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:
Apr. 10, 2012
Filed:
Oct. 13, 2009
Akira Kato, Osaka-fu, JP;
Akira Kato, Osaka-fu, JP;
Abstract
To perform operation check self-diagnosis of a digital terrestrial television broadcasting reception function of a multifunctional mobile communication terminal in any place without requiring addition of a special additional circuit component, or the like. When performing operation check self-diagnosis of a DTV reception unit, a first transmission signal of a GSM transmission/reception circuitand a second transmission signal of a WLAN communication unitare mixed using the non-linear characteristic of the LNAof the DTV reception unitwhile using transmission outputs of the GSM transmission/reception circuitand WLAN communication unit. Due to the mixture, a difference signal having a frequency that is the difference between both the transmission signals in the reception frequency band of the DTV reception unitis generated. On the basis of the difference signal, operation check self-diagnosis of the DTV reception unitis performed.