JP2000358231A - Data transmission/reception system and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a data transmission/reception system to conduct retrial processing in response to a permissible quantity of a communication channel prepared by a reply information receiving device. SOLUTION: In the case of broadcasting image and audio data, a broadcast device 140 broadcasts the data together with retrial information in response to a permissible capacity of a communication channel between each television receiver and a reply information receiving device 150. Each television receiver displays received digital data. The reply information entered by an operator is transmitted to the reply information receiving device 150. Each television receiver retries transmission on the basis of received retrial information when no communication is set up with the reply information receiving device 150. Since this retrial information responds to the permissible capacity of the communication channel between each television receiver and the reply information receiving device 150, the transmission is retried depending on the permissible capacity of the communication channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transmission / reception system, and more particularly to a retry transmission.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 8-275140 discloses that in order to prevent concentration of transmission of response information to an interactive program, the transmission time is randomly delayed from the response operation time for each receiving terminal. An apparatus for responding to a program is disclosed. With such a device, even if response operations are concentrated on the broadcast at one time, the actual transmission time from the broadcast receiving side is delay-dispersed for each terminal. Therefore, puncturing of the telephone line between each receiving terminal and the center can be avoided.

However, when the transmission time of the response information is delayed as described above, there are the following problems. If the center is not connected to the telephone as a result of the delayed transmission, a situation occurs in which the response information is not actually transmitted to the center, despite the fact that the operator has recognized that he / she has made an offer for shopping. .

[0004] It is an object of the present invention to provide a data transmission / reception system or a method therefor which enables a response information receiving device to more reliably receive response information when response information is delayed and the above problem is solved. And

Another object of the present invention is to provide a data transmission / reception system or a method thereof capable of retrying according to an allowable amount of a communication line between each television receiver and a response information receiving device.

[0006]

SUMMARY OF THE INVENTION 1) In a data transmission / reception system according to the present invention, data is transmitted from a broadcasting station to a plurality of television receivers by broadcasting, and a response is sent from the television receiver to a response information receiving device via a communication line. A data transmission / reception system for transmitting information, wherein the broadcasting station includes:
When communication is not established between the television receivers and the response information receiving device, the television receiver transmits retry information including retry information for retry transmission. Therefore, even when the response information is delayed, the response information receiving device can more reliably receive the response information. Further, the retry transmission process in the television receiver can be controlled by data broadcast from a broadcasting station.

[0007] 2) In the data transmission / reception system according to the present invention, when the communication with the response information receiving device is not established, the television receiver retransmits the data with the response information receiving device for retry transmission. When data including trial information is received from the broadcasting station, the response information is retransmitted based on the retry information. Therefore, even when the response information is delayed, the response information receiving device can more reliably receive the response information. further,
The retry transmission process in the television receiver can be controlled by data broadcast from a broadcasting station.

[0008] 3) In the data transmission / reception system according to the present invention, the broadcasting device transmits retry information corresponding to an allowable amount of the communication line in the data, and the television receiver transmits the response information. If communication has not been established with the receiving device, the response information is retried and transmitted based on the received retry information. Therefore,
Even if the response information is delayed, the response information receiving device can more reliably receive the response information. Further, the broadcast device can control a retry transmission process according to an allowable amount of the communication line.

[0009] 4) In the television receiver or the data transmission / reception method according to the present invention, when communication with the response information receiving device is not established, based on the retry information received from the broadcasting device. Then, the response information is retried and transmitted to the response information receiving device. Therefore, even when the response information is delayed, the response information receiving device can more reliably receive the response information. Further, the retry transmission process can be controlled by data broadcast from a broadcasting station.

[0010] 5) In the data receiver according to the present invention, 1) receiving means for receiving data transmitted from a broadcasting device, 2) display data output for outputting display data based on the received data to a display means. Means, 3) means for transmitting response information via a communication line, based on the retry information included in the data, if the communication with the response information receiving device is not established. Communication means for retry transmission of the response information. Therefore, even when the response information is delayed, the response information receiving device can more reliably receive the response information. Further, the retry transmission process in the data receiver can be controlled by data broadcast from a broadcasting station.

6) A television receiver according to the present invention comprises: 1) receiving means for receiving data transmitted from a broadcasting device; 2) display means for displaying display data based on the received data; and 3) response information. Through a communication line, and when communication is not established with the response information receiving device, the response information is re-read based on the retry information given from the broadcasting device. Communication means for trial transmission is provided. Therefore, even when the response information is delayed, the response information receiving device can more reliably receive the response information. Further, the retry transmission process in the television receiver can be controlled by data broadcast from a broadcasting station.

7) The television receiver according to the present invention specifies the first scheduled transmission time with the response information receiving device by performing a random calculation based on the received delay information. Therefore, even if the broadcasting side broadcasts one piece of delay information, the receiving side can disperse the first scheduled transmission time.

8) The television receiver according to the present invention determines whether or not to perform retry transmission based on the transmission end time given from the broadcasting device. Therefore, retry transmission can be stopped based on the transmission end time.

9) The television receiver according to the present invention is provided with a detecting means for detecting a cause of failure of communication with the response information receiving device. in this way,
By detecting the cause of the communication failure, appropriate measures can be taken.

10) In the television receiver according to the present invention, the retry condition changing means changes the conditions for the next and subsequent retry transmissions based on the detected cause. Therefore, transmission can be performed under different retry conditions depending on the detected cause of communication failure.

11) In the television receiver according to the present invention, the retry condition changing means changes a set time width of the next and subsequent retry transmissions. Therefore, retry transmission can be performed within a different set time width depending on the detected communication failure cause.

12) In the television receiver according to the present invention, the retry condition changing means stops retry transmission. Therefore, the retry transmission can be stopped depending on the detected cause of the communication failure.

13) In the television receiver according to the present invention, notification data for notifying the notifying unit of the detected cause is generated. The cause of the communication failure can be notified to the operator based on the notification data.

14) In the television receiver according to the present invention, the remaining transmission time is calculated from the transmission end time provided from the broadcasting device, and the retry transmission condition is changed according to the remaining transmission time. . Therefore, it is possible to perform different retry transmissions according to the remaining transmittable time.

15) In the television receiver according to the present invention, notification data for notifying the result of communication with the response information receiving device is generated. Based on this notification data,
The communication result can be notified to the operator.

16) In the television receiver according to the present invention, a communication result is received from the response information receiving device, and notification data for notifying the communication result is generated. Therefore, notification data can be generated based on the response information stored in the response information receiving device.

17) In the television receiver according to the present invention, a communication history with the response information receiving device is stored, and notification data is generated. Therefore, notification data can be generated based on the communication history with the response information receiving device.

(18) In the television receiver according to the present invention, the response information to be delayed-transmitted is stored, and when a notification command is given from an operator, the response information is reported. Thereby, the operator can confirm the response information transmitted with delay.

19) In the television receiver according to the present invention, the editing means edits the response information when an editing command is given from the operator. This allows the operator
It is possible to confirm the response information of the delay transmission target and edit the response information into appropriate response information.

20) In the data receiver according to the present invention, when the communication with the response information receiving device is not established, the communication unit may transmit the retry information included in the received data. , And transmits the response information again. Therefore, even when the response information is delayed, the response information receiving device can more reliably receive the response information. Further, the retry transmission process in the data receiver can be controlled by broadcast data from the transmission side.

21) In the data receiver according to the present invention, when communication is not established with the response information receiving device, a retry for specifying a retry time based on the retry information is performed. The time specifying data is calculated, and when the retry time comes, the stored response information is transmitted again. Therefore, even if the response information is delayed,
The response information receiving device can more reliably receive the response information. Further, the retry transmission process in the data receiver can be controlled by broadcast data from the transmission side.

22) The data receiver according to the present invention specifies the first scheduled transmission time with the response information receiving device by performing a random calculation based on the received delay information.
Therefore, even if the broadcast side broadcasts one delay information,
The receiving side can disperse the first scheduled transmission time.

23) The data receiver according to the present invention determines whether or not to retry transmission based on the transmission end time provided from the broadcasting device. Therefore, retry transmission can be stopped based on the transmission end time.

24) The data receiver according to the present invention is provided with a detecting means for detecting a cause of a failure of communication with the response information receiving device. In this way, by detecting the cause of the communication failure, appropriate measures can be taken.

25) In the data receiver according to the present invention, data is transmitted by broadcasting from a broadcasting station to a plurality of data receivers, and response information is delayed by a communication line from the plurality of data receivers to a response information receiving device. A data transmission / reception system for transmitting, wherein the broadcast station transmits retry information included in the data, and the data receiver is configured to perform communication when the communication with the response information receiving device is not established. Retransmitted the response information based on the retry information, the response information receiving device, when receiving the response information from the data receiver, received the response information by a communication line different from the communication line This is notified to the operator of the data receiver. Therefore, when the response information is delayed, it is possible to confirm whether the response information has been transmitted to the response information receiving device. 26) In the data transmission / reception system according to the present invention, when the server receives the download request, the server transmits the download request to the computer that has transmitted the download request.
The computer transmits a download request delay transmission program, and the computer delay-transmits the download request to the server based on the download request delay transmission program. Therefore, the download request and the download process can be executed at different times. Thereby, it is possible to prevent download requests from being concentrated.

