter having a pre-distortion mechanism. | 10-16-2014 |
| 20150086005 | AUDIO SIGNAL PROCESSING IN A COMMUNICATION SYSTEM - Communications equipment for use by a call centre to enable communications between the call centre and one or more user devices is provided, with the communications equipment comprising audio processing circuitry for processing audio signals received from the user devices over a communications network, wherein the processing circuitry is configured to perform acoustic echo cancellation and/or noise suppression and/or dereverberation processing on the received audio signals to cancel acoustic echoes and/or suppress noise and/or suppress reverberation that is present in the audio signals received from the user device. | 03-26-2015 |
| 20150312390 | Ergonomic tubular anechoic chambers for use with a communication device and related methods - Disclosed, in general, are devices that provide a substantially sound-tight chamber over a sound source while absorbing fields of sounds from the sound source. In general, the devices feature: an anechoic chamber that is configured to receive a sound source in a substantially sound-tight manner; and an anechoic channel that is in fluid communication with the ambient atmosphere. The anechoic chamber is adapted to capture air containing sound energy generated by the sound source, and distribute the air about an internal surface area on the inside of the chamber, wherein the internal surface area is sufficiently large to dampen or otherwise absorb the sound energy. Specifically, the secondary anechoic chamber collects air from in-between the first and second anechoic chambers around the perimeter of the mouth, in the low decibel environment away from the voice blast high decibel areas in front of the mouth. Voice air from speaking fills up the primary anechoic cup chamber and once the primary anechoic cup chamber is full of air, then the air is channeled to the secondary anechoic chamber and into the suppressor channel where the voice air will exit the telephone with as low of decibel energy left as possible. Additionally, the apparatus may feature a circuit board with a telephone cord female jack connection and a plurality of switches, wherein the telephone female jack mounted on the circuit board receives a quick release levered male jack connected to a wire from the telephone base set. | 10-29-2015 |
| 20160198030 | BACKGROUND NOISE REDUCTION IN VOICE COMMUNICATION | 07-07-2016 |
| 379393000 | Hold circuit | 1 |
| 20090161859 | Method and Apparatus for Intelligent Processing of Suspend and Resume Operations in a Call Center - Methods and apparatus are provided for processing “on hold” commands in a call center. A communication dialog is processed by storing a checkpoint containing a context of the communication; monitoring the communication dialog for an “on-hold” condition; and suspending the communication dialog when the “on-hold” condition is detected The “on-hold” condition can be detected by monitoring telephony signaling. The communication dialog can optionally be returned to a restart point, such as a checkpoint, when the “on-hold” condition is detected. The communication dialog can be monitored for an “off-hold” condition and restarted from a checkpoint when the “off-hold” condition is detected. A resume context message can optionally be provided to the caller when the “off-hold” condition is detected. | 06-25-2009 |
| 379394000 | Impedance matching or line equalizing | 2 |
| 20090180608 | USER-CONTROLLABLE EQUALIZATION FOR TELEPHONY - A system, method and apparatus is described that permits a user to configure or select the manner in which an audio signal transmitted or received over a telephony system, such as a wideband telephony system, is shaped or equalized. An implementation of the present invention allows a user to configure or select equalization control parameters on a call-by-call basis. Furthermore, an implementation of the present invention allows a user to associate equalization control parameters with a party initiating a call and/or a party receiving the call, thereby facilitating automated equalizer adjustment at call connection based on an identification of the calling party and/or the called party. | 07-16-2009 |
| 20120063588 | METHOD FOR CORRECTING TELEPHONE SIGNAL DEGRADATION CAUSED BY THE LENGTH OF THE ANALOG LINE VIA THE RECEIVER - The present invention relates to the field of telephony and specifically to a method for correcting the degradation of telephone signal quality caused by analogue lines. The invention describes managing, via the receiver, a specific correction of telephone signal degradation caused by the length of the analogue line between the parties. Said line length between the receiver and the telephone switchboard to which said receiver is connected is stored in the receiver. Advantageously, the line lengths between the receiver of the called party and the corresponding switchboard are stored, for example in the director of the apparatus. During the call, said line length is taken into account by a specific correction means for said correction inside the receiver. | 03-15-2012 |
| 379395000 | Amplifying (e.g., AGC or AVC) | 4 |
| 20090304176 | CONFIGURATION FOR ANTIMICROBIAL MULTI-HANDEST TELEPHONE SYSTEM - A multi-handset telephone system has a first telephone handset having an antimicrobial agent situated thereon, a first amplifier that provides built in hearing impaired support, and a first integrated volume control actuator. Further, the multi-handset telephone system has a second telephone handset having the antimicrobial agent situated thereon, a second amplifier that provides built in hearing impaired support, and a second integrated control actuator. The second telephone handset is operably connected to the first handset through a handset cord such that a first user speaks on the first handset and the second user speaks on the second handset to have a face-to face conversation with each other at the same time as having a conversation with a third party remotely. | 12-10-2009 |
