JP2000184441A - Cordless telephone system and broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the equipment by which data communication must be made easily and excellently connectable by using a telephone line. SOLUTION: In this cordless telephone system composed of a master set 35 connected to a telephone line, slave sets 20 which make radio communication with the master set 35 and can make voice conversations, and charging bases 40 for the slave sets 20, an input terminal 41 for inputting data transmitted from the outside is provided to each charging base 40 so that the data inputted to the terminal 41 may be sent out from the slave set 20 to the telephone line through the master set 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone apparatus suitable for connection to a receiving apparatus for receiving a digital broadcasting system for transmitting multimedia data such as image signals and audio signals using a communication satellite. The present invention relates to a broadcast receiving device connected to a telephone device.

[0002]

2. Description of the Related Art Conventionally, as a device for receiving a digital satellite broadcast transmitted from a communication satellite, a receiving device 51 called an IRD (Integrated Receiver and Decoder) as shown in FIG. 7 has been used.

The configuration of the receiving device 51 is such that a radio wave from a communication satellite (or a broadcasting satellite) is received, a received signal is down-converted into an IF (intermediate frequency) signal of a predetermined frequency by a built-in converter, and output. Antenna 52 is connected. From the antenna 52 to the receiving device 51
Is supplied to the front end 53, where demodulation and error correction are performed to obtain a transport stream output. The transport stream output from the front end 53 is transmitted to a descrambler 54.
Then, a descrambling process for descrambling the digital satellite broadcast data is performed, and MPEG2 (Moving
Output the transport stream of Pictures Expert Group 2).

[0004] Scramble processing of digital satellite broadcast data is required to realize conditional access used to control whether or not viewing is possible for each viewer. For example, it is possible to make a contract for Pay Per View in which only a certain program is viewed for a fee each time. Note that the descrambling information (key for descrambling) required for descrambling by the descrambler 54 is inserted into the transport stream as one of the packets, like the video / audio information.

[0005] The front end 53 is not shown,
A tuner for selecting a desired transponder from transponders mounted on a communication satellite (or a broadcasting satellite), a demodulation circuit for performing QPSK demodulation (Quadrature Phase Shift Keying) of the transponder signal selected by the tuner, An error correction circuit for subjecting the QPSK demodulated signal to error correction processing and outputting a transport stream.

[0006] The receiving device 51 includes a descrambler 5.
4 is provided with a demultiplexer (DE-MUX) 55 to which an MPEG-2 transport stream is supplied. In the demultiplexer 55, packets of a desired program are separated from the supplied transport stream, and video data, audio data, and control data are separated based on information in a header portion. In addition,
First memory 56 connected to demultiplexer 55
, The data separated by the demultiplexer 55 is temporarily stored and read out when necessary.

[0007] A video / audio decoding unit (AV decoder) 57 is provided which decodes video / audio data supplied from the demultiplexer 55 and generates a received video / audio signal. The video / audio decoding unit 57 uses MPEG2
And a second memory 58 in which an MPEG2 program or the like is stored is connected. The video / audio signal decoded by the video / audio decoding unit 57 is output to a D / A converter 59 connected to the video / audio decoding unit 57, and converted into an analog video / audio signal by the D / A converter 59. Is output.

The receiving device 51 includes a front end 5
3, a CPU (central processing unit) 60 for controlling the entire apparatus such as a descrambler 54, a demultiplexer 55, and a video / audio decoding unit 57. The third memory 61 connected to the CPU 60 stores a control program for the CPU 60 to control each unit. In this case, the control data separated by the demultiplexer 55 is
The control program is supplied to the CPU 60 in response to a request from the CPU 60, and the control data stored in the memory 61 can be rewritten by the control data.

An interface (IF) 62 is connected to the CPU 60, and a remote control (remote control) signal receiving unit for a user to remotely operate the receiving device 51 via the interface 62. 63, a front panel 64 provided with operation keys, a display unit, and the like, and an IC card (security module) 65 for storing viewer information (such as billing information) are CP.
Connected to U60. The CPU 60 performs processing such as receiving a command from the remote control signal receiving unit 63, displaying the command on the display unit of the front panel 64, and receiving operation keys on the front panel 64.

A modem (modulator / demodulator) 66 connected to the interface unit 62 is controlled by the CPU 60.
This modem is used for bidirectional communication with a customer management center, such as transmitting viewer information stored in the IC card 65 via a telephone line when an off-hook command is issued from the CPU 60 via the interface unit 62. 66 and a modular jack 67 are connected. In addition,
The modular jack 67 is provided, for example, on the rear panel of the receiving device 51. When connecting the receiving device to a telephone line, the modular jack 67 and the telephone line inlet 7 are connected.
0 are connected by a modular cable 71.

