JP2001275102A - Digital television broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital television broadcast receiver by which a user can easily revise its contract status. SOLUTION: The digital television broadcast receiver is provided with an entry means that enters contract revision information to revise the contract by a user and a means that transmits the contract revision information entered by the entry means to company center.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a digital television broadcast receiver.

[0002]

2. Description of the Related Art When receiving a digital broadcast, a user makes a contract with a broadcaster. There are various forms of this contract. Further, the user can change the contract form.

When a user offers a change in the contract form to a broadcasting company, new contract information is transmitted by radio waves as data called EMM. The receiver side receives the EMM and stores new contract information included in the EMM into a contract information table (Conditional table) in the IC card.
Access section), the renewal of the contract form is completed.

Conventionally, when a user changes the contract form, the user calls the broadcaster to apply for the change of the contract form, and then sets the receiving state until the EMM is sent. I had to wait. However, it is not known when the EMM will be sent, so even if the user turns off the power, the receiver will always
It was necessary to be able to receive MM.

[0005] For this reason, the power consumption is very small when the user is watching the program (when the receiver is turned on) and when the user is not watching the program (when the receiver is turned off). Did not change.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a digital television broadcast receiver which allows a user to easily change a contract form.

An object of the present invention is to provide a digital television broadcast receiver capable of reducing power consumption.

[0008]

A first digital television broadcast receiver according to the present invention comprises: input means for allowing a user to input contract form change information for changing a contract form; and a contract form inputted by the input means. A means for transmitting change information to a business center is provided.

A second digital television broadcast receiver according to the present invention is a digital broadcast receiver whose power supply to a digital broadcast receiving circuit is basically stopped when the power of the receiver is off. Means for inputting contract form change information for causing a user who receives broadcast to change the contract form, means for transmitting contract form change information input by the input means to a business center, Means for receiving the scheduled transmission time data of the new contract form information transmitted from the business center when transmitting to the center and storing the data in the storage device, and storing the data in the storage means when the power of the receiver is off Means for turning on the power supply to the digital broadcast receiving circuit when the time immediately before the scheduled transmission time has been reached, and the power of the receiver is off. Means for stopping power supply to the digital broadcast receiving circuit when the new contract form information is received and stored in the IC card when the power supply to the digital broadcast receiving circuit is on. It is characterized by having.

[0010]

Embodiments of the present invention will be described below.

FIG. 1 shows the configuration of a digital television broadcast receiver.

A broadcast wave is sent to a tuner 1 via an antenna, where high-frequency processing and demodulation are performed. Tuner 1
Output from the transport stream separation unit (hereinafter,
2 (referred to as a TS separation unit), and the packet is decoded.

In the TS separation unit 2, the packet is
It is separated into EG data and program guide information and auxiliary information such as EMM. MPEG separated by TS separation unit 2
The video data is sent to the video processing unit 5. TS separation unit 2
The MPEG audio data separated by the above is sent to the audio processing unit 6. The attached information separated by the TS separation unit 2 is stored in the memory 3.

The second CPU 16 includes a remote control transmitter 15
Is input via a remote control light receiver (not shown). The second CPU 16 has a memory 17. The remote control signal input to the second CPU 16
It is sent to the CPU 10.

The first CPU 10 includes a tuner 1 and a TS
Information for channel selection and the like are sent to the separation unit 2. Also, the first CP
U10 sends an OSD control signal for on-screen display of a program guide screen, various setting screens, and the like to the on-screen generation unit 4. The on-screen generation unit 4 generates display data of various setting screens and sends the display data to the multiplexer 7.

The first CPU 10 has a nonvolatile memory 14. The first CPU 10 is connected to a telephone line 12 via a modem 11.

The video processing unit 5 demodulates the MPEG video data sent from the TS separation unit 2 and
Send to The multiplexer 7 superimposes the display data sent from the on-screen generation unit 4 on the video data output from the video processing unit 5, and sends it to the video output terminal 8.

The audio processing section 6 demodulates the MPEG audio data sent from the TS separation section 2 and sends it to the audio output terminal 9.

The first CPU 10 manages reception of digital television broadcasts, acquires and manages data, presents images, and the like. The second CPU 16 receives a remote control signal and performs power management. In other words, the second CPU 16
It manages power supply to circuits such as the PU 10, tuner 1, TS separation unit 2, memory 3, on-screen generation unit 4, video processing unit 5, audio processing unit 6, and modem 11.

