Patent application number | Description | Published |
20080224690 | Embedded Directional Power Sensing - A module incorporates power sensors coupled to a through line through directional couplers, all of which are mounted on a board within a housing, for measuring transmitted and received power of a system under test. | 09-18-2008 |
20090272634 | POWER DIVERTER HAVING A MEMS SWITCH AND A MEMS PROTECTION SWITCH - A power diverter has a first terminal for interposition between a signal input and a signal output. A MEMS switch is coupled to the first terminal and has a MEMS switch control input. A MEMS protection switch is coupled to the MEMS switch and has a protection switch control input. The switch control inputs are configured to receive control signals for selectively placing the power diverter in i) an ON state in which signal power at the signal input is diverted from the signal output via the MEMS switch and the MEMS protection switch, ii) an OFF state in which signal power at the signal input is not diverted from the signal output, and in which the MEMS switch mitigates an insertion loss and distortion imparted by the MEMS protection switch to a signal path between the signal input and the signal output, and iii) an intermediary state in which the MEMS protection switch reduces current flow through the MEMS switch. | 11-05-2009 |
20100277839 | OVERPOWER PROTECTION CIRCUIT - A power protection apparatus includes a PIN diode circuit and a solid state limiter. The PIN diode circuit is connected to a signal path for transporting RF signals between a first RF device and a second RF device, the PIN diode circuit including first and second PIN diodes having opposite polarities. The solid state limiter is configured to detect an overpower condition of an RF signal input from the second RF device on the signal path, and to trigger the PIN diode circuit in response to the detected overpower condition, limiting the overpower condition. | 11-04-2010 |
Patent application number | Description | Published |
20110299695 | ACTIVE NOISE CANCELLATION DECISIONS IN A PORTABLE AUDIO DEVICE - 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 noise level is greater than a threshold level of an audio artifact that could be induced by the ANC. Other embodiments are also described and claimed. | 12-08-2011 |
20120058803 | DECISIONS ON AMBIENT NOISE SUPPRESSION IN A MOBILE COMMUNICATIONS HANDSET DEVICE - A method in a communications device includes the following operations. During a call, a process automatically detects that the device has moved from an at-the-ear position to an away-from-the-ear position. Based on the detection, a noise suppressor that operates upon an uplink signal for the call is signaled to change its noise suppression performance. Other embodiments are also described and claimed. | 03-08-2012 |
20120121096 | INTELLIGIBILITY CONTROL USING AMBIENT NOISE DETECTION - A communications device is configured to control the intelligibility of speech in a downlink voice signal during a call. The device determines a current noise level based on sampling ambient acoustic noise and based on a previously determined noise level. The device then determines an overall output gain and a frequency response based on the current noise level and based on a user-selected volume setting of the device. The device modifies the downlink voice signal during the call in accordance with the determined overall output gain and the determined frequency response. Other embodiments are also described and claimed. | 05-17-2012 |
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 |
20130065652 | DECISIONS ON AMBIENT NOISE SUPPRESSION IN A MOBILE COMMUNICATIONS HANDSET DEVICE - A method in a communications device includes the following operations. During a call, a process automatically detects that the device has moved from an at-the-ear position to an away-from-the-ear position. Based on the detection, a noise suppressor that operates upon an uplink signal for the call is signaled to change its noise suppression performance. Other embodiments are also described and claimed. | 03-14-2013 |
20130252675 | ACTIVE NOISE CANCELLATION DECISIONS IN A PORTABLE AUDIO DEVICE - 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 noise level is greater than a threshold level of an audio artifact that could be induced by the ANC. Other embodiments are also described and claimed. | 09-26-2013 |
20130259250 | PRE-SHAPING SERIES FILTER FOR ACTIVE NOISE CANCELLATION ADAPTIVE FILTER - A feed forward active noise cancellation (ANC) system for use in a portable audio device has an adaptive digital filter and a reference microphone. A non-adaptive pre-shaping digital filter has an input coupled to the reference microphone and is in series with, and in front of, the adaptive filter. The pre-shaping filter is minimum phase and presents at least 2 dB more gain over a low audio frequency band than over a high audio frequency band. This may help compensate for low frequency band difficulties, and may thereby extend ANC bandwidth at the low end without a worsening impact on the high end. Other embodiments are also described and claimed. | 10-03-2013 |
