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:
Oct. 26, 2004
Filed:
Apr. 11, 2003
Hitachi, Ltd., Tokyo, JP;
Abstract
In a circuit for converting an input signal Data of high frequency to an output signal Data of low frequency, a signal of the frequency band (for example, 10 GHz to 2.5 GHz) which can be processed only with a bipolar ECL circuit is processed with a bipolar ECL circuit. After the frequency of signal up to the maximum frequency which can be processed with a CMOS circuit is lowered, the signal is inputted to the CMOS circuit via a level conversion circuit in order to lower the frequency (for example, 2.5 GHz to 1.25 GHz). Thereby, power consumption of the semiconductor integrated circuit device, particularly the device including the Bi-CMOS circuit can be lowered while high-seed processing characteristic in the signal process of the circuit is maintained.