27) The server of the data transmission / reception system according to the present invention is a server connected to a plurality of computers, and when a download request is received from any one of the computers, the computer which has received the download request is sent to Instead of transmitting the data specified by the download request, a download request delay transmission program for delay-transmitting the download request is transmitted to the server. Therefore, the actual download processing to the computer can be shifted in time.

28) In the data transmission / reception system according to the present invention, 1) a broadcasting device for broadcasting data, and 2) a plurality of television receivers for receiving the data, wherein a display based on the received data is displayed and a response is made. A television receiver for transmitting information via a communication line, 3) a broadcast receiver comprising a response information receiving device connected to each of the television receivers via the communication line and receiving response information from the television receiver; The transmission probability is generated with the generation probability of generating the transmission time fluctuates with time included in the data and transmitted,
The television receiver determines a scheduled transmission time to be transmitted to the response information receiving device based on the received probability variation data. Therefore, when the response information is transmitted in a delayed manner in each television receiver, a retry transmission process can be performed according to the permissible amount of the communication line.

29) In a data transmission / reception system according to the present invention, data transmission / reception in which data is transmitted from a broadcasting station to a plurality of television receivers by broadcasting and response information is transmitted from the television receiver to a response information receiving device via a communication line. The system, when the television receiver receives, from the broadcast device, probability variation data in which a generation probability of generating a transmission time varies with time, the transmission reception time is transmitted to the response information receiving device. It is determined based on the obtained probability variation data. Therefore, when the response information is transmitted with delay, retry transmission processing can be performed according to the allowable amount of the communication line.

30) In the data receiver according to the present invention, when receiving, from the broadcasting device, probability variation data in which the generation probability of generating the transmission time varies with time,
Scheduled transmission time to be transmitted to the response information receiving device,
The decision is made based on the received probability variation data. Therefore, retry distributed transmission processing according to the allowable amount of the communication line becomes possible.

31) In the data receiver according to the present invention, when the transmission start possible time is received from the broadcast device, a random number is generated for the time until the transmission scheduled time using the received probability variation data. Determine the scheduled outgoing time. Therefore, retry distributed transmission processing according to the allowable amount of the communication line becomes possible.

32) In the data transmission / reception method according to the present invention, when data including retry information corresponding to the allowable amount of the communication line is received, if data using the communication line is not established, The response information is retried and transmitted based on the received retry information. Therefore, even when the response information is delayed, the response information can be transmitted more reliably. Further, retry transmission is performed according to the permissible amount of the communication line.

33) The data transmitting / receiving method according to the present invention is a data transmitting / receiving method for transmitting response information via a communication line when receiving broadcast data.
The data includes, in the data, probability variation data in which the generation probability of generating the transmission time varies with time, and the scheduled transmission time to be transmitted via the communication line is determined based on the received probability variation data. Is done. Therefore, the response information can be transmitted with delay according to the allowable amount of the communication line.

34) On a recording medium storing the program according to the present invention, the program performs the following processing, and if communication with the response information receiving device is not established, the program Based on the retry information received from the device, the response information is retried and transmitted to the response information receiving device. Therefore, even when the response information is delayed, the response information can be transmitted more reliably. Further, retry transmission is performed according to the permissible amount of the communication line.

35) In a recording medium storing a program according to the present invention, the program performs the following processing. 1) Probability variation data in which the generation probability of generating a transmission time from the broadcasting device varies with time. Is received, the scheduled transmission time to be transmitted to the response information receiving device is determined based on the received probability variation data.
Therefore, retry distributed transmission processing according to the allowable amount of the communication line becomes possible.

In the present invention, the term "recording medium on which a program is recorded" refers to a ROM, RA
M, a recording medium such as a flexible disk, a CD-ROM, a memory card, and a hard disk. In addition, the concept includes communication media such as a telephone line and a transport path. The concept includes not only a recording medium such as a hard disk connected to the CPU and in which the recorded program is directly executed, but also a recording medium such as a CD-ROM in which the program to be executed after being once installed on the hard disk or the like is recorded. is there. Furthermore, the programs referred to here include not only programs that can be directly executed, but also source-format programs, compressed programs, encrypted programs, and the like. Further, the navigation data in the embodiment is also included in the concept of the program.

The "television receiver" is a concept including not only a set-top box connected to a monitor but also a television receiver having a built-in monitor.

The "editing of the input response information" includes not only changing part or all of the actual data of the input response information but also deleting the response information.

The "response information" includes data itself input by the operator of the data receiver, data generated based on the input data of the operator of the data receiver, and further, based on the received data. Generated ones and automatically collected ones are also included.

[0044]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 1. Table of contents 1. Outline of satellite broadcasting system 1.1 Radio wave transmission state in satellite broadcasting 1.2 Configuration of transmitting device 1.3 Structure of transport stream 1.4 Configuration of receiving device 2. Bidirectional Transmission / reception system 1 2.1 Overview 2.2 Detailed description 2.3 Transmission data 2.4 Specific configuration and operation of receiver 2.5 Delayed transmission processing 2.6 Delayed transmission cause detection processing 2.7 Initial transmission Calculation of Scheduled Time 3. Other Embodiments A case in which the present invention is applied to satellite broadcasting will be described below. However, if it is a data broadcast, it can also be applied to a terrestrial broadcast, a cable broadcast such as a cable television, an Internet broadcast, and the like. Before describing the embodiments of the present invention, first, an outline of a satellite broadcasting system will be described.

1. Overview of Satellite Broadcasting System 1.1 State of Transmitting Radio Waves in Satellite Broadcasting FIG. 1 schematically shows the state of transmitting radio waves in satellite broadcasting. Radio waves from the ground station 2 are transmitted to the ground via the satellite broadcast 4. A plurality of transport streams TS1, TS2, TS3 are transmitted from the satellite broadcast 4. Each transport stream is distinguished by a frequency, a polarization plane, and the like.

The transport stream TS1 includes a plurality of services (corresponding to terrestrial broadcast channels) SV
11, SV12, SV13 and SV14 are packetized and multiplexed by time division. Similarly, the transport stream TS2 includes the services SV21 and SV2.
2, SV23 and SV24 are multiplexed, and the services SV31, SV32, SV
V33 and SV34 are multiplexed. In each transport stream, in addition to image data and audio data of each service, control data for indicating program information, control data for indicating the current time, control data necessary for packetization, and the like are also transmitted. I have.

Although only three transport streams are shown in FIG. 1, more transport streams are actually transmitted. Further, FIG.
In, for each transport stream, 4
Although one service is multiplexed, more services are actually multiplexed.

1.2 Configuration of Transmitting Apparatus FIG. 2 shows a configuration of a transmitting apparatus for generating and transmitting the above-described transport stream. Although only the transport stream TS1 is shown in the figure,
Other transport streams TS2 and TS3 are generated in the same manner.

Image / audio data ES of service SV11
11 is a multiplexing unit 1 which is compressed by the encoder E1.
0 is given. Similarly, the image / audio data ES12 of the service SV12 is compressed by the encoder E2 and provided to the multiplexing unit 10, and the image / audio data ES13 of the service SV13 is compressed by the encoder E3 and provided to the multiplexing unit 10, and the service The image / audio data ES14 of the SV 14 is compressed by the encoder E4 and provided to the multiplexing unit 10.

The control data generator 6 includes control data for multiplexing packets, control data for indicating program information,
It generates control data and the like indicating the current time. The control data for packet multiplexing is added to correctly identify the video / audio data of a plurality of services that have been packetized in a time division manner.

The multiplexing unit 10 includes control data, compressed image / audio data ES11, ES12, ES13, ES
14 is time-divided into fixed-length packets and output as a transport stream TS1.

The scrambler 12 scrambles the output packet using the scramble key provided from the scramble key control unit 16. The scrambled transport stream TS1 is modulated by the modulator 14 and broadcast to the viewer via the broadcast satellite 4.

Note that the scramble key used in the scrambler 12 is encrypted in the ECM generation unit 8 to be ECM (Entitlement Control Message) data. That is, ECM data in which a key for descrambling is further encrypted is generated. Multiplexer 10
Is packetized including this ECM data.

1.3 Structure of Transport Stream As shown in FIG. 3, the transport stream TS1 generated by the transmitting device of FIG.
1 video data ES (V) 1 and audio data ES (A)
1, video data ES (V) 2, audio data ES (A) 2 of service SV12, video data E of service SV13
S (V) 3, audio data ES (A) 3, service SV1
4 video data ES (V) 4 and audio data ES (A) 4
Are multiplexed.

Further, control data NIT, PAT, PMT1, PMT2, PMT3, P
MT4 is also multiplexed. With these control data,
Multiplexed services SV11, SV12, SV1
3. The video / audio data of the SV 14 can be separated.