20140071221 | USE OF AN EARPIECE ACOUSTIC OPENING AS A MICROPHONE PORT FOR BEAMFORMING APPLICATIONS - A mobile multi-function device that includes a speaker, two or more microphones, and a beamformer processor is described. The beamformer processor uses the microphones to perform beamforming operations. One of the microphones shares a receiver acoustic opening with the speaker while the other microphone uses a separate acoustic opening. The receiver acoustic opening may be an earpiece opening that is held to the ear of a user while conducting a phone call with the device and provides acoustic input and output paths for the microphone and the speaker, respectively. | 03-13-2014 |
20140072133 | DECISIONS ON AMBIENT NOISE SUPPRESSION IN A MOBILE COMMUNICATIONS HANDSET DEVICE - A method in a communications device includes the following operations. During a call, a process automatically detects that the device has moved from an at-the-ear position to an away-from-the-ear position. Based on the detection, a noise suppressor that operates upon an uplink signal for the call is signaled to change its noise suppression performance. Other embodiments are also described and claimed. | 03-13-2014 |
20140072134 | ROBUST PROCESS FOR MANAGING FILTER COEFFICIENTS IN ADAPTIVE NOISE CANCELING SYSTEMS - A system for managing the changing state of an adaptive filter in an active noise control (ANC) system is described. An adaptive filter state storage stores copies of prior states of the adaptive filter. A disturbance detector can detect either normal ambient noise or abnormal ambient noise. An adaptive filter state manager signals that a copy of a current state of the adaptive filter is to be repeatedly written to the state storage, so long as normal ambient noise is being detected. But when abnormal noise is detected, the state manager signals that the adaptive filter be restored to one of its prior states, from the copies stored in the state storage. Other embodiments are also described and claimed. | 03-13-2014 |
20150163578 | USE OF AN EARPIECE ACOUSTIC OPENING AS A MICROPHONE PORT FOR BEAMFORMING APPLICATIONS - A mobile multi-function device that includes a speaker, two or more microphones, and a beamformer processor is described. The beamformer processor uses the microphones to perform beamforming operations. One of the microphones shares a receiver acoustic opening with the speaker while the other microphone uses a separate acoustic opening. The receiver acoustic opening may be an earpiece opening that is held to the ear of a user while conducting a phone call with the device and provides acoustic input and output paths for the microphone and the speaker, respectively. | 06-11-2015 |
20160037255 | BEAMFORMING IN VARYING SOUND PRESSURE LEVEL - A method that uses a microphone array for spatially selective sound pickup during an audio-video recording session is described. An audio signal for the audio-video recording session is generated using a beamforming process from the microphone array in accordance with a sound pickup directivity pattern. Ambient sound pressure level of the audio-video recording session is monitored while generating the audio signal. The sound pickup directivity pattern of the beamforming process is automatically adjusted during the audio-video recording session as a function of the monitored ambient sound pressure level. Other embodiments are also described and claimed. | 02-04-2016 |
Patent application number | Description | Published |
20110109207 | Collapsible Food Service System - A food service system is formed using a plurality of units capable of being interlocked together in a variety of customizable configurations. The units of the food service system include a food service bar with buffet pan chillers, a work table, a cashier station, and variety of connecting pieces for linking each of the units together. The food service bar comprises a sneeze guard that protects the food contained within the bar on three sides and can be broken down and folded down and into itself when the bar is being transported or stored. The buffet pan chillers are double sided and configured such that when frozen, may accommodate a shallow food pan on one side and then flipped over to accommodate a deep food pan on the other side while still maintaining the same serving height. Each unit is configured to receive multiple sizes of wheels or casters. | 05-12-2011 |
