JP2003111055A - Two-way digital television receiver, broadcast facility and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impartially rank a response speed of replies of viewers in e.g. a faster button depression quiz program of viewer participation. SOLUTION: This invention provides the two-way digital television receiver, a broadcast facility and program where a count of an STC counter of an MPEG 2 decoder is attached to replies of viewers and the count is compared as time data so as to impartially rank response speeds of viewers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interactive digital television receiver, broadcasting equipment and programs.

[0002]

2. Description of the Related Art In recent years, with the widespread use of digital television, bidirectional communication has become possible in which a television station and a receiving terminal are connected by a telephone line or the like. In such a digital television capable of two-way communication, a completely new service such as a real-time participation program of viewers, which has been impossible in the past, becomes possible.

[0003]

As an interactive television program, for example, a quick-press quiz program with viewer participation, or the first-come-first-served basis 10
A TV shopping program limited to 0 people is possible. Such programs require fair ranking of viewer response speed. In order to maintain fairness, when the response operation from the viewer is sent from the interactive digital TV receiver to the interactive digital TV broadcasting facility, the communication connection speed between them is the same for all viewers. Will be needed. However, in the telephone line, the time from the connection request to the connection completion varies greatly. Even on the Internet, the time required for communication is not guaranteed.

That is, the method of sending only the contents of the response operation from the viewer from the interactive digital television receiver to the broadcasting facility for interactive digital television cannot fairly rank the response speed of the viewer. There is a problem.

As a method of transmitting from the interactive digital television receiver to the interactive facility for interactive digital television, for example, when it is transmitted via the Internet, there is a risk of spoofing or falsification in the middle of the route.

[0006]

In order to solve the above problems, the interactive digital television receiver of the present invention (Claim 1) is provided with the MPEG2 when an operation is performed according to the operation result of the viewer.
It has a means for adding the time data created using the value of the STC counter of the decoder or the value of the STC counter and transmitting it.

In order to solve the above problems, the broadcasting equipment for interactive digital television of the present invention (Claim 2) is provided with the STC counter value or the STC counter value sent in addition to the operation result of the viewer. It has means for ranking the response speed of the viewer to the broadcast contents by using the time data created by using the.

In order to solve the above-mentioned problems, an interactive digital television program according to the present invention (claim 3) includes an interactive digital television receiver according to claim 1 and a broadcasting facility for an interactive digital telesystem according to claim 2. At the ST of the MPEG2 decoder when an operation is performed on the operation result of the viewer,
It includes a procedure of adding time data created using the value of the C counter or the value of the STC counter and ranking the response speed of the viewer to the broadcast content from the transmitted result.

In order to solve the above-mentioned problems, an interactive digital television receiver according to the present invention (claim 4) is the interactive digital television receiver according to claim 1, wherein the operation result of the viewer and the value of the STC counter or It has means for encrypting a data portion including time data created using the value of the STC counter.

In order to solve the above-mentioned problems, the broadcasting equipment for interactive digital television of the present invention (claim 5) is defined by claim 2.
In the broadcasting equipment for interactive digital television according to, there is provided means for decrypting an encrypted data part including time data created by using the operation result of the viewer and the value of the STC counter or the value of the STC counter. There is.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 includes an interactive digital television receiver according to claim 1, an interactive digital television broadcasting facility according to claim 2, and an interactive digital television program according to claim 3 in an embodiment of the present invention. FIG. 3 is a diagram showing a characteristic part of the present invention.

In FIG. 1, 1 is an interactive digital TV broadcasting facility, 2 is an interactive digital TV receiver, 3 is program sending means, 4 is interactive digital TV program data, 5 is viewer response speed ranking means, 6 is time data extraction means, 7 is reception means, 8 is channel selection means, 9 is MPEG2 decoding means, 10 is audio output means, 11 is speaker, 1
2 is an STC counter, 13 is an image output means, and 14 is a CR
T (liquid crystal, PDP), 15 is data broadcasting interpretation means, 16
Is a sending means, and 17 is a sending data assembling means.

First, MPEG2 will be briefly described. MPEG2 is Moving Picture Exp
ITU-T is an abbreviation for rtGroup2, which is a standard for compressed digital video, digital audio, and digital information.
H. In 220, the MPEG2 TS (Tra
The N.S.Stereom) transmission is specified in detail, and the two-way digital broadcasting described in the present invention also conforms to this standard. ST described in the present invention
The C counter 12 is used in the process of decoding the MPEG2 TS and is one of the essential elements for the MPEG2 TS transmission.

This counter is used to synchronize the time of broadcasting program reproduction between the interactive digital television broadcasting facility 1 and the interactive digital receiver 2, and is always calibrated by the signal from the broadcasting station. There is. That is, a certain audio / video and data broadcast is decoded by the reproduction time information and STC included in the audio / video data.
This is when the counter values match.

As an example, a case will be described in which a quiz question is broadcast in a quick-press quiz program in which the viewer participates and the response speed of the responses of the viewer to the quiz is ranked.

From the interactive digital television broadcasting facility 1, quiz question data as the digital TV interactive program data 4 is passed through the program sending means 4 via the satellite or terrestrial broadcasting or CATV to the interactive direction of the viewer's house. Send to digital TV receiver 2. In the interactive digital television receiver 2, after being selected by the channel selection means 8, the MPEG2 decoding means 9 decodes it into audio data, image data and data broadcasting data.

The audio / video and the data broadcast data are decoded when the reproduction time information contained in the audio / video data and the STC counter value match. The audio data is reproduced by the speaker 11 through the audio output means 10. The image data is image output means 13
It is displayed on a CRT (liquid crystal, PDP) through.

