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| Number | Title | Issue Date |
| 7327400 | Automatic phase and frequency adjustment circuit and method The invention is a circuit and method for automatically adjusting the phase and frequency of a pixel clock derived from analog image data. The circuit includes a phase locked loop circuit adapted to generate a phase locked loop clock responsive to a reference signal... | 02/05/2008 |
| 7250981 | Video signal processor and video signal processing method which interpolate a video signal using an interpolation factor based on phase information of a selected clock A video signal processor and a video signal processing method which can prevent the length of one period of a clock from being shortened and can output a video signal that is in phase with a reference signal. When a video data signal that has been processed using a ... | 07/31/2007 |
| 7050111 | Process and device for synchronizing a reference signal with respect to a video signal A synchronization process may include detecting successive horizontal synchronization pulses of a video signal, and a phase comparison between the successive detected pulses and the successive transitions of the reference signal for controlling the oscillator of the... | 05/23/2006 |
| 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 |
| 6839092 | Feed forward error correction in video decoder In accordance with an embodiment of the present invention a microprocessor in the horizontal phased lock loop reads the horizontal timing with respect to the sync input and provides an increment inch to the horizontal discrete time oscillator to make corr... | 01/04/2005 |
| RE38618 | Method and apparatus for automatic pixel clock phase and frequency correction in analog to digital video signal conversion A method for producing a digital video signal from an analog video signal, the analog video signal including an analog video data signal that is raster scanned in lines across a CRT screen to form consecutive frames of video information, the raster scanning controll... | 10/12/2004 |
| 6795043 | Clock generation circuit having PLL circuit A first PLL circuit (100) receives a flyback pulse (VFB) as a reference signal and outputs a clock signal (CLK1), and a delay circuit (200) outputs a flyback delay signal (VFBD) having a predetermined delay time corresponding to the amount of ho... | 09/21/2004 |
| 6674482 | Apparatus for generating sync of digital television An apparatus for generating a sync of a digital television in which an analog signal inputted to a digital television constantly provides stabilized synchronization regardless of a standard or a nonstandard so as to be processed. The apparatus for generat... | 01/06/2004 |
| 6670995 | Phase-locked loop circuit for horizontal synchronization signal A PLL circuit according avoids any large change in a frequency in a VCO (5) even if an input horizontal synchronization signal suddenly changes or a level of the frequency decreases to a predetermined value or less, or disappears. The PLL circuit comprise... | 12/30/2003 |
| 6567553 | Method for generating diversified image frame A method is provided for generating a diversified-shaped image frame and fixing a keystone image frame problem. The method includes steps of repeatedly determining a specific pixel frequency of one of the plurality of image signal lines and outputting the... | 05/20/2003 |
| 6549198 | Hout position control circuit Disclosed is a HOUT position control circuit used to control the horizontal position of display image in a multisync monitor. The circuit has: a first PLL circuit that is phase-locked with input horizontal synchronous signal; a second PLL circuit that is ... | 04/15/2003 |
| 6522365 | Method and system for pixel clock recovery A method of recovering a pixel clock for generating a digital image from an analog video signal is presented. The on and off-transition times for the active video portion of a digital image and the image size defined in a video standard are used to genera... | 02/18/2003 |
| 6177959 | Circuit and method for generating a clock signal synchronized with time reference signals associated with television signals A clock generation circuit for use in a television system displaying images encoded in television signals and images represented by network application data. The clock generation circuit generates a clock signal synchronized with HSYNC signals of the tele... | 01/23/2001 |
| 6034736 | Digital horizontal flyback control circuit A digital horizontal flyback control circuit for controlling the horizontal position of a video signal on a monitor screen receives a horizontal drive signal (21) and a flyback signal (22) generated when a video display beam is caused to move from the end... | 03/07/2000 |
| 6005634 | Method and apparatus for controlling the display of a video image A control circuit (100) which receives horizontal synchronising pulses (265) and generates a horizontal drive output signal (455) for a cathode ray tube (CRT) display. The horizontal control circuit (100) generates two ramp signals. A first ramp signal (4... | 12/21/1999 |
| 5940136 | Dot clock reproducing method and dot clock reproducing apparatus using the same The invention presents a dot clock reproducing apparatus for automatically reproducing the dot clock easily, by setting the dot clock frequency of a video signal source, and correcting the phase difference of the dot clock occurring in the transmission ro... | 08/17/1999 |
| 5854615 | Matrix addressable display with delay locked loop controller A matrix addressable display includes a delay locked loop formed from a delay chain formed from several variable delay blocks and a comparator. The delay locked loop receives a horizontal sync portion of an image signal and propagates the horizontal sync ... | 12/29/1998 |
| 5760839 | Horizontal synchronizing apparatus A horizontal synchronizing apparatus includes a source for providing a horizontal synch. signal, a horizontal deflection circuit for generating a deflection current having scanning intervals and blanking intervals repetitively successing in response to dr... | 06/02/1998 |
