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| Number | Title | Issue Date |
| 7355478 | RF amplifier with pulse detection and bias control An RF amplifier includes at least one RF amplification stage having an RF input signal and an RF output signal and a power signal circuit with power supply coupled with the amplification stage for providing a power signal to the amplification stage. A bias ci... | 04/08/2008 |
| 7184096 | Method and circuit for providing a horizontal scan signal for a television set A method for providing a horizontal scan control signal for a TV set from a horizontal synchronization signal contained in a composite video signal, the horizontal synchronization signal containing horizontal synchronization pulses and parasitic pulses, the scan con... | 02/27/2007 |
| 7015973 | Method and apparatus for generating coast signal for image processing A method and an apparatus for generating a coast signal for enabling or disabling a phase comparator in a phase-locked loop of image processing apparatus. The phase-locked loop generates a sampling clock signal, which is used to convert an analog image signal into a... | 03/21/2006 |
| 6956621 | High impedance digital full line video clamp A circuit for clamping a TV signal includes an input capacitor coupled to the TV signal, an analog-to-digital converter that outputs a digital signal corresponding to TV signal, a comparator that compares the digital signal to a black level signal, and a high impeda... | 10/18/2005 |
| 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 |
| 6909428 | Signal converter device The present invention provides a device for signal transfer, which outputs a treatment signal relating to a vertical-horizontal composite sync signal of a monitor and an integrated signal of the vertical-horizontal composite sync signal. There is a plurality of logi... | 06/21/2005 |
| 6720946 | Display device and interface circuit for the display device The present invention is directed to a display device such as a liquid crystal display including: a horizontal clock counter and a vertical clock counter which count each clock signal every horizontal cycle and every vertical cycle for a valid data period of a data ... | 04/13/2004 |
| 6628254 | Display device and interface circuit for the display device The present invention is directed to a display device such as a liquid crystal display including: a horizontal clock counter and a vertical clock counter which count each clock signal every horizontal cycle and every vertical cycle for a valid data period... | 09/30/2003 |
| 6384866 | Horizontal display positioning circuit for CRT-type display device A horizontal display positioning circuit for a CRT-type display device includes a microcomputer, a horizontal deflection circuit, and a horizontal positioning control circuit configured between the microcomputer and the horizontal deflection circuit, for ... | 05/07/2002 |
| 6366327 | Vertical sync detection and output for video decoder A technique for detecting three modes of video input signal and outputting a vertical sync signal based on the input signal. In a first mode, a standard video signal is received and a line counter is used to decode and output the vertical sync. In a secon... | 04/02/2002 |
| 6124850 | Display mode selection method and display unit controller A display mode selection method for selecting one display mode with respect to an input display signal from a table which defines a horizontal scanning frequency, a vertical scanning frequency and a resolution for a plurality of display modes, includes th... | 09/26/2000 |
| 5999222 | Digital vertical sync separator An improved high-performance vertical sync separator which can reliably operate during high frequency and non-standard video signal conditions and that utilizes a device-independent methodology. The synch separator includes a signal separator circuit havi... | 12/07/1999 |
| 5963268 | Semi-wide view display method and device using the same A semi-wide view display method and device using the same are provided with a semi-wide view function for arbitrarily converting an aspect ratio of a screen in a television. The method includes the steps of setting a display mode according to a user-selec... | 10/05/1999 |
| 5917551 | Synchronization stabilizing circuit and television signal receiver In a synchronization stabilizing circuit and a television signal receiver, the follow-up range (TX) of the synchronizing signal (SH) is changed based on the judged result (J1) that it is judged whether or not the synchronizing signal (SH) itself exists an... | 06/29/1999 |
| 5790200 | Horizontal synchronization signal stabilization method and apparatus An arrangement for stabilizing a horizontal synchronization signal, serving as an input signal for a phase-locked loop (PLL) for generating a clock signal, by separating the horizontal synchronization signal from a composite synchronization signal includi... | 08/04/1998 |
| 5686968 | Synchronizing signal generation circuit The present invention relates to a synchronizing signal generation circuit equipped with a PLL circuit. A pulse signal having a time constant that is broader than the clock width of a horizontal synchronizing signal included within synchronizing signals a... | 11/11/1997 |
| 5596372 | Video signal data and composite synchronization extraction circuit for on-screen display A composite synchronization extraction circuit is particularly suited for receiving composite video signals containing closed captioning data in raster scan line 21 by means of a signal CMOS integrated circuit device. A dual mode voltage clamp is realized... | 01/21/1997 |
| 5060066 | Integrating-phase lock method and circuit for synchronizing overlay displays on cathode-ray-tube monitors of digital graphic information and video image information and the like A novel separate synchronizing error signal integrating filter section and error signal phase lock loop section independently controllable for such purposes as controlling the horizontal synchronization of overlayed video and graphic display rasters, part... | 10/22/1991 |
| 5019907 | Pulse generating circuit Horizontal synchronizing signals included in a video signal are inputted to a PLL circuit. A counter as a divider in the PLL circuit outputs signals which are synchronized with the horizontal synchronizing signals. A gate pulse generator counts the output... | 05/28/1991 |