Here, the satellite broadcast receiving process of the receiving device 51 shown in FIG. 7 will be described. A radio wave transmitted from a communication satellite (or a broadcast satellite) is received by an antenna 52 and an IF (intermediate frequency) of a predetermined frequency is received. ) Down-converted to a signal and output to the front end 53. At the front end 53 receiving the signal from the antenna 52,
Under the control of the CPU 60, a desired transponder is selected, and the signal of the selected transponder is set to QPSK.
The data is demodulated and subjected to an error correction process to obtain a transport stream output.

The transport stream output obtained by the front end 53 is supplied to a descrambler 54,
Under the control of the PU 60, the scramble is released and the MP
An EG2 transport stream is obtained. This transport stream is supplied to the demultiplexer 55.

The demultiplexer 55 supplied with the MPEG-2 transport stream from the descrambler 54 controls the transport stream under the control of the CPU 60.
Packets of a desired program are separated from the stream, and video data,
Voice data and control data are separated.

The image separated by the demultiplexer 55
The audio data is supplied to the video / audio decoding unit 57, and the supplied video / audio data is decoded under the control of the CPU 60 according to the MPEG program stored in the second memory 58, and the received video / audio signal is generated. Is done. Then, the decoded video / audio signal is converted into an analog video / audio signal by the D / A converter 59 and output.
The output video signal is supplied to, for example, a CRT (cathode ray tube) display (not shown) connected to the receiving device 51, and the received video is displayed on the CRT display. The output audio signal is amplified and reproduced by, for example, an amplifier by a speaker (not shown) connected to the receiving device 51.

The control data separated by the demultiplexer 55 is supplied to the CPU 60 in response to a request from the CPU 60. If necessary, the control program in the memory 61 connected to the CPU 60 is rewritten. Control is performed according to the control program.

When the data is received as described above, the CPU 6
0, the viewing history information such as the accumulated amount of money when viewing the pay-per-view program is transmitted to the interface unit 6.
2 is stored in the IC card 65.

Then, when the accumulated amount of money when the pay-per-view program is viewed reaches the set upper limit, or periodically, the line connection with the management center is established by the control of the CPU 60 under the control of the CPU 60. , I through the telephone line
The billing information read from the C card 65 is transmitted to the management center via the modem 66.

In general, at home, there is only one entrance for the telephone line, and the entrance is connected to the receiving device 5 described above.
In many cases, the extension cable must be routed to connect the modular jack of the receiving device to the entrance. In addition, if there is a service entrance on the first floor of the home and the receiving device is to be installed on the second floor, the cable will be too long, and additional work for the telephone line service entrance will be required on the second floor wall.

The applicant of the present application has previously proposed a digital satellite broadcast receiving system capable of preventing the installation location from being restricted by the location of the telephone line entrance.

The digital satellite broadcast receiving system proposed above comprises a digital satellite broadcast receiving device and a cordless communication unit. The cordless communication unit includes a slave unit connected to the receiving device, and a telephone line entrance. Is connected to the base unit, bidirectional wireless communication is performed between the base unit and the base unit, and data such as billing information is transmitted and received.

When the digital satellite broadcast receiving system proposed above is normally used in a general home or the like, it is configured as shown in FIG. 8, for example. That is, since the data communication master 80 uses the telephone line entrance 70, the telephone master using the telephone line entrance 70 (base unit of a normal cordless telephone device, the same applies hereinafter) 9
0 and the data communication master device 80 are connected in parallel using the fork conversion jack 72, and the digital satellite broadcast receiving system and the telephone at home are arranged in a close relationship.

The structure of the digital satellite broadcast receiving system proposed above will now be described. For example, as shown in FIG. 8, a digital satellite broadcast receiving device 51 'and a data communication device connected to the receiving device 51' are provided. Machine 100,
Data communication master device 80 and call master device 90 connected to telephone line inlet 70 via bifurcated conversion jack 72
And a telephone handset 95 connected to a telephone line via the telephone master 90 by performing wireless communication with the telephone master 90.
(The slave unit of a normal cordless telephone device, the same applies hereinafter). The receiving device 51 'in FIG. 8 is configured similarly to the receiving device 51 shown in FIG. 7, and is the same as each component of the receiving device 51' in FIG. 8 corresponding to each component of the receiving device 51 in FIG. And the detailed description is omitted.

