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:
Sep. 19, 1989
Filed:
Feb. 09, 1989
Barrett E Guisinger, Saratoga, CA (US);
Bruce E Busby, Los Altos, CA (US);
Sony Corporation, Tokyo, JP;
Abstract
A method and system for recording an asynchronous, biphase encoded signal (such as a MIL-STD-1553B signal), having a first data rate, on a video tape recorder, which may be a consumer video tape recorder, and for recovering the encoded recorded data for subsequent transmission in its original format. The asynchronous biphase enceded signal is synchronized with a clock signal having frequency equal to twice the first data rate. The synchronized signal is then stored temporarily in a buffer memory as if it were an NRZ bit stream having bit rate equal to twice the first data rate. The data is read out of memory and combined with television-type synchronization pulses to produce a television-type signal for recording on the VTR. In the play back mode, the recorded VTR signal is separated into its data component (which consists of bursts of data that occupied the active video areas) and sync component. The invention eliminates the need to use specially designed recorders for asynchronous biphase encoded signals. Such specially designed recorders are ty pically expensive and have limited available record time.