The data broadcasting data is converted into audio data by the data broadcasting interpreting means 15, and the audio output means 10
May be entered in. Similarly, data broadcasting data,
It may be converted into image data by the data broadcast interpretation means 15 and input to the image output means 10. According to the contents of the data broadcast, the data broadcast interpreting means 15 displays the operation result of the viewer from the operation button or the remote control input 18 as ST.
Time data created by using the value of the C counter 12 or the value of the STC counter 12 is added, assembled by the sending data assembling means 17 as sending data, and passed through the sending means 16 via a telephone line, CATV (upstream) or the Internet. And transmits it to the interactive digital television broadcasting facility 1.

In the interactive digital television broadcasting facility 1, the receiving means 7 receives the operation result of the viewer and the STC counter value or the time data created using the STC counter value, and the time data extracting and outputting means 6 receives the time data. ST
The value of the time data created by using the value of the C counter 12 or the value of the STC counter 12 is extracted, and the viewer response speed ranking means 5 is used to rank the response speed of the viewer to the quiz question. To do.

(Embodiment 2) FIG. 2 includes an interactive digital television receiver according to claim 4 and an interactive digital television broadcasting facility according to claim 5, in an embodiment of the present invention. It is a figure which shows the characteristic part of this invention. Figure 2
Differs from FIG. 1 in the following two points.

In the interactive digital television receiver 2,
An encryption unit 20 is added between the transmission data assembling unit 17 and the sending unit 16. In the broadcasting facility 1 for interactive digital television, a decoding means 19 is added between the receiving means 7 and the time extracting means 6.

The encryption means 20 and the decryption means 19 are a pair. That is, the content encrypted by the encryption means 20 is decrypted by the decryption means 19.

[0023]

As described above, the interactive digital television receiver of the present invention (Claim 1) has the value of the STC counter of the MPEG2 decoder or the value of the STC counter when the operation is performed according to the operation result of the viewer. The two-way digital television broadcasting facility of the present invention (Claim 2) has a means for adding and transmitting time data created using the value, and sends it by adding it to the operation result of the viewer. The present invention has means for ranking the response speed of the viewer with respect to the broadcast contents by using the value of the STC counter or the time data created using the value of the STC counter, which is provided by the present invention (claim 3 ), The interactive digital television program is operated according to the operation result of the viewer in the interactive digital television receiver according to claim 1 and the broadcasting facility for interactive digital telesystem according to claim 2. STC MPEG2 decoder of
The time value created by using the value of the counter or the value of the STC counter is added, and since it includes a procedure for ranking the response speed of the viewer to the broadcast content from the transmitted result, the bidirectional As a TV program, for example, in a quick-press quiz program in which a viewer participates or in a TV shopping program limited to the first 100 people, the response speed of the viewer can be fairly ranked.

Further, the interactive digital television receiver of the present invention (claim 4) encrypts the data part including the operation result of the viewer and the value of the STC counter or the time data created by using the value of the STC counter. In the interactive digital television broadcasting equipment of the present invention (Claim 5), the time data created by using the operation result of the viewer and the value of the STC counter or the value of the STC counter. As a method of transmitting from the interactive digital television receiver to the interactive digital television broadcasting facility, since it has a means for decrypting the encrypted data portion including
For example, even when it is sent via the Internet or the like, it is possible to greatly reduce the risk of spoofing or falsification on the way of the route.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a characteristic part of the present invention according to claim 1, claim 2 and claim 3 of the present invention.

FIG. 2 is a diagram for explaining the characteristic portions of the present invention according to claim 4 and claim 5 of the present invention.

[Explanation of symbols] 1 Interactive digital TV broadcasting equipment Two-way digital receiver 3 Program transmission means 4 interactive digital TV program data 5 Viewer response speed ranking means 6 time data extraction means 7 Receiving means 8 tuning means 9 MPEG decoding means 10 Audio output means 11 speakers 12 STC counter 13 Image output means 14 CRT (liquid crystal, PDP) 15 Data broadcasting interpretation means 16 sending means 17 Transmission data assembly means 18 Operation button or remote control input 19 Decoding means 20 encryption means

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 7/08 H04N 7/08 Z 7/081 F term (reference) 5C025 CA02 CB10 DA01 5C063 AB07 AC01 CA11 CA23 DA07 DA13 5C064 BB07 BC07 BC17 BC22 BC23 BD02 BD08 CA14 CB01 CC01 CC04

Claims (5)

[Claims] 1. A value of an STC counter or an STC of an MPEG2 decoder when an operation is performed according to an operation result of a viewer.
An interactive digital television receiver having means for adding time data created using a value of a counter and transmitting the time data. 2. The ranking of the response speed of the viewer with respect to the broadcast content, using the value of the STC counter sent in addition to the operation result of the viewer or the time data created using the value of the STC counter. A broadcasting facility for interactive digital television, characterized in that it has means for operating. 3. The bidirectional digital television receiver according to claim 1 and the bidirectional digital telesystem broadcasting equipment according to claim 2, wherein the STC counter of the MPEG2 decoder when an operation is performed according to an operation result of a viewer is performed. Value or S
A two-way digital television program characterized by adding time data created using the value of the TC counter and ranking the response speed of the viewer to the broadcast content from the transmitted result. 4. The interactive digital television receiver according to claim 1, further comprising means for encrypting a data portion including time data created by using the operation result of the viewer and the value of the STC counter or the value of the STC counter. An interactive digital television receiver characterized by having. 5. The interactive digital television broadcasting facility according to claim 2, wherein an encrypted data portion including a result of operation by a viewer and a value of the STC counter or time data created by using the value of the STC counter is transmitted. An interactive digital television broadcasting facility having means for decoding.