Also, control data ECM1, ECM2, ECM3, ECM4 for the scramble key, control data EIT1, EIT2, EIT3, EIT indicating program information
4. Control data TDT indicating the current date and time are also multiplexed. Actually, many other control data are multiplexed (not shown).

The packetization is performed as shown by the vertical line 18a in FIG. That is, the control data NIT, PAT, P
MT, EIT, TDT, ECM, video data ES
(V), packetization is performed in the order of the audio data ES (A). When the packetization up to the audio data ES (A) 3 is completed, the packetization below the control data NIT is repeated again (see the vertical line 18b).

FIG. 4 shows the basic structure of packetized data. Both control data and video / audio data are packets having a data structure as shown in FIG. A packet ID (PID) is added to the head of the packetized data. The packet ID is a code uniquely assigned to each packet to identify each packet. The content data is packetized target data (control data,
Video / audio data, etc.).

FIG. 5 shows the data contents of control data PMT1 for packet multiplexing. PMT1 includes video data ES (V) 1 and audio data ES of service SV11.
(A) The packet ID of 1 and the packet ID of ECM1 for descrambling these are described. In PMT2, PMT3, and PMT4, similar packet IDs are described for the services SV12, SV13, and SV14, respectively.

As shown in FIG. 6, the PAT includes a packet ID of PMT1 corresponding to service SV11, a packet ID of PMT2 corresponding to service SV12, a packet ID of PMT3 corresponding to service SV13, and a PMT4 corresponding to service SV14. Is described.

As shown in FIG. 7, the NIT includes, for all transport streams TS1, TS2, and TS3, transmission characteristics such as their frequencies and polarization planes, and the services multiplexed on the transport streams. A list is described. As a result, it is possible to know which frequency a transport stream is multiplexed with a specific service.

1.4 Configuration of Receiving Apparatus FIG. 8 shows an outline of the receiving apparatus. The transport stream is selected by the tuner 22, the descrambler is descrambled by the descrambler 24, and the video / audio data ES relating to the desired service is separated by the transport decoder 26. The microprocessor (MPU) 28 transmits the acquired ECM to the IC card 3
0, and receives the scramble key restored by the IC card 30. The MPU 28 sets the scramble key in the descrambler 24. This makes it possible to descramble the video / audio data ES.

The MPU 28 sets the packet ID of the video / audio data ES of the desired service in the transport decoder 26. As a result, the transport decoder 26 transmits the video / audio data ES of the service.
Is output. When the packet ID of the control data is set in the transport decoder 26, the separated control data is provided to the MPU 28.

The operation when the command to switch to the service SV12 of the transport stream TS1 is given to the MPU 28 on the assumption that the service SV33 of the transport stream TS3 is currently received will be described below. First, the MPU 28 controls the transport decoder (that is, the packet I of the control data NIT).
D) and import the NIT. From the description of the NIT, it is known that the service SV12 desired to be received is multiplexed in the transport stream TS1 (see FIG. 7).

Next, the tuner 8 is controlled to receive the transport stream TS1. Further, it controls the transport decoder 26 to obtain PAT and PMT2, and obtains the video data ES of the desired service SV12.
(V) 2, the packet ID of the audio data ES (A) 2 and the packet ID of its ECM are obtained.

Next, these packet IDs are set in the transport decoder 26, and the desired service SV12
The video data ES (V) 2 and the audio data ES (A) 2 are output from the transport decoder 26. At the same time, the MPU 28 sends the ECM obtained from the transport decoder 26 to the IC card 30 to obtain a scramble key, and sets the scramble key in the descrambler 24. Thus, the descrambled video data ES
(V) 2, audio data ES (A) 2 can be obtained. Switching of the service to be received is performed as described above.

When an instruction to display a program schedule or program information is given to the MPU 28, the MPU 28 controls the transport decoder 26 to acquire the EIT.
Further, it controls to display program information and the like based on the acquired EIT.

2. Bidirectional Transmission / Reception System 1 A bidirectional transmission / reception system 1 according to an embodiment of the present invention will be described below.

2.1 Overview FIG. 9 shows an overall configuration of a bidirectional transmission / reception system 1 according to an embodiment of the present invention.

The broadcasting device 140 broadcasts digital data such as video and audio. At that time, the television receivers 160 _{1 to} 160 ₁
0n and retry information according to the allowable amount of the communication line between the response information receiving devices are included in the digital data and broadcast.

The television receivers 160 _{1 to} 160 n receive the digital data. Television receiver ₁₆₀ 1 to 1
60n performs display based on the received digital data. When the operator inputs the response information while viewing the displayed image, the television receivers 160 _{1 to} 160 n transmit the response information to the response information receiving device 150 via the communication line.

The response information receiving device is connectable to each of the television receivers 160 _{1 to} 160 n via a communication line, and receives response information from each of the television receivers.

Further, the television receivers 160 _{1 to} 160 n
Retransmits the response information based on the retry information received from the broadcast device 140 when the communication with the response information receiving device 150 is not established. Thus, even if responses from the television receivers 160 ₁ to 160 n to the response information receiving device 150 are concentrated, retry transmission is performed based on response information corresponding to the allowable amount of the communication line. Therefore, once the response information receiving device 150
Even when the connection cannot be established, the response information can be received more reliably. Further, the retry transmission process according to the permissible amount of the communication line can be controlled by the broadcasting of the broadcasting device 140. As a result, it is possible to avoid concentration of responses from the television receivers to the response information receiving device 150.

2.2 Detailed Description The configuration of the broadcasting device 140 is the same as that of the transmitting device of FIG. 2 except that navigation data, which will be described later, is also generated. The response information receiving device 150 includes a communication unit 151 and a control unit 1 as shown in FIG.
53, and a storage unit 155. The communication unit 151
Each television receiver 16 is connected via a telephone line which is a communication line.
0 ₁ can transmit and receive data to and from the ～160N.
The control unit 153 controls the communication unit 151 and manages received data. The storage unit 155 stores the response information and the like received by the communication unit 151.

[0075] with reference to FIG. 10, described television receiver 160 _1. The television receiver 160 ₁ includes the receiving unit 1
61, display data output means 163, input means 165, communication means 167, detection means 171, retry condition changing means 1
73, a storage unit 175, an editing unit 177, and a display unit 179.

The receiving means 161 is provided for the broadcasting device 1 shown in FIG.
The digital data transmitted from 40 is received. The display data output unit 163 outputs display data based on the received digital data to the display unit 179. The display unit 179 performs display based on the display data. The operator
Based on the display, response information is input to the input unit 165. The input response information is stored in the storage unit 175.

When communication with the response information receiving device 150 is not possible, the communication means 167 calculates retry time specifying data for specifying a retry time based on the retry information. Then, the response information stored in the storage unit 175 is retransmitted. That is, the response information is communicated via a communication line, and when communication is not established with the response information receiving device 150, the response information is re-established based on the retry information given from the broadcast device 140. Retry sending the information.

Thus, when the response information is transmitted with delay.
Even if a response is received, the response information receiving device 150
Information can be transmitted. Furthermore, the television receiver 1
60 ₁From the broadcasting device 140
It can be controlled by broadcasting digital data.

Further, the detecting means 171 detects the reason why communication with the response information receiving device 150 is not established. The retry condition changing unit 173 changes the conditions for the next and subsequent retry transmissions based on the detected cause.
This enables flexible retry transmission according to the cause of the failure.

The display data output means 163 outputs the input response information to the display means 179 when a read command is given from the operator. Upon receiving an editing command from the operator, the editing unit 177 edits the response information stored in the storage unit 175.

In the present embodiment, the cause of the communication failure is notified by displaying on the display means 179, so that the display data corresponds to the notification data.
However, the present invention is not limited to this, and this may be notified by another method, for example, by voice. In this case,
The voice data corresponds to the notification data.

Further, the result of communication with the response information receiving device may be reported. Thereby, the operator can know the response result by the delayed transmission.

The television receivers 160 _{2 to} 160 n are the same as the television receiver 160 ₁ .

The response information stored in the storage means is not limited to the input information, but may be generated by the response information generating means based on the received data received.

2.3 Regarding Transmission Data FIG. 11 shows a data structure of a transport stream transmitted from a transmission device in a broadcasting system having interactive properties. In FIG. 11, the video and audio elementary streams of services other than the service SV11 are omitted. Service SV
11 is the first video elementary stream ES
(V) 11, the second video elementary stream ES
(V) 12, the first elementary stream audio ES
(A) 11, 2nd elementary stream ES
(A) 12 is constituted. In this manner, the service SV11 differs from the data structure in FIG. 3 in that two types of video / audio ESs are included. Based on the navigation data NVT1 and NVT2, which are interactive control data, these two types of video / audio ESs are
Switching can be performed interactively according to the operation of the operator on the receiving side. Further, based on the navigation data NVT1 and NVT2, an additional display can be interactively changed according to the operation of the operator on the receiving side.

