JP2001320689A - Digital broadcast transmission reception system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem of a conventional digital broadcast transmission reception system that has imposed a regular reception charge on a viewer even when a reception state is deteriorated due to inevitable causes such as deteriorated meteorological condition like rainfall and a faulty receiver in the receiver for a digital broadcast signal. SOLUTION: The receiver in the digital broadcast transmission reception system of this invention that broadcasts video, audio, character information or the like by means of a ground wave and a satellite wave, detects a reception state of a digital broadcast, transmits the detected reception state to a transmitter via a communication channel, and the transmitter manages the reception state of the viewer and does not impose charging on the viewer when the reception state is deteriorated (charging is imposed on the viewer depending on the reception state) as the characteristic of the digital broadcast transmission reception system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast transmission / reception system, and more particularly to a digital broadcast transmission / reception system in which a broadcast provider can grasp the receiving state of a viewer in real time.

[0002]

2. Description of the Related Art In digital broadcasting using a broadcasting satellite, the frequency of a transmitted radio wave is extremely high in the GHz band, and thus the received radio wave is attenuated due to deterioration of the transmission environment such as rainfall. In this case, in digital transmission, bit errors increase due to attenuation of received radio waves, but bit errors up to a certain level can be reproduced with stable image and sound by error correction. However, due to the remarkable attenuation of the received radio wave, when the error correction capability is exceeded, suddenly, reproduction of images and sounds cannot be performed.

FIG. 3 shows a system configuration diagram using the prior art. In FIG. 3, reference numeral 1 denotes a digital broadcast transmitting device for transmitting a digital broadcast signal, 2 denotes a satellite wave or terrestrial wave transmission line for transmitting a transmission radio wave transmitted from the digital broadcast transmitting device 2, and 3 denotes a transmission line via the transmission line 2. A digital broadcast receiving device for receiving the received digital broadcast radio wave and converting it into a display signal; and 4, a communication such as a telephone line capable of performing two-way communication between the digital broadcast receiving device 2 and the digital broadcast transmitting device 1. Line.

[0004] Reference numerals 101 to 107 denote components constituting the digital broadcast transmitting apparatus 1, reference numeral 101 denotes an information storage unit for storing digital information such as images and sounds of a broadcast program, and reference numeral 102 denotes digital information output from the information storage unit 101 by MPEG. An encoder for converting code data output from the encoder 102 into transmission radio waves; a transmission antenna 104 for transmitting transmission radio waves output from the modulation section 103; A communication unit for receiving the reception status information sent from the digital broadcast receiving apparatus 3 by the user; 106, a viewer charging database for managing charging information of digital broadcast viewers;
A control unit that controls each of the components from to 106.

[0005] Reference numerals 301 to 306 denote components constituting the digital broadcast receiving apparatus 3, reference numeral 301 denotes a receiving antenna for receiving a digital broadcast transmission radio wave transmitted via the transmission line 2, and reference numeral 302 denotes a receiving antenna for receiving the digital broadcast transmission radio wave. A demodulation unit for demodulating a received radio wave into code data;
A decoder for decoding the code data output from the digital broadcast receiver into original data to be displayed on a CRT or the like; 304, a recording unit for recording the history of received programs received by the digital broadcast receiving apparatus 2;
Reference numeral 5 denotes a communication unit for transmitting the received program history information stored in the recording unit 304 to the digital broadcast transmitting apparatus 1 via the communication line 4, and reference numeral 306 denotes a control unit for controlling the components 302 to 305.

In the prior art shown in FIG. 1, when the reception state deteriorates, an I frame image (intra-frame coded image data) of an encoding system (MPEG code) used in digital broadcasting is used.
There is a method of reproducing a moving image at the level of a frame advance using only a frame, and performing a reproducing operation when the reception state is deteriorated (Japanese Patent Laid-Open No.
0-336677).

[0007]

However, if the reception error is excessive due to the worsening weather conditions, the reproduction of the I frame becomes impossible, and the moving image display at the level of the frame advance cannot be performed.
In the prior art, in this case, a message indicating deterioration of reception is displayed, but the viewer completely overlooks the viewed program during that period. Also, in the case of a reception error to the extent that the I-frame can be reproduced, if the period extends for a long time, the mental burden on the viewer is large, and it is difficult to continue viewing. As described above, there is a large difference between the viewing state and the normal reception state.

[0008] Such a conventional system has the following problems. The viewer was charged a legitimate reception fee despite the reception impediment due to force majeure such as deterioration of weather conditions and malfunction of the reception device. Rebroadcasting of broadcast programs was not carried out even when there were many viewers who had reception problems.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a receiving apparatus detects a receiving state of a digital broadcast, transmits the detected receiving state to a transmitting apparatus via a communication line, and the transmitting apparatus receives the received state. The receiving state of the viewer is managed, and if the receiving state is poor, the viewer is not charged (the viewer is charged according to the receiving state). , The number of viewers whose reception status is poor is calculated.

