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:
Nov. 06, 2012
Filed:
Nov. 25, 2008
Takehiko Yamakawa, Osaka, JP;
Toshiyuki Okajima, Shiga, JP;
Hiroshi Nakatsuka, Osaka, JP;
Keiji Onishi, Osaka, JP;
Takehiko Yamakawa, Osaka, JP;
Toshiyuki Okajima, Shiga, JP;
Hiroshi Nakatsuka, Osaka, JP;
Keiji Onishi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A digital television broadcast receiving section () of a mobile telephone terminal includes an antenna (), a notch filter (), a low-pass filter (LPF) (), a low noise amplifier (LNA) (), a receiving IC (), a control section (), and an input section (). A passband for digital television broadcast is divided into several parts. The control section () switches a characteristic of each of the notch filter () and the LPF () so as to combine filters appropriate for a low-band channel or a high-band channel. Thus, frequencies in a mobile telephone transmission frequency band of the mobile telephone terminal, and frequencies in a band of other systems, the frequencies in these band being interfering waves, are largely attenuated, and at the same time, frequencies in the passband which is a frequency band for digital television broadcast are allowed to pass with low loss.