APPARATUS AND METHOD FOR COMPRESSING AND EXPANDING MULTIBIT DIGITAL PIXEL DATA

Method and apparatus for converting multibit pixel data to a lesser number of bit pixel data and re-expanding the compressed data. Luminance data for each pixel is established as the 5 most significant bits of the original luminance signal. The chrominance information for groups of pixels is subsamp...

Full description

Saved in:
Bibliographic Details
Main Authors RACKLEY; DARWIN P, SAENZ; JESUS A, LUCAS; BRUCE D
Format Patent
LanguageEnglish
Published 14.01.1992
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
CRYPTOGRAPHY
DECODING
DISPLAY
EDUCATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
SEALS
Online AccessGet full text

Cover

More Information
Summary:Method and apparatus for converting multibit pixel data to a lesser number of bit pixel data and re-expanding the compressed data. Luminance data for each pixel is established as the 5 most significant bits of the original luminance signal. The chrominance information for groups of pixels is subsampled, and a common chrominance value assigned to each of the pixels in a group. The resulting compressed pixels may be 8 bits wide providing economical possibilities to store the 8 bit wide data. The data is expanded for display by adding lower order data bits to the compressed luminance signal data bits. A subsampled chrominance data signal is appended to the expanded luminance data for display.
Bibliography:Application Number: US19900491370