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:
Jun. 07, 2005
Filed:
Dec. 21, 2000
Katsuyuki Matsumoto, Hirakata, JP;
Masanao Yoshida, Osaka, JP;
Katsuyuki Matsumoto, Hirakata, JP;
Masanao Yoshida, Osaka, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Sanyo Technosound Co., Ltd., Daito, JP;
Abstract
A portable electronic device according to the invention comprises a USB connector, a USB controllerfor executing predetermined data communication processing attendant on data communication with a personal computerconnected to the USB connector, and a main CPUfor executing device operation processing for the usual operation of the device, and is adapted to receive a power supply from the personal computeror an external power sourceas connected to the USB connector. Discriminating between the sources of supply of power, the main CPUcauses the USB controllerto execute the predetermined data communication processing while power is supplied from the personal computer, or executes the usual device operation processing while power is supplied from the external power source. This assures more rapid and simplified processing even when the USB connector is used also as a connector for the external power source.