Inventor

WILLIS DONALD H

US80 patents

⚠️ This page may combine multiple inventors who share the name “WILLIS DONALD H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WILLIS DONALD H

RCA CORP

Digital-to-analog conversion system as for use in a digital TV receiver

Regulated power supply circuit

Analog-to-digital conversion system as for a narrow bandwidth signal processor

Video signal recursive filter with luma/chroma separation

Interlace to non-interlace scan converter for RGB format video input signals

Timing correction for a picture-in-picture television system

Digital signal processing apparatus having digital dither

Television synchronizing apparatus

Video signal processor with bias error compensation

Television receiver having character generator with burst locked pixel clock and correction for non-standard video signals

Hue correction circuit for a digital TV receiver

Scaling device as for quantized B-Y signal

Switched capacitor S-correction circuit

Degaussing circuit for television receiver having switched mode power supply

Television receiver, push-pull inverter, ferroresonant transformer power supply synchronized with horizontal deflection

Automatic peak beam current limiter

High voltage protection circuit

Frame comb filter having freeze frame feature

Television display system with flicker reduction processor having burst locked clock and skew correction

Circuit for generating a clock signal at an AC line frequency

Timing correction circuitry as for TV signal recursive filters

High voltage control circuit for video display apparatus

Two-loop line deflection system

Video signal processor with automatic kinescope beam current limiter

Deflection circuit with a switched mode modulator circuit

Progressive scan video processor

Digital signal level overload system

Dedithering circuitry in digital TV receiver

Progressive scan television receiver for non-standard signals

Analog-to-digital conversion apparatus including double dither signal sources

Video signal processor with automatic kinescope white balance and beam current limiter control systems

THOMSON CONSUMER ELECTRONICS

Luma/chroma separation filter with common delay element for comb filter separation and recursive noise reduction of composite video input signal

Formatting television pictures for side by side display

Asymmetric picture compression

Managing letterbox displays

Wide screen television

Picture resolution enhancement with dithering and dedithering

Side by side television pictures

Independent horizontal panning for side-by-side pictures

Adaptive letterbox detector

Circuit for generating a scan at a multiple of a synchronizing signal

Progressive scan television system using luminance low frequencies from previous field

Synchronizing circuit

RCA LICENSING CORP

Dual port video memory system having semi-synchronous data input and data output

Method and apparatus for correcting timing errors as for a multi-picture display

Adaptive Y/C separation apparatus for TV signals

Circuitry for processing a field of video information to develop two compressed fields

Memory efficient interlace apparatus and method as for a picture in a picture display

Video switching apparatus having interference prevention feature

TV receiver having freeze field display