-
公开(公告)号：US20240007815A1
公开(公告)日：2024-01-04
申请号：US18340183
申请日：2023-06-23
Applicant: YAMAHA CORPORATION
Inventor： Keiichiro SOMA , Arata IMAI , Takeshi NONAKA , Masaaki OKABAYASHI , Yu TAKAHASHI , Kotaro TERADA , Kenji ISHIZUKA
CPC classification number: H04S7/30 , H04S7/40 , G06F3/165 , H04S3/008 , H03G3/3005 , H04S2400/01 , H04S2400/13 , H03G2201/103
Abstract: An audio signal processing method for a mixing apparatus including a plurality of channels, the audio signal processing method includes selecting at least a first channel among the plurality of channels, inputting an audio signal of the selected first channel, specifying setting data to be set to the mixing apparatus, based on time-series sound volume data for the first channel, or data on a second channel different from the first channel, among the plurality of channels, and outputting the specified setting data.
-
公开(公告)号：US20230412135A1
公开(公告)日：2023-12-21
申请号：US17843507
申请日：2022-06-17
Applicant: Apple Inc.
Inventor： Kefei Wu , Morteza Nick , David M Signoff , Preeti S Mulage
CPC classification number: H03G3/3026 , H03F3/72 , H04B1/0053 , H03F2200/24 , H03G2201/103
Abstract: This disclosure is directed to reducing output voltage distortions of Variable Gain Amplifiers (VGAs). A VGA may include a number of amplifiers each providing a portion of a total gain of the VGA. For example, a processing circuit may select one or more of the amplifiers of the VGA to provide the output signal with a selected gain. However, the selected amplifiers may provide amplified signals with one or more distortion signals when receiving a bias voltage. Systems and methods are described to reduce or cancel the distortion signals of the selected amplifiers by providing a subthreshold nonzero bias voltage (e.g., a weak voltage) to the remaining (e.g., non-selected) amplifiers of the VGA. For example, the non-selected amplifiers may receive the weak voltage to provide distortion signals with similar voltage amplitude and out of phase compared to the distortion signals of the selected amplifiers.
-
公开(公告)号：US20230336136A1
公开(公告)日：2023-10-19
申请号：US17719613
申请日：2022-04-13
Applicant: STMicroelectronics S.r.l.
Inventor： Francesco STILGENBAUER , Paolo CACCIAGRANO , Giovanni GONANO
CPC classification number: H03G3/344 , H04R3/00 , H04R2430/01 , H03G2201/103
Abstract: A digital audio playback circuit includes a noise shaping circuit configured to receive an input digital audio signal, and a digital to analog converter (DAC) configured to convert the input digital audio signal to a pre-amplified output analog audio signal according to a gain ramp defined by a gain control signal. A muting circuit is configured to compare input digital audio signal to a threshold and assert a mute control signal when the input digital audio signal is below the threshold. An analog gain control ramp circuit is configured to generate the gain control signal in response to the mute control signal to cause the gain ramp to ramp down. An amplifier is configured to amplify the pre-amplified output analog audio signal for playback by an audio playback device.
-
公开(公告)号：US11784735B2
公开(公告)日：2023-10-10
申请号：US17719300
申请日：2022-04-12
Applicant: Wilson Electronics, LLC
Inventor： Joshua Kent Barnes , Christopher Ken Ashworth
IPC: H04B7/14 , H04B17/40 , H04B17/327 , H04B17/336 , H03G3/30 , H04B7/15
CPC classification number: H04B17/40 , H03G3/3042 , H04B7/15 , H04B17/327 , H04B17/336 , H03G2201/103 , H03G2201/106 , H03G2201/307
Abstract: A technology is described for adjusting repeater gain based on user equipment need. A downlink path of the repeater can be deactivated. A deactivated throughput value can be received from the UE for data received at the UE in a selected time period. The downlink amplification path of the repeater can be activated. An activated throughput value for data received at the UE in the selected time period can be received from the UE. A difference can be determined between the deactivated throughput value and the activated throughput value. A repeater gain value can be reduced or bypassed when the deactivated throughput value is greater than the activated throughput value by a selected threshold value.
-
公开(公告)号：US11784620B2
公开(公告)日：2023-10-10
申请号：US17592913
申请日：2022-02-04
Applicant: SKYWORKS SOLUTIONS, INC.
Inventor： Xingyi Hua , Weiheng Chang
CPC classification number: H03G3/3042 , H03F3/245 , H04B1/44 , H03F2200/294 , H03F2200/451 , H03G2201/103 , H03G2201/307
Abstract: This disclosure relates to variable-gain amplifiers that include degeneration circuits configured to adapt to a gain mode that is currently being implemented. For example, a variable-gain amplifier can operate in a plurality of gain modes to amplify a signal with different levels of amplification. The variable-gain amplifier can include a gain circuit configured to amplify a signal and a degeneration circuit coupled to the gain circuit. The degeneration circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The degeneration circuit can operate based on a current gain mode to change an inductance for the variable-gain amplifier.