| 5677737 | Video compression for wide screen television A first phase locked loop has an oscillator operating at a first frequency and synchronized with a video signal. A counter in the first phase locked loop generates a plurality of timing signals. A second phase locked loop has an oscillator operating at a ... | 10/14/1997 |
| 5619276 | Adjustable video/raster phasing for horizontal deflection system Adjustment and maintenance of a phase relationship between a video signal and a scan synchronizing signal to assure proper horizontal centering is provided in a horizontal deflection system. A first phase locked loop generates a first timing signal at a f... | 04/08/1997 |
| 5539343 | Horizontal synchronizing signal generating circuit There is disclosed a horizontal synchronizing signal generating circuit for generating a horizontal synchronizing signal which has no frequency variations and which is in phase with an entered composite synchronizing signal if the entered composite synchr... | 07/23/1996 |
| 5331347 | Television sync and phase detector disable circuit A television receiver is subject to certain operational conditions which result in poor, unreliable or unusable separated sync pulse signals. During such conditions the use of unsuitable sync signals for synchronization and the like is inhibited to preven... | 07/19/1994 |
| 5043813 | Display locked timing signals for video processing A circuit for receiving a video signal with a horizontal synchronizing component at a horizontal scanning frequency generates an intermediate synchronizing signal synchronized with the horizontal synchronizing component. A horizontal deflection circuit ge... | 08/27/1991 |
| 4855828 | Television synchronizing arrangement A phase-lock-loop circuit of a two-loop deflection arrangement is located in a first integrated circuit. The phase-lock-loop circuit generates a first signal at 32XfH that is capacitively coupled to a tank circuit. A regenerative amplifier stag... | 08/08/1989 |
| 4769705 | Deflection synchronizing apparatus A phase-lock-loop circuit of a television deflection apparatus generates a first signal at the horizontal frequency and a second signal at 32 times the horizontal frequency that are both synchronized to a horizontal sync signal. A frequency divider that i... | 09/06/1988 |
| 4636861 | Two-loop line deflection system In a synchronized digital horizontal deflection system operating at 2×fH, a digital phase-lock-loop circuit generates first fH rate signal that is synchronized to the horizontal sync pulses, and a second fH rate second si... | 01/13/1987 |
| 4611229 | Auto range horizontal automatic phase control A circuit for phase locking the flyback pulse to a reference signal. A phase detector receives the flyback pulse (to be phase locked) and receives the reference signal. It outputs an error signal to a control circuit including first and second differentia... | 09/09/1986 |
| 4510527 | Horizontal deflection phasing arrangement A frequency and phase control circuit for a television receiver comprises a first phase detector for adjusting the frequency of the horizontal oscillator in response to horizontal sync pulses. A second phase detector maintains a predetermined phase relati... | 04/09/1985 |
| 4467359 | Horizontal synchronizing circuit A horizontal synchronizing circuit for use in a television receiver set comprises a horizontal AFC circuit so designed that an output from a voltage controlled oscillator oscillating at a frequency higher than a horizontal frequency is frequency-divided t... | 08/21/1984 |
| 4396948 | Dual mode horizontal deflection circuit A horizontal deflection turn-on circuit operates in the absence of trigger pulse normally derived by an AFPC loop. Under normal operation, the AFPC loop generates the trigger pulses based on a synchronized phase relationship with sampled flyback pulses. D... | 08/02/1983 |
| 4351001 | Horizontal phase lock loop for television A horizontal phase lock loop for use in a television receiver comprises first and second loops and a horizontal oscillator which generates a ramp signal at a frequency of twice the line frequency. The first loop locks the oscillator signal to the horizont... | 09/21/1982 |
| 4327376 | Dual phase-control loop horizontal deflection synchronizing circuit A television horizontal deflection synchronizing system uses two phase-lock loops. A horizontal oscillator operating at a frequency greater than the horizontal frequency is counted and a bilevel signal near the horizontal frequency is generated. A first p... | 04/27/1982 |
| 4317132 | System for the diffusion of data In a system for broadcasting data in combination with a television signal, he emitting station broadcasts, sets (blocks) of data which may be in-coming from several paths, the sets of data being time multiplexed. The present invention makes it possible to ... | 02/23/1982 |
| 4317133 | Two-loop horizontal AFPC system A television horizontal AFPC system is provided including a first AFPC loop responsive to horizontal sync signals for producing a noise immune signal in phase and frequency synchronism with the horizontal sync signals. A second AFPC loop includes a phase ... | 02/23/1982 |
| 4292654 | Deflection system and switched-mode power supply using a common ramp generator A television horizontal deflection system and a switched-mode power supply are provided which share a single sawtooth waveform generator for the generation of delayed deflection signals and delayed power supply gating signals, respectively. The sawtooth w... | 09/29/1981 |
| 4228462 | Line oscillator synchronizing circuit A television receiver having a line synchronizing circuit wherein gate pulses for keying the synchronizing signal are derived from the oscillator signal, the gate pulses being positioned, by means of an auxiliary phase control loop, substantially symmetri... | 10/14/1980 |
| 4081834 | System for compensating jitter of video signal A horizontal synchronizing signal contained in a composite video signal undergoing a phase fluctuation is phase modulated and substituted for the original horizontal synchronizing signal. The phase modulation of the horizontal synchronizing signal of the ... | 03/28/1978 |
