Mobile communication terminal

• US 20050020285A1
• Filed: 05/27/2004
• Published: 01/27/2005
• Est. Priority Date: 11/30/2001
• Status: Abandoned Application

• Current Assignee: KDDI Corporation, Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: KDDI Corporation, Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Sakuma, Takeshi, Kozuki, Katsuhiro
• Application Number:
  US10/854,790
• Publication Number:
  US 20050020285A1
• Time in Patent Office: Days
• US Class Current: 455/456.600
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/725 operating on a secure reference time value
• CPC Class Codes: G06F 2221/2137 Time limited access, e.g. to a computer or data
• CPC Class Codes: H04M 1/0256 wherein the modules are operable in the detached state, e.g. one module for the user interface and one module for the transceiver
• CPC Class Codes: H04M 1/72403 with means for local support of applications that increase the functionality
• CPC Class Codes: H04M 1/72442 for playing music files

Abstract

A CDMA mobile communication terminal MS receives system time data, as standard time information, the system time data being transmitted from a base station BS via a sync-channel. When reproducing contents, a reproduction expiration time contained in the contents is compared with the received standard time information, thereby detecting whether or not the contents can be reproduced. If it is detected that the contents may be reproduced, reproduction of the contents is permitted, whereas if it is detected that the contents should not be reproduced, reproduction of the contents is inhibited.

Claims

1. A mobile communication terminal including a function for reproduction of contents that contain a reproduction expiration time, comprising:

means for acquiring a standard time from an external device;

means for comparing the standard time, which is acquired by the acquiring means, with the reproduction expiration time of the contents;

means for detecting whether or not the standard time has exceeded the reproduction expiration time of the contents; and

means for enabling reproduction of the contents if the detecting means detects that the standard time has not exceeded the reproduction expiration time of the contents.

2. A mobile communication terminal according to claim 1, wherein if the mobile communication terminal has a radio communication function used to connect the mobile communication terminal to a base station for a mobile communication system which employs a CDMA (Code Division Multiple Access) system, the acquiring means receives system time data, which is transmitted from the base station via a control channel, using the radio communication function.

3. A mobile communication terminal according to claim 1, wherein if the mobile communication terminal has a GPS (Global Positioning System) receiving function, the acquiring means receives system time data, which is transmitted from a navigational satellite, using the GPS receiving function.

4. A mobile communication terminal including a function for reproduction of contents that contain a reproduction expiration time, comprising:

means for acquiring a standard time from an external device;

a comparator which compares the standard time, which is acquired by the acquiring means, with the reproduction expiration time of the contents;

a detector which detects whether or not the standard time has exceeded the reproduction expiration time of the contents; and

a reproduction controller which enables reproduction of the contents if the detector detects that the standard time has not exceeded the reproduction expiration time of the contents.