-
Patent Agency Ranking
公开(公告)号：US20230308065A1
公开(公告)日：2023-09-28
申请号：US17702882
申请日：2022-03-24
Applicant: Kandou Labs SA
Inventor： Maik Fuhs
CPC classification number: H03G3/30 , H03F3/45264 , H03G2201/103
Abstract: Obtaining a bias control signal at a current source and responsively generating a fixed current, receiving a differential voltage input signal at corresponding differential input nodes of a plurality of differential amplifier stages connected to the current source, the plurality of differential amplifier stages comprising a primary amplifier stage and a set of supplemental amplifier stages, each of the plurality of differential amplifier stages having a pair of output nodes connected to common load impedances, generating an amplified differential voltage output signal on the pair of output nodes by directing the fixed current through the load impedances, and selectively connecting each supplemental amplifier stage in parallel to the primary amplifier stage via a corresponding gain control switch of a set of gain control switches connected to the primary amplifier stage and the plurality of supplemental amplifier stages to adjust an overall transconductance of the plurality of differential amplifier stages.
-
公开(公告)号：US11755274B2
公开(公告)日：2023-09-12
申请号：US17411387
申请日：2021-08-25
Applicant: Lenbrook Industries Limited
Inventor： Matthew Simmonds
CPC classification number: G06F3/162 , H03F3/183 , H03G3/3005 , H04R3/00 , H03F2200/03 , H03G2201/103 , H04R2420/07 , H04R2420/09
Abstract: A hybrid input networked subwoofer includes a traditional line-in analog audio input for receiving analog audio content from non-networked audio source devices together with wired and/or wireless network interfaces for receiving digital audio content from one or more networked audio devices.
-
118.发明授权公开(公告)号：US11754420B2
公开(公告)日：2023-09-12
申请号：US17169974
申请日：2021-02-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Nageswara Rao Kalluri , Sridhar Katakam , Somasekhar Valleru , Pravinsharma Kaliyannan Eswaran , Rajkumar Perumal
CPC classification number: G01D5/2291 , H01F21/06 , H03G3/3089 , H03G2201/103
Abstract: System and methods for accuracy improvement of an LVDT are provided. Aspects include determining a first voltage from the first PGA and a second voltage from the second PGA, wherein the first voltage is determined from a PGA coupled to a first secondary winding, and wherein the second voltage is determined from a second PGA coupled to a second secondary winding, iteratively performing: analyzing the first voltage to determine a gain correction is needed for a first gain for the first PGA, the gain correction comprising change to the first gain, and analyzing the second voltage to determine a gain correction is needed for a second gain for the second PGA, the gain correction comprising change to the second gain, based on determining a gain correction is not needed for the first gain and the second gain, calculating a position based on the first voltage and the second voltage.
-
公开(公告)号：US11752356B2
公开(公告)日：2023-09-12
申请号：US16273519
申请日：2019-02-12
Applicant: NeuroEM Therapeutics, Inc.
Inventor： Gary W. Arendash , Rob Baranowski
CPC classification number: A61N1/40 , A61N1/0476 , A61N5/04 , H03G3/30 , H03G3/3036 , H03G3/3042 , H01Q1/273 , H03G2201/103 , H03G2201/106 , H03G2201/307
Abstract: In one example in accordance with the present disclosure, an antenna system is described. The antenna system includes an array of antennas. Each antenna emits electromagnetic waves and is presented with a load that is different from other antennas in the array. The antenna system also includes a control system. The control system includes a single transmitter to sequentially drive antenna sets, a switching device to select, for each activation period in an activation sequence, an antenna set to be driven, and a controller. The controller determines an actual power output of each antenna and generates an adjusted control signal for the single transmitter such that the output of each antenna is controlled to match a target power for that antenna, regardless of a load for the antenna.
-
公开(公告)号：US11750164B2
公开(公告)日：2023-09-05
申请号：US16950685
申请日：2020-11-17
Inventor： Jeffrey Michael Brockmole , Matthew Ryan Parnell
CPC classification number: H03G3/301 , H03F1/0211 , H03F3/183 , H03G5/005 , H03F2200/03 , H03G2201/103
Abstract: Methods and systems are provided for controlling rail-voltages for amplifier output stages. In some examples, a method may include receiving sets of data values (e.g., at a power-supply control circuitry) for control of a rail voltage of an amplifier output stage. The method may also include determining that the receipt of a pending set of data values has been interrupted. Then, upon the determination that the receipt of the pending plurality of data values has been interrupted, the method may include decreasing the rail voltage to a non-boosted rail-voltage level.
-
-
-
-
-
-
-
-
-
Search Results
289
records
(took 0.015 seconds)
