Apparatus for defining an effective picture area of a high defin

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358230, H04N 701

Patent

active

049530259

ABSTRACT:
In an apparatus for converting received video signals of a first format, which has a first number of horizontal lines in a field or frame and a picture display of a first aspect ratio, to video signals of a second format, which has a second number of horizontal lines in a field or frame and a picture display of a second aspect ratio; an analog-to-digital converter converts the received video signals of the first format to digital video signals, a memory has addresses at which there are written at least a field of the digital video signals of the first format, whereupon, a reading circuit reads from the memory addresses less samples of the digital video signals than were written in the memory and the digital video signals thus read from the memory are converted back to analog form, and a controller is provided for variably determining a start address of the addresses in the memory from which video signal data are read. In the case where the first aspect ratio is larger than the second aspect ratio, the selection of the start address determines a portion or portions of the picture display of the first aspect ratio to be omitted at least at one side of the picture display of the second aspect ratio.

REFERENCES:
patent: 4172264 (1979-10-01), Taylor
patent: 4223343 (1980-09-01), Belmares-Sarabia
patent: 4476484 (1984-10-01), Haskell
patent: 4476493 (1984-10-01), Poetsch
patent: 4513324 (1985-04-01), Poetsch
patent: 4651208 (1987-03-01), Rhodes
patent: 4654696 (1987-03-01), Dayton
patent: 4730215 (1988-03-01), Jose
Fernseh-Und Kino-Technik, vol. 42, No. 4, Apr. 1988, pp. 177-184, Heidelberg, DE; G. Holoch: "Aspekte der Normwandlung von HDTV in bestehende Fernsehstandards".

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

Apparatus for defining an effective picture area of a high defin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for defining an effective picture area of a high defin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for defining an effective picture area of a high defin will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1593644

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