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US 5,689,436 AGranted
Apparatus for compressing and decompressing video signal
AssigneeSeiko Epson Corporation
InventorKesatoshi Takeuchi
Life of this patent
Estimating the term…
Abstract
While a image is displayed on a color monitor 44 based on a first digital video signal DRGB1 output from a first A-D converter 52, a second digital video signal DRGB2 output from a second A-D converter 54 is compressed to capture the image. The image represented by the compressed video data has a smaller size than the original image. In restoration of the image, a video decompressing unit 66 enlarges the size of the image and displays an enlarged image on the color monitor 44.
Claims14
An apparatus for compressing a video signal, said apparatus comprising:
- a display device for displaying a video image;
- a frame memory for storing a video signal to be supplied to said display device;
- receiving means for receiving a video signal representing an image;
- a video controller for writing said video signal supplied from said receiving means into said frame memory and reading out said video signal from said frame memory to display said image on said display device as a function of said video signal;
- reducing-compressing means for processing said video signal supplied from said receiving means to reduce a size of said image and compressing a video signal representing the reduced image to generate a compressed video signal said processing and said compressing being executed without storing said video signal into said frame memory;
- and
- a memory for storing said compressed video signal.
4 more elements
An apparatus for decompressing a compressed video signal, said apparatus comprising:
- a displays device for displaying a video image;
- a frame memory for storing a video signal to be supplied to said display device;
- a memory for storing a compressed video signal;
- decompressing-enlarging means for decompressing said compressed video signal stored in said memory to generate a restored video signal, and processing said restored video signal to enlarge a size of an image represented by said restored video signal said decompressing and said processing being executed before supplying said restored video signal or said frame memory;
- and
- a video controller for writing said restored video signal supplied from said decompressing-enlarging means into said frame memory and reading out said restored video signal from said frame memory to display said image on said display device as a function of said restored video signal.
3 more elements
An apparatus for compressing a video signal and decompressing a compressed video signal, said apparatus comprising:
- a display device for displaying a video image;
- a frame memory for storing a video signal to be supplied to said display device;
- a video controller for writing a given video signal into said frame memory and reading out a video signal from said frame memory to display a video image on said display device as a function of the read-out video signal;
- receiving means for receiving a video signal representing an image and supplying said video signal to said video controller, to thereby display said image on said display device as a function of said video signal;
- reducing-compressing means for processing said video signal supplied from said receiving means to reduce a size of said image and compressing a video signal representing the reduced image to generate a compressed video signal said processing and said compressing being executed without storing said video signal into said frame memory;
- a memory for storing said compressed video signal;
- and
- decompressing-enlarging means for decompressing said compressed video signal stored in said memory to generate a restored video signal, processing said restored video signal to enlarge a size of an image represented by said restored video signal, and supplying said restored video signal representing the enlarged image to said video controller, to thereby display said enlarged image on said display device as a function of said restored video signal.
5 more elements
A computer system for compressing a video signal, the computer system comprising:
- microprocessor;
- a processor bus coupled to said microprocessor;
- a display device for displaying a video image;
- a frame memory for storing a video signal to be supplied to said display device;
- receiving means for receiving a video signal representing an image;
- a video controller, coupled to said processor bus, said frame memory, and said display device, for writing said video signal supplied from said receiving means into said frame memory and reading out said video signal from said frame memory to display said image on said display device as a function of said video signal;
- reducing-compressing means, coupled to said processor bus, for processing said video signal supplied from said receiving means to reduce a size of said image and compressing a video signal representing the reduced image to generate a compressed video signal said processing and said compressing being executed without storing said video into said frame;
- and
- a memory for storing said compressed video signal.
6 more elements
A computer system for decompressing a compressed video signal, the computer system comprising:
- a microprocessor;
- a processor bus coupled to said microprocessor;
- a display device for displaying a video image;
- a frame memory for storing a video signal to be supplied to said display device;
- a memory, coupled to said processor bus, for storing a compressed video signal;
- decompressing-enlarging means, coupled to said processor bus, for decompressing said compressed video signal stored in said memory to generate a restored video signal, and processing said restored video signal to enlarge a size of an image represented by said restored video signal, said decompressing and said processing being executed before supplying said restored video signal to said frame memory;
- and
- a video controller, coupled to said processor bus and said frame memory, for writing said restored video signal supplied from said decompressing-enlarging means into said frame memory and reading out said video signal from said frame memory to display said image on said display device as a function of said video signal.
5 more elements
A computer system for compressing a video signal and decompressing a compressed video signal, said computer system comprising:
- a microprocessor;
- a processor bus coupled to said microprocessor a display device for displaying a video image;
- a frame memory for storing a video signal to be supplied to said display device;
- a video controller, coupled to said processor bus, said display device, and said frame memory, for writing a given video signal into said frame memory and reading out a video signal from said frame memory to display a video image on said display device as a function of the read-out video signal;
- receiving means for receiving a video signal representing an image and supplying said video signal to said video controller, to thereby display said image on said display device as a function of said video signal;
- reducing-compressing means, coupled to said processor bus, for processing said video signal supplied from said receiving means to reduce a size of said image and compressing a video signal representing the reduced image to generate a compressed video signal, said processing and said compressing being executed without storing said video signal into said frame memory;
- a memory, coupled to said processor bus, for storing said compressed video signal;
- and
- decompressing-enlarging means, coupled to said processor bus, for decompressing said compressed video signal stored in said memory to generate a restored video signal, processing said restored video signal to enlarge a size of an image represented by said restored video signal, and supplying said restored video signal representing the enlarged image to said video controller, to thereby display said enlarged image on said display device as a function of said restored video signal.
6 more elements
Dependencies are inferred from the claim text.