Video ram method for outputting serial data

Static information storage and retrieval – Read/write circuit – Serial read/write

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

36518902, 36518905, 365203, 365 49, G11C 700

Patent

active

055724779

ABSTRACT:
The present invention relates to a video RAM as a dual port memory, and more particularly to the video RAM which is adjustable to a high speed system clock and a serial data output method thereof. In accordance with the present invention, the video RAM having a data register which outputs a serial data in response to the input of the serial address which is synchronized with a serial clock, comprises a first data I/O line for transferring the data which is synchronized with the even serial address and then is outputted from the data register, and a second data I/O line for transferring the data which is synchronized with the odd serial address and then is outputted from the data register. The video RAM according to the present invention has independent serial data output paths respectively for even address and odd address, thus enabling the serial data to be outputted every period of the serial clock. Consequently, it is possible to reduce the operation cycle time of the video RAM and to transfer data to a CRT at a high speed. In addition, it is possible to reduce the time interval between respective periods of the system clock.

REFERENCES:
patent: 4450538 (1984-05-01), Shirasaka
patent: 4498155 (1985-02-01), Mohan Rao
patent: 5121360 (1992-06-01), West et al.
patent: 5379263 (1995-01-01), Ogawa et al.

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

Video ram method for outputting serial data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video ram method for outputting serial data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video ram method for outputting serial data will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2020324

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