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:
Jan. 11, 2011
Filed:
Feb. 09, 2009
Keisuke Fujishiro, Chuo-ku, JP;
Hideaki Kato, Kodaira, JP;
Keisuke Fujishiro, Chuo-ku, JP;
Hideaki Kato, Kodaira, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
A semiconductor device has a transmission control circuit comprising a signal transmission circuit, an output control circuit, a replica circuit and a detection circuit. The single transmission circuit receives a predetermined signal in synchronization with a first control signal, and transmits and outputs the signal through a signal bus in synchronization with a second control signal. The output control circuit supplies the second control signal and controls an output timing thereof. The replica circuit transmits and outputs a replica signal (having level shifted in response to the input timing of the predetermined signal) through a replica signal bus having the same transmission characteristics as the signal bus. The detection circuit detects shifting of the replica signal and supplies a feedback signal to the output control circuit whose output timing is controlled in accordance with the shifting timing of the replica signal based on the feedback signal.