FIG. 12 shows the contents of PMT1 of service SV11. The control data PMT1 includes a packet I of each content (video, audio, navigation data).
D, a packet ID of ECM data for obtaining a key for descrambling the content is described. Furthermore, since there are a plurality of contents for video, audio, and navigation data, the one to be output first is described as entry content. This control data PM
The packet ID of T1 itself is “0x0011”.

FIG. 13 shows the contents of the control data PAT. The control data PAT includes the services SV11 and SV multiplexed on the transport stream TS1.
12, PMT packet I for SV13 and SV14
D is described. Thereby, it is possible to know that the packet ID of the service SV11 is “0x0011”. The packet ID of the control data PAT itself is fixedly set to “0x0000”.

FIGS. 14 and 15 show the contents described in the navigation data NVT1 and NVT2. The set of navigation data NVT1 and NVT2 having the same contents is repeatedly transmitted. As described later, the contents of the service can be switched interactively according to the operation of the operator by the navigation data NVT1 and NVT2.

[0089] 2.4 specific construction and operation diagram 16 of a receiver, showing a hardware configuration diagram in the case where the receiver 160 ₁ shown in FIG. 10 realized using a CPU. The receiver 160 ₁ has not only a function as a receiver of a normal satellite has a function of transmitting the response information input by an operator to the center. Such a function is realized by a program stored in the CPU 58 and the memory 60. Note that this program may be a program that functions alone, or may function based on an operating system (such as windows CE (trademark) of Microsoft Corporation).

The CPU 58 controls each unit according to the program recorded in the memory 60.

Here, it is assumed that a transport stream as shown in FIG. 11 has been transmitted. Also,
The service SV11 includes video data ES (V) 11, E
S (V) 12, audio data ES (A) 11, ES (A)
12, the video data ES (V) 11 and the audio data ES (A) 11 are contents of television shopping related to daily necessities, the video data ES (V) 12, and the audio data E.
It is assumed that S (A) 12 is the content of television shopping related to clothing.

The program of the reception process recorded in the memory 60 will be described with reference to the flowchart of FIG.

The operation in the case where the command to switch to the service SV11 of the transport stream TS1 is given to the CPU 58 on the assumption that the service SV13 of the transport stream TS1 is currently received will be described below. The command to the CPU 58 is given from an operation panel or an operation remote controller. The operation input unit 54 shown in FIG. 16 is a light receiving unit that receives a command from the operation panel or the operation remote controller.

First, the CPU 58 sets a PAT packet ID in a control data separation register (not shown) of the transport decoder (TS decoder) 50.
The packet ID of the PAT is fixedly set to “0x0000”. Thereby, the TS decoder 50 records the content of the separated PAT in the memory 60 (step S11). The PAT describes a list of services multiplexed on the currently received transport stream TS1 (see FIG. 13). Therefore, CP
U58 knows that the desired service SV11 is multiplexed on the currently received transport stream TS1. That is, the CPU 58 advances the process from step S12 to S18.

In step S18, the acquired PA
Based on T, the packet ID of the PMT of the desired service SV11 is obtained. Here, “0x0011” is acquired (see FIG. 13). Next, the CPU 58
The packet ID “0x0011” of the TS decoder 50
Is set in the control data separation register. Thus, the PMT 1 of the service SV11 can be separated and its contents can be acquired in the memory 60 (step S1).
9).

FIG. 12 shows the PMT 1 of the service SV11. The CPU 58 determines whether or not the service SV11 includes the navigation data NVT based on the PMT1 (that is, whether or not the service SV11 is an interactive service) (step S191). When the NMT is not included, the CPU 58 can know the packet ID “0x21” of the ECM data for obtaining the scramble key of the video and audio data based on the PMT1. Similarly, video and audio data ES (V)
1, ES (A) 1 packet ID “0x22” “0x2”
4 "(step S20).

The CPU 58 checks the packet ID “0” of the ECM.
x21 "is set in the control data separation register of the TS decoder 50, and the ECM is acquired. Furthermore, this EC
M is given to the IC card 56 to obtain the restored scramble key. The scramble key thus obtained is set in the descrambler 48 (step S2).
1). Thereby, the video data ES of the service SV11
(V) 1, the packet of the audio data ES (A) 1 is in a descrambling state.

Further, the CPU 58 determines that the packet ID “0x2” of the video and audio data ES (V) 1 and ES (A) 1.
2 ”“ 0x24 ”is set in an ES separation register (not shown) of the TS decoder 50 (step S22).
Thus, the TS decoder 50 outputs the separated video and audio data ES (V) 1 and ES (A) 1 to the AV decoder 52.

Upon receiving this, the AV decoder 52 expands (decompresses) the compressed data, performs D / A conversion, and generates a video composite signal. This signal is provided to the TV set 46 and output as video and audio.

On the other hand, when the service includes the navigation data as shown in FIG. 12 in step S191, the CPU 58 determines, based on the contents of PMT1, the video, audio, packet ID of the navigation data and the packet ID of the entry data. The packet ID of the ECM is recognized (step S192). Here, the video data ES
(V) 11 packet ID “0x0096”, audio data ES (A) 11 packet ID “0x0098”, navigation data NVT1 packet ID “0x00”
92 ”and the packet ID“ 0 ”of these ECM data
x0082 "is recognized.

The CPU 58 checks the ECM packet ID “0”.
“x0082” is set in the control data separation register of the TS decoder 50 to acquire ECM data. Further, the ECM data is given to the IC card 56, and the scramble key restored by the IC card 56 is obtained. The scramble key thus obtained is set in the descrambler 48 (step S193). Thereby, the video data ES (V) 11 of the service SV11,
ES (V) 12, audio data ES (A) 11, ES
(A) 12, navigation data NVT1, NVT2
Are in a descrambling state.

The CPU 58 changes the filtering conditions of the TS decoder 50 and interprets and executes the contents of the navigation data selected by the TS decoder 50 (step S194). A detailed flowchart of step S194 will be described with reference to FIG.

The CPU 58 controls the video and audio data ES
(V) 11, ES (A) 11 packet ID “0x00”
96 ”and“ 0x0098 ”are stored in the ES separation register (not shown) of the TS decoder 50 in the navigation data N.
The packet ID “0x0092” of VT1 is set in a control data separation register (not shown) of the TS decoder 50 (step S200).

Thus, the TS decoder 50 separates the separated video and audio data ES (V) 11, ES (A) 1
1 is output to the AV decoder 52. AV that received this
The decoder expands (decompresses) the compression and performs D / A conversion to generate a video composite signal. This signal is
It is provided to the TV set 46 and output as video and audio. Here, it is assumed that a moving image of television shopping of daily necessities as shown in FIG. 21 is displayed. The buttons B0 and B1 at the lower right of the screen are displayed by navigation data described later, and are not included in the video and audio data ES (V) 11 and ES (A) 11.

Further, the CPU 58 controls the TS decoder 50
When the navigation data NVT1 is received from the
Interpret and execute VT1. Here, it is assumed that the navigation data NVT1 as shown in FIG.

The CPU 58 sets the object index number “0” as the target index from the object table of the navigation data NVT1 in FIG. 14 (step S202). The CPU 58 displays a bitmap in the focused state for the target index and a normal state for the other indexes (step S204). Specifically, since the target index is the index “0”, the data of the bitmap index number “1” in the focus state is stored for the index “0” of the object table, and In the normal state, the data of the bitmap index number "2" is controlled to be displayed. That is, for the index “0” in the object table, the X coordinate “5”
00 ”and data of bitmap index number“ 1 ”(highlighted“ Apply to Center ”) at the position of Y coordinate“ 200 ”, and X coordinate“ 500 ”for index“ 1 ”of the object table. , Y coordinate “4
The respective data are AV-coded so that the data of bitmap index number “2” (non-highlighted display of “to the clothing store”) is displayed at the position of “00”.
This is supplied to the video synthesizing section 52c of the decoder 52 (see FIG. 17). Thereby, the video synthesizing unit 52c outputs the video data ES
(V) Image data in which a highlight display of “apply to the center” and a non-highlight display of “to the clothing shop” are superimposed on 11 are generated. As described above,
As shown in FIG. 21, a display in which the buttons B0 and B1 are superimposed on the moving image of the product description is obtained. As is apparent from the screen, the button B0 "Apply for Center" is displayed as being selected.

Next, the CPU 58 determines whether or not there is a key input (step S206). When there is a key input, the CPU 58 determines the type of the key input (step S2).
08). In the present embodiment, either the cursor movement key or the enter key of the remote controller 78 (or the operation panel of the main body) shown in FIG. 20 is determined. The type of the key can be determined by a notification from the operation input unit 54 (see FIG. 16).

If the input key is a cursor movement key, CPU 58 changes the index of interest according to the operation (step S210), and performs the display processing of step S204. For example, if the key operation is “the key to move the cursor down”, the process proceeds to step S205, and the focused index bitmap data is displayed for the target index according to the operation of the operator, and the screen display is shown in FIG. Button B1 "To the clothing shop"
Is selected.

