The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 1987
Filed:
Oct. 19, 1984
Daniel P Devimeux, Paris, FR;
Jean-Claude R Jolivet, Paris, FR;
Societe Anonyme De Telecommunications, Paris, FR;
Abstract
This invention relates to digital transmission techniques whereby information produced in asynchronous form, for instance by variable-length coding and/or by conditional coding, is intended for transmission through a synchronous digital transmission path. More particularly, the invention concerns a receiving device comprising a picture buffer memory having a content that can be different from that of a picture buffer memory included in a transmitting device of the system, a circuit for detecting picture line and field synchronizations, a circuit for transcoding video information prior to its writing in the receiving device buffer memory and a circuit for monitoring writing and reading addresses in the buffer memory in terms of the detected synchronizations. A partial decoding of the video information is performed prior to entry in the receiving device buffer memory, and a synchronization of this memory is independent of the content in the transmitting device buffer memory.