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:
Feb. 27, 1990
Filed:
Jun. 01, 1988
Roland Mester, Darmstadt, DE;
Jurgen Heitmann, Alsbach-Hahnlein, DE;
Rolf Loos, Muster, DE;
Jurgen Muller, Griesheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Four picture field memories which contain storage places for luminance data, chrominance data, error flags and write flags are switchable from write in to read out by changeover switches controlled by an access control unit for connection of the address and control inputs of the memories either to a write in control circuit or a read out control circuit. The access control unit can be set for operation at normal speed, which is the recording speed of the tape from which signals are read out, below normal speed or above normal speed. The read-out control circuit is synchronized by a synchronizing signal that contains a vertical scan frequency reference pulse. The several picture field memories are cyclically interchanged, written into and read out from. One of the picture field memories is read out while the others are available for write-in. The incoming error flags are passed on. Use is made of write flags and error flags to improve operation at speeds different from the recording speed.