Mobile terminal, contents delivery system, and contents reproduction program

• US 20070006317A1
• Filed: 06/27/2006
• Published: 01/04/2007
• Est. Priority Date: 07/04/2005
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications Japan Incorporated (Sony Group Corp.)
• Inventors: Asami, Satoshi, Kokubo, Masashi
• Granted Patent: US 8,078,746 B2
• Time in Patent Office: Days
• US Class Current: 726/26
• CPC Class Codes: H04L 12/6418 Hybrid transport

Abstract

Low bit rate contents data as pre-data corresponding to a series of stream data are preliminarily stored in a mobile phone. In order to reproduce certain contents, a transmission request of high bit rate contents data block having the same contents as those of the low bit rate contents data block is transmitted to the delivery source indicated by the transfer source information added to the pre-data upon reproduction thereof. If the high bit rate contents data block is received from the delivery source, the high bit rate contents data block is reproduced. Meanwhile, if the high bit rate contents data block is unreceived from the delivery source, the low bit rate contents data block having the same contents as those of the high bit rate contents data block is detected from the pre-data so as to be reproduced in place thereof.

Claims

1. A mobile terminal unit comprising:

a memory unit that stores low bit rate contents data to which a delivery source information indicating a delivery source of high bit rate contents data with respect to predetermined contents is added, the low bit rate contents data containing contents corresponding to the predetermined contents of the high bit rate contents data;

a delivery source detection unit that detects the delivery source of the high bit rate contents data based on the delivery source information added to the low bit rate contents data stored in the memory unit for reproducing the predetermined contents;

a receiver unit that receives the high bit rate contents data from the delivery source detected by the delivery source detection unit for reproducing the predetermined contents;

a reception state detection unit that detects a reception of the high bit rate contents data performed by the receiver unit; and

a reproducing unit that reproduces the high bit rate contents data received by the receiver unit while the reception state detection unit detects the reception of the high bit rate contents data performed by the receiver unit, and reproduces the low bit rate contents data corresponding to the high bit rate contents data that have been unreceived from the low bit rate contents data stored in the memory unit while the reception state detection unit detects an unreceived state of the receiver unit with respect to the high bit rate contents data.

2. The mobile terminal unit according to claim 1, wherein:

each of the low bit rate contents data and the high bit rate contents data includes a plurality of contents data blocks obtained by dividing predetermined contents data; and

a block number of the low bit rate contents data block is identical to that of the high bit rate contents data block if the low bit rate contents data block contains the same contents data as those of the high bit rate contents data block.

3. The mobile terminal unit according to claim 2, wherein:

the memory unit stores the high bit rate contents data block received by the receiver unit; and

a deletion unit that deletes the high bit rate contents data block stored in the memory unit when reproduction of the predetermined contents by the reproduction unit is finished.

4. A contents delivery system comprising a mobile terminal unit that includes:

a contents delivery unit having

a memory unit that stores high bit rate contents data with respect to predetermined contents, and

a delivery unit that delivers the high bit rate contents data that have been read from the memory unit in response to a delivery request of the predetermined contents;

a memory unit that stores the low bit rate contents data with respect to the predetermined contents, to which delivery source information indicating that a delivery source of the high bit rate contents data with respect to the predetermined contents is the contents delivery unit is added;

a delivery source detection unit that detects the delivery source of the high bit rate contents data based on the delivery source information added to the low bit rate contents data stored in the memory unit for reproducing the predetermined contents;

a receiver unit that receives the high bit rate contents data from the contents delivery unit as the delivery source detected by the delivery source detection unit for reproducing the predetermined contents;

a receiver state detection unit that detects a reception of the high bit rate contents data performed by the receiver unit; and

a reproducing unit that reproduces the high bit rate contents data received by the receiver unit while the reception state detection unit detects a reception of the high bit rate contents data performed by the receiver unit, and reproduces the low bit rate contents data corresponding to the high bit rate contents data that have been unreceived from the low bit rate contents data stored in the memory unit while the reception state detection unit detects an unreceived state of the receiver unit with respect to the high bit rate contents data.

5. The contents delivery system according to claim 4, wherein:

each of the low bit rate contents data and the high bit rate contents data includes a plurality of contents data blocks obtained by dividing predetermined contents data; and

a block number of the low bit rate contents data block is identical to that of the high bit rate contents data block if the low bit rate contents data block contains the same contents data as those of the high bit rate contents data block.

6. A contents reproduction program that allows a computer to function as:

a delivery source detection controller that controls a delivery source detection unit to detect a delivery source of high bit rate contents data with respect to predetermined contents to be reproduced from a memory unit which stores low bit rate contents data with respect to the predetermined contents to which delivery source information indicating the delivery source of the high bit rate contents data with respect to the predetermined contents is added based on the delivery source information added to the low bit rate contents data;

a receiver controller that controls a receiver unit to receive the high bit rate contents data from the delivery source detected by the delivery source detection unit for reproducing the predetermined contents; and

a reproducing controller that controls a reproduction unit to reproduce the high bit rate contents data received by the receiver unit while a reception state detection unit detects a reception of the high bit rate contents data, and reproduces the low bit rate contents data corresponding to the high bit rate contents data that have been unreceived from the low bit rate contents data stored in the memory unit while the reception state detection unit detects an unreceived state of the receiver unit with respect to the high bit rate contents data.