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:
Mar. 13, 2007
Filed:
Oct. 05, 2001
Hirotsugu Kawada, Sakai, JP;
Yuji Mizuguchi, Hirakata, JP;
Takahisa Sakai, Amagasaki, JP;
Noboru Katta, Itami, JP;
Toshihiko Kurosaki, Kobe, JP;
Hirotsugu Kawada, Sakai, JP;
Yuji Mizuguchi, Hirakata, JP;
Takahisa Sakai, Amagasaki, JP;
Noboru Katta, Itami, JP;
Toshihiko Kurosaki, Kobe, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A digital data transmission apparatus includes a transmitting end () that includes: a binary/quadrary conversion unit () for converting a data stream; a coding unit () for mapping the converted data to be coded; a digital filter (); a D/A conversion unit (); a low-pass filter () for eliminating a high-band signal; a differential driver () for inputting an analog signal that has passed through the low-pass filter into a twisted pair cable (), and a receiving end () that includes: a low-pass filter () for eliminating noises from both wires of the twisted pair cable; a receiver () for receiving the signals that have passed through the low-pass filter; an A/D conversion unit (); a digital filter (); an evaluation unit () for evaluating a signal level of a received signal; a decoding unit () for decoding the signal level into receipt data; and a synchronization unit () for generating a clock.