The data communication slave 100 is provided with a modular jack 101, and the modular jack 67 of the receiving device 51 'and the modular jack 101 of the data communication slave 100 are connected by a two-wire modular cable 73. Receiving device 51 'and the data communication slave 1
00 is connected. This data communication slave unit 100
An antenna 102 through which radio waves for performing wireless communication with the data communication master device 80 are transmitted and received, and an RF block 103 in which a signal received by the antenna 102 is FM-demodulated and FM-modulated into a signal transmitted by the antenna 102 And an audio processing unit 10 for processing an audio signal within the frequency range of the audio frequency.
4, a conversion circuit 105 interposed between the audio processing unit 104 and the modular jack 101 and having two buffer amplifiers for 2-line / 4-line conversion, and a microcomputer for controlling the RF block 103 and the audio processing unit 104 (Hereinafter, referred to as a microcomputer) 106.
In this case, under the control of the microcomputer 106, a wireless line connection with the data communication master device 80 is established.

The modular jack 101 is connected to the conversion circuit 1
05 and the microcomputer 106 are connected.
The A / D input port 06 is provided with an A / D input port (not shown), and a signal transmitted from the modular jack 101 to the microcomputer 106 is input via the A / D input port. Also,
The data communication slave unit 100 is supplied with a power supply voltage from the AC adapter 107.

The data communication master unit 80 is connected to the telephone line inlet 70 through a modular cable 74 connected to the forked conversion jack 72, and is connected to the forked conversion jack 7.
2 is connected in parallel with a telephone master unit 90 connected to the telephone line entrance 70 through a modular cable 75 connected to the telephone line 2. In this case, the data communication master device 80
Radio waves are transmitted and received by the antenna 81 of the data communication master 80 to perform wireless communication with the data communication slave 100, and a power supply voltage is supplied from an AC adapter 82 connected to the data communication master 80. The base unit 90 communicates radio waves with the slave unit 95 by transmitting and receiving radio waves through the antenna 91 of the base unit 90, and receives power from the AC adapter 92 connected to the base unit 90. Voltage is supplied. Note that a modular cable 74 connects between the forked conversion jack 72 and the telephone line entrance 70.

In addition, the communication handset 95 transmits and receives radio waves via the antenna 96 to perform wireless communication with the communication base unit 90, and performs a call using the telephone line via the communication base unit 90. . Note that the telephone handset 95 is set on the charging stand 98 connected to the AC adapter 97 when not in use, and at the time of this setting, the AC adapter 97 is connected to the charging base 98 via the charging stand 98 (not shown). The next battery is charged.

In this system, a relay switch (not shown) is provided between the modem 66 and the modular jack 67 of the receiving device 51 '.
ON / OFF is controlled by 60.

This system is a dial pulse system in which a call signal is output and communication is performed by turning on / off a relay switch provided in the receiving device 51 '.
That is, in this system, the telephone line mode of the receiving device 51 'is set to the dial pulse. Note that the telephone line mode of the data communication master device 80 is set to a mode contracted at home where the system is located.

Here, the transmission processing of the billing information in the system shown in FIG. 8 will be described. The process is started when the amount stored in the IC card 65 of the receiving device 51 'exceeds a predetermined amount or when a predetermined time for transmission is reached. First, the CPU 60 outputs an off-hook signal to the modem 62 via the interface unit 62. The modem 62 that has received the off-hook signal is put into operation, and the relay switch in the receiving device 51 'is turned on.

When the relay switch in the receiving device 51 'is turned on, an off-hook command is issued to the data communication slave 100 via the modular cable 73, and the microcomputer 106 of the data communication slave 100 detects the off-hook. When off-hook is detected, under the control of the microcomputer 106,
A wireless connection with the data communication master 80 is established, and the telephone line is off-hook at the data communication master 80.

When data communication master 80 goes off-hook on the telephone line, a 400 Hz dial tone signal is returned to data communication master 80 via the telephone line, and data communication master 80 dials data communication slave 100. The tone signal is wirelessly transmitted as a voice signal. Upon receiving the wireless signal from the data communication master device 80, the dial tone signal processed in the data communication slave device 100 is supplied to the modem 66 of the receiving device 51 'via the modular cable 73. Then, the modem 66 detects the dial tone signal, and the connection between the receiving device 51 'and the telephone line is established.

