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:
Jul. 10, 1984
Filed:
Mar. 15, 1982
Osamu Yumoto, Kokubunji, JP;
Toshiro Suzuki, Tama, JP;
Hiroshi Takatori, Kokubunji, JP;
Yoshitaka Takasaki, Tokorozawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A small-sized LSI variable equalizer is provided for accurately equalizing waveforms of signals transmitted via transmission lines of different distances. Variable equalizer units capable of stepwise changing the equalizing characteristics thereof are connected in series with each other with the variable equalizer units having variable step widths different from each other. An output signal of the variable equalizer units is compared with a reference signal to convert the comparison output signal to a digital signal which includes an upper order bits and lower order bits, whereby one of the equalizer units which has a wide variable step width is controlled by the upper order bits and the other of the equalizer units which has a narrow variable step width is controlled by the lower order bits.