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:
Sep. 30, 2003
Filed:
Dec. 09, 1999
Takashi Tomida, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
A shortwave radio-receiver shows an improved reception sensitivity that can be used in a highly convenient way. The receiver is adapted for the superheterodyne system and the PLL synthesizer system and includes a front end circuit A for converting the received shortwave signal into an intermediate frequency signal. It also includes a formation circuit for forming a tuning voltage VMB to be applied to the variable capacity diode of the antenna module and a jack J . When the antenna module is in use, the formation circuit is controlled in response to the reception frequency of the front end circuit A so as to modify the tuning voltage VMB and make the latter correspond to the reception band of the received shortwave broadcast to be received. The tuning voltage VMB is applied from the jack J to the variable capacity diode and, at the same time, the received signal is fed to the front end circuit A.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile