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:
Jul. 13, 2004
Filed:
Apr. 03, 2001
Naohiro Matsushita, Mishima, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
An electronic shelf label (ESL) transmits a negative response to a radio relay station by means of weak radio waves if it failed to normally receive price information. On the other hand, the ESL transmits no response if it failed to normally receive both ID information and price information. The radio relay station transmits to a radio communication base station ID information of the ESL which transmitted no response and ID information of the ESL which transmitted the negative response. The radio communication base station transfers the received ID information to an electronic shelf label (ESL) server. The ESL server re-transmits via the radio communication base station information to the ESL which transmitted no response and the ESL which transmitted the negative response.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile