Crossbar converter

Details Crossbar converter Crossbar converter

1989-01-13

1991-09-10

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340798, G09G 500

Patent

active

050477609

ABSTRACT:
A crossbar converter to format 32 bit raster formatted I/O data into 5.times.4 patch formatted eight bit pixel data enables a 160 bit wide pixel data bus to be used so as to attain a high bandwidth for I/O devices. By using the wide pixel data bus and patch format for I/O, the facilities of the an screen memory and an arbitrary shape clipper can be made available to process a real time video window on a high resolution, bit mapped display monitor. The crossbar converter can be used to convert the parallel input of standard I/O devices into patch format, (five by four by eight, for example). The thus converted I/O data may be used by an off screen memory and an arbitrary shape clipper at high transfer rates.

REFERENCES:
patent: 4092728 (1978-05-01), Baltzer
patent: 4533910 (1985-08-01), Sukonick et al.
patent: 4642621 (1987-02-01), Nemoto et al.
patent: 4663729 (1987-05-01), Matick et al.
patent: 4692757 (1987-09-01), Tsuhara et al.
patent: 4710767 (1987-12-01), Sciacero et al.
patent: 4755810 (1988-07-01), Knierim
patent: 4816815 (1989-03-01), Yoshiba
patent: 4845480 (1989-07-01), Satou
patent: 4845640 (1989-07-01), Ballard et al.

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