JPH09322090A - Electronic catalog display method in digital broadcasting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To retrieve and display the prescribed one in transmission data by adding control data for indicating a product class to electronic catalog data, storing only the one matched with the control data specified by a user in a memory and displaying it. SOLUTION: A comparison part 16 compares the product class detected by a class detection part 15 and the product class specified by the user and sends operation signals to a trigger generation part 17 only when both match. When the operation signals are sent from the comparison part 16, the generation part 17 generates triggers for writing the electronic catalog data sent at present in an image memory 12. When the triggers from the generation part 17 are outputted, the catalog data during transmission to the memory 12 at present are written in the memory 12. The data written in the memory 12 are successively read and sent to a D/A conversion part 13. The data sent to the conversion part 13 are converted to analog image signals and then, supplied to a monitor 14 and displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic catalog display method in a digital broadcasting system such as a digital satellite broadcasting system, a digital terrestrial broadcasting system and a digital cable television broadcasting system.

[0002]

2. Description of the Related Art Attempts have been made to provide electronic catalogs to users by utilizing digital broadcasting such as digital satellite broadcasting. If only the electronic catalog corresponding to the product category or product number desired by the user is displayed among the electronic catalogs provided by digital broadcasting, all the data of the electronic catalog provided by digital broadcasting will be displayed on the user terminal. Generally, a method of storing in a storage device, searching electronic catalog data corresponding to a product category or product number desired by a user from the electronic catalog data stored in the storage device, and displaying the electronic catalog data is displayed.

FIG. 5 shows the configuration of a user-side terminal when an electronic catalog is provided to a user by digital satellite broadcasting using MPEG2.

At the broadcasting station (transmission side), video data, audio data and electronic catalog data of a normal television program are encoded. Then, after the encoded signals are multiplexed, they are modulated and output from the antenna. The signal output from the antenna is sent to the user side terminal (reception side) via the communication satellite.

In the user terminal, the tuner 101 selects a signal in the frequency band of the channel corresponding to the program selected by the user from the received signals. The selected signal is the digital demodulator 1
Demodulated by 02. The signal obtained by the digital demodulator 102 is sent to the error correction unit 103 and subjected to error correction processing. The signal after this error correction processing is sent to the transport decoder 104.

[0006] The transport decoder 104 extracts a packet corresponding to the program selected by the user. Then, the video data in the extracted packet is decoded by the video decoder 105 and then sent to the receiver 108 having the electronic catalog search function. The audio data in the extracted packet is decoded by the audio decoder 106 and then sent to the receiver 108. The electronic catalog data in the extracted packet is decoded by the data decoder 107 and then stored in the hard disk 110 in the receiver 108.

From the electronic catalog data stored in the hard disk 110, electronic catalog data corresponding to the product category or product number desired by the user is retrieved and displayed on the monitor.

[0008]

In the above-mentioned conventional method, all the electronic catalog data sent by digital broadcasting must be stored in a storage device such as a hard disk. There is a problem that is required.

According to the present invention, even if not all of the electronic catalog data sent from the sending side is stored in the storage device at the receiving side, the receiving side can select a predetermined amount from the electronic catalog data sent from the sending side. An object of the present invention is to provide an electronic catalog display method in a digital broadcasting system that can search for and display items.

[0010]

According to a first aspect of the present invention, there is provided a method of displaying an electronic catalog in a digital broadcasting system, in which an electronic catalog data set having the same content including a plurality of electronic catalog data is repeatedly transmitted from a transmitting side. In the electronic catalog display method in the system, control data indicating the product category is added to each electronic catalog data included in the electronic catalog data set, and the receiving side receives the electronic catalog data sent from the sending side. Each time, the product category represented by the control data added to the electronic catalog data is compared with the product category specified by the user, and only the electronic catalog data in which both match is stored in the memory. It is characterized by displaying on a display device.

It is preferable to create the electronic catalog data set so that the electronic catalog data of the products belonging to the same product category appear periodically in the electronic catalog data set.

According to the electronic catalog display method in the first digital broadcasting system of the present invention, even if all electronic catalogs in the electronic catalog data set sent from the transmission side are not stored in the storage device on the reception side,
On the receiving side, only the electronic catalog of products belonging to the product category designated by the user can be searched from the electronic catalog data set sent from the transmitting side and displayed.

An electronic catalog display method in a second digital broadcasting system according to the present invention is an electronic catalog display method in a digital broadcasting system in which an electronic catalog data set of the same content including a plurality of electronic catalog data is repeatedly sent from a transmitting side. In the above, control data indicating a product number is added to each electronic catalog data included in the electronic catalog data set, and the electronic catalog data sent from the sending side is received by the receiving side each time the electronic catalog data is received. The product number represented by the control data added to the catalog data,
It is characterized in that the product number specified by the user is compared, and only the electronic catalog data which both match is stored in the memory and displayed on the display device.

