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. 02, 2013
Filed:
Oct. 27, 2009
Soon DO Kim, Seoul, KR;
Soon Do Kim, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus and method for automatically switching the operation mode of a Universal Serial Bus (USB) switching circuit in a portable terminal are provided. If an external device is connected to a USB interface unit, a signal is detected from the USB interface unit. The type of external device is identified by the detected signal. If the identified external device is a USB communication device, a communication mode is activated and a signal path is established between an internal module and the USB communication device during the communication mode. A determination is made as to whether an internal event occurs in the portable terminal and an external event occurs in the USB communication device, during the communication mode. The mode of the USB switching circuit is switched to a sleep mode if the internal and external events have not occurred.