| 20100104089 | xDSL MULTISTANDARD DRIVER CIRCUIT - An electric circuit for amplifying an xDSL signal comprises an operational amplifier and a signal monitoring circuit. The operational amplifier is configured to amplify the xDSL signal, is powered by a variable voltage supply and has a gain which is adjustable by an operating mode control signal. The signal monitoring circuit is activated by the operating mode control signal and is configured, when activated by the operating mode control signal, to generate a control signal to adjust the voltage of the variable voltage supply in order to adjust the maximal signal swing of the output signal of said operational amplifier. The control signal is generated by comparing the amplitude of the xDSL signal applied to the electric circuit with an amplitude threshold value. | 04-29-2010 |
| 20120288083 | SYSTEMS AND METHODS FOR FORMING ISOLATED DEVICES IN A HANDLE WAFER - A method for through active-silicon via integration is provided. The method comprises forming an electrical device in a handle wafer. The method also comprises forming an isolation layer over the handle wafer and the electrical device and joining an active layer to the isolation layer. Further, the method comprises forming at least one trench through the active layer and the isolation layer to expose a portion of the handle wafer and depositing an electrically conductive material in the at least one trench, the electrically conductive material providing an electrical connection to the electrical device through the active layer. | 11-15-2012 |
| 20140079212 | SIGNAL PROCESSING APPARATUS AND STORAGE MEDIUM - There is provided a signal processing apparatus including a recognition section configured to recognize at least one of a state of a first user, a state of a second user, and a relationship between the first user and the second user, a signal processing unit configured to perform signal processing on voice information corresponding to voice articulated by the first user, or voice information corresponding to voice that is transmitted from a remote location and articulated by the second user, and a control unit configured to control the signal processing unit to perform signal processing on at least one of the voice information corresponding to the voice articulated by the first user, and the voice information corresponding to the voice that is transmitted from the remote location and articulated by the second user, in accordance with a recognition result of the recognition section. | 03-20-2014 |
| 379395010 | Power control or detection circuit | 10 |
| 20090041228 | REMOTE BATTERY REPLACEMENT NOTIFICATION SYSTEM AND METHOD - A remote battery replacement notification system ( | 02-12-2009 |
| 20090154691 | Control circuit for controlling a DC supply voltage for a terminal - A control device for controlling a supply voltage which can be switched between a constant line current operation and a constant line voltage operation, wherein a line current, which consists of a direct current for supplying the terminal and of an alternating current for transmitting information, flows via a subscriber line of a terminal, comprising a sensing circuit for sensing an analogue input voltage dependent on the line current, a subtractor which, in the constant line current operation, subtracts an analogue feedback voltage dependent on an adjustable nominal direct-current value from the sensed input voltage for generating an analogue difference voltage, an analogue/digital converter for converting the generated analogue difference voltage into a digital difference voltage value, a digital low-pass filter for filtering a sequence of control error values out of the generated sequence of difference voltage values, a controller for generating a control value in dependence on the filtered-out sequence of control error values, and comprising a first digital/analogue converter which, in the constant line current operation, converts the control value in each case generated by the controller into the analogue direct voltage for supplying the terminal. | 06-18-2009 |
| 20090168992 | Monolithic Solid State Relay Circuit for Telecom Wireline Applications - Methods and apparatus for utilizing a solid state relay arrangement as a part of a protection scheme for a telecom wireline card suitable are disclosed. According to one aspect of the present invention, a line card that is suitable for use in an optical network device includes an electrical port, a plurality of input lines, an output line, and protection circuitry. The protection circuitry switches or multiplexes the plurality of input lines into the output line, and includes a solid state relay arrangement and power isolation circuitry. The power isolation circuitry provides a high impedance to power rails associated with the solid state relay arrangement, and the solid state relay arrangement includes at least one N-channel field effect transistor (FET), at least one protection diode, and at least one charge pump. | 07-02-2009 |
| 20100119054 | TELEPHONE INTERFACE CIRCUIT - A telephone interface circuit comprises: a first transistor which switch-controls a connection between a speech circuit and a pair of subscriber lines; a second transistor which controls an on/off state of the first transistor; a positive feedback circuit which connects a collector terminal of the first transistor to a base terminal of the second transistor; and an internal power source which supplies current for driving the second transistor. A circuit constant is set such that the first transistor is to operate in a saturated region when a voltage in a range of voltage for normal use is applied in between the pair of the subscriber lines, and such that the first transistor is to operate in an unsaturated region when an overvoltage exceeding the range of voltage for normal use is applied in between the pair of the subscriber lines. | 05-13-2010 |