20110278280 | Food Warming System - A pellet warming system includes a charging unit capable of warming a plurality of pellets contemporaneously. Each of the plurality of pellets comprise an internal heating element which resistively heats the body of the pellet from a regulated electrical current that is provided from the charging unit. The charging unit also comprises a controller board with means to control the duration of electric current supplied to each of the pellets as well as means for cycling electrical current to each of the pellets in order to maintain the resistively generated heat. Once heated, each pellet may have comestible goods disposed indirectly thereon through a plate, the pellet maintaining the comestible goods at an elevated temperature for an extended period of time. The charging unit further comprises means for a user to connect their PC to the controller board in order to alter its internal programming and view its operational history. | 11-17-2011 |
20130270988 | Mobile Serving Cart with Adjustable Hinges - A mobile serving cart with adjustable hinges that allows for the production inconsistencies associated with rotational molding. The cart comprises a plurality of door assemblies, each door assembly comprising at least two hinge assemblies, at least one hinge assembly being disposed at the upper portion of the door assembly, and at least one other hinge assembly being disposed at the lower portion of the door assembly. Each hinge assembly comprises at least two door bolts, at least one cart bolt, and a pivot rod. The cart rod is disposed between the at least two door bolts at an orientation that is orthogonal to the at least two door bolts. The hinge assemblies provide a means for the rotationally molded door assemblies and side walls of the cart to be tightly or snuggly coupled together despite the manufacturing inconsistencies inherent to the rotational molding process. | 10-17-2013 |
20140325998 | Mobile Service Cart with Closed Circulation System - An improved refrigeration and heating system comprising a thermochemical device, and a mobile service cart. The thermochemical device is capable of refrigerating or cooling the ambient air due to an internal chemical process. This same chemical process also produces a significant amount of heat as a by-product which, if left alone, would normally be vented or released in to the atmosphere and become lost. However because the theremochemical device is disposed at the center of the cart, the heat which is generated by the cooling process is retained and utilized to provide a separate heating area within the cart. This allows the current system to operate as a closed loop, meaning that the cart and thermochemical device work in conjunction to form a self-sustaining hot and cold storage area with very little maintenance or input from a user. | 11-06-2014 |
Patent application number | Description | Published |
20100043293 | REFRIGERATOR DOOR CONSTRUCTION INCLUDING A LAMINATED PACKAGE - A door assembly that includes a a frame having an upper portion and a lower portion, an electrical hinge mounted to the upper portion of the frame, a gravity hinge mounted to the lower portion of the frame and a door pivotably mounted to the frame by the electrical hinge and the gravity hinge. The electrical hinge pin has a hinge pin part having a plurality of electrical conductors extending downwardly therefrom. The gravity hinge also includes a hinge pin part. The door includes a laminated package having first, second and third layers adhered to one another. At least one of the layers includes an electro-conductive coating thereon that is in electrical communication with the electrical hinge. The door also includes a rail secured adjacent a hinge side edge of the laminated package. The rail includes a tunnel defined therein that includes a top opening that receives the hinge pin part of the electrical hinge and a bottom opening that receives the hinge pin part of the gravity hinge. | 02-25-2010 |
20120285089 | REFRIGERATED DISPLAY CASE DOOR WITH TRANSPARENT LCD PANEL - A door assembly that includes a single glass unit having at least first, second and third panels, a front surface, a rear surface, and an outside edge. At least one of the first, second or third panels is a transparent LCD panel on which media can be displayed. The single glass unit also includes a frame that at least partially surrounds the outside edge of the single glass unit, and electronic components in electrical communication with the LCD panel. | 11-15-2012 |
