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| Number | Title | Issue Date |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 5589891 | Video synchronized power module The synchronized transformer-coupled power supply circuit includes a transformer 20; an input power signal coupled to a primary winding 22 of the transformer 20; voltage regulators 48-53 coupled to secondary windings 24 and 26 of the transformer 20; and a... | 12/31/1996 |
| 5469218 | Image signal processing device with conversion of sample frequency of digital color-difference data signals An image signal processing device according to this invention is a device for processing an image signal. The device is arranged to input digital data corresponding to two kinds of color-difference signals in synchronism with a clock signal corresponding ... | 11/21/1995 |
| 5268762 | Video signal synthesizing system for synthesizing system's own signal and external signal In a video signal synthesizing system for synthesizing at least one inner video signal such as an analog video signal, digital image data, and encoded, compressed image data and so on from a system's own apparatus and an external analog video signal such ... | 12/07/1993 |
| 5235411 | Signal processing apparatus with improved alignment switching between color difference signals A signal generator 51 supplies a switching signal to a color difference signal output switch 44 in response to a line index signal LI and/or a horizontal synchronizing signal HD, thus avoiding the outputting of a signal obtained by adding two color differ... | 08/10/1993 |
| 5227867 | Apparatus for line-alternating interpolation of chroma signals An apparatus for line-alternating interpolation of chroma signals in a MUSE decoder for a high definition (HD) television can simultaneously transmit color difference signals such that a color difference signal of an untransmitted scanning line is restore... | 07/13/1993 |
| 4974063 | Video signal processing device In a device for processing a video signal including line sequential signals which have DC offset during a specific portion of every horizontal scanning period, the line sequential signal is rearranged into line concurrent signals on the basis of a level d... | 11/27/1990 |
| 4910587 | Information signal processing apparatus An apparatus for processing a sequential information signal in which a plurality of kinds of information signals having different offset levels according to the kind of information are sequentially allocated at a predetermined period. When the sequential ... | 03/20/1990 |
| 4800423 | Interface module for superimposing alphanumeric characters upon RGB video signals An interface module for superimposing alphanumeric characters upon external GB video signals received by a SCART connector of a television set is disclosed. The interface includes a central processing unit (CPU) controlling the command input from an alphan... | 01/24/1989 |
| 4746969 | Video signal processing device for line sequential signals A video signal processing device rearranges line sequential signals included in a video signal into line simultaneous signals by detecting the kinds of information carried by them, respectively, for horizontal scanning periods; and adequately inhibits the... | 05/24/1988 |
| 4739391 | Video signal processing apparatus for converting line sequential signals into line simultaneous signals A video signal processing apparatus wherein the phase of a periodic signal the period of which relates to the horizontal scanning period of a video signal including line sequential signals with a discontinuous point at every predetermined period, is shift... | 04/19/1988 |
| 4574301 | SECAM Color identifying circuit The invention relates to color television receivers. Bursts which are transmitted during the line and field retrace-periods and whose frequencies change from one line to the other between 4.25 MHz (blue, luminance) and 4.40625 MHz (red-luminance) are used to o... | 03/04/1986 |
| 4489342 | MOSFET Integrated delay circuit for digital signals and its use in color-televison receivers To adjust time delays in equidistant steps, an inverter chain is provided with an even number of static inverters of identical topology. The output of one of the even-numbered inverters is connected to the signal output via a selector switch. During suita... | 12/18/1984 |
| 4408222 | Phase detector for television tuning systems and the like A phase detector suitable for use in an identification circuitry of a PAL/SECAM Television Receiver or the like for identifying the line sequence, wherein the input of the phase detector is adapted to receive the differential output signals from a frequen... | 10/04/1983 |
| 4371793 | Dual-mode control signal generating apparatus Dual-mode control signal generator, responding to alternative forms of mode selection signal input by generating different arrays of control signal outputs, includes a trio of voltage comparators. In first form, mode selection signal consists of pulse tra... | 02/01/1983 |
| 4357623 | SECAM Identification system Color TV receiver subject to reception of SECAM signals incorporates dual-mode identification system for identifying and correcting an incorrect mode of line-by-line switching in SECAM demodulation apparatus. In one (horizontal) mode of operation, identif... | 11/02/1982 |
| 4246599 | Abnormal separation detecting circuits of chromatic signals of SECAM systems Abnormal separation detecting circuit of chromatic signals transmitted by a SECAM system comprises a detection circuit which receives a chromatic signal made up of R-Y signals and B-Y signals respectively added with identification signals I1 an... | 01/20/1981 |
| 4162508 | Synchronizing signal generator for PAL-TV signal processing system A synchronizing signal generator for a PAL-TV (television) signal processing system has a pulse oscillator which produces a pulse with the frequency n.multidot.fsc in which fsc is the frequency of a color subcarrier signal and n is a... | 07/24/1979 |
| 4072983 | SECAM identification circuit SECAM burst signals, which recur at the line scanning rate and which change on a line-to-line basis between 4.25 MHz (corresponding to a B-Y subcarrier frequency) and 4.40625 MHz (corresponding to an R-Y subcarrier frequency) are utilized to provide line-... | 02/07/1978 |