In the above embodiment, only the operations of the up and down cursor keys 80 and 82 are shown. However, if the object indexes are arranged in a two-dimensional array, the operations are performed in consideration of the left and right keys 86 and 88. be able to.

In the state of FIG. 22, when the enter button 84 of the remote controller 78 is pressed, the CPU 58 proceeds to the processing from step S208 to step S212 in FIG. In step S212, the CPU 58 acquires the handler index described in the handler column of the currently selected object index with reference to the navigation data NVT1. Here, since the object index “1” is selected, the handler index “1” of the handler column is acquired.

Further, referring to the handler definition table, the script corresponding to the handler index "1" is extracted and executed (step S214). Here, "go
tocontents (index 1) ". The script "go
to contents () '' is shown in the hyperlink table ()
This is a command for switching to a content having an index number within. Therefore, switching to the content (TV shopping for clothing) with the hyperlink index “1” indicated in the hyperlink table is performed.

In the hyperlink index “1” of the hyperlink table, the packet ID “0x00” of each of video, audio, and navigation data is set as a link destination.
97, "0x0099", and "0x0093". The CPU 58 stores the packet ID “0x0097” and “0x009” in the ES separation register of the TS decoder 50.
9 ", and the packet ID" 0x0093 "in the control data separation register.

As a result, the video data ES (V) 12 and the audio data ES (A) 12 are output from the TS decoder 50 to the AV decoder. Therefore, TV set 46
Displays a moving image of television shopping of clothing as shown in FIG. 23 and outputs the sound.

Further, the navigation data NVT2 shown in FIG. 15 is separated by the TS decoder 50 and recorded in the memory 60 instead of the navigation data NVT1. About this navigation data NVT2,
The processing shown in FIG. 19 is performed, and buttons B10 and B12 are displayed as shown in FIG.

When the operator presses the enter button 84 (see FIG. 20) in a state where the “Apply to center” button B10 is selected as shown in FIG. 23, the purchase application for the product displayed on the screen is made. It can be carried out. Hereinafter, the processing will be described.

When the enter button 84 is pressed, the CPU 58
Advances the process from step S208 to step S212 in FIG. In step S212, the handler index is acquired from the handler column of the currently selected index according to the object table of the navigation data NVT2 (see FIG. 15).
Here, since the object index “0” is in the selected state, the handler index “0” is acquired.

The CPU 58 executes a script corresponding to the handler index “0” in the handler definition table. In other words, the script "regist_delayed_connectio
n "is executed. The script "regist_delayed_connec
“action ()” is an instruction to register delayed transmission data based on the argument in ().

The delay transmission data registration processing will be described. The arguments of the script regist_delayed_connection () are, from the top, “order registration number”, “destination phone number”, “product code”, “service start time”, “first call setting time width”, “service end time”, “ Retry cycle ".

CPU 58 generates delayed transmission data based on these arguments. Specifically, the transmission scheduled time is calculated, and necessary data is stored in the memory 60 as delayed transmission registration information. For the first scheduled transmission time, a random number of delay times may be generated within the initial transmission set time width, and the obtained delay time may be added to the service start time. For example, in this case, since the initial transmission setting time width is 2 hours, a random number is calculated in the range of 0 to 2 hours, and the transmission scheduled time is obtained.

[0120] The first scheduled transmission time may be stored directly in the navigation data NVT1.

FIG. 24 shows the delayed transmission registration information generated by such processing. In FIG. 24, two delayed transmission registration information generated by the navigation data NVT1 and the navigation data NVT2 are stored.

When the processing in step S214 ends, C
PU58 executes the script regist_del
It is determined whether it was ayed_connection () (step S216). Executed script is script regist_d
If it is not elayed_connection (), in this case, since the script is a content switching script, the processing from step S200 is repeated. On the other hand, when the executed script is the script regist_delayed_connection (), the processing illustrated in FIG. 19 ends.

Thus, the reception processing ends.

2.5 Delayed Transmission Processing The delayed transmission processing employed in this embodiment will be described with reference to FIGS. 25 and 26. Here, the memory 60
It is assumed that the delayed transmission registration information shown in FIG.

CPU 58 determines whether or not there is registration information in the delayed transmission registration information table of memory 60 (FIG. 2).
5 steps S301). In this case, since there is registration information in the delayed transmission registration information table, the delayed transmission registration information at the earliest scheduled transmission time is read (step S303). In this case, since the scheduled transmission time is earlier for the delayed transmission registration information of the order registration number “007” than that for the order registration number “001”, the delayed transmission information of the order registration number 007 is read. Specifically, the order registration number “007”, the destination telephone number “06-6900-xxxx”, the product code “B-133”, and the scheduled transmission time “1999.1.1”
0.13: 30: 00 ”, service end time“ 199
9.1.10.16:00:00 ”, and the retry cycle“ 1
"0 minutes" is read from the memory 60.

The CPU 58 determines that the current time is the scheduled transmission time “1”.
999.1.10.13:30:00 "(step S305). If the current time does not match the scheduled transmission time, it is determined whether or not the registration information in the delayed transmission registration information table has changed (step S30).
7). If there is no change in the registration information, step S30
Step 5 is repeated. On the other hand, when there is a change in the registration information, the process returns to step S301, and it is determined whether the registration information exists.

On the other hand, if the current time matches the scheduled transmission time at step S305, the corresponding registration information is transmitted according to the communication protocol (step S309). In this case, it is transmitted as follows. CPU 58
Is the destination telephone number “06-690” of the delayed transmission information.
0-xxxx ”is obtained and the line communication unit 76 shown in FIG.
To make a call to “06-6900-XXXX”. This telephone number is the telephone number of the TV shopping reception center. When the line is connected, the CPU
58 transmits the argument data “product code: B-133” and the ID for specifying the product purchaser. The ID of the purchaser may be obtained from the IC card 56 or the memory 60, for example. Thus, the ordering of the product specified by the operator is completed.

The CPU 58 determines whether or not the communication has succeeded (step S311). If the communication has succeeded, the transmission result (in this case, “success”) is recorded in the memory 60 (step S313). The CPU 58 deletes the delayed transmission registration information (step S315). Then, step S301 and subsequent steps are repeated.

On the other hand, if the communication was not successful in step S311, the CPU 58 records the result of the transmission (in this case, "failure") in the memory 60 (step S321 in FIG. 26). For example, the case where the center telephone is busy is applicable.

Next, the CPU 58 determines whether or not the retry should be stopped (step S323). This determination will be described later.

If the CPU 58 determines that the retry should not be canceled, the scheduled transmission time of the failed order registration number is rewritten in order to automatically retry (step S325). Specifically, the retry cycle is added to the current scheduled transmission time, and rewritten to the newly calculated scheduled transmission time. In this case, the new scheduled transmission time is “1999.1.10.13:40:00”.

The CPU 58 sets the new scheduled transmission time "19
It is determined whether or not "99.1.10.13:40:00" exceeds the service end time (step S327). In this case, since the new scheduled transmission time does not exceed the service end time “1999.1.110: 60: 00” shown in FIG. 24, the processing from step S301 in FIG. 25 is repeated.

When the new scheduled transmission time exceeds the service end time in step S327 in FIG. 26,
The CPU 58 records the result of the transmission (in this case, "expired") (step S329). Further, the CPU 58
Deletes the registration information (step S331).

In this manner, the processing of FIGS. 25 and 26 is repeated.

Note that the recorded transmission result may be output, for example, so that it can be notified when an order is placed. For example, as a transmission result, the order registration number “0”
If the order of “07” is not successful by the service end time and the order of the order registration number “001” is successful, FIG.
Is displayed on the TV set 46.
In this example, the response information of the order registration number 001 is "1
3:52 Talking "," 13:57 Talking "...
"14:12 Success", and the response information of the order registration number 007 indicates that "13:30 busy", "13:40 busy" ... "16:00 timeout" I have.

By displaying such a log, it is possible to know whether or not a purchase request for a product has been correctly made. The date and time of communication may be obtained from the control data TDT included in the transport stream, a calendar, a clock, or the like built in the CPU itself. The communication result may be notified not only when the order is established but also when the order is not established. For example, an LED provided on the main body may be turned on or displayed on a monitor each time. Also, these may be displayed collectively. For example, the transmission history of the response information may be stored and displayed in a list. Further, the transmission history may be displayed separately for each response information of each order registration number.

2.6 Processing for Detecting Cause of Delayed Transmission Next, the processing in step S323 in FIG. 26 will be described. In this embodiment, if the communication process with the center side is not completed, the retry process is not repeated until the service end time is determined based on the retry cycle transmitted from the broadcasting station to obtain the scheduled transmission time. The retry process is changed depending on the cause of the inability to communicate with the server.

