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| Number | Title | Issue Date |
| 7075372 | Programmable automatic signal amplitude control circuit A programmable automatic signal amplitude control circuit, comprising a variable gain amplifier and a negative feedback circuit. The negative feedback circuit includes a first circuit, and a second circuit having a peak detector, a level adjustable amplifier, and a ... | 07/11/2006 |
| 6937755 | Make-up and fashion accessory display and marketing system and method A method for simulating an appearance of make-up and fashion accessories on an image of a consumer and for marketing such products includes compiling a database of a plurality of products having appearance information for each product, acquiring a base image of a co... | 08/30/2005 |
| 6927791 | Color picture camera including an amplifier circuit for whiteness and brightness compensation The invention relates to a color picture camera (1, 31, 41) with a sensor (2) having a surface to image color pictures, which pictures can be converted into electrical signals, a red component of the color picture generating an electrical red value sig... | 08/09/2005 |
| 6642783 | Amplification device with optimized linearity The invention relates to an amplification device AD, comprising a first and a second amplifier AMP1 and AMP2, arranged in cascade, each amplifier being provided with a feedback loop Zi (where i=1 or 2) and having a gain proper Gi equal to Ai/(1+Ai.Zi). In... | 11/04/2003 |
| 5838194 | Constant settling time automatic gain control circuits Constant setting time is achieved in automatic gain control (AGC) circuits having a variable gain amplifier (VGA) and a feedback loop with a loop filter, where the VGA has a non-exponential gain characteristic and the loop filter is allowed to be non-line... | 11/17/1998 |
| 5652547 | Current comparator automatic output control A circuit for controlling the output level of a power amplifier is disclosed. A current comparator (230) compares a reference current with a sensed current which is representative of the power amplifier current state. The reference current is used not onl... | 07/29/1997 |
| 5434539 | Unity-gain linear-fader control for VCA Disclosed is a control circuit which provides a control signal to a control terminal of a voltage controlled amplifier (VCA), such as a SSM-2018 VCA manufactured by Analog Devices, such that a signal input to the VCA is amplified between full gain and ful... | 07/18/1995 |
| 5424679 | +12dB gain linear-fader control for VCA Disclosed is a control circuit which provides a control signal to a control terminal of a voltage controlled amplifier (VCA), such as a SSM-2018 VCA manufactured by Analog Devices, such that a signal input to the VCA is amplified between +12 dB gain and f... | 06/13/1995 |
| 4210882 | Delay network comprising a chain of all-pass sections A delay network, having a chain of all-pass sections, each comprising two separate branches, a resistive and a capacitive branch, which terminate in amplifiers with negligible signal consumption whose output signals are combined. This enables an analog de... | 07/01/1980 |
| 4048573 | Amplifier improvements for limiting clipping A differential amplifier is connected to an amplifier for comparing an amplifier input signal with the signal fed back by the amplifier feedback circuit. The output of the differential amplifier is coupled to a full wave rectifier the output of which cont... | 09/13/1977 |
| 4037163 | Automatic gain control circuit This disclosure is directed to an Automatic Gain Control (AGC) circuit wherein the AGC loop which generates the gain control signal is separate from and not closed through the amplifier whose gain is controlled. Such arrangement permits design of the AGC ... | 07/19/1977 |
| 4024463 | A.C. amplifier automatic gain control fast attack circuit A fast-attack circuit is employed in an A.C. amplifier automatic gain control circuit to temporarily apply a D.C. gain control signal immediately to the amplifier circuit in response to a sudden signal increase in excess of a predetermined threshold level... | 05/17/1977 |
| 4007428 | Automatic gain control of pulses The amplification of periodic or aperiodic pulses is varied by envelope detecting the received pulses and passing the resulting envelope waveform to a latching comparator which, when enabled, provides an output pulse whenever the input waveform has an amp... | 02/08/1977 |
| 4001694 | Automatic gain control circuit arrangements having a plurality of stages of amplification Automatic gain control is provided in a two stage amplifier in which the first stage has a signal voltage gain related to its supply voltage and the second, or output, stage comprises an output transistor. The load of the output stage comprises an earphon... | 01/04/1977 |
| 3967209 | Discriminating sonic detection system A bistatic velocity detector system for underwater detection of objects of redetermined magnitude wherein the water may be capable of continual variations in velocity. The system includes a compensator that has an automatic gain controlled amplifier whose ... | 06/29/1976 |
