Patent · US Expired

Image coding and decoding device

US4933761A · kind A · utility

44Cited by
9References
28Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 27, 1988
Grant dateJun 12, 1990
Priority date
Expiry dateApr 27, 2008

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N19/152
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

In an image coding and decoding device, input digital image signals are divided into blocks of prescribed size, and coding processing is performed on differential signals taken between the input block signal and interframe forcasting signals thereby enabling efficient transmission to be performed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.