In the present embodiment, the condition for stopping the retry processing is stored, and if the reason for failure in step S321 matches the stored condition, the retry processing is stopped. For example, there is a case where a call is connected to the other party, but negotiation with the other party's modem is not possible. In this case, for example, the destination telephone number in the navigation data shown in FIG. 14 may be incorrect. In such a case, even if the retry process is repeated, it is not considered that communication is possible. is there.

[0139] Another case where the retry processing is stopped is, for example, a case where a telephone cannot be connected to the center even after retrying a predetermined number of times. In this case, it is considered that the connector from the receiver to the telephone is disconnected, and even if the retry is performed many times, the telephone will not be called even to the center. In this case, since it is an abnormal state that it is not possible to call the other party even, the retry process is stopped. In this case, a message may be displayed to confirm that the telephone line is not disconnected. After the message is displayed, if the confirmation button is pressed, a retry may be performed again.

In the present embodiment, since the transmission is delayed, it is difficult for the user to grasp when the receiver transmits the response information. The telephone line may be shared by a general telephone and a receiver. In this case, the telephone line may be used by the user. In this case, when the use of the telephone by the user is completed, this is detected, and the time after a lapse of a predetermined second (for example, after a lapse of 10 seconds) may be determined as the scheduled outgoing time.

2.7 Calculation of First Scheduled Transmission Time The first scheduled transmission time may be calculated by the following method. A probability density function of the horizontal axis time and the vertical axis probability density as shown in FIG. 28A is broadcasted from a broadcasting station, and a random number is generated on the receiving side based on the broadcast frequency function to determine the first scheduled transmission time. Good.

The probability density function in FIG. 28A is a function of probability density 2 from the start to 30 minutes and a function of probability density 1 from 30 minutes to 1 hour. This function is, for example, ｛(0
0: 00: 00-00: 29: 59, 2), (00: 3
0: 00-00: 59: 59, 1)}. As described above, by using the probability variation data in which the probability density changes with the passage of time, delayed transmission on the receiving side can be more reliably controlled from the transmitting side. This is for the following reason.

It is possible to predict to some extent the empirical rule as to what percentage of answer calls are made for a certain product. Under such an expectation, the amount of telephone lines prepared by the center is usually determined. For example, 100 lines are prepared for 30 minutes from the beginning, and 50 lines are reduced after 30 minutes have elapsed. Therefore, the communication line prepared by the response information receiving device cannot be effectively used simply by delay-dispersing the response from the receiving side. On the other hand, by transmitting the probability variation data matched to the communication line prepared from the transmitting side and determining the first scheduled transmission time with a random number based on the data, the response is almost completed at this probability. Done. Thus, the communication line prepared by the response information receiving device can be used effectively.

A method of determining the scheduled transmission time when using such a probability density function will be described. The receiving side generates a random number with the area (hatched portion) specified by the function as the maximum value of the random number, and calculates a time corresponding to the value. For example, in the function shown in FIG. 28A, the total area is 30 * 60 *
2 + 30 * 60 * 1 = 3600 + 1800 = 5400. Note that * 60 is expressed in seconds.

A random number is generated by setting 5400 as the maximum value of the random number. Then, the delay time is calculated so that the obtained random number becomes the area. In this case, since the probability density is changed at the boundary of 3600, if it is 3600 or less, for example, if 388 is a generated random number, as shown in FIG. 28B, 388/2 = 194, that is, 3 Min 14
The call will be sent in seconds. In contrast, a random number of 500
When 0 is obtained, as shown in FIG. 28C, (50
00-3600) + 1800 = 3200, that is, 5
The call will be sent after 3 minutes and 20 seconds.

Note that the probability variation data may be specified by a probability distribution function as shown in FIG. 29 instead of a probability density function as shown in FIG. FIG. 29A shows FIG. 28A as a probability distribution, in which the vertical axis represents a random number generation value and the horizontal axis represents time. This function is, for example, $ (00: 29: 59,3)
600), (00:59:59, 5400)}. The receiver generates a random number with the maximum value of the value on the vertical axis of the graph as the maximum value of the random number, and sets the corresponding random time as the delay time for obtaining the time on the horizontal axis. For example, assuming that a random number generation value 388 is generated, if the random number generation value is 3600 or less, t = 定義 y is defined.
388 * 1/2 = 194, that is, 3
The call will be sent 14 minutes later. On the other hand, if a random number 5000 is obtained, it is defined by t = y-1800, and as shown in FIG.
0 = 3200, that is, transmission is performed after 53 minutes and 20 seconds.

Note that not only the first scheduled transmission time but also the retry time can be determined based on the probability variation data without using the retry cycle.

[0148] In addition to the above method, the dispersion of the initial scheduled transmission time may be performed by a delay dispersion process based on, for example, the time of operation by the operator, the id of the receiver, and the like, as in the related art.

3. Other Embodiments In the present embodiment, a case has been described where the data format of the argument in the navigation data is text data. However, the data format is not limited and may be, for example, a banana format. Further, the types of arguments in the script and the arrangement order are not limited.

In the above embodiment, whether or not retry should be stopped is determined. However, retry conditions may be changed. For example, instead of setting the retry cycle to a fixed time, for example, every 5 minutes, the retry cycle may be changed according to the situation. For example, data that shortens the retry cycle as the service end time approaches may be broadcast. Also,
If the number of retries exceeds a predetermined number, data that shortens the retry cycle may be transmitted.

In the above embodiment, the receiver side determines whether to change the retry condition by itself. However, the receiver side changes the retry condition based on a rewrite command from the center. You may. In this case,
The receiver may determine whether or not a rewrite command has been received, instead of determining in step S323.

Further, the condition change command may be broadcast to a broadcasting station, and the receiver receiving the command may change part or all of the corresponding registration information.

In this embodiment, the case where the condition for changing the retry process is stored in the data receiver in advance has been described. However, the condition may be rewritten by transmitting a rewrite command from the transmission side. Further, a plurality of such conditions may be set so that any one of them can be designated for each delayed transmission registration information. Further, different retry processing change conditions may be set for each script.

The registration information that can be edited from the transmission side may be any data of the delayed transmission registration information. For example, a retry cycle which is retry control information,
The product code as the response information or the scheduled transmission time as the delayed transmission control information may be used. For each data to be edited, an order registration number may be specified and a command to directly rewrite the data may be transmitted, or the data may be recalculated. As a method of performing the recalculation, the arguments of the script may be sent again, or the values of the navigation data may be referred to for some of the arguments. Further, only the difference data may be sent. For example, for data of a certain registration number, a value to be added to the current retry cycle or the like may be transmitted as differential data, and the receiving side may recalculate based on the differential data.

When merging a plurality of data, only a merge command may be transmitted. in this case,
The receiver that has received the merge command may refer to both merchandise codes and combine them into one data having two merchandise codes. Then, the other registration data may be deleted. For example, if the registration number 002 is the product code C200, the registration number 003 is the data for purchasing the product code C300, and both of them are ordering information for a telephone at the same center, when a merge command is received, the receiver sets the registration number By reading the product code C300 from 003,
The registration information of the registration number 002 may be replaced with the product codes C200 and C300, and the registration information of the registration number 003 may be deleted.

In this embodiment, the case where the present invention is applied to a television receiver has been described. However, any data receiver which receives broadcast data and transmits input or automatically generated response information can be used. Such a method can be applied.

In this embodiment, a case has been described where an analog public line is used as a communication line between each data receiver and the center. However, an ISDN line may be used, and a dedicated line may be used. You may. In the case of a dedicated line, the other party's id may be stored as the delayed transmission registration information instead of the other party's telephone number.

In the above embodiment, the log data stored in the receiver is displayed to notify the operator of the result of the response to the center. However, when the center receives the response information, the center receives the facsimile or the like. The operator may be notified of the completion of the delayed transmission using another communication medium. Such communication media include:
Automatic voice notification by telephone, e-mail, message function of EMM (Entitlement Manegement Message) in satellite broadcasting, and the like can be adopted. By notifying the operator of the data stored in the center side by broadcasting or another line, the result of the response with the center can be notified to the operator. In this way, the operation of receiving the response information is performed by another communication medium using the same line as the communication line between the center and the receiver, or by a communication line different from the communication line between the center and the receiver. Can be reliably notified to the person.

Further, the registration information shown in FIG. 24 may be displayed as a list on the screen. Furthermore, when the operator selects from the list, detailed information (such as a product image and a price) may be displayed. Further, the list display may be made editable by the operator. Further, the information may be displayed sequentially instead of the list display.

In the above-described embodiment, a case has been described where one service SV11 includes two types of video / audio ES, but one type of video / audio ES is transmitted to one service. The product described in the video data may change over time. In this case, correspondingly, navigation data having different contents (items with different product codes at index “2” in the character string table) may be transmitted.

In the above embodiment, two video / audio and two navigation data are used. However, three or more video / audio and three or more navigation data may be used. Also, one navigation data may be used for a plurality of video / audio, and a plurality of navigation data may be used for one video / audio.

