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| Number | Title | Issue Date |
| 5028999 | Source encoder for video pictures having a quantizer whose stepsize is controlled in an incremental manner The source encoder for video pictures described includes a preprocessing unit (PP) which supplies block-sequentially the data of a video picture. The video picture is then transferred to an encoding unit (C) via a controllable switch (S). The encoding uni... | 07/02/1991 |
| 4965671 | Picture pick-up device including a solid-state sensor and an electronic shutter operating with a minimum and maximum number of reset pulses In the construction of the sensor as a frame transfer sensor (FT) a control circuit therefor may not only be utilized for the information transfer and the electronic shutter, but also for a third purpose, namely for a reduction of the smear before integra... | 10/23/1990 |
| 4939688 | Dynamic range converter providing a multiplicity of conversion ratios An electric signal converter utilizes a processing unit to establish a polynomial of n terms, each term being a power of the signal at the input terminal of the processor multiplied by an appropriate coefficient. Feedback of the input signal to the proces... | 07/03/1990 |
| 4928180 | Camera with well defined shutter and suitable for recording television and cinematographic images A camera including a solid-state sensor (FT) of the charge transfer type, particularly a frame transfer sensor having a pick-up member (PP), a storage member (MP) and a parallel-in, series-out shift register member (SR), in which the number a of rows of r... | 05/22/1990 |
| 4910798 | Reverse Nyquist slope filter A circuit for providing a mirrored version of a preselected transfer function includes a circuit having the preselected transfer function coupled to receive a signal modulated by a signal that is to experience the mirrored transfer function. The modulated... | 03/20/1990 |
| 4905116 | X-radiation protection circuit An X-radiation protection circuit in a television receiver is responsive to both high voltage and high beam current conditions. A first detector is interconnected with an electron beam power source and monitors the beam current therefrom. The first detect... | 02/27/1990 |
| 4870399 | Apparatus for addressing active displays An input circuit to an active addressed display sequentially switches pixels of video information into high speed sample-and-hold elements which are coupled to corresponding signal lines on the substrate. The pixels of video information are on the signal ... | 09/26/1989 |
| 4866524 | Television picture overlay management device In a system in which there are available several pictures the device according to the invention enables the management of the overlays of pictures by implementing a mechanism according to which transition points are defined during the scanning. At these t... | 09/12/1989 |
| 4864120 | Electronic correction of photodiode radiant sensitivity A circuit comprising a semiconductor photodiode with a first and a second terminal and an internal series resistor, including an amplifier with a first input, a second input and an output, the first photodiode terminal being connected to the first amplifi... | 09/05/1989 |
| 4857861 | Amplifier arrangement with improved quiescent current control The first (T1) and the second (T2) output transistor of an amplifier arrangement are push-pull driven by means of a drive circuit (10) having two transistors (T11, T12) which are each loaded by a current source ... | 08/15/1989 |
| 4857898 | Data compression technique for reconfigurable remote control apparatus A method for compressing formatted code is disclosed. According to the method, the code is scanned so that all different burst and pause lengths of the code are found. The lengths are then arranged as elements of an array, with each element having a repre... | 08/15/1989 |
| 4856081 | Reconfigurable remote control apparatus and method of using the same A reconfigurable remote control apparatus and method for capturing the signals of transmission devices of at least two different protocols are provided. Because transmission devices either output signal bursts of different lengths at a carrier frequency f... | 08/08/1989 |
| 4853645 | Amplifier arrangement with quiescent current control The first (T1) and the second (T2) output transistor of an amplifier arrangement are push-pull driven by means of a drive circuit (10) having two transistors (T11, T12) which are each loaded by a current source ... | 08/01/1989 |
| 4851827 | Matrix display devices with redundant driving transistor arrangement for improved fault tolerance In a matrix display device, such as an LCD-TV, supply of data signals to each one of an array of display elements is controlled by respective switching devices circuits in response to applied switching signals. Each switching device circuit is fault-toler... | 07/25/1989 |
| 4845547 | Non-linear comb filter for color TV receivers A comb filter for separating chrominance and luminance signals for each sample of a video signal adaptively selects exactly one line above or one line below for processing with the sample of interest. In the process, luminance and chrominance signals are ... | 07/04/1989 |
| 4845441 | Amplifier circuit with bipolar transistors The invention relates to a circuit comprising an amplifier with bipolar transistors, which amplifier is fed by a signal source with a complex internal resistance and which has a signal negative feedback path connecting the amplifier output to the signal s... | 07/04/1989 |
| 4845497 | Conference circuit for a digital communication system A 001 conference circuit for a digital communication system in which the analog-to-digital and digital-to-analog converters of at least two subscriber terminal stations have different bandwidth of their processable analog signals or in the code format of ... | 07/04/1989 |
| 4843638 | Receiver for frequency hopped signals A receiver for frequency hopped signal on which an information signal is modulated on one of a plurality of equally frequency spaced carrier signals. A mixer receives the frequency hopped signals on one input, and on a second input, a local oscillator sig... | 06/27/1989 |
| 4843482 | Device for recording satellite TV broadcasts A device for recording satellite television broadcasts comprises a satellite receiver for processing a satellite television signal, a video recorder for recording the satellite television signal, and a storage device which controls the video recorder and ... | 06/27/1989 |
| 4841406 | X-radiation protection circuit An X-radiation protection circuit in a television receiver is responsive to both high voltage and high beam current conditions. A first detector is interconnected with an electron beam power source and monitors the beam current therefrom. The first detect... | 06/20/1989 |
| 4837619 | Scan rate conversion apparatus and method A signal processor useful for a non-integer scan rate conversion and non-integer sampling rate conversion, applies multiplicative factors to a multiplicity of initial data elements which are then summed to obtain a data element at the new sampling or scan... | 06/06/1989 |