20140144083 | DISPLAY CASE DOOR WITH TRANSPARENT LCD PANEL - An improved display case door assembly for a product storage device is provided. The display case door assembly includes a transparent unit comprising a front panel, a rear panel, and a transparent LCD panel positioned between the front panel and the rear panel. The transparent LCD panel is configured to present visual media content. The display case door assembly further includes a lighting element configured to provide lighting for the transparent LCD panel and for products within the product storage device and a light guide configured to selectively direct light emitted from the lighting element toward the transparent LCD panel and the products within the product storage device. | 05-29-2014 |
20150015133 | PIVOTING MULLION FOR A TEMPERATURE-CONTROLLED STORAGE DEVICE - A pivoting mullion for a temperature-controlled storage device is provided. The pivoting mullion includes a mullion body pivotally attached to a display case door of the temperature-controlled storage device. The mullion body is rotatable relative to the display case door between a first position when the display case door is open and a second position when the display case door is closed. The mullion body is configured to provide a support surface against which the display case door rests when the mullion body is in the second position and the display case door is closed. The pivoting mullion further includes a lighting element fixed to the mullion body and configured to activate when the display case door is closed. Activation of the lighting element illuminates items within the temperature-controlled storage device such that the items are visible through the display case door when the display case door is closed. | 01-15-2015 |
20150216326 | PRODUCT STORAGE DEVICE WITH TRANSPARENT LCD PANEL - A display system for a product storage device includes a transparent unit having a front panel, a rear panel, and a transparent LCD panel positioned between the front panel and the rear panel. The transparent LCD panel is configured to present visual media content. A lighting element is attached to the transparent unit and configured to provide lighting for both the transparent LCD panel and for products within the product storage device. The lighting element emits light in a direction away from the transparent LCD panel and toward the products within the product storage device. A light guide selectively reflects the light emitted from the lighting element back toward the transparent LCD panel and through the transparent LCD panel to provide backlighting for the transparent LCD panel. | 08-06-2015 |
20150223619 | DISPLAY CASE DOOR ASSEMBLY WITH VACUUM PANEL - A display case door assembly for a temperature-controlled storage device includes a frame defining an opening into the temperature-controlled storage device and a transparent unit coupled to the frame. The transparent unit includes a first vacuum pane, a second vacuum pane, and an evacuated gap between the first and second vacuum panes. The evacuated gap has a predetermined thickness within which a vacuum is drawn, thereby providing a thermal insulation effect for the transparent unit. The transparent unit further includes a plurality of spacers disposed within the evacuated gap and configured to maintain the predetermined thickness of the evacuated gap when the vacuum is drawn therein. | 08-13-2015 |
20150335174 | DISPLAY CASE DOOR WITH TRANSPARENT LCD PANEL - A display case door for a product storage device includes a transparent unit through which products within the product storage device are visible. The transparent unit includes a transparent LCD panel configured to present visual media content. The display case door further includes an electrical hinge pin rotatably coupling the display case door to the product storage device and one or more electrical conductors extending through the electrical hinge pin. The electrical conductors deliver the visual media content to the transparent LCD panel from a remote data source. | 11-26-2015 |
20160047592 | THERMAL FRAME FOR A REFRIGERATED ENCLOSURE - A thermal frame for an opening in a refrigerated enclosure includes a perimeter frame segment fixed to the refrigerated enclosure along a perimeter of the opening The thermal frame includes a first vacuum panel fixed relative to the perimeter frame segment and configured to reduce heat transfer through the perimeter frame segment. The thermal frame may include a mullion frame segment fixed to the refrigerated enclosure and dividing the opening into a plurality of smaller openings. The thermal frame may include a second vacuum panel fixed relative to the mullion frame segment and configured to reduce heat transfer through the mullion frame segment. | 02-18-2016 |
Patent application number | Description | Published |
