Image sequence processor for personal computer

Details Image sequence processor for personal computer Image sequence processor for personal computer

1995-09-06

1998-05-19

Liang, Regina

Computer graphics processing and selective visual display system

Display peripheral interface input device

345113, G09G 504

Patent

active

057541655

ABSTRACT:
It is sought to display a pluralities of full motion image sequences together with personal computer texts, graphics, etc. on a personal computer display. NTSC signal converters 100 (10A, 10B, . . .) each provided for each video input channel each send out color digital brightness signals of a contracted image size, obtained through conversion of a video input signal. These signals are written in and read out from R, G and B color signal memories 20 under control of a command from a write/read controller 23. The read-out color digital brightness signals are converted in a digital-to-analog converter 30 into analog signals. An overlay controller 31 overleys these analog signals over R, G and B analog inputs from a personal computer under control of a display position determining signal supplied from a CPU via a personal computer bus 41, thus producing R, G and B analog outputs which are displayed as image sequence on the same personal computer display. For the display of a plurality of image sequences, the NTSC signal converter and color signal memories (20e, 20g and 20b) are provided for each video input channel.

REFERENCES:
patent: 4599611 (1986-07-01), Bowker
patent: 4689613 (1987-08-01), Ikeda
patent: 4721951 (1988-01-01), Holler
patent: 5327156 (1994-07-01), Masukane et al.

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