JP3296786B2 - Television receiver with built-in digital broadcast receiver and method of reducing power consumption in television receiver with built-in digital broadcast receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver with a built-in digital broadcast receiver and a method for reducing power consumption in a television receiver with a built-in digital broadcast receiver.

[0002]

2. Description of the Related Art In digital broadcasting including pay broadcasting, qualification data for each user (for example, individual information (EM)
M)) has been transmitted. The qualification grant data includes data (contract information) indicating a channel (program) that can be viewed by the user specified by the contract,
It includes key data for descrambling and the like, and is transmitted together with the user ID. Individual-specific information (qualification
The attached data) is used to determine whether or not the program is viewable by the user, to cancel the scramble, and the like. Therefore, the power of the television receiver with a built-in digital broadcast receiver is turned off. At times, it is necessary to be in a state where qualification data can be obtained.

For this reason, in a conventional television receiver with a built-in digital broadcast receiver, it is necessary to supply power to a circuit for acquiring qualification data even when the power is off, and power consumption is reduced. There is a problem of increasing.

[0004]

SUMMARY OF THE INVENTION The present invention provides a television receiver with a built-in digital broadcast receiver and a method for reducing power consumption in a television receiver with a built-in digital broadcast receiver, which can reduce power consumption. The purpose is to:

[0005]

SUMMARY OF THE INVENTION In a television receiver with a built-in digital broadcast receiver according to the present invention, subscribers of a broadcast service are divided into a plurality of groups, and each subscriber has an ID number assigned to each subscriber. information indicating whether belong to any group and is assigned, the broadcaster side smell
Transmission time period of entitlement data for each group Te it is predetermined, with entitlement data transmission time period defined pre <br/> Me In broadcaster side for each group is transmitted , Qualification for each group and each group
Information that indicates the relationship with the time zone when the data is sent is generally
A television receiver of the digital broadcast receiver built transmitted with a predetermined period information, Yu of the receiver
The group to which the user of the receiver belongs is determined based on the ID number of the receiver and included in the received general information.
Qualification day for each group and each group
Based on information that describes the relationship to the
Determining means for determining the transmission time zone of the qualification data to the group to which the user of the receiver belongs ; and, when the power supply is off, when the transmission time zone of the qualification data to the group to which the user of the receiver belongs is not the qualification The power of the circuits necessary for acquiring the qualification data is also turned off when the time period for transmitting the qualification data to the group to which the user of the receiver belongs is turned off. Is provided with control means for turning on.

[0006]

[0007] In the method for reducing power consumption in a television receiver with a built-in digital broadcast receiver according to the present invention, subscribers of a broadcast service are divided into a plurality of groups, and each subscriber has an ID number assigned to each subscriber. information indicating whether belong to any group and is assigned, broadcasters
The transmission time zone of the qualification data is predetermined for each group on the side of the broadcaster, and the broadcaster is set for each group.
The qualification data is transmitted during a predetermined transmission time period on the side, and each group and each group
Shows the relationship to the time when the entitlement data
A method for reducing power consumption in a television receiver with a built-in digital broadcast receiver in which information is transmitted at predetermined intervals as general information , wherein the method is based on an ID number of a user of the receiver. The group to which the user of the receiver belongs is determined, and each group included in the received general information is determined .
Entitlement data for the loop and each group is sent
Based on the information indicating the relationship with the
A first step of determining the transmission time zone of the entitlement data to the group to which the user belongs, and acquiring the entitlement data if the power off time is not the transmission time zone of the entitlement data to the group to which the user of the receiver belongs The power of the circuits necessary for acquiring the qualification data is also turned off during the transmission time period of the qualification data to the group to which the user of the receiver belongs, in the power supply of the circuits necessary to perform the operation. Second
It is characterized by having steps.