20110141917 | PROTOCOL FREE TESTING OF A FABRIC SWITCH - A switch fabric for a modular router may be tested without connecting the switch fabric portion of the router to the other modular portions of the router. The switch fabric may generate test data units and insert the test data units into one or more elements of the switch fabric. The switch fabric may operate with the inserted test data units. A control component may receive data units from the switch fabric after operation of the switch fabric and analyze the received data units to determine whether the received data units correspond to the inserted test data units. | 06-16-2011 |
20110188386 | PACKET-BASED MEMORY TEST OF A NETWORK DEVICE - A router may be tested using a packet-based testing technique in which the test packets are generated by the router. In one implementation, a forwarding plane in a router may include a first component to process header information of packets to determine forwarding information, and a memory component to store payload data for the packets. A control plane of the router may generate test packets, insert the test packets into the forwarding plane, receive a second set of packets from the forwarding plane, analyze the second set of packets to determine whether the second set of packets correspond to the inserted plurality of test packets, and output, based on the analysis, test results, relating to the operation of the routing device. | 08-04-2011 |
20120307651 | PROTOCOL FREE TESTING OF A FABRIC SWITCH - A switch fabric for a modular router may be tested without connecting the switch fabric portion of the router to the other modular portions of the router. The switch fabric may generate test data units and insert the test data units into one or more elements of the switch fabric. The switch fabric may operate with the inserted test data units. A control component may receive data units from the switch fabric after operation of the switch fabric and analyze the received data units to determine whether the received data units correspond to the inserted test data units. | 12-06-2012 |
Patent application number | Description | Published |
20090243672 | MULTI-POLE DELAY ELEMENT DELAY LOCKED LOOP (DLL) - In general, in one aspect, the disclosure describes a delay line including a cascade of delay stages where each stage delays the phase a defined amount. Each delay stage includes an active voltage control delay element and one or more passive delay elements (e.g., resistive-capacitive (RC) networks). The aggregate amplitude gain roll-off of an active/passive multi pole delay stage delaying the phase a defined amount is less than the amplitude gain roll-off of a single pole delay stage delaying the phase the defined amount. Accordingly jitter amplification of the active/passive multi pole delay stage is less than that of a single pole delay stage. The power consumption of an active/passive multi pole delay stage is less than an all active multi pole delay stage. | 10-01-2009 |
20090322389 | JITTER ATTENUATING DELAY LOCKED LOOP (DLL) USING A REGENERATIVE DELAY LINE - In general, in one aspect, the disclosure describes a delay locked loop (DLL) with a regenerative delay line that includes a cascade of delay stages. A first delay stage includes a two-input delay device which receives a 180 degree phase shifted signal as feedback. This feedback signal configures the delay line into a regenerative amplifier, the frequency response of which has peaking or resonance at the input frequency which results in jitter filtering. The amount of regeneration is determined by relative strength of an input signal and the feedback signal. Relative strength is determined by relative size of devices receiving the signals. The resonant frequency (with or without oscillations) of the delay line may automatically be tuned to the incoming clock frequency by the DLL control loop. Each of the other delay stages may include two-input delay devices with the inputs shorted for uniformity. | 12-31-2009 |
20130154691 | MULTI-PHASE CLOCK GENERATION APPARATUS AND METHOD - A multi-phase clock generator may receive an input clock signal as an input. The clock generator may also receive an inverse of the input clock signal. The clock generator may produce a plurality of output clock signals having different phases. The phases of the output clock signals may be evenly spaced. The output clock signals may have a similar waveform to the input clock signal, with a frequency that is lower than the input clock signal by a division factor. | 06-20-2013 |
20140176193 | LOW POWER SQUELCH DETECTOR CIRCUIT - Described is an apparatus comprising: a reference generator to provide a first reference and a second reference; a first input coupled to the first reference; a second input coupled to the second reference; and a comparator coupled to the first and second inputs, the comparator to receive a clock signal and to update an output signal according to a phase of the clock signal. | 06-26-2014 |