| Patents for H03G 7 - Volume compression or expansion in amplifiers (2,243) |
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| 10/30/1997 | WO1997033366A3 Circuit arrangement comprising a logarithmic transfer function |
| 10/14/1997 | US5677561 Temperature compensated logarithmic detector |
| 10/07/1997 | US5675656 Power amplifier with clipping level control |
| 10/07/1997 | CA2127856C Logarithmic amplifying circuit using quadritail cells |
| 10/01/1997 | EP0798869A2 Compressed audio signal processing |
| 10/01/1997 | EP0797824A1 Speech processing |
| 09/24/1997 | EP0796522A1 An intermediate frequency amplifier and a method of producing a received signal strength indicator signal |
| 09/23/1997 | US5670775 In an optical density sensing circuit |
| 09/23/1997 | CA2127854C Logarithmic amplifying circuit based on the bias-offset technique |
| 09/17/1997 | CN1159677A Device for reproducing recorded sound signal |
| 09/12/1997 | WO1997033366A2 Circuit arrangement comprising a logarithmic transfer function |
| 09/11/1997 | DE19608861A1 Schaltungsanordnung mit einer logarithmischen Übertragungsfunktion Circuitry with a logarithmic transfer function |
| 09/10/1997 | EP0793896A1 Audio signal reproduction apparatus |
| 09/09/1997 | US5666659 Method of and structure for increasing signal power over cellular link |
| 09/04/1997 | WO1997032394A1 Fat sound creation means |
| 08/27/1997 | CN1158191A IF amplifiers/limiters |
| 08/19/1997 | CA2069243C Logarithmic intermediate-frequency amplifier |
| 08/14/1997 | WO1997029520A1 Temperature compensated logarithmic detector |
| 08/14/1997 | CA2241601A1 Temperature compensated logarithmic detector |
| 08/07/1997 | WO1997028600A1 Companders |
| 07/23/1997 | EP0785659A2 Microphone signal expansion for background noise reduction |
| 07/23/1997 | EP0784825A1 Temperature compensated logarithmic convertor |
| 07/22/1997 | US5651073 Automatic level control circuit for restricting sound level |
| 07/10/1997 | WO1997024801A1 Methods and apparatus for signal amplitude control systems |
| 07/09/1997 | CN1154043A Reversible wavelet transform and embedded codestream manipulation |
| 07/08/1997 | US5647004 Multi-stage solid state amplifier that emulates tube distortion |
| 07/08/1997 | US5646573 Automatic gain-control transimpedence amplifier |
| 07/02/1997 | EP0781468A1 Improvements to a logarithmic converter |
| 06/19/1997 | WO1997022177A1 Amplifier having linear-in-db gain control |
| 06/17/1997 | US5640691 For cellular telephone systems |
| 06/17/1997 | US5640685 Mobile telephone device wherein an adder supplies a sum of audio and out-of audio band signals to a compressor circuit |
| 06/04/1997 | EP0776548A1 Linear-in-decibel variable gain amplifier |
| 06/03/1997 | US5636284 Solid state emulation of vacuum tube audio power amplifiers |
| 06/03/1997 | US5635872 Variable control of electronic power supplies |
| 05/27/1997 | US5634082 High efficiency audio coding device and method therefore |
| 05/27/1997 | US5633939 Compander circuit |
| 05/27/1997 | US5633937 For processing analog audio signals for hearing aids |
| 05/22/1997 | WO1997018627A1 Variable control of electronic power supplies |
| 05/20/1997 | US5631969 System for limiting the magnitude of sampled data |
| 05/20/1997 | US5631968 Signal conditioning circuit for compressing audio signals |
| 05/20/1997 | US5631648 Signal compression or expansion circuit for mobile communication |
| 05/20/1997 | US5631594 Tunable logarithmic amplifier circuit using cascaded triple-tail cells |
| 05/14/1997 | EP0772906A2 If amplifiers/limiters |
| 04/24/1997 | WO1997015114A1 Trimmable variable compression amplifier for hearing aid |
| 04/22/1997 | CA2068254C Mobile telephone device wherein an adder supplies a sum of audio and out-of audio band signals to a compressor circuit |
| 04/22/1997 | CA2062010C Logarithmic amplification circuit |
| 04/17/1997 | WO1997014212A1 An intermediate frequency amplifier and a method of producing a received signal strength indicator signal |
| 04/10/1997 | WO1997013187A1 Analogue function network for selecting a characteristic curve |
| 04/10/1997 | DE19542402A1 Automatic gain control circuit |
| 04/10/1997 | DE19536281A1 Wide-band amplifier device with dc coupled cascade stages e.g. for ultrasonic device |
| 04/08/1997 | US5619578 Multi-stage solid state amplifier that emulates tube distortion |
