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:
Nov. 30, 1993
Filed:
Mar. 18, 1991
Mikio Fujiwara, Neyagawa, JP;
Sigekazu Togashi, Katano, JP;
Yasunori Kawakami, Osaka, JP;
Toshihiro Uehara, Kawasaki, JP;
Hotaka Minaguchi, Ebina, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Nippon Hoso Kyokai, Tokyo, JP;
Abstract
A digital signal recording/reproducing system specifically has an adaptive automatic equalizer for performing automatic waveform equalization disposed in a reproducing circuit of an RF system. In order to provide a run-up pattern which enables stable operation settlement of the adaptive automatic equalizer and a clock reproducing PLL at the time of reproduction, the digital signal recording/reproducing system comprises a run-up code generator for producing a run-up pattern composed of a combination of at least two digital value series of different inversion intervals. Thus, since an optimum run-up pattern for the reproducing circuit of the RF system is produced and recorded on a recording medium within a fixed period at the time recording, stable settlement of the operation of the clock reproducing PLL and the adaptive automatic equalizer is attained within a run-up period at the time of reproduction, thereby making it possible to suppress occurrence of a code error to a minimum.