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Receiver

A technology of a receiving device and a data receiving device, which is applied in the directions of analog security/charging system, television, simultaneous/sequential multi-TV signal transmission, etc., can solve problems such as services that users feel very satisfied with

Inactive Publication Date: 2004-05-19
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the contrary, if the switching causes content interruption or the switching takes time, it cannot be said that it is a service that makes users feel very satisfied.

Method used

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Effect test

no. 1 Embodiment

[0029] First, the first embodiment of the present invention will be described. FIG. 1 is a diagram showing the configuration of a television receiver 100 applicable to the present invention.

[0030] In FIG. 1 , a signal received by an antenna is input to a tuner unit 101 . The tuner unit 101 performs processing such as decoding and error correction on the input signal, and generates digital data in what is called a transport stream format. Also, the generated transport stream (TS) data is output to the descrambler 102 . When TS data scrambled for viewing restriction is input from the tuner 101, the descrambler 102 performs descrambling based on the key information for descrambling contained in the TS data and the key information output by the IC card control unit 117. Descramble and output the result to the demultiplexer 103.

[0031] The IC card control section 117 includes an IC card for storing user subscription information and key information for decoding descrambling ...

no. 2 Embodiment

[0074] The second embodiment of the present invention has a different feature from the first embodiment regarding media library switching. Regarding the second embodiment, only the points different from the first embodiment will be described below. The same structures and operations as those of the first embodiment are denoted by the same symbols as those described in the first embodiment.

[0075] Fig. 12 is a block diagram showing the composition of a television receiver according to a second embodiment of the present invention. The difference from the first embodiment is that it has a stream flag 123 and a stream reception detection unit 124 .

[0076] When the CPU 118 receives a request to change the decoder 104 through the remote controller 116 and the stream processing unit 121 to switch the media library of the decoder 104, the stream flag 123 is simultaneously turned on / off. When the CPU 118 changes the media library of this decoder to stream decoding, the stream fla...

Embodiment 1

[0091] A receiving device has: a communication data receiving device that receives communication data from an external device through the Internet; a broadcasting data receiving device that receives broadcast data sent by a broadcasting station through a broadcasting network; a decoder for decoding the communication data received by the communication data receiving device and the broadcast data received by the broadcast data receiving device; and switching means for switching the decoding method performed by the decoder.

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PUM

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Abstract

In order to switch the transmission medium between the Internet and broadcast waves, reception / playback of communication data received via first media, such as via the Internet from an external device, and broadcast data received via second media, such as via a broadcast network from a broadcast station, is switched.

Description

technical field [0001] The present invention relates to a receiving device, which is a receiving device that can change the display content at any time in the TV program received by a variety of different media. A receiving device that can provide commercial news, etc. to all viewers at any time and seamlessly switch between streaming programs provided by TV broadcasting stations. Background technique [0002] With the advancement of technologies such as ADSL, cable TV, and optical fiber, the so-called broadband of high-speed Internet access services has begun to spread rapidly. These broadband can realize communication at a speed higher than the current 512Kbps to several Mbps. [0003] Internet access such as dial-up Internet access in the past analog telephone line can only reach a communication speed of 28.8 to 56Kbps at best. Even for ISDN (Integrated Services Digital Network) in which all communication data is transmitted in digital form, the general service is 64 kb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/08G06F13/00H04N5/44H04N5/445H04N5/45H04N5/76H04N5/765H04N5/781H04N7/16H04N9/804
CPCH04N5/781H04N7/16H04N21/4622H04N5/4401H04N5/44543H04N21/812H04N9/8042H04N5/765H04N21/6547H04N21/482H04N21/4263H04N5/45H04N21/44016H04N5/76H04N21/426H04N21/47H04N7/08
Inventor 福田哲森重树宫本胜弘荒谷俊太郎
Owner CANON KK
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