When the connection between the receiving device 51 'and the telephone line is established, dialing for calling the center is performed by the CPU 60. This turns on / off the relay switch and generates a dial pulse. The dial pulse is detected by the microcomputer 106 of the slave unit 100 for data communication, and the same number is dialed.
This is transmitted to the telephone line through the data communication master unit 80.

A modem response signal is transmitted from the called center to the modem 66 of the receiving device 51 'via the data communication master unit 80 and the data communication slave unit 100. The charging information supplied from the CPU 60 via the interface unit 62 by the modem 66 is converted into 16-value QAM (Quadrature).
Amplitude Modulation), and this modulated signal is transmitted. The modulated billing information is supplied to the audio processing unit 104 of the slave unit 100 for data communication via the modular cable 73. The frequency of the modulated billing information is distributed within a voice band (for example, in a range of 300 Hz to 3 kHz) used in an analog cordless telephone. Therefore, in the slave unit 100 for data communication, the modulated billing signal is regarded as a voice signal and FM-modulated. This FM-modulated signal is transmitted to data communication master device 80 by radio. Then, in the data communication master device 80, the data communication slave device 10
0, the signal received is FM demodulated, and 16
The billing information modulated by the value QAM is transmitted to the center through a telephone line.

On the other hand, information from the center is wirelessly transmitted from the data communication master 80 to the data communication slave 100. The slave unit 100 for data communication processes the signal received from the master unit 80 for data communication as an audio signal. The QAM signal from the center is supplied from the data communication slave 100 via the modular cable 73 to the modem 66. The QAM signal is demodulated by the modem 66 and provided to the CPU 60 via the interface unit 62.

When the communication between the receiving device 51 'and the center is completed, the relay switch, which was on during the communication, is turned off by the CPU 60 in the receiving device 51' (on-hook operation). The data communication slave unit 100 detects the on-hook operation, and the data communication slave unit 100
Disconnect with. And the data communication slave unit 100
On-hook operation is performed in data communication master device 80 disconnected from connection to the line, and connection with the line is released.

With this configuration, the receiving device 5
The charging information and the like held by 1 '
Is transmitted to the data communication master device 80 installed near the telephone line entrance 70 by wireless communication by the communication device, and billing information and the like are transmitted to the management center through the telephone line by the data communication master device 80. It is possible to prevent the installation location of the receiving device from being restricted by the location of the entrance.

[0037]

By the way, a cordless telephone unit for connecting a digital satellite broadcast receiving device wirelessly to a telephone line entrance is provided separately from a telephone for voice communication. For example, as shown in FIG. 8 described above, when the data communication master device 80 is connected in a state where the telephone master device 90 is connected to the telephone line entrance 70, the parallel connection using the forked conversion jack 72 is performed. I have to do it.

For this reason, a two-pronged conversion jack and a cable connected to the two-pronged conversion jack are required, and the area around the two-pronged conversion jack becomes cluttered. There was a problem of deteriorating the environment.

As shown in FIG. 8, the data communication master unit 80 and the telephone master unit 90 are usually arranged close to each other because they use the same telephone line entrance 70. It is necessary to secure power. Further, the data communication slave unit 100 and the communication slave unit 95 also need to be individually supplied with power similarly.

Accordingly, four AC adapters for supplying DC power to each of the data communication master unit, the data communication slave unit, the calling master unit, and the calling slave unit are required, and a large number of power outlets are required. In addition, a large number of cables are required between the respective devices and the AC adapter, so that the number of power supply wirings increases and the area around the power outlet becomes cluttered, and the data communication master unit and the call master unit are arranged. In a room or a room where a communication handset is arranged in addition to a reception device and a data communication handset, there is a problem that a favorable indoor environment cannot be maintained.

Further, in the above-described system, the telephone for communication (the master unit and the child unit) and the telephone for data communication (the master unit and the child unit) must always be powered on. Since the telephone lines are not used at the same time, they are not used at the same time, and there is a problem that supplying power to each of them separately consumes unnecessary power.

Here, the problem in the case of using a cordless telephone unit that connects an IRD, which is a receiving device for receiving satellite broadcasting, to a telephone line has been described. However, another device for performing data communication is connected to the telephone line. Sometimes similar problems arise when using similar cordless telephone units.

In view of the above, an object of the present invention is to make it possible to easily and satisfactorily connect devices that need to perform data communication via a telephone line.

[0044]

According to the present invention, there is provided a cordless telephone device comprising: a base unit connected to a telephone line; a handset capable of making a voice call for wireless communication with the base unit; In the cordless telephone device, the charging stand is provided with an input terminal for transmission data from the outside, and the transmission data obtained at the input terminal can be transmitted from the slave unit to the telephone line via the base unit. It was done.

