Integrated circuit multiport memory having serial access bit mas

Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

395431, 395164, 345191, 345197, 345188, 36518901, 36518912, 36523015, 36523009, 364DIG1, G06F 1300

Patent

active

057873119

ABSTRACT:
An integrated circuit (IC) architecture includes a bit mask register (BMR) and a serial access memory (SAM) which share address decode and clock circuitry within a multiport random access memory chip. The integrated circuit also includes a random access memory and circuitry for performing a bit masked transfer between the serial access memory and the random access memory. Mask data may be clocked into the bit mask register, which may be cleared upon completion of a data transfer between the random access memory and the serial access memory. The mask data may also be inverted upon being transferred between the random access memory and the bit mask register. This architecture provides CLEAR and TRUE or COMPLEMENT masked transfer output ability in the BMR, and has utility in real-time video windowing in memory mapped computer graphics.

REFERENCES:
patent: 4648077 (1987-03-01), Pinkham et al.
patent: 4727363 (1988-02-01), Ishii
patent: 4823119 (1989-04-01), Ishii
patent: 4891794 (1990-01-01), Hush et al.
patent: 4933879 (1990-06-01), Ando et al.
patent: 4933900 (1990-06-01), Yamaguchi et al.
patent: 4942593 (1990-07-01), Whiteside et al.
patent: 4958345 (1990-09-01), Fujisaki
patent: 4999620 (1991-03-01), Ishii
"Datacube Proposal For One-Megabit Triple-Port Video Ram", J. Dunn; Datacube, Inc. Feb. 28, 1989.
Nakane, Masayoshi and Kaoru Tokushige; "Video Ram Chips Designed for Computer Graphics"; Nov. 1987; pp. 28 through 31; Journal of Electronic Engineering? (JEE).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Integrated circuit multiport memory having serial access bit mas does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated circuit multiport memory having serial access bit mas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated circuit multiport memory having serial access bit mas will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-33808

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.