In the above embodiment, a moving image is transmitted as video data and received, but a still image may be transmitted as video data and received. Specifically, as shown in FIG. 30, a set of still images A, B, C, and D is repeatedly transmitted as video data ES, and the plurality of still images A, B, C, and
By describing the link relations of D to each other in the navigation data object table and the hyperlink table,
As in the case of the above-described moving image, a service having interactive properties can be realized.

Note that, for a product for which purchase registration has been completed or for which registration has failed, product identification information such as a product name and a still image may be stored in a memory, and this may be displayed after communication is completed. .

In the present invention, a product includes not only a tangible entity but also an intangible service. In addition, although TV shopping has been described as an example, the same can be applied to audience rating surveys, collection of questionnaire information, quiz programs, and the like. Further, the present invention can be applied to a case where a request that can be understood by a computer is broadcast and collected data in a receiver is sent to a center side, such as a billing system for software (including not only programs but also contents). In this case, the actual response data corresponding to the product code and the actual response data id, which is the identifier of the actual response data corresponding to the order registration number, may be transmitted to the center.

In the present embodiment, the case where the operator inputs the response information has been described. However, the response information may be generated based on the data input by the operator. For example, in the above example, the scheduled transmission time is not the data input by the operator, but is generated according to the input data of the operator. Further, the data may be automatically created by the data receiver without data input by the operator. For example, in the case of an audience rating survey, the response information can be automatically generated by the receiver.

In this embodiment, the service start time is later than the actual broadcast time. Therefore,
Even when the broadcast data is stored on a hard disk or a recording medium and is viewed at a time when the data can be viewed, the user of the data receiver can enjoy the benefits of the target service. In particular, if a response is made before the service start time after the start of the broadcast, a delayed transmission from the receiving side is performed according to the probability variation data.

In the present embodiment, the transmitting side receives a response information receiving device identifier as a destination telephone number, a response information number as a product code, a delayed transmission control data as a service start time, an initial transmission setting time width, a service end time, And a retry cycle. However, the delay transmission control data only needs to include data for controlling the delay transmission, and for example, the maximum number of retries may be stored instead of the service end time.

In this embodiment, the case where the broadcasting side and the receiving side are 1: many broadcasts and the receiving side and the response information receiving side are 1: 1 communication has been described. The same can be applied to a computer network as shown. In FIG. 31, a server 200 is a WWW server connected to the Internet and stores a plurality of contents. When a request is received, the server 200 transmits the corresponding contents to a request destination computer. In this case, the computers 210, 22
Requests from 0, 230, 240, and 250 at the same time, if the data volume of the content to be distributed is enormous, if the capacity of the line 201 is exceeded, requests from other computers will be accepted during download. An unsuccessful condition occurs. For example, a case where download requests are concentrated only at a certain time, such as a release of an upgrade program. In such a case, the concentration is temporary, and the concentration problem does not often occur beyond that time. In such a case, the line 20
1 can be effectively used without increasing the capacity.

Computers 210, 220, 230, 2
When a content download request is issued simultaneously from 40 and 250, a download request delay control program is delivered to each computer.
Such a delay control program is a program for dispersing transmission of the download start request to the server side as described above, and includes delay control information for delay processing. Note that the delay control processing is not limited to the above-described delay processing as long as the delay transmission can be performed.

Each computer calculates and stores the scheduled transmission time based on the delay control information. Then, at the scheduled transmission time, a download request is transmitted to server 200. As a result, even if requests from each computer are concentrated, the delay can be distributed.
Therefore, requests from each computer can be distributed according to the capacity of the line 201.

In this example, the distribution is distributed in chronological order. However, when there is a mirror site, the server 200 is connected to the mirror site so that the download request is distributed to the mirror site. The degree of congestion may be checked, and according to the degree of congestion, the destination id of the delay control program may be set so that a certain computer is downloaded from there.

Furthermore, the server id to be downloaded may be divided according to not only the degree of congestion but also the area of the computer that made the request.

Each computer is not always connected to the Internet, and may be connected to a provider via a telephone line. In such a case, when the delayed transmission time comes, a telephone call may be automatically made to connect to the Internet, and a download request may be made. In addition, each computer may be powered down. In such a case, the power management program may be started up, the power may be turned on at the time of the delayed transmission time, and the download request may be transmitted.

Further, in order to determine whether the download request is the download request due to the delayed transmission or the first download request, the delay transmission program may transmit data for distinguishing the request. In the present embodiment, the navigation data is transmitted together with the video data and the audio data. However, only the navigation data may be transmitted. Further, a case has been described in which a script is embedded in the navigation data, and the receiving side performs an execution process based on the script. However, HTML data may be transferred. In this case, a browser program for interpreting and displaying the HTML data on the receiving side may be prepared. Furthermore, HT
Instead of ML data, SGML data, XML data,
Data of a structure description language such as MHEG data may be used.

That is, the center causes the broadcasting side to transmit transmission request data, each data receiver receives the transmission request data, and the collection request data automatically generated based on the transmission request data or the manual input data. This can be applied to a case where the collected desired data is transmitted to the center side.

In the above embodiment, the response information receiving device can receive the response information from each television receiver according to the allowable amount of the communication line prepared by the response information receiving device. However, there may be more or less responses than the planned allowance. In this case,
The rewriting information for rewriting the delayed transmission registration information stored in each receiver may be transmitted from the response information receiving device 150 to the broadcasting device 140, and the broadcasting may be performed simultaneously. For example, if the order registration number “007” is ordered more than the planned quantity and the planned quantity is sold out, the broadcast side sends the order registration number “00” to each receiver.
The rewriting information for rewriting the service end time for “7” to the current time is broadcast. The receiver that has received this service refers to its own delayed transmission registration information table and, if there is order information for the order registration number “007”, rewrites this service end time to the current time. Thereby, the response from each receiver can be stopped.

In the above case, the response is stopped, but the service end time may be extended or the retry cycle may be changed. Further, the probability variation data may be changed. That is, the data for controlling the delayed transmission can be controlled from the transmission side. For example, a script may be broadcast in which two pieces of registration information applied to the center having the same telephone number are combined into one piece of registration information, and the script may be executed on the receiving side with reference to the delayed transmission registration information table. For such a grouping process, the communication efficiency can be optimized on the receiver side. However, some broadcasts do not want the same phone number to be grouped together. In such a case, it is desired that the transmitting side controls the processing on the receiving side.

In the present embodiment, the display program is stored in the memory.
It is stored in a recording medium such as OM, IC card drive or CD
-The data may be transferred to a non-volatile memory via a ROM drive and stored. Further, the program may be transferred by communication and stored in the nonvolatile memory.

In the present embodiment, the ID for specifying the purchaser of the product is acquired from the IC card 56 or the memory 60 and transmitted together with the ID. However, an address, a name, and the like are input on the screen. Script may be sent as navigation data.

Further, the delayed transmission registration information may be stored in a rewritable nonvolatile memory. As a result, the delayed transmission registration information can be retained even when the power supply such as a power outage is lost.

In the above embodiment, some or all of the functions realized using the CPU may be realized by hardware. In any of the above embodiments, some or all of the functions realized by hardware may be realized by using a CPU.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a transmission state of radio waves in satellite broadcasting.

FIG. 2 is a diagram illustrating a configuration of a transmission device in satellite broadcasting.

FIG. 3 is a diagram showing a transport stream transmitted in satellite broadcasting.

FIG. 4 is a diagram showing a structure of packetized data.

FIG. 5 is a diagram showing the contents of control data PMT1.

FIG. 6 is a diagram showing the contents of control data PAT.

FIG. 7 is a diagram showing the contents of control data NIT.

FIG. 8 is a diagram illustrating a general configuration of a receiving device.

FIG. 9 is a diagram showing an overall configuration of a bidirectional transmission / reception system according to the present invention.

FIG. 10 is a detailed functional block diagram of the receiver in FIG. 9;

FIG. 11 is a diagram illustrating a transport stream to be transmitted.

FIG. 12 is a diagram showing the contents of control data PMT1.

FIG. 13 is a diagram showing the contents of control data PAT.

FIG. 14 is a diagram showing the contents of navigation data NVT1.

FIG. 15 is a diagram showing the contents of navigation data NVT2.

FIG. 16 is a diagram illustrating a hardware configuration of a receiver.

FIG. 17 is a diagram illustrating details of an AV decoder 52.

FIG. 18 is a flowchart of a program in a reception process.

FIG. 19 is a flowchart of a program (basic program) for interpreting and executing navigation data.

FIG. 20 is a diagram showing an appearance of a remote control device 78.

FIG. 21 is a diagram showing a daily necessity television shopping screen displayed on the TV set 46.

FIG. 22 is a diagram showing a daily necessity television shopping screen displayed on the TV set 46.

23 is a diagram showing a clothing TV shopping screen displayed on the TV set 46. FIG.

FIG. 24 is a diagram showing a delayed transmission registration information table.

FIG. 25 is a flowchart of a delayed transmission registration process.

FIG. 26 is a flowchart of a delayed transmission registration process.

FIG. 27 is a diagram showing the contents of a communication log recorded in a memory 60.