In this embodiment, power is supplied to the second CPU 16 and the memory 17 even when the power is off. In other circuits, power is supplied in principle when the power is turned on, but is not supplied when the power is turned off. However, as described later, even when the power is turned off,
For a certain period of time for acquiring the EMM, the second CPU 16
Power is supplied to circuits other than the memory 17.

This digital broadcast receiver has a function of acquiring contract form information when the power is turned on, a function of displaying current contract form information in response to a command from the user, a function of allowing the user to change the contract form, Transmits contract change information to the broadcaster's viewer management center (business center) when the contract type is changed,
A function is provided for acquiring the time at which the EMM corresponding to the contract mode change is transmitted.

This digital broadcast receiver monitors the time at which the EMM is transmitted when the power is turned off, and automatically turns on the power when the scheduled transmission time comes, thereby turning on the EM.
A function for acquiring M is provided.

FIG. 2 shows the first CPU 1 when the power is turned on.
0 shows the procedure for acquiring the contract form information executed by the process 0.

First, a contract form information acquisition command is transmitted to the TS separation section 2 (step 1). Upon receiving this command, the TS separation unit 2 performs a process for obtaining the contract type information included in the SI information. When the contract form information is sent from the TS separation unit 2, that is, when the contract form information can be acquired (YES in step 2), the acquired contract form information is stored in the memory 3 (step 3).

FIG. 3 shows a procedure for displaying contract form information executed by the first CPU 10 based on a contract form information display command from the user when the power is turned on.

When a contract mode information display command is input from the user (YES in step 11), it is determined whether or not the contract information is held in memory 3 (step 1).
2). If the contract information is held in the memory 3, the contract information held in the memory 3 is displayed (step 14).

If the contract information is not stored in the memory 3 in the above step 12, the contract form information acquiring process shown in FIG. 2 is executed (step 13), and the contract information stored in the memory 3 is displayed (step 13). 14).

FIG. 4 shows a contract form change processing procedure executed by the first CPU 10 based on a contract form change command from a user when contract form information is displayed.

When the contract form information is displayed and a contract form change command is input from the user (YES in step 21), the user is confirmed (step 22). That is, an input confirmation screen for prompting the user to input a password registered in advance by the user is displayed. Then, when the user inputs the personal identification number, it is determined whether or not the previously registered personal identification number matches the input personal identification number. Only when both match, the process proceeds to step S23.

In step 23, a contract form change screen is displayed. The user makes an input for changing the contract form on this contract form change screen. When the input for changing the contract form is completed (YES in step 24),
The contract form change information is transmitted to the viewer center via the modem 11 (step 25).

When the viewer center receives the contract form change information, the viewer center determines the scheduled transmission time of the EMM including the new contract form information according to the contract form change information, and determines the determined EMM.
Is transmitted to the first CPU 10.

When the EMM transmission scheduled time is received after transmitting the contract form change information in the above step 25 (YES in step 26), the received EMM transmission scheduled time data is stored in the nonvolatile memory 14 (step 25). 2
7). In addition, the transmission scheduled time data of the received EMM is sent to the second CPU 16. (Step 28). 2nd CPU1
6 stores in the memory 17 the transmitted transmission scheduled time data of the EMM.

FIG. 5 shows an EMM performed by the first CPU 10 when power is supplied to the first CPU 10.
4 shows an acquisition processing procedure.

When power is supplied, the first CPU 10 stores the EMM stored in the nonvolatile memory 14.
It is monitored whether it is just before the scheduled transmission time (step 31). If it is immediately before the scheduled EMM transmission time, a first EMM acquisition command is transmitted to the TS separation unit 2 and a first EMM acquisition operation is stored.
The flag F1 is set (F1 = 1) (Step 3)
2). When the TS separation unit 2 receives this command, the TS separation unit 2
Perform processing for acquiring

When the EMM is sent from the TS separation unit 2, that is, when the EMM can be obtained (Y in step 33).
ES), and stores the obtained EMM in the IC card 13 (step 34). Thereby, the contract form information stored in the IC card 13 is updated to the new contract form information. After this, the completion of the update of the contract type information is
The first flag F1 for notifying the CPU 16 and storing that the EMM acquisition operation is being performed is reset (F1
= 0) (step 35).

FIG. 6 shows a power management process performed by the second CPU 16.

When power is not supplied to circuits other than the second CPU 16 and the memory 17 (hereinafter referred to as other circuits), the second CPU 16 determines whether or not a power-on command has been input from the remote controller (step 41). , And whether the current time is immediately before the scheduled EMM transmission time stored in the memory 17 (step 43).

When a power-on command is input from the remote controller (YES in step 41) or when the current time is set to EMM
If it is just before the scheduled transmission time (YE in step 43)
In S), power is supplied to another circuit (step 4).
4). However, when a power-on command is input from the remote controller (YES in step 41), after the second flag F2 for storing that power is supplied based on the remote control command is set (F2 = 1). (Step 4
2) Power is supplied to other circuits (step 44).

While power is being supplied to the other circuits, the second CPU 16 determines whether or not a power-off command has been input from the remote controller (step 45), and that the update of the contract form information has been completed. It is monitored whether or not a notification has been received from the 1CPU 10 (step 48).

If a power-off command is input from the remote controller (YES in step 45), the second flag F2 is reset (F2 = 0) (step 46), and then the first flag F1 is set. It is determined whether or not it has been performed (step 47). If the first flag F1 is not set (F1 = 0), the supply of power to other circuits is stopped (step 50). Then, the process returns to step 41.

In step 47, when the first flag F1 is set (F1 = 1), it is determined that the EMM acquisition operation is being performed, and the power supply to other circuits is not stopped. Go to step 48.

The completion of the update of the contract form information is first.
When notified by the CPU 10 (YE in step 48)
In S), it is determined whether the second flag F2 has been reset (step 49). If the second flag F2 is reset (F2 = 0), the power supply to another circuit is stopped because the power is not on by the remote control command (step 50). And step 41
Return to

In step 49, when the second flag F2 is set (F2 = 1), it is determined that the power-on state by the remote control command is continued, and the supply of power to other circuits is performed. The process returns to step 41 without stopping.

When the power of the receiver is off and no power is supplied to the other circuits, if the current time is immediately before the scheduled EMM transmission time held in the memory 17, another time is set. Rather than supplying power to the entire circuit, a receiving circuit required to receive the EMM and store it in the IC card 13 (in this example, the first CPU 10, tuner 1, TS separation unit 2, memory 3, and IC card 1)
Power may be supplied only to 3).

[0045]

According to the present invention, the user can easily change the contract form. Further, according to the present invention, the power consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a digital television broadcast receiver.

FIG. 2 is a flowchart showing a contract form information acquisition processing procedure executed by a first CPU 10 when the power is turned on.

FIG. 3 is a flowchart showing a contract form information display processing procedure executed by a first CPU 10 based on a contract form information display command from a user when the power is turned on.

FIG. 4 When contract type information is displayed,
First CPU 1 based on a contract form change command from the user
9 is a flowchart showing a contract form change processing procedure executed by the process of step 0.

FIG. 5 is a flowchart illustrating an EMM acquisition processing procedure performed by the first CPU 10 when power is supplied to the first CPU 10;

FIG. 6 is a flowchart illustrating a power management processing procedure performed by a second CPU 16;

[Explanation of symbols]

 Reference Signs List 1 Tuner 2 TS separation unit 3 Memory 4 On-screen generation unit 10 First CPU 11 Modem 13 IC card 14 Non-volatile memory 15 Remote control 16 Second CPU 17 Memory

Claims (2)

[Claims] 1. A digital television comprising: input means for allowing a user to input contract form change information for changing a contract form; and means for transmitting contract form change information input by the input means to a business center. Broadcast receiver. 2. A digital broadcast receiver in which power supply to a digital broadcast receiving circuit is stopped in principle when the power of the receiver is off, and a contract form is changed to a user who receives the broadcast. Input means for inputting contract form change information for causing the contract form change information input by the input means to be transmitted to the service provider center; transmitted from the service center when the contract form change information is transmitted to the service center. Means for receiving the scheduled transmission time data of the new contract type information and storing the data in the storage device. When the power of the receiver is turned off, the time immediately before the scheduled transmission time stored in the storage means becomes short. Means for turning on the power supply to the digital broadcast receiving circuit when the power supply of the receiver is off and the power supply to the digital broadcast receiving circuit is on. If it is, when the new contract information is stored in the received by the IC card,
Means for stopping the supply of power to the digital broadcast receiving circuit.