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:
Aug. 25, 1998
Filed:
Apr. 18, 1996
Satoru Umezawa, Shizuoka-ken, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A management apparatus stores a use start time and a use period of each of karaoke apparatuses. When the remaining time of any one of the karaoke apparatuses is 10 minutes or less, time limit information message is transmitted to the karaoke apparatus. The karaoke apparatus displays the time limit information message on its monitor so as to notify the user of the information. At the same time, the user in allowed to input the extension of the use period though a commander. If the input of the use period extension is performed, the karaoke apparatus transmits an extension requesting message to the management apparatus In response to the message, the management apparatus updates the data of the use period.