Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1989-06-01
1991-10-01
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 21R, 358 12, H04N 974, H04N 964, H04N 1106
Patent
active
050538640
ABSTRACT:
The system is controlled by a control receiver receiving commands from the external computer across a primary control bus. A captured unit captures digital samples from a composite video signal and transfers them to a memory unit across a capture bus. The memory unit stores samples for two complete frames in four memory banks. The samples are transferred across a data bus to an external computer at addresses given by the computer on an address bus. The computer separates the samples into their luminance, inline and quadrature components, averages the inline component and the quadrature component for an area of two pixels by two pixels. The luminance component and the averaged inline and quadrature component are stored in the memory banks. The samples are stored as 5 luminance bits with 3 inline or quadrature bits for similar addresses in each of the four memory banks. During display all of the luminance and chrominance bits for a given area are latched by the memory unit and read by the display unit. The display unit has two multiplexers selecting the appropriate luminance bits for display for the appropriate pixel in a line and a third multiplexer selecting which line is to be displayed. Luminance, inline and quadrature digital to analog converters receive the selected luminance samples and the averaged inline and quadrature samples, convert them to analog form and transmit them to a luminance, inline and quadrature to red, green and blue matrix for display on a red, green, blue monitor.
REFERENCES:
patent: 4530004 (1985-07-01), Achiha et al.
patent: 4597005 (1986-06-01), Baleshta et al.
patent: 4613893 (1986-09-01), Weitzel
patent: 4633295 (1986-12-01), van de Polder et al.
patent: 4652903 (1987-03-01), Lucas
patent: 4656515 (1987-04-01), Christopher
patent: 4689669 (1987-08-01), Hoshino et al.
patent: 4719503 (1988-01-01), Craver et al.
patent: 4736239 (1988-04-01), Sprague et al.
patent: 4740832 (1988-04-01), Sprague
patent: 4745462 (1988-05-01), Dischert et al.
patent: 4758881 (1988-07-01), Laspada
patent: 4772938 (1988-09-01), Sasson
patent: 4797729 (1989-01-01), Tsai
patent: 4814882 (1989-03-01), Nuimura
Author: Charles L. Cohen Title: NEC Takes an Early Lead in Improved-Definition TV Date: Dec. 17, 1987 From: Electronics pp. 118-120.
Greening Wendy R.
Groody James J.
Thompson Electronics Ltd.
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