| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 348707000 | Amplifiers | 11 |
| 20080198269 | Front-end integrated circuit for television receivers - A tuner front-end circuit for processing a radio frequency (RF) signal includes a first filter block that terminates the RF signal for unwanted frequency bands; a second filter block that provides selectivity within the unterminated signal by separating the unterminated signal into a plurality of separate signals, each of a different desired frequency band; and an amplifier block that amplifies each of the separate signals. One or more of the amplified separate signals can be provided to a tuner. The circuit can also include a daisy chain output block that provides the amplified separate signals to one or more additional tuners. One or more tracking filter blocks can also be included to provide further selectivity to the amplified separate signals and to reject signals at specific harmonics to prevent degradation of a signal-to-noise ratio. A method of processing an RF signal is also presented. | 08-21-2008 |
| 20080218637 | RECEIVING APPARATUS, METHOD OF CONTROLLING APPARATUS, AND PROGRAM FOR IMPLEMENTING THE METHOD - A receiving apparatus for receiving a digital television broadcast includes an amplification unit that amplifies radio frequency signals supplied from an antenna at a predetermined gain to output the amplified radio frequency signals, a channel selection unit that selects a broadcast wave from the radio frequency signals output from the amplification unit to produce output signals, a demodulation unit that processes the output signals to demodulate content data transmitted on the broadcast wave, and a control unit that controls the gain of the amplification unit so that the signal level of the output signals becomes a predetermined value. The control unit controls the gain of the amplification unit using the control start value and changes the control start value in accordance with the result of processing by the demodulation unit. | 09-11-2008 |
| 20080273120 | SINGLE SUPPLY DIRECT DRIVE AMPLIFIER - A driver amplifier operative from a single DC voltage supply, coupled directly to the output load without the need for DC coupling capacitors used for preventing DC reaching the output load. An onboard power supply generates a negative voltage rail that powers the output amplifiers, allowing driver amplifier operation from both positive and negative rails. Since the amplifiers can be biased at ground potential (0 volts), no significant DC voltage exists across the load and the need for DC coupling capacitors is eliminated. | 11-06-2008 |
| 20090086106 | VIDEO SIGNAL PROCESSING CIRCUIT AND ELECTRIC DEVICE IN WHICH THE SAME IS MOUNTED - The video amplifying circuit amplifies the video signal with a given gain. The charge pump circuit generates the other voltages from a given fixed voltage in order to provide the video amplifying circuit with a plurality of mutually different power supply voltages. The oscillating circuit provides the charge pump circuit with a clock frequency. Noise caused by the clock frequency of the charge pump circuit is flown into the video amplifying circuit. The oscillating circuit sets the clock frequency so as to visually reduce the quality deterioration caused by image noises that occur in an image generated from the video signal processed by the video amplifying circuit. | 04-02-2009 |
| 20100073572 | Variable-gain low noise amplifier for digital terrestrial applications - An apparatus and method is disclosed for adjusting a gain of an amplifier assembly array. The amplifier assembly array includes a first stage to provide an amplified signal based upon an input signal. The first stage has a variable gain controlled in response to one or more gain control signals. An Automatic Gain Control (AGC) module generates the one or more gain control signals according to a ramp function in response to a power level of the amplified signal. The first stage may include a first low noise amplifier (LNA) to amplify the input signal to provide a first amplified input signal and a second LNA to amplify a second input signal to provide a second amplified signal. A switch selects between the amplified signal and the second amplified signal to provide the amplified signal. The amplifier assembly array may additionally include a second stage to provide a second amplified signal based upon the amplified signal. The second stage may include a third LNA to amplify one or more used channels of the amplified signal and a fourth LNA to amplify one or more unused channels of the amplified signal. | 03-25-2010 |
| 20100182512 | SEMICONDUCTOR INTEGRATED CIRCUIT AND VIDEO SIGNAL OUTPUT CIRCUIT - In a semiconductor integrated circuit arranged to perform sag compensation for a video signal, an operational amplifier includes a non-inverted input terminal, an inverted input terminal, and an output terminal, in which a video signal is input to the non-inverted input terminal. A first resistor includes a first end connected to the inverted input terminal and a second end being grounded. The output terminal is connected to a first external terminal and the inverted input terminal is connected to a second external terminal. A second resistor includes a first end connected to the output terminal and a second end connected to the inverted input terminal. A first capacitor is disposed between the first external terminal and the second external terminal and connected in parallel to the second resistor, and the second resistor has a resistance value determined based on a capacitance value of the first capacitor. | 07-22-2010 |
| 20100265407 | METHOD AND SYSTEM FOR LOOP THROUGH FOR MULTI-BAND TV TUNERS AND SET-TOP BOX AND/OR TV SET APPLICATIONS - Methods and systems for loop-through for multi-band TV tuners and set-top box and/or TV set applications are disclosed and may include generating master and slave output signals from one or more low-noise amplifiers including master and slave stages. The master and slave stages may include parallel-coupled gain paths. Gate terminals and source terminals of input transistors for the master and slave stages may be directly coupled. The input transistors for the master and slave stages may share an inductor coupled to the source terminals and to ground. The master and slave stages may include cascode stages. VHF and UHF signals may be amplified in the multi-band receiver. The generated master output signal may be processed in the multi-band receiver, and may be utilized to generate I and Q output signals. A plurality of the slave output signals may be summed and communicated to a receiver external to the multi-band receiver. | 10-21-2010 |
| 20120140122 | RECEIVING APPARATUS AND RECEIVING METHOD THEREOF - The present invention discloses a signal receiver and a method thereof. The signal receiver utilizes a switch unit to regulate a loop-through, where the complete function of the loop-through is accomplished even during a sleep mode, which reduces power consumption of the signal receiver. | 06-07-2012 |
| 20120307157 | AUDIO/VIDEO DEVICE AND AUDIO/VIDEO SYSTEM COMPRISING SAME - In an audio/video system, an audio/video device including a signal amplifier, and an external device are connected via an HDMI cable, and the audio of the audio/video device or the external device is output from an audio output device. When there is a change in a specified state of the external device, if operation setting information has not been set to activate a system audio control function or to indicate start-up in an external input mode, then this function is deactivated, and the audio/video device is started up as a content reproduction device; and if the operation setting information has been set to activate the system audio control function and to indicate start-up in the external input mode, then this function is activated, and the audio/video device is started up as an audio amplification device. | 12-06-2012 |
| 20120327304 | CONTENTS PROCESSING SYSTEM, CONTENTS PROCESSING APPARATUS, AND PROGRAM OF THE APPARATUS - Respective room output functions of an AV amplifier are set as respective devices. A controller receives device information about the devices from the AV amplifier, and can recognize the room output functions of the AV amplifier as different devices. As a result, the user can operate the room output functions of the AV amplifier individually through the controller. | 12-27-2012 |
| 20150036053 | DECREASING POWER REQUIREMENTS FOR AN OUTPUT SIGNAL BASED ON PERSISTENCE OF PERCEPTION CHARACTERISTICS - A system for decreasing output power required to produce an output signal based on persistence of perception characteristics. The system includes a circuit configured to receive a perception signal at an input. The circuit is also configured to output a portion of the input perception signal when the circuit is receiving power output a zero amplitude signal when the circuit is not receiving power. The system also includes a switch configured to provide power to the circuit for a first interval of time and cut power to the circuit for a second interval of time contiguous to the first interval of time. | 02-05-2015 |
