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. 02, 2004
Filed:
May. 06, 2002
Souhei Tanaka, Kanagawa, JP;
Masafumi Wataya, Kanagawa, JP;
Noriyuki Suzuki, Tokyo, JP;
Akira Kuronuma, Tokyo, JP;
Toru Nakayama, Kanagawa, JP;
Takuji Katsu, Kanagawa, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
There is provided an output control circuit provided in an integrated circuit that enables any arbitrary internal signal to be specified and output from any output terminal, and hence enable the monitoring of a large number of internal signals even if only a small number of output terminals are provided. A plurality of external output terminals output a plurality of signals existing in the integrated circuit. A plurality of signal output circuits are provided, to which the plurality of internal signals are mutually input. Each of the signal output circuits comprises a signal group select circuit that selects a predetermined signal group from the plurality of internal signals, a logic circuit that carries out logical operations on the selected signal group, and an external output circuit that outputs signals resulting from the logical operations via one of the external output terminals.