[0008]

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

First, the transmission process of the qualification data by the transmitting device will be described. Broadcast service subscribers
It is managed by the broadcaster by the ID number. Broadcasters divide subscribers into groups. For convenience of explanation, here, the subscribers are divided into ten groups G0-G.
9 is assumed. Assuming that the ID number of each subscriber is a decimal number, group numbers 0 to 9 are assigned to the last digit.

[0011] The transmission time zone of the qualification data is determined in advance for each group. For example, one hour equals 6
It is divided into ten time zones T0 to T9 every minute. And
The time zones T0 to T9 at the respective times (0:00 to 24:00) are assigned as transmission time zones of the entitlement data corresponding to the groups G0 to G9, respectively.

Therefore, for example, at each time (0:00 to 2
4 o'clock), the subscribers belonging to the first group G0, that is, 1
Entitlement data for the subscriber whose digit is 0 is sent.

In this embodiment, information indicating the relationship between each group G0 to G9 and the time zone T0 to T9 in which the qualification data for each group is transmitted is as follows:
It is assumed that the general information is transmitted at a predetermined cycle.

FIG. 1 shows the configuration of a television receiver having a built-in digital broadcast receiver.

The digital receiving section includes a tuner unit 1,
It includes a descrambler 2, a demultiplexer (packet separator) 3, a video / audio decoder 4, and the like. These components are controlled by the CPU 10.

The CPU 10 has a real timer block (RTC) 11 for acquiring time. CPU
Reference numeral 10 denotes a switch 21 for supplying power from the power supply circuit 20 to a block 31 necessary for acquiring qualification data including the tuner unit 1, the descrambler 2, and the demultiplexer 3, and the video / audio decoder 4 and the like. A switch 22 for supplying power from the power supply circuit 20 to a block 32 that is not necessary for obtaining the qualification data is controlled.

A power supply circuit 20 constantly supplies power to a block 33 including the CPU 10 and the RTC 11. When the power is turned on, the CPU 10 turns on both the switch 21 and the switch 22. When the power is off,
In principle, the CPU 10 turns off both the switch 21 and the switch 22. However, as described later, even when the power is off, it is necessary to turn on the switch 21 and acquire the entitlement data during the time period when the entitlement data for the user of the receiver is transmitted. Power is supplied to the main block 31.

The tuner unit 1 comprises a tuner, an IQ detector, a QPSK demodulator, and an error corrector. After selecting a desired wave and converting an input signal to baseband, the tuner unit 1 performs demodulation and error correction processing. Output a packet.

When a pay broadcast is received, the descrambler 2 descrambles the TS packet of the corresponding program using the descramble key. The descramble key is IC
The data is output from the main CPU 10 with reference to the qualification data stored in the card 12.

The TS packet contains video, audio information and service information (SI: Service Information) of a plurality of programs. The service information includes general information (program information for a program guide, each group G0 to G9, and a time zone T0 to which qualification data for each group is transmitted).
T9) and individual information (such as qualification data). The demultiplex 3 has the CPU 10
Then, only the designated TS packet is separated, the video / audio packet is output to the video / audio decoder 4, and the SI packet is loaded into a memory (not shown). The video and audio packets are restored by the video and audio decoder 4 and output.

The CPU 10 reads the SI loaded in the memory.
After extracting necessary information in the packet and creating screen data such as a program guide, a user interface screen is displayed via an OSD circuit (not shown). Also, CPU
Reference numeral 10 causes the IC card 12 to store the qualification data loaded in the memory.

The IC card 12 stores charging information and qualification data (including contract information and key data), and periodically uploads the information to a broadcasting company center via a modem (not shown). I do.

Conventionally, even when the power is off,
In addition to the CPU 10, power is always supplied to the blocks 31 (the tuner unit 1, the descrambler 2, and the demultiplexer 3) required for acquiring the qualification data. In, power is supplied to the block 31 only during a time period necessary for acquiring the qualification data.

That is, based on the last digit of the ID number stored in the IC card 12, the CPU 10 determines the group to which the user of the receiver belongs. Each group G0 to G9 received and held as general information, and a time zone T0 during which qualification data for each group is transmitted
Based on the information indicating the relationship with T9, the time zone in which the qualification data for the group to which the user of the receiver belongs belongs is determined.

