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:
Jun. 06, 1995
Filed:
Dec. 08, 1992
Yoshiharu Kobayashi, Kadoma, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a digital modulator circuit for modulating a fixed-length code into a variable-length code and a digital demodulator for demodulating a variable-length code into a fixed-length code in a parallel data form, pre-modulation and pre-demodulation data is input to a logic circuit in synchronization with a pulse input, while a remainder of the fixed-length or variable-length code digital parallel input data taking place in modulating or demodulating process is fed back as an input to the logic circuit via a flip-flop to modulate or demodulate the data together with pre-modulation or pre-demodulation parallel data input at the next input pulse in a parallel data form. A post-modulation or post-demodulation data as well as a modulation or demodulation bit number output from the logic circuit are input to the buffer circuit to output post-modulation or post-demodulation data of which bits have been all modulated or demodulated.