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7339628 |
Method and apparatus to improve decoding of composite video signals
Video decoder systems in which both the analog-to-digital converter and the composite decoder are driven by the stable sample clock, such as a crystal source. The outputs of the composite decoder...
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7061540 |
Programmable display timing generator
A display timing generator is provided for selecting line types and providing synchronization timing signals for video signals. The display timing generator provides programmability for the user to...
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7053959 |
Digital video encoder
A mask circuit masks a digital video signal so that a video signal of an analog video signal is not outputted for a predetermined period after the start of output of a horizontal synchronizing...
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6891572 |
Video signal conversion processing apparatus and method
A signal processing apparatus and method for up or down conversion of an interlace signal with a high degree of accuracy. The frequency of a write system clock supplied from a PLL circuit is...
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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...
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6573944 |
Horizontal synchronization for digital television receiver
A horizontal synchronizing system, comprising: a source of a horizontal synchronizing signal; a source of first and second higher frequency horizontal drive signals; a phase detector for generating...
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6441812 |
Hardware system for genlocking
A computer system includes a graphics controller with a first refresh rate and a first horizontal synchronization signal; a secondary source of video data having a second refresh rate and a second...
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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...
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6014177 |
Video display apparatus having phase-locked loop used for synchronizing a horizontal scan frequency with a synchronizing input signal frequency
A video display apparatus comprises a phase-locked loop receiving a horizontal synchronous signal for generating an oscillation signal following the frequency of the horizontal synchronous signal,...
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5953071 |
Recovering horizontal synchronization
A method of, a device for, and a storage medium for recovering horizontal synchronization from a TV-signal with the use of a PLL. The number of periods during which a predetermined degree of...
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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...
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5247229 |
Adaptive scan control having horizontal scan locked clock system
A television receiver includes conventional systems for receiving a broadcast type signal and displaying the received signal upon a cathode ray tube. Vertical and horizontal scan system oscillators...
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5153725 |
Automatic frequency control circuit
An automatic frequency control circuit includes a phase comparator, a voltage-controlled oscillator, a frequency divider, a decoder, and a discriminating circuit. The phase comparator compares a...
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4636860 |
Picture display device comprising a noise detector
A picture display device having a synchronizing signal separating stage, a field synchronizing signal separating stage, a line synchronizing circuit and a field synchronizing circuit. The picture...
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4319276 |
Television receiver synchronizing arrangement
A television receiver including a synchronizing arrangement for providing line and field drive pulses for line and field output stages, which synchronizing arrangement comprises a line oscillator...
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4214260 |
Circuit for the line synchronization in a television receiver having a gated auxiliary control loop
A line synchronization circuit in a television receiver in which gate pulses are derived from the oscillatorsignal for keying-out the synchronizing signal, in which the gate pulses are positioned...
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4051526 |
Television system comprising a video storage device and a television receiver
A television system comprising a video tape recorder or the like and a television receiver, in which system the television signal contains an identification signal by which it is distinguished from...
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4048655 |
Variable speed horizontal automatic phase control
A television receiver includes conventional circuitry for receiving processing and detecting an information bearing signal. Vertical scansion means respond to recovered synchronizing information...
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3715499 |
DUAL MODE AUTOMATIC FREQUENCY CONTROLLED OSCILLATOR SYSTEM
A dual mode automatic phase controlled oscillator system employs multiple keyed phase comparators to produce control signals which are applied to lock the oscillator frequency and phase to a...
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