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Broadcast system, and its distribution device and terminal device

A distribution device and terminal device technology, applied in broadcasting devices, broadcasting-related systems, specific information broadcasting systems, etc., can solve problems such as lack of quality, information transmission frequency band limitation, etc.

Active Publication Date: 2010-09-29
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of using a wired digital network, in particular, the information transmission frequency band of the user accommodation part is limited, so when the broadcast signal is digitized and transmitted as it is, there is a problem that sufficient quality cannot be achieved, Or not be able to freely watch and listen to multiple channels like broadcast waves

Method used

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  • Broadcast system, and its distribution device and terminal device
  • Broadcast system, and its distribution device and terminal device
  • Broadcast system, and its distribution device and terminal device

Examples

Experimental program
Comparison scheme
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no. 1 Embodiment approach

[0025] figure 1 It is a block diagram showing the configuration of the broadcasting system according to the first embodiment of the present invention. This system is configured by connecting the distribution device 10 and the terminal device 20 via the IP network 106 .

[0026] The distribution device 10 receives digital broadcast waves through the antenna 101 by the broadcast wave receiving unit 102 described above. The received digital broadcast signal is supplied to the broadcast signal separation unit 103, and is separated into program content composed of video, audio, data, etc., and program-related information other than the program content. The program-related information is information related to program content, such as an electronic program guide (EPG). figure 2 In D1, an example of a broadcast signal received by the broadcast wave receiving unit 102 is shown. The broadcast signal is multiplexed with video, audio, data, program-related information, and invalid i...

no. 2 Embodiment approach

[0042] The broadcast system according to the second embodiment of the present invention receives a plurality of broadcast waves (channels), separates program contents from the received broadcast signals, multiplexes program-related information of the separated channels, and sent to the IP network.

[0043] image 3 It is a block diagram showing the configuration of the transmission side of the broadcast system according to the second embodiment of the present invention. Moreover, to and above figure 1 The same parts are marked with the same symbols, and their detailed descriptions are omitted.

[0044] The distribution device 10A has a distribution device 200 for receiving channel A, a distribution device 201 for receiving channel B, a distribution device 200 for receiving channel distribution unit C, and a distribution device 201 for receiving channel distribution unit D. Furthermore, in the present embodiment, the distribution device 10A is configured to receive four cha...

no. 3 Embodiment approach

[0050] In the third embodiment of the present invention, program-related information is managed by a distribution device, and only updated program-related information is distributed to terminal devices.

[0051] Figure 4 It is a block diagram showing the configuration of the broadcasting system according to the third embodiment of the present invention. Also, for and above figure 1 The same parts are marked with the same symbols, and their detailed descriptions are omitted.

[0052] The distribution device 10B includes, in addition to the structure of the distribution device 10 , a program-related information update determination unit 301 , a program-related information storage 302 , and a program-related information response unit 303 . The program-related information separated from the broadcast signal by the broadcast signal separation unit 103 is supplied to the program-related information update determination unit 301 .

[0053] The broadcast signal separation unit 10...

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Abstract

A broadcast signal received by a broadcast signal reception unit is separated into program contents and program information by a broadcast signal separation unit. The separated program contents is converted into Internet Protocol (IP) packets by a contents transmission unit then distributed to an IP network. A program information transmission unit converts the separated program information into the IP packets then distributes the IP packets by setting an IP connection differing from that of the transmission unit. A terminal device receives the program contents by a contents reception unit to supply it to a program contents reproduction unit. The program information received by a program information reception unit is stored in a program information memory and output to a display in response to an output request.

Description

technical field [0001] The present invention relates to a broadcast system for distributing digital broadcast signals through an IP (Internet Protocol) network, a distribution device, and a terminal device. Background technique [0002] Digital broadcasting including terrestrial digital broadcasting, like analog broadcasting, has blind spots where broadcast waves cannot reach. As a solution to this, it is necessary to transmit broadcasting signals not by radio waves but by wire. [0003] In digital broadcasting, all transmitted information is digitized, and video information, audio information, data information, and program-related information constituting a broadcast signal are multiplexed and transmitted as digital signals. Therefore, as a countermeasure against broadcast wave blind spots, existing digital networks can be used to transmit broadcast signals as digital signals and distribute them to listeners in blind spots. [0004] Therefore, there has been proposed a re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/08H04N7/52H04L29/06H04B1/16H04H20/02H04H20/28H04H60/27H04H60/72H04H60/82H04N7/173H04N21/442H04N21/658
Inventor 大崎善朗栗原伸一和田素直大屋靖男
Owner KK TOSHIBA