FIG. 28 is an example of a probability density function.

FIG. 29 is an example of a probability distribution function.

FIG. 30 is a diagram illustrating a case where a still image is transmitted.

FIG. 31 is a diagram illustrating another embodiment.

[Explanation of symbols]

140 Broadcasting device 150 Response information receiving device 160 _{1 to} 160 n TV receiver 161 · Receiving means 163 ············ Display means 165 ········· Input means 167 ····························· Transmission means

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04N 5/44 H04N 5/44 Z 7/08 7/08 Z 7/081

Claims (35)

[Claims] 1. A data transmitting / receiving system for transmitting data from a broadcasting station to a plurality of television receivers by broadcasting and transmitting response information from the television receiver to a response information receiving device via a communication line, wherein the broadcasting station comprises: When each of the television receivers does not establish communication with the response information receiving device, the retry information for each of the television receivers to retry transmission is included in the data and transmitted. Characteristic data transmission / reception system. 2. A data transmitting / receiving system for transmitting data by broadcasting from a broadcasting station to a plurality of television receivers and transmitting response information from the television receiver to a response information receiving device via a communication line, wherein the television receiver comprises: When data including retry information for retry transmission with the response information receiving device is received from the broadcast station when communication is not established with the response information receiving device, based on the retry information, Retransmitting the response information. 3. A broadcasting device for broadcasting data, a plurality of television receivers for receiving the data, a television receiver for transmitting response information via a communication line, and receiving each of the televisions via the communication line. Connected to the
A response information receiving device for receiving response information from the television receiver, the data transmitting and receiving system, wherein the broadcasting device transmits retry information corresponding to an allowable amount of the communication line in the data. Wherein, when communication is not established with the response information receiving device, the television receiver retransmits the response information based on the received retry information, Transmission / reception system. 4. A television receiver for receiving data broadcasted from a broadcasting device, displaying an image, and transmitting response information to and from a response information receiving device via a communication line. And a retry transmission of the response information to a response information receiving device based on the retry information received from the broadcast device when communication is not established between the television receiver. 5. A receiving means for receiving data transmitted from a broadcasting device, a display data output means for outputting display data based on the received data to a display means, and an operator responding based on a display on the display means. Input means for inputting information, means for transmitting the response information via a communication line, and when communication with the response information receiving device is not established, retry included in the data Communication means for retry transmitting the response information based on the information. 6. A receiving means for receiving data transmitted from a broadcasting device, a display means for displaying display data based on the received data, a means for communicating response information via a communication line, the response information comprising: If communication has not been established with the receiving device, based on the retry information given from the broadcast device,
A television receiver comprising: communication means for retry transmitting the response information. 7. The television receiver according to claim 4, 5 or 6, wherein the first scheduled transmission time with the response information receiving device is:
Random identification based on the received delay information and identification. 8. The television receiver according to claim 4, 5, 6, or 7, wherein based on a transmission end time given from the broadcasting device,
Deciding whether to retry transmission or not. 9. The television receiver according to claim 4, further comprising a detecting means for detecting a cause of a failure of communication with the response information receiving device. thing. 10. The television receiver according to claim 9, further comprising retry condition changing means for changing a condition of retry transmission from the next time on the basis of the detected cause. 11. The television receiver according to claim 10, wherein said retry condition changing means generates notification data for changing a set time width of the next and subsequent retry transmissions. 12. The television receiver according to claim 10, wherein said retry condition changing means stops retry transmission. 13. The television receiver according to claim 9, wherein notification data for notifying the detected cause is generated. 14. The television receiver according to claim 4, 5 or 6, wherein a remaining transmission time is calculated from a transmission end time provided from the broadcasting device, and the retry is performed according to the remaining transmission time. Changing transmission conditions; 15. The television receiver according to claim 4, wherein notification data for notifying a result of communication with said response information receiving device is generated. 16. The television receiver according to claim 15, wherein a communication result is received from said response information receiving device to generate notification data. 17. The television receiver according to claim 15, wherein a communication history with said response information receiving device is stored and notification data is generated. 18. The television receiver according to claim 7, further comprising: storage means for storing the response information to be delayed transmitted, and notification means for notifying the response information when a notification command is given from an operator. Features. 19. The television receiver according to claim 18, further comprising editing means for editing said response information when an editing command is given from an operator. 20. A data receiver comprising: receiving means for receiving data transmitted from a broadcasting device; and communication means for transmitting response information via a communication line, wherein the communication means is a response information receiving device. And a retry transmission of the response information based on the retry information included in the received data when communication is not established between the data receiver. 21. The data receiver according to claim 20, wherein said communication means has the following: 1) When communication is not established with said response information receiving device, said retry is performed. Retry time specifying data calculating means for calculating retry time specifying data for specifying a retry time based on information; 2) transmitting means for retransmitting the stored response information when the retry time is reached. What to do. 22. The data receiver according to claim 20, wherein the first scheduled transmission time with the response information receiving device is:
Random identification based on the received delay information and identification. 23. The data receiver according to claim 20, wherein based on a transmission end time given from said broadcasting device,
Deciding whether to retry transmission or not. 24. The data receiver according to claim 20, further comprising a detection unit configured to detect a cause of a failure of communication with the response information receiving device. 25. A data transmission / reception system for transmitting data by broadcasting from a broadcasting station to a plurality of data receivers, and delaying and transmitting response information from said plurality of data receivers to a response information receiving device via a communication line, The broadcasting station transmits retry information included in the data, and the data receiver, when communication is not established with the response information receiving device, the response based on the retry information When the response information receiving device receives the response information from the data receiver, the response information receiving device notifies the operator of the data receiver that the response information has been received by a communication line different from the communication line. Providing a data transmission / reception system. 26. A server storing predetermined data, and a plurality of computers connectable to the server. When the computer transmits a download request to the server, the server is specified by the download request. In the data transmission / reception system that transmits data to the computer, the server, upon receiving the download request, transmits a download request delay transmission program to the computer that transmitted the download request, and the computer transmits the received download request delay. A data transmission / reception system, which delay-transmits a download request to the server based on a transmission program. 27. A server connected to a plurality of computers, which, when receiving a download request from any one of the computers, causes the computer specified by the download request to transmit the data specified by the download request. And transmitting a download request delay transmission program for delay-transmitting the download request to the server. 28. A broadcasting device for broadcasting data, a plurality of data receivers for receiving the data, a data receiver for transmitting response information via a communication line, and receiving each of the data via the communication line. Connected to the
A response information receiving device that receives response information from the data receiver, wherein the broadcast device includes, in the data, probability variation data in which a generation probability of generating a transmission time varies with time. A data transmission / reception system, wherein the data receiver determines a scheduled transmission time to be transmitted to the response information receiving device based on the received probability variation data. 29. A data transmitting / receiving system for transmitting data by broadcasting from a broadcasting station to a plurality of data receivers and transmitting response information from the data receiver to a response information receiving device via a communication line, wherein the data receiver comprises: Receiving, from the broadcast device, probability variation data in which the generation probability of generating the transmission time varies with time, determining the scheduled transmission time to be transmitted to the response information receiving device based on the received probability variation data. A data transmission / reception system, characterized in that: 30. A data receiver for receiving data broadcast from a broadcasting device and transmitting response information to a response information receiving device via a communication line, wherein a generation probability of generating a transmission time from the broadcasting device is time. Receiving the probability fluctuation data that fluctuates together with the data, determining a scheduled transmission time to be transmitted to the response information receiving device based on the received probability fluctuation data. 31. The data receiver according to claim 30, wherein, when a transmission start possible time is received from the broadcasting device, a random number is generated for the time until the transmission scheduled time using the received probability variation data, and the transmission is performed. Determining a scheduled time; 32. A data transmission / reception method for receiving broadcast data and transmitting response information via a communication line, the method comprising: receiving data including retry information according to an allowable amount of the communication line; Retransmitting the response information based on the received retry information when communication using a line is not established, a data transmission / reception method. 33. A data transmission / reception method for transmitting response information via a communication line when receiving broadcast data, wherein the data includes probability variation data in which a generation probability for generating a transmission time varies with time. The data transmission / reception method, wherein the scheduled transmission time included in the data and transmitted via the communication line is determined based on the received probability variation data. 34. A recording medium storing a program for controlling a television receiver which receives data broadcasted from a broadcasting device and transmits response information to a response information receiving device via a communication line by a computer. Then, the program performs the following processing, If the communication is not established with the response information receiving device, based on the retry information received from the broadcast device, the response information A recording medium storing a program characterized by retransmitting to a response information receiving device. 35. A recording medium storing a program for controlling, by a computer, a data receiver that receives data broadcasted from a broadcasting device and transmits response information to a response information receiving device via a communication line, The program performs the following processing: upon receiving, from the broadcasting device, probability variation data in which the generation probability of generating the transmission time varies with time, the transmission scheduled time transmitted to the response information receiving device is received. A storage medium storing a program characterized by determining based on the obtained probability variation data.