| 4992872 | Method of synchronizing the horizontal deflection of electron beams in television receivers A process for synchronizing horizontal deflection of electron beams in television recievers having a reproduced picture with a visible component, when no transmission signals from a television transmitter are present. If an emitted signal is not available... | 02/12/1991 |
| 4949178 | Coincidence circuit in a line synchronizing circuit arrangement A coincidence circuit in a line synchronizing circuit arrangement for a picture display device. The coincidence circuit detects a coincidence state of an incoming line synchronizing signal which originates from a synchronizing signal separator, and a loca... | 08/14/1990 |
| 4860102 | Circuitry for automatically switching the control speed of a phase-control circuit 1. Circuitry for automatically switching the control speed of a phase-control circuit. 2.1. The switching is, especially in conjunction with different signal sources employed with a television receiver, either difficult or possible only by reserving presc... | 08/22/1989 |
| 4809068 | Clock signal generating circuit for television receiver A clock signal generating circuit for a television receiver, which generates a composite synchronizing signal and a masking signal for controlling the operation of the circuit, the composite synchronizing signal including at least two partial signals. The... | 02/28/1989 |
| 4764810 | Horizontal phase locked loop system A horizontal phase locked loop includes a horizontal phase detector having a current source transistor with a pair of resistors connected across its base-emitter circuit. A switching transistor, supplied with an input signal during the vertical blanking i... | 08/16/1988 |
| 4709268 | Automatic frequency pulling circuit An automatic frequency pulling circuit produces a signal in synchronism with a horizontal synchronizing signal from a video signal processing device or the like. The automatic frequency pulling circuit comprises an equalizing pulse remover responsive to a... | 11/24/1987 |
| 4660080 | Synchronization circuit responsive to time-multiplexed signals A phase-lock loop circuit of a television apparatus is synchronized by a horizontal synchronizing input signal. The phase-lock loop circuit includes a frequency-to-voltage converter that is responsive, during vertical trace, to the synchronizing input sig... | 04/21/1987 |
| 4647970 | Sync signal reproducing circuit in television receivers A sync signal reproducing circuit for television receivers. The circuit comprises; a composite sync signal source for supplying a composite sync signal, a voltage controlled oscillator, a first frequency divider connected to the voltage controlled oscilla... | 03/03/1987 |
| 4425576 | Picture stabilizing circuit in color television receiver A picture stabilizing circuit in a color television receiver decodes a count value in a counter comprising a vertical synchronizing circuit of a pulse count system for generating an ineffective-rendering pulse covering a period including a vertical synchr... | 01/10/1984 |
| 4266245 | Differential amplifier current repeater A differential amplifier is provided, including first and second emitter coupled transistors responsive to an input signal applied to one of their base electrodes, and a current source transistor having its collector-to-emitter path serially coupled betwe... | 05/05/1981 |
| 4253116 | Television synchronizing system operable from nonstandard signals A synchronizing signal for a television camera includes a count-down system by which standard horizontal and vertical synchronizing signals are generated and added to the video signals being produced. In order to allow the camera to be synchronized to a n... | 02/24/1981 |
| 4251833 | Television horizontal AFPC with phase detector driven at twice the horizontal frequency A television phase-lock (AFPC) loop is used to maintain a horizontal oscillator in synchronism with horizontal synchronizing signals in the presence of noise. The AFPC loop includes a phase detector and a controlled oscillator. The synchronizing signals a... | 02/17/1981 |
| 4250525 | Television horizontal AFPC with phase detector driven at twice the horizontal frequency An AFPC loop for TV horizontal oscillator suitable for use with sync signals subject to timing instability includes means for maintaining a long response time during the equalizing and vertical sync intervals to reduce drift, and shortens the loop respons... | 02/10/1981 |
| 4228463 | Switched AFPC loop filter with offset voltage cancellation A television horizontal AFPC loop includes a filter, the time constant of which can be switched at the vertical rate for improved operation from standard broadcast signals and from video tape recorders. A transistor switch introduces a voltage offset whic... | 10/14/1980 |
| 4144544 | Television horizontal oscillator frequency control arrangement for use with tape recorder A television receiver used in conjunction with a video tape recorder having a step change in phase of the horizontal synchronizing pulse occurring prior to the vertical blanking signal produces a distorted video display. The video distortion results from ... | 03/13/1979 |
| 4144545 | Television horizontal oscillator frequency control arrangement for use with a tape recorder A television horizontal oscillator for use with a video source having a step change in the phase of the horizontal synchronizing pulses occurring at the vertical rate uses a phase-lock loop including a low-pass filter having a controllable filter characte... | 03/13/1979 |
| 3991270 | Circuit arrangement for line synchronization in a television receiver A line synchronizing circuit including a gated phase discriminator. Because the circuit may lock in to an equalizing pulse, which may give rise to a vertically divided image, gating is rendered inoperative for a given time after the post-equalization time... | 11/09/1976 |
| 3937876 | Picture display apparatus including a line phase discriminator for generating a control voltage A circuit arrangement in a picture display apparatus including an integrator having a time constant which is of the same order as one field period and which integrates the control voltage generated by the line phase discriminator. The voltage thus integra... | 02/10/1976 |