| 20100310064 | POWER MODE CONTROL FOR A COMMUNICATION DEVICE AND METHOD FOR USE THERWITH - A power status signal is received in an integrated circuit that indicates an inductive power status of an off-chip inductive power module and a battery power status of a battery. A power mode is selected based on the at least one power status signal. A power mode signal is generated based on the selected power mode. A power supply signal is generated and adjusted in response to the power mode signal. | 12-09-2010 |
| 20110103573 | MULTI-FREQUENCY TONE DETECTOR - A tone detector for detecting a tone having a plurality of targeted frequencies comprises a first filter bank providing frequency estimates for an initial indication of a presence of each of the targeted frequencies; a second filter bank being controlled by the frequency estimates and comprising a plurality of filters operating in different frequency bands, each frequency band comprising at least one of the targeted frequencies, each of the filters providing a modified signal; a third filter bank extracting a noise signal from the input signal; a plurality of level control units (LCU) providing normalized modified signals having a constant amplitude; a power estimation module providing a power estimation parameter for each of the modified signals and the noise signal; and a discrimination module controlling a plurality of demodulator modules, each of the demodulator units providing a fine estimate of one of the targeted frequencies. | 05-05-2011 |
| 20120263294 | SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION IN A TELECOMMUNICATIONS FACILITY - A system and method is provided for conserving electrical power in a telecommunications facility ( | 10-18-2012 |
| 20130028407 | VOLTAGE GENERATION APPARATUS AND VOLTAGE GENERATION METHOD - A voltage generation apparatus includes a booster circuit which outputs a direct-current voltage after having performed boosting processing, the voltage value of the direct-current voltage being specified on the basis of a pulse width of a series of pulse signals inputted, a direct-current to alternating-current conversion circuit which generates a ringer voltage to be supplied to a device connectable to a telephone line by converting the direct-current voltage outputted by the booster circuit to an alternating-current voltage, and a control unit which outputs a series of pulse signals to the booster circuit. the series of pulse signals having a feeding-voltage pulse width corresponding to a target voltage value of a feeding, voltage or a ringer-voltage pulse width corresponding to a target voltage value. the feeding-voltage pulse width and the linger-voltage pulse width being pulse widths having been set in a voltage adjustment stage. | 01-31-2013 |
| 20130202103 | DIRECT CURRENT/DIRECT CURRENT CONVERTER FOR ACQUIRING STABILIZED LOW VOLTAGE AND TELEPHONE POWER SUPPLY CIRCUIT - A Direct Current/Direct Current (DC/DC) converter for acquiring stabilized low voltage and a telephone power supply circuit based on the DC/DC converter are provided by the present invention. The DC/DC converter includes a power level circuit ( | 08-08-2013 |
| 20130279688 | INTERFACE CIRCUIT AND MAIN DEVICE - There is provided an interface circuit according to which a telephone or an intercom may be connected to a port of a main device including a telephone exchange function. The interface circuit includes a power supply circuit that supplies necessary power supply voltage according to the telephone or the intercom connected to the port, and a state detection circuit that detects, in a case where the telephone is connected to the port, whether the telephone is in an on-hook state or in an off-hook state, based on the value of an input impedance of the telephone, and that detects, in a case where the intercom is connected to the port, whether the intercom is in a standby state or in an activation button pressed state, based on a value of the input impedance of the intercom. | 10-24-2013 |
| 379396000 | Visual signalling (e.g., lamp) | 2 |
| 20100158240 | TELECOMMUNICATION TERMINAL WITH LIGHT BEAM SCANNER - A telecommunication terminal contains a two direction light beam scanner ( | 06-24-2010 |
| 20160119459 | LIGHTING FOR AUDIO DEVICES - An apparatus may include an inner module, an outer module that substantially surrounds a perimeter of the inner module, a plurality of light emitters, and a light distribution medium. The plurality of light emitters may be positioned under the inner module and project light radially outward. The light distribution medium may transport the light projected from the plurality of light emitters to an edge of the light distribution medium. The edge may include a diffusive surface and traverse a substantial portion of a boundary between the inner module and the outer module. | 04-28-2016 |
| 379397000 | Wire distribution | 1 |
| 20100266117 | Network Switch with Integrated Cable Termination Locations - A network switch that can directly receive and connect to telecommunications cables includes: a body; a first panel mounted to the body; a first plurality of ports located in the first panel, each of the first plurality of ports configured to receive a telecommunications cable; a second panel mounted to the body; a second plurality of ports located in the second panel, each of the second plurality of ports configured to receive a patch cord; and electronic circuitry housed in the body for conducting network switching operations, the electronic circuitry being connected with the first plurality of ports and the second plurality of ports. Such a network switch can receive a cable directly, rather than requiring an intermediate patch panel, and therefore can simplify either an interconnect or a cross-connect telecommunications system. | 10-21-2010 |
