Television receiver with teletext receiving function and a metho

Details Television receiver with teletext receiving function and a metho Television receiver with teletext receiving function and a metho

1989-03-27

1992-04-28

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358183, H04N 7087

Patent

active

051092794

ABSTRACT:
Teletext data stored in a video RAM is developed in a work RAM. A CPU selectively deletes picture elements from the developed teletext data, to thereby compress the teletext data into data adapted for display in an auxiliary screen which is e.g., 1/4 of the display screen of a CRT. The compressed teletext data is written into the video RAM. A display controller supplies the compressed teletext data stored in the video RAM to a synthesizing circuit, together with an appropriate display switching signal representing a timing for switching between the compressed teletext data and a TV broadcast video signal. In accordance with the display switching signal, the synthesizing circuit selectively supplies the TV broadcast video signal and the compressed teletext data to a video output circuit. Accordingly, the teletext picture compressed to a 1/4 size is displayed on the display screen of the CRT as an auxiliary screen image, while being superimposed on the TV picture.

REFERENCES:
patent: 51846 (1987-03-01), Osawa
patent: 4204227 (1980-05-01), Gurley
patent: 4233628 (1980-11-01), Ciciora
patent: 4633297 (1986-12-01), Skerlos
patent: 4729028 (1988-03-01), Micic et al.
patent: 4750039 (1988-06-01), Willis
patent: 4796089 (1989-01-01), Imai

Affiliated with

Also associated with

Rating

Television receiver with teletext receiving function and a metho does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Television receiver with teletext receiving function and a metho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television receiver with teletext receiving function and a metho will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1252196