Then, a real timer block (RTC)
The time zone is monitored by 11 and when the time zone is reached, the switch 21 is turned on even when the power is off. That is, in the time zone in which the qualification data for the user of the receiver is transmitted, the CPU 10 executes the block 31 necessary for obtaining the qualification data including the tuner unit 1, the descrambler 2, and the demultiplexer 3. Is supplied with power from the power supply circuit 20.

Therefore, when the power supply is turned off, the power of the block 31 necessary for acquiring the qualification data is turned on only during the time period in which the qualification data for the user of the receiver is transmitted. The power consumption of the block 31 necessary for obtaining the application data can be reduced as compared with the conventional example in which the power supply of the block 31 is always on when the power supply is off.

Since the transmitting apparatus generally transmits time information as general information at a predetermined cycle, every time the power of the receiver is turned on, the transmitting apparatus obtains the time information and obtains a real timer block (RTC). It is preferable to set 11 to the time obtained from the time information.

The groups G0 to G9 and the time zones T0 to T9 during which the qualification data for each group are transmitted.
The information indicating the relationship with 9 may be stored in the storage device of the receiver in advance.

[0029]

According to the present invention, power consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a television receiver with a built-in digital broadcast receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tuner unit 2 Descrambler 3 Demultiplex 4 Video / audio decoder 10 CPU 11 RTC 12 IC card 20 Power supply circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 7/10 H04N ⁷ /14-7/173 H04N 7/20-7/22 H04N 5/50-5 / 63

Claims (2)

(57) [Claims] 1. A subscriber of the broadcast service is divided into a plurality of groups, and the subscriber ID number of each subscriber is assigned information indicating which belongs to any group, the broadcaster side In each of the groups, the transmission time period of the qualification data is predetermined for each group. The qualification data is transmitted in the predetermined transmission time period on the broadcaster side for each group, and
And the time at which entitlement data is sent for each group
Information indicating the relationship with the band is transmitted at regular intervals as general information
A digital broadcast receiver built in a television receiver coming being, as well as determine the group to which the user belongs of the receiver based on the user's ID number of the receiver, the received
Each group and each group included in the general information
That represents the relationship to the time period during which the entitlement data
Means for determining the transmission time zone of the qualification data to the group to which the user of the receiver belongs, based on the information , and when the power is off, the transmission time zone of the qualification data to the group to which the user of the receiver belongs If it is not, the power of the circuits necessary for acquiring the qualification data is also turned off, and when it is the transmission time period of the qualification data to the group to which the user of the receiver belongs, it is necessary to obtain the qualification data. A television receiver with a built-in digital broadcast receiver, comprising: control means for turning on power of a necessary circuit. 2. A broadcasting service comprising a plurality of subscribers.
And each subscriber's ID number is
Information indicating to which group it belongs is assigned.
Qualifications for each group on the broadcaster side
The data transmission time period is predetermined, and each group
In the transmission time zone predetermined by the broadcaster for each
As the entitlement data is sent, each group
And the time at which entitlement data is sent for each group
Information indicating the relationship with the band is transmitted at regular intervals as general information
TV receiver with built-in digital broadcast receiver
A method for reducing power consumption in a television receiver, comprising the steps of:
Determine the group to which the user belongs and receive
Each group and each group included in the general information
That represents the relationship to the time period during which the entitlement data
The group to which the user of the receiver belongs
First Step of Determining Transmission Time Zone of Entitlement Data
When the power is turned off and the power is turned off,
When sending entitlement data to the group to which the user belongs
If you are not in the middle of the day, you need to
Turn off the power of the necessary circuits, and let the user of the receiver
At the time of sending entitlement data to the group
At times, the number of times required to obtain entitlement data
A method for reducing power consumption in a television receiver with a built- in digital broadcast receiver , comprising a second step of turning on a power supply of a road .