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. 18, 1997
Filed:
Dec. 27, 1995
Yoshihito Shimazaki, Tokyo, JP;
Kenichiro Hosoda, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A data receiver receives code data having a variable data rate and encoded with any one of a plurality of data rates and then repeated in accordance with the respective data rates to be provided with the same data rate thereby, and restores, frame by frame, the received code data to data having original data rates. The receiver has a data rate detecting circuit which sequentially receives one frame of code data having the same data rate at a time, and detects the data rate of the code data assigned before the repetition. A data rate restoring circuit restores, based on the detected data rate, the frame of code data to the data having the original data rate. A data reproducing circuit reproduces the original signal out of the code data restored by the data rate restoring circuit. The data rate detecting circuit has a calculating circuit for calculating the autocorrelation functions of the frame of code data to thereby determine how many times the code data have been repeated, and a decision circuit for determining the data rate of the frame of code data assigned before the repetition on the basis of the characteristic of the data rate in the autocorrelation functions. The data rate restoring circuit and data reproducing circuit perform the respective processings on the basis of the determined data rate.