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:
Mar. 31, 2009
Filed:
Aug. 02, 2005
Yuri Kuroda, Tokyo, JP;
Hiroshi Yoshimachi, Tokyo, JP;
Yuri Kuroda, Tokyo, JP;
Hiroshi Yoshimachi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A PTT communication system includes a plurality of terminals having respective PTT buttons, a management server for managing advertisements or contents, and a PTT communication server for controlling a token for PTT communications. When the PTT button of either one of the terminals is pressed, the PTT communication server assigns a token to the terminal with the pressed PTT button, and sends communication data from the terminal with the pressed PTT button to another terminal. When the PTT button of any one of the terminals is not pressed, the PTT communication server assigns a token to the management server which is equipped with no PTT button, and distributes advertisements or contents selected by the management server to which the token is assigned to the terminals.