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:
Jan. 22, 2013
Filed:
Dec. 11, 2009
Sang-min Han, Gyeonggi-do, KR;
Jong-sik Lim, Daejeon, KR;
Dal Ahn, Chungcheongnam-do, KR;
Won-sang Yoon, Seoul, KR;
Young-sik Kim, Seoul, KR;
Sang-Min Han, Gyeonggi-do, KR;
Jong-Sik Lim, Daejeon, KR;
Dal Ahn, Chungcheongnam-do, KR;
Won-Sang Yoon, Seoul, KR;
Young-Sik Kim, Seoul, KR;
Soonchunhyang University Industry Academy Cooperation Foundation, Chungcheongnam-do, KR;
Abstract
A system for performing a local wireless communication using a predetermined frequency band divided into a plurality of channels. The system includes a hub for scanning each channel to identify available one of the plurality of channels and transmitting data over the available channel. The system further includes a sensor set to start to operate when the sensor detects a signal within the predetermined frequency band. The sensor spectrum-senses the signal of the frequency band for each channel, and analyzes a header of packet data for each channel, and receives and processes the packet data if the signal is identified to have a designated code.