According to the present invention, it is possible to provide a digital broadcast transmitting / receiving system capable of the following. When a reception failure such as deterioration of weather conditions or malfunction of a reception device occurs for a viewer, a reception fee can be charged in consideration of the reception failure. The number of viewers having a reception failure can be ascertained. If the number is large, program scheduling including rebroadcasting of broadcast programs can be performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first invention of the present invention is a digital broadcast transmitting / receiving system for broadcasting information such as video, audio and text via terrestrial waves and satellite waves. Detect and transmit the detected reception status to the transmission device via the communication line, and the transmission device manages the reception status of the received viewer, and does not charge the viewer when the reception status is poor ( The viewer can be charged according to the reception state).

According to a second aspect of the present invention, there is provided a digital broadcast transmitting / receiving system for broadcasting information such as video, audio, text, and the like via a terrestrial wave or a satellite wave. The state is transmitted to the transmitting apparatus via the communication line, and the transmitting apparatus has an effect of managing the receiving state of the received viewer and calculating the number of viewers having a poor receiving state.

An embodiment of a digital broadcast transmitting / receiving system according to the present invention will be described below with reference to FIGS.

(Embodiment 1) FIG. 1 is a configuration diagram of a digital broadcast transmitting / receiving system according to a first embodiment of the present invention. In FIG. 1, 1 to 4, 101 to 106, 3
Reference numerals 01 to 306 are the same as those described in the configuration diagram of the prior art in FIG. 3. Reference numeral 5 denotes whether the reception state is good or bad by the demodulation operation of the demodulation unit 302 and the decoding operation of the decoder 303, and whether the reception state is good or bad. A receiving state detecting unit that outputs receiving state information that can be transmitted, a viewer receiving state managing unit that manages receiving state information transmitted from the digital broadcast receiving apparatus 3 to the digital broadcast transmitting apparatus 1 via the communication line 4, Reference numeral 7 denotes a billing calculation unit that calculates a bill based on the reception state information of each viewer managed by the viewer reception state management unit 6. The operation of FIG. 1 will be described below. The receiving operation of the digital broadcast receiving apparatus 3 is similar to that of the prior art, in that the broadcast radio wave received by the receiving antenna 301 is demodulated into code data by the demodulator 302, and the code data is decoded by the decoder 303 into original data such as images and sounds. I do. At this time, the reception state detection unit 5 monitors the demodulation operation of the demodulation unit 302 and the decoding operation of the decoder 303, and if a failure occurs in the reception state due to a change in the transmission path state such as rainfall or a malfunction, the reception state detection unit 5 The identification information which can identify the quality of the information is output. In the first embodiment, the demodulation unit 302
And a status code indicating the operation status of the decoder 303. When the code number corresponds to an error code, the reception status detection unit 5 detects that a failure has occurred in the reception status. The communication control unit 305 sends the state code at the time of the reception failure detected by the reception state detection unit 5 and the viewer code for identifying the viewer to the digital broadcast transmission device 1 via the communication line 4. In the digital broadcast transmitting apparatus 1, the communication control unit 105 receives the viewer code and the status code transmitted via the communication line 4, and stores the viewer code and the status code in the viewer charging database 10 respectively.
6. The storage is managed by the viewer reception state management unit 6. At the time of billing calculation, the billing determination unit 7 reads the status code of each viewer stored and managed by the viewer reception status management unit 6, and determines whether or not to charge and the number of charges.

(Embodiment 2) FIG. 2 is a configuration diagram of a digital broadcast transmitting / receiving system according to a second embodiment of the present invention. In FIG. 2, 1 to 4, 101 to 106, 3
Reference numerals 01 to 306 represent the configuration of the prior art shown in FIG.
8 is the same as the configuration described in the first embodiment. Reference numeral 8 denotes a reception disabled person who calculates the total number of viewer IDs having status codes corresponding to reception failures from status codes stored and managed by the viewer reception status management unit 6. It is a number calculation unit. The operation of FIG. 2 will be described below. As in the first embodiment, the receiving operation of the digital broadcast receiving apparatus 3 is performed by demodulating the broadcast radio wave received by the receiving antenna 301 into code data by the demodulation unit 302, and decoding the code data by the decoder 303. To decrypt. At this time, the reception state detection unit 5 monitors the demodulation operation of the demodulation unit 302 and the decoding operation of the decoder 303, and if a failure occurs in the reception state due to a change in the transmission path state such as rainfall or a malfunction, the reception state detection unit 5 The identification information which can identify the quality of the information is output. In a configuration for outputting a status code indicating the operation status of the demodulation unit 302 and the decoder 303, the reception status detection unit 5 determines whether the code number corresponds to an error code.
It detects that a failure has occurred in the reception state. The communication control unit 305 sends the state code at the time of the reception failure detected by the reception state detection unit 5 and the viewer code for identifying the viewer to the digital broadcast transmission device 1 via the communication line 4. In the digital broadcast transmitting apparatus 1, the viewer code and the status code transmitted via the communication line 4 are transmitted to the communication control unit 105.
And the viewer code and the status code are stored and managed by the viewer billing database 106 and the viewer reception status management unit 6, respectively. The number-of-reception-disabled persons calculation unit 8 reads the status code of each viewer stored and managed by the viewer reception state management unit 6, and calculates the number of viewers having a reception failure.

