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. 12, 1985
Filed:
Mar. 06, 1984
Masaaki Kato, Kawasaki, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A variable-length encoding device includes a shift register for converting a binary data string representing an audio signal into unit words of three 2-bit data (e.g., (1,1), (1,0), and (0,1) and two 3-bit data (e.g., (0,0,0) and (0,0,1). The 3-bit data words are obtained such that the remaining 2-bit data (i.e., (0,0)) is used as upper two bits of each of the resultant 3-bit data and is combined with each of the '1' and '0' data of the resultant 3-bit data. The output data words from the shift register are converted by a logic circuit to the corresponding code words in one-to-one correspondence. Each code word has a bit number twice that of the input data word. If a bit array (1,0,1) is included in the code word bit stream thus obtained, this bit array is further converted to (0,0,1).