According to the electronic catalog display method in the second digital broadcasting system of the present invention, even if all electronic catalogs in the electronic catalog data set sent from the transmitting side are not stored in the storage device on the receiving side,
The receiving side can search and display only the electronic catalog of the product having the product number designated by the user from the electronic catalog data set sent from the transmitting side.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention applied to digital satellite broadcasting will be described below.

[1] Description of First Embodiment

First, a first embodiment will be described with reference to FIGS.

FIG. 1 shows the structure of an electronic catalog data set sent from a broadcasting station.

From the broadcasting station, the electronic catalog data set Q having the same content including a plurality of electronic catalog data is repeatedly transmitted. Control data 1 is added to each electronic catalog data 2 included in the electronic catalog data set Q. Each electronic catalog data is composed of image data.

The control data 1 is data α, β, γ, η indicating the product category (category) of the target product in the electronic catalog.
It is. In this example, there are four types of product categories of the target product in the electronic catalog: a television (TV), a video tape recorder (VTR), a telephone (TEL), and a CD player (CD).

The electronic catalog data set Q is created so that, in the electronic catalog data set Q, electronic catalog data of products belonging to the same product category appear periodically. That is, the electronic catalog data set Q is composed of a plurality of sets of data sets q1 to qn each including four pieces of electronic catalog data. In each of the data sets q1 to qn, the television (T
V), video tape recorder (VTR), telephone (TE
The four electronic catalog data are arranged in the order of L) and the CD player (CD). FIG. 2 shows the configuration of the electronic catalog display control unit provided in the receiver of the user side terminal.

The user designates the product category of the electronic catalog to be searched by an operation unit (not shown). The classification data representing the product classification designated by the user is the comparison unit 1
6 is input.

The data sent from the data decoder (see 107 in FIG. 5) to the receiver is separated by the image data / control data separating section 11 into image data (electronic catalog data) and control data. The electronic catalog data is sent to the image memory 12. The control data is sent to the classification detection unit 15. The classification detection unit 15 detects the product classification of the electronic catalog data sent to the image memory 12 based on the sent control data, and sends the data representing the detected product classification to the comparison unit 16.

The comparison unit 16 compares the product classification detected by the classification detection unit 15 with the product classification specified by the user, and sends an operation signal to the trigger generation unit 17 only when the two match. The trigger generation unit 17 includes the comparison unit 1
When the operation signal is sent from 6, the trigger for writing the electronic catalog data currently sent to the image memory 12 is generated.

When a trigger is output from the trigger generator 17, the electronic catalog data currently sent to the image memory 12 is written in the image memory 12. The electronic catalog data written in the image memory 12 is sequentially read and sent to the D / A conversion unit 13. D / A converter 1
The electronic catalog data sent to the D.A.
After being converted into an analog image signal by the monitor 1,
4 is supplied. Therefore, the catalog image corresponding to the electronic catalog data is displayed on the monitor 14 as a still image.

That is, of the electronic catalog data included in the electronic catalog data set sent from the broadcasting station, only the electronic catalog data of the products belonging to the product category designated by the user is displayed on the monitor 14. As described with reference to FIG. 1, the electronic catalog data set Q is created so that the electronic catalog data of products belonging to the same product category appear periodically in the electronic catalog data set Q. The electronic catalog data of the products belonging to the specified product category is displayed on the monitor 14 while browsing at a substantially constant speed.

When a predetermined still image is displayed on the monitor 14 and the user inputs a stop command through the operation unit, a STOP signal is sent to the trigger generation unit 17 and the trigger generation is prohibited. That is, the writing of new electronic catalog data to the image memory 12 is prohibited. As a result, the still image currently displayed on the monitor 14 is continuously displayed.

In the first embodiment, the electronic catalog data set is created so that the electronic catalog data of the products belonging to the same product category appear periodically in the electronic catalog data set. It is not necessary to create the electronic catalog data set so that the electronic catalog data of the products belonging to the item appears periodically.

According to the first embodiment, the electronic catalog data set in the electronic catalog data set sent from the broadcasting station does not have to be stored in the storage device but belongs to the product category specified by the user. Only the electronic catalog data of the product can be searched and displayed from the electronic catalog data set sent from the broadcasting station. Therefore, it is not necessary to provide the user-side terminal with a large-capacity storage device capable of storing all the electronic catalog data in the electronic catalog data set sent from the broadcasting station.

[2] Description of Second Embodiment

The second embodiment will be described with reference to FIGS. 3 and 4.

FIG. 3 shows the structure of an electronic catalog data set sent from a broadcasting station.

