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Information transmission and terminal, digita broadcasting, output time calculating apparatus and method

A technology for outputting time and information terminals, which is applied in broadcasting, pulse-modulated TV signal transmission, broadcasting devices, etc., and can solve the problems that the time reference cannot be restored, the time cannot be set, and the time information is lost.

Inactive Publication Date: 2008-09-24
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, when data is transmitted at a speed other than real time, the time information is lost, so the time base cannot be recovered
For this reason, there is a problem here: the time cannot be set based on the PCR (Program Reference Clock) placed in the TS packet to reproduce the program

Method used

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  • Information transmission and terminal, digita broadcasting, output time calculating apparatus and method
  • Information transmission and terminal, digita broadcasting, output time calculating apparatus and method
  • Information transmission and terminal, digita broadcasting, output time calculating apparatus and method

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Embodiment Construction

[0095] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The present invention can be applied in a system that transmits data on content by broadcasting using a digital BS. FIG. 1 shows the overall structure of such a system for transmitting data related to content by broadcasting using a digital BS.

[0096] In FIG. 1, reference numeral 1 denotes a broadcasting station for digital BS (broadcasting satellite) broadcasting, reference numeral 2 denotes an artificial satellite for digital BS broadcasting, and reference numeral 3 denotes a user's receiving terminal.

[0097] For example, in digital BS broadcasting, both video data and audio data are transmitted in MPEG2 (Moving Picture Experts Group)-TS (Transport Stream) by using, for example, 12 GHz (frequency of 11.7 GHz to 12 GHz). Video data is compressed based on MPEG2, and audio data is compressed based on MPEG2-ACC (Advanced Audio Coding). For example, a v...

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Abstract

It is an object to deliver contents in a different time from a real time through a digital artificial satellite and reproduce a program at a correct time, thereby transmitting information about contents for a long time by utilizing a limited time or transmitting information about contents in a small band. There is prepared a dummy packet including an adaptation field having the value of a dummy PCR for restoring a real time and time ratio information of a transfer time and the real time. During receipt, time information during output is obtained from the dummy PCR and the time ratio information. The time information during the output is added as a time stamp to a TS packet and is stored in a storage device such as a hard disk drive. During reproduction, data are read from the storage device by referring to the time stamp added during the recording. Consequently, the information about the contents transmitted in a different time base from the real time can be reproduced in a correct time base.

Description

technical field [0001] The present invention relates to an information transmission device and method, an information terminal device and an information terminal receiving method, a digital broadcast receiving device and method, and an output time calculation device and method, which are suitable for a A system that transmits data on content using a blank band of a transponder generated by, for example, completion of general digital BS (Broadcasting Satellite) broadcasting. Background technique [0002] In digital BS broadcasting, programs whose programs include digital video data, digital audio data, and other information are broadcast in MPEG (Moving Picture Experts Group) 2-TS (Transport Stream) format. In the MPEG2-TS mode, programs of multiple channels can be multiplexed onto one carrier and sent out. For example, eight transponders having a transmission band of 30 Mbps are installed on one artificial satellite for digital BS broadcasting (BS-4 successor artificial sat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04H20/00H04N7/20H04H40/90H04N5/00H04N7/24H04N7/52
CPCH04N21/4334H04N21/4344H04N21/4331H04H40/90H04N21/23614H04N21/4348H04N21/4325H04N21/435H04N21/4305H04N21/235H04N7/20
Inventor 森永刚男汤泽启二加贺美笃山本严
Owner SONY CORP
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