| 4837612 | Automatic hue corrector apparatus and method with a capability to correct wide angle demodulator hue signal distortion created in response to predominantly green hue environments Color distortion created in non-standard decoding matrices is corrected by sensing potential differences between hue representative signals and applying correction potentials representative of these potential differences to color representative signals ex... | 06/06/1989 |
| 4837623 | Television interrupt circuit An interrupt circuit monitors a television audio demodulator or an external video input circuit and interrupts the video signal to CRT and the audio signal to television speaker(s) whenever a lost signal condition is detected. In the preferred embodiment,... | 06/06/1989 |
| 4836399 | Improved liquid tight transformer casing A liquid-tight seal is achieved in a two-part transformer casing by use of a U-shaped channel in the main body of the casing, the U-shaped channel being formed on one side by a rigid joint member and, on the other side, by a flexible member. Both members ... | 06/06/1989 |
| 4833727 | Remote-controlled receiver arrangement using a modulated carrier A remote controlled radio frequency receiver. A modulated carrier having a frequency F1 containing remote control data is received in a radio frequency receiver having a local oscillator and demodulator. The data contained in the received carrier is produ... | 05/23/1989 |
| 4827153 | Circuit arrangement for optionally connecting signal sources to a signal sink In a circuit arrangement for optionally connecting the outputs of a plurality of signal sources which produce signals consisting of d.c. and a.c. components to an input of a signal sink, an interference-free switching is accomplished by providing that all... | 05/02/1989 |
| 4824227 | Optimum riser angle for fresnel lenses in projection screens a Fresnel lens for use in rear projection screens wherein said lens has a plurality of facets facing away from the light source and each of said facets has an optimal riser angle, said riser angle varying from the center to the outer edge of said lens as ... | 04/25/1989 |
| 4823385 | System for processing coded information A system for processing coded information is disclosed. A receiver receives coded information from a source. The receiver is equipped with a decoder and a real time clock. The coded information is decoded only when the time signal from the real time clock... | 04/18/1989 |
| 4809349 | Method of automatically extracting a contrasting object in a digital image Method for extracting a contrasting object in a digital image. The method estimates a threshold S1 for each picture element, corresponding to a background estimation threshold representing an image contrast. A local contrast function GR(i,j) is... | 02/28/1989 |
| 4809069 | Multifunction memory for digital television A digital television processing section capable of picture enhancement, progressive scanning, and multiple picture-in-picture processing is provided. The preferred digital television processing section preferably comprises a picture enhancement processor ... | 02/28/1989 |
| 4802152 | Compact disc drive apparatus having an interface for transferring data and commands to and from a host controller A drive apparatus for an optical disc read system. An interface is provided to a host controller for reading out data on a compact disc. The read out data is converted from parallel to serial format, and transmitted with a clock stream to the host control... | 01/31/1989 |
| 4802238 | Radio receiver In a radio receiver which can be switched between at least two waveranges, the coil winding (33) of the oscillator circuit (31) has a further coil winding (36) inductively coupled to it with which a capacitor (37) is arranged in parallel for limiting the ... | 01/31/1989 |
| 4802010 | Method and apparatus for generating an adaptive peaking signal increasing the sharpness of a video signal A conventional peaking signal derived by delaying the incoming video or luminance signal first by one horizontal line delay and then by a second horizontal line delay is modified by multiplication with an adaptive factor. The adaptive factor is derived by... | 01/31/1989 |
| 4800384 | Arrangement for identifying peripheral apparatus such as work stations printers and such like, which can optionally be connected in geographically different locations to a communication network by means of local coupling units A modular coupling unit which functions as an interface between a communication unit or peripheral apparatus and the communication network includes a code word signal generator for generating a unique address code which is representative of the geographic... | 01/24/1989 |
| 4797679 | Radio direction-finding using time of arrival measurements A method and a system for radio direction-finding by measuring the Time of Arrival (ToA) of the leading edge of signals from a distant source at two relatively closely spaced receiving elements. In order to give a good degree of immunity to multipath, the... | 01/10/1989 |
| 4797632 | Variable gain amplifier circuit and its use in an automatic gain control arrangement An amplifier circuit whose input stage (1) has a variable gain and a DC voltage level on its load resistor (Rc), which is stabilized with the aid of means comprising a DC current generator (S), which varies contrary to the average output current of this i... | 01/10/1989 |
| 4796016 | Pixel rounding method and circuit for use in a raster scan display device and a raster scan display device comprising such circuit A pixel rounding method and circuit for bit-map graphics displays. The pixel codes are divided into two groups "high" and "low", and pixels with "high" groups codes are rounded against pixels with "low" group codes. The rounding can be prerounding or post... | 01/03/1989 |
| 4794447 | Method and apparatus for transmitting and receiving a high definition NTSC compatible television signal over a single DBS channel in time division multiplex form A high definition television signal having 525 lines per frame, a sequential scan, and 59.94 frames per second is encoded into a time multiplex signal for transmission. The encoder drops alternate line, but creates line difference signals which allow reco... | 12/27/1988 |
| 4789841 | Circuit arrangement for noise reduction at the minimum volume setting of an amplifier The invention relates to a circuit arrangement for a low-frequency amplifier having volume control, particularly in car radios, for noise reduction when the volume control means (10) is set at minimum. The noise reduction is achieved in that the signal pa... | 12/06/1988 |
| 4788591 | Switched-mode power supply for a television receiver provided with a stand-by system Television receiver including a switched-mode power supply which is regulated and capable of functioning both in self-oscillating mode and under the control of a line frequency synchronization. During normal operation there is synchronization, and the lin... | 11/29/1988 |
