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:
May. 18, 1999
Filed:
Aug. 07, 1996
Takuya Ishida, Suwa, JP;
Kanji Aoki, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A data decoding circuit of the present invention can regenerate a bit synchronization signal from a data received by using a code such as a split-phase code and Manchester code in which a binary value can be detected through a transition of voltage at a central area of a bit cell and transform the received data into a serial binary data. The data decoding circuit includes an edge detection section for detecting a transition point in the received data; a pulse generating section for generating a phase comparing timing signal having a pulse width of substantially 1/(4.times.fs) when fs is a data transfer frequency and a received data regenerating signal having a pulse width of substantially 1(2.times.fs) in synchronism with an output of the edge detection means; a phase synchronization oscillation section synchronized in phase with the phase comparing timing signal for outputting a signal having a frequency n times the data transfer frequency fs; and a sampling section including means for generating the bit synchronization signal by dividing a frequency of a signal outputted from the phase synchronization oscillation means into 1/n, means for sampling the received data regenerating signal based on the bit synchronization signal and means for transforming sampled signal into a serial binary data.