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. 24, 2012
Filed:
Jun. 11, 2007
Takuya Nagai, Nagoya, JP;
Takuya Nagai, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
Radio-frequency tag communication system and radio-frequency tag communication device, which permit highly efficient coordinated operations of the communication devices while preventing overlapping of communication. The communication system includes a positional-relationship determining portion configured to determine relative positions of the plurality of radio-frequency tag communication devices, and a transmission control portion configured to control transmission of the transmitted signal from each of the plurality of radio-frequency tag communication devices, according to a result of determination of the relative positions by the positional-relationship determining portion, so that a sufficiently long time is provided for the mutually adjacent communication devices to transmit the transmitted signals. Namely, the present invention provides a radio-frequency tag communication system wherein the radio-frequency tag communication devices are operable in a coordinated fashion with high efficiency, while preventing overlapping of communication.