[0016]

As described above, according to the digital broadcast transmission / reception system of the present invention, the broadcaster can recognize the number of viewers and the number of viewers who cannot be received due to a reception failure such as rainfall. Is obtained. It is possible to construct a billing system in consideration of a reception failure, and to prevent an unreasonable billing of a viewer, thereby reducing complaints from the viewer. Without relying on local weather information such as when a typhoon occurs,
The number of viewers who have actually experienced a reception failure can be counted online, and a broadcast program can be seized when a reception failure occurs, and program scheduling such as program rebroadcasting can be performed. In addition, since the audience rating of each program can be calculated from the reception status managed in real time, the sponsor fee for the program sponsor that matches the audience rating can be set, which leads to equal profits to the program sponsor.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a digital broadcast transmission / reception system according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a digital broadcast transmission / reception system according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a digital broadcast transmission / reception system according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Digital broadcast transmission apparatus 2 Transmission path 3 Digital broadcast receiving apparatus 4 Communication line 5 Reception state detection part 6 Viewer reception state management part 7 Billing judgment part 8 Reception failure number calculation part 101 Video recording part 102 Encoder 103 Modulation part 104 Transmission Antenna 105 Communication control unit 106 Viewer charging database 107 Control unit 301 Receiving antenna 302 Demodulation unit 303 Decoder 304 Recording unit 305 Communication control unit 306 Control unit

Claims (4)

[Claims] 1. A digital broadcast transmitting / receiving system for broadcasting information such as video, audio, text, etc. via a terrestrial wave or a satellite wave.
The receiving device detects the receiving state of the digital broadcast, transmits the detected receiving state to the transmitting device via a communication line, and the transmitting device manages the receiving state of the received viewer. A digital broadcast transmission / reception system characterized by not charging viewers. 2. A terrestrial or satellite wave transmission path for transmitting digital information such as video, audio, and text, an information storage unit for storing the digital information to be transmitted, and information output from the information storage unit. Encoder, a modulator for modulating information encoded by the encoder and converting it to a transmission signal, a transmission antenna for transmitting a transmission signal output from the modulator, and a digital broadcast receiving device side via a communication line. A communication unit for receiving the billing information from the communication unit, a database for managing the billing information received by the communication unit, a digital broadcast transmitting device comprising a control unit for controlling the transmitting side, and a signal received from the transmission path. Receiving antenna, a demodulating unit for demodulating a received signal received by the receiving antenna and converting it to encoded information, and reproducing the encoded information demodulated by the demodulating unit. A digital broadcast transmitting / receiving system, comprising: a decoder; a storage unit for storing charging information; and a digital broadcast receiving device including a receiving communication unit that transmits the charging information stored in the storage unit via the communication line. A reception state detection unit for detecting whether the reception state is good or bad in the digital broadcast reception device, and a reception state detection result of the detection unit transmitted to the digital broadcast transmission device by the reception side communication unit, and the digital broadcast transmission device A digital broadcast, comprising: a viewer reception state management unit that manages received reception state detection results; and a billing calculation unit that does not charge a viewer whose reception state is not good, which is managed by the reception state management unit. Transmission / reception system. 3. A digital broadcast transmitting / receiving system for broadcasting information such as video, audio and text via terrestrial waves and satellite waves,
The receiving device detects the reception status of the digital broadcast, transmits the detected reception status to the transmission device via a communication line, and the transmission device manages the reception status of the received viewer, and the number of viewers having poor reception status And a digital broadcast transmitting / receiving system. 4. A terrestrial or satellite wave transmission line for transmitting digital information such as video, audio, and text, an information storage unit for storing the digital information to be transmitted, and information output from the information storage unit. Encoder, a modulator for modulating information encoded by the encoder and converting it to a transmission signal, a transmission antenna for transmitting a transmission signal output from the modulator, and a digital broadcast receiving device side via a communication line. A communication unit for receiving the billing information from the communication unit, a database for managing the billing information received by the communication unit, a digital broadcast transmitting device comprising a control unit for controlling the transmitting side, and a signal received from the transmission path. Receiving antenna, a demodulating unit for demodulating a received signal received by the receiving antenna and converting it to encoded information, and reproducing the encoded information demodulated by the demodulating unit. A digital broadcast transmitting / receiving system, comprising: a decoder; a storage unit for storing charging information; and a digital broadcast receiving device including a receiving communication unit that transmits the charging information stored in the storage unit via the communication line. A reception state detection unit for detecting whether the reception state is good or bad in the digital broadcast reception device, and a reception state detection result of the detection unit transmitted to the digital broadcast transmission device by the reception side communication unit, and the digital broadcast transmission device A digital broadcast receiver comprising: a viewer reception state management unit that manages a received reception state detection result; and a viewer number calculation unit that calculates the number of viewers whose reception state managed by the reception state management unit is not good. Broadcast transmission / reception system.