From the broadcasting station, the electronic catalog data set Q having the same content is repeatedly transmitted. Each electronic catalog data 2 included in the electronic catalog data set Q
Is added with control data 1. Each electronic catalog data is composed of image data Ki. The control data 1 is data Ni indicating the product number of the target product in the electronic catalog.

The user specifies the product number of the electronic catalog to be searched by using the operation unit (not shown). The product number data representing the product number designated by the user is input to the comparison unit 26.

The data sent from the data decoder (see 107 in FIG. 5) to the receiver is classified by the image data / control data separation unit 21 into image data (electronic catalog data) Ki and control data Ni. It The electronic catalog data is sent to the image memory 22. The control data is sent to the product number detection unit 25. Product number detector 2
5 is an image memory 2 based on the transmitted control data.
2, the product number of the electronic catalog data sent to the electronic catalog data is detected, and the data representing the detected product number is sent to the comparison unit 26.

The comparison unit 26 compares the product number detected by the product number detection unit 25 with the product number designated by the user, and sends an actuation signal to the trigger generation unit 27 only when both match. When the trigger generator 27 receives the operation signal from the comparator 26, the trigger generator 27 receives the image memory 22.
Generate a trigger to write the electronic catalog data currently sent to.

When a trigger is output from the trigger generator 27, the electronic catalog data currently sent to the image memory 22 is written in the image memory 22. The electronic catalog data written in the image memory 22 is sequentially read and sent to the D / A converter 23. D / A converter 2
The electronic catalog data sent to the D.A.
After being converted into an analog image signal by the monitor 2,
4 is supplied. Therefore, the catalog image corresponding to the electronic catalog data is displayed on the monitor 24 as a still image.

That is, of the electronic catalog data included in the electronic catalog data set sent from the broadcasting station, only the electronic catalog data of the product having the product number designated by the user is displayed on the monitor 24.

According to the second embodiment, the product number designated by the user is stored even if all the electronic catalog data in the electronic catalog data set sent from the broadcasting station is not stored in the storage device. Only the electronic catalog data of the product can be searched and displayed from the electronic catalog data set sent from the broadcasting station.
Therefore, it is not necessary to provide the user-side terminal with a large-capacity storage device capable of storing all the electronic catalog data in the electronic catalog data set sent from the broadcasting station.

[0040]

According to the present invention, even if not all of the electronic catalog data sent from the sending side is stored in the storage device at the receiving side, the receiving side can store the electronic catalog data sent from the sending side. It becomes possible to search for and display a predetermined one.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of an electronic catalog data set transmitted from a broadcasting station.

FIG. 2 is a block diagram showing a configuration of an electronic catalog display control unit provided in a receiver of a user side terminal.

FIG. 3 is a schematic diagram showing a configuration of an electronic catalog data set transmitted from a broadcasting station.

FIG. 4 is a block diagram showing a configuration of an electronic catalog display control unit provided in a receiver of a user side terminal.

FIG. 5 is a block diagram showing a configuration of a user-side terminal when an electronic catalog is provided to a user by digital satellite broadcasting using MPEG2.

[Explanation of symbols]

 11, 21 Image data / control data separation unit 12, 22 Image memory 13, 23 D / A conversion unit 14, 24 Monitor 15 Classification detection unit 16, 26 Comparison unit 17, 27 Trigger generation unit 25 Product number detection unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuji Kaneda 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. An electronic catalog display method in a digital broadcasting system in which an electronic catalog data set of the same content including a plurality of electronic catalog data is repeatedly transmitted from a transmitting side, each electronic catalog included in the electronic catalog data set. Control data indicating the product classification is added to the data, and each time the receiving side receives the electronic catalog data sent from the sending side, it is expressed by the control data added to the electronic catalog data. A method for displaying an electronic catalog in a digital broadcasting system, characterized in that a product classification is compared with a product classification designated by a user, and only the electronic catalog data that matches the two is stored in a memory and displayed on a display device. 2. In the electronic catalog data set,
The electronic catalog display method in a digital broadcasting system according to claim 1, wherein the electronic catalog data set is created so that the electronic catalog data of the products belonging to the same product category appear periodically. 3. An electronic catalog display method in a digital broadcasting system in which an electronic catalog data set having the same content including a plurality of electronic catalog data is repeatedly sent from a transmitting side, each electronic catalog included in the electronic catalog data set. Control data representing the product number is added to the data, and each time the receiving side receives the electronic catalog data sent from the sending side, it is represented by the control data added to the electronic catalog data. An electronic catalog display method in a digital broadcasting system, characterized in that a product number and a product number designated by a user are compared, and only the electronic catalog data that matches the two is stored in a memory and displayed on a display device.