| 04/08/1997 | CA2110031C Digital sound level control apparatus |
| 04/03/1997 | DE19536644A1 Analoges Funktionsnetzwerk zur Vorgabe einer Kennlinie The same function network for presetting a characteristic |
| 04/02/1997 | EP0766382A2 Pseudo-logarithmic intermediate-frequency amplifier |
| 03/19/1997 | EP0763888A2 Method and circuit arrangement for processing audio signal |
| 03/19/1997 | CN1145553A Method and apparatus for compression using reversible wavelet transforms and embedded codestream |
| 02/06/1997 | WO1997004523A1 Improvements to a logarithmic converter |
| 02/06/1997 | WO1996038907A3 If amplifiers/limiters |
| 02/04/1997 | US5600235 Bipolar cascadable circuit configuration for signal limitation and field intensity detection |
| 02/04/1997 | US5600128 Infrared receiver with variable input resistance for optical communication systems |
| 01/23/1997 | WO1997002719A1 Audio signal reproduction apparatus |
| 01/21/1997 | US5596646 Audio tape saturation simulator |
| 01/21/1997 | US5596299 IF amplifier/limiter with positive feedback |
| 01/09/1997 | WO1997001219A1 A high frequency, differential limiting distributed amplifier |
| 01/09/1997 | DE19626615A1 Verfahren und Apparat zur Kompression, das bzw. der reversible Wavelet-Transformationen und einen eingebetteten Kodestrom verwendet Method and apparatus for compression, used or reversible wavelet transforms and an embedded codestream |
| 01/09/1997 | DE19626600A1 Reversible-Wavelet-Transformationen und eingebettete Kodestrom-Manipulation Reversible wavelet transforms and embedded codestream manipulation |
| 12/19/1996 | WO1996041413A1 Linear-in-decibel variable gain amplifier |
| 12/17/1996 | US5586193 Signal compressing and transmitting apparatus |
| 12/12/1996 | WO1996039744A1 Signal conditioning circuit for compressing audio signals |
| 12/10/1996 | US5583967 Apparatus for compressing a digital input signal with signal spectrum-dependent and noise spectrum-dependent quantizing bit allocation |
| 12/05/1996 | WO1996038907A2 If amplifiers/limiters |
| 11/26/1996 | US5579404 Signal processing system |
| 11/26/1996 | US5578958 Logarithmic amplifier |
| 11/13/1996 | CN1135682A Control circuit of low input-signal bandwidth compressor and amplifier |
| 11/05/1996 | US5572452 Filter with feed-forward AGC |
| 11/05/1996 | US5572166 Linear-in-decibel variable gain amplifier |
| 10/30/1996 | EP0685130B1 Digital audio limiter |
| 10/29/1996 | US5570055 Demodulating logarithmic amplifier |
| 10/24/1996 | DE19528844C1 Amplification and phase linearisation system for travelling wave tube and semiconductor amplifiers |
| 10/23/1996 | EP0514542B1 Feedback clamping circuit |
| 10/08/1996 | US5563913 For processing an input digital signal |
| 10/01/1996 | US5561392 Logarithmic amplifier employing cascaded full-wave rectifiers including emitter-coupled pairs with unbalanced emitter degeneration as logarithmic elements |
| 09/24/1996 | US5559791 Companding of voice signal for simultaneous voice and data transmission |
| 09/11/1996 | CN1130826A Radio receiver |
| 09/04/1996 | CN1130448A Amplifier stage with DB-linear output voltage |
| 09/03/1996 | US5553151 Hearing aid for a hearing-impaired person |
| 08/27/1996 | US5550513 High frequency, differential limiting distributed amplifier |
| 08/08/1996 | WO1996024192A1 Filter with feed-forward agc |
| 08/08/1996 | CA2211094A1 Filter with feed-forward agc |
| 07/31/1996 | EP0724329A1 Low input signal bandwidth compressor and amplifier control circuit |
| 07/30/1996 | CA2065655C Plural time constant signal control |
| 07/17/1996 | EP0722217A1 Threshold adjusting circuit of the signal attenuation characteristic |
| 07/17/1996 | EP0307465B1 Semiconductor emulation of tube amplifiers |
| 07/09/1996 | US5535246 Method of video noise reduction using non-linear pre/de-emphasis |
| 07/09/1996 | US5534813 Anti-logarithmic converter with temperature compensation |
| 07/02/1996 | US5533064 Digital radio receiver having limiter amplifiers and logarithmic detector |
| 07/02/1996 | US5532644 Variable gain amplifying circuit |
| 06/26/1996 | EP0718969A2 Power controller for RF transmitters |
| 06/20/1996 | WO1996018996A1 Speech processing |
| 06/19/1996 | EP0717558A2 Circuit for the amplitude-dependent attenuation of a television signal |