According to such a cordless telephone device, if there is a set of cordless telephone devices composed of a master unit and a slave unit, voice communication with the slave unit and transmission of data from a device connected to the charging stand are possible. Can be performed.

The broadcast receiving apparatus according to the present invention is a broadcast receiving apparatus for receiving a broadcast signal such as a pay broadcast, wherein a power supply terminal for supplying power to a device for transmitting information regarding a viewing history via a telephone line is provided. It is provided.

According to such a broadcast receiving apparatus, power can be directly supplied to the connected communication apparatus.

[0048]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing a configuration of a digital satellite broadcast receiving system according to one embodiment. This system is an IRD (Integrated Receiver an) that receives digital satellite broadcasts transmitted from communication satellites.
d Decoder) and its peripheral devices. Here, a cordless telephone device is used as a telephone for transmitting viewing history information generated by the receiving device 1 to a management center via a telephone line. The cordless telephone device of the present embodiment includes a base unit 35 connected to the telephone line entrance 30, a slave unit 20, and a charging stand 40 for supplying power to the slave unit 20 for charging.

First, the receiving apparatus 1 constituting the system of this embodiment will be described. The receiving apparatus 1 receives an electric wave from a communication satellite (or a broadcasting satellite), and downconverts the received signal into an IF (intermediate frequency) signal of a predetermined frequency by a converter provided therein, and outputs the signal. End for obtaining a transport stream output by performing demodulation and error correction of an input signal received from a receiver, and a data for receiving a transport stream output supplied from a front end 3 and descrambling scramble in digital satellite broadcast data. MPEG2 after scrambling
(Moving Pictures Expert Group 2) and a descrambler 4 for outputting a transport stream.

The scrambling process for digital satellite broadcast data is required to realize conditional access used to control whether or not viewing is possible for each viewer. For example, it is possible to make a contract for Pay Per View in which only a certain program is viewed for a fee each time. The descramble information (key for descrambling) required for descrambling by the descrambler 4 is inserted into the transport stream as one of the packets, like the video / audio information.

Further, the front end 3 includes a tuner for selecting a signal from a desired transponder, and a QPSK demodulation (quadrature) of the signal of the transponder selected by the tuner.
rature Phase Shift Keying) and this Q
An error correction circuit that performs error correction processing on the PSK demodulated signal and outputs a transport stream.

The receiving apparatus 1 further includes a demultiplexer 5 which receives a transport stream of MPEG2 from the descrambler 4. The demultiplexer 5 separates a packet of a desired program from the received transport stream, and separates video data, audio data, and control data based on information in a header portion. The first memory 6 connected to the demultiplexer 5 is provided for temporarily storing data separated by the demultiplexer 5 and reading and processing the data when necessary.

The receiving apparatus 1 includes a video / audio decoding unit (AV decoder) 7 for decoding video / audio data supplied from the demultiplexer 5 and generating a received video / audio signal. The video / audio decoding unit 7 is an MPEG
2 connected to a second memory 8 storing an MPEG2 program and the like. The video / audio signal decoded by the video / audio decoding unit 7 is output to a D / A converter 9 connected to the video / audio decoding unit 7, and converted into an analog video / audio signal by the D / A converter 9. Output.

The receiving apparatus 1 includes a CPU (central processing unit) 10 for controlling the entire apparatus such as the front end 3, the descrambler 4, the demultiplexer 5, and the video / audio decoding unit 7. Third connected to CPU 10
Is a flash memory, ROM, or the like that stores a control program for the CPU 10 to control each unit.
A RAM used as a temporary storage unit when rewriting the flash memory or reading data from an IC card described later is included. In this case, the demultiplexer 5
The control data separated at step C
This control data is supplied to the PU 11 and the memory 11
Can be rewritten.

The CPU 10 has an interface unit (I
F section) 12 and the interface section 1
A remote control signal receiving unit 13 for receiving a remote control (remote control) signal by infrared rays for the user to remotely control the receiving device 1 through the remote control unit 2, and a front panel 14 provided with operation keys and a display unit. The CPU 10 is connected to an IC card (security module) 15 for storing viewer history information such as an accumulated amount of money when viewing a pay-per-view program. In addition,
The CPU 10 performs processing such as receiving a command from the remote control signal receiving unit 13, displaying the command on the display unit of the front panel 14, and receiving operation keys on the front panel 14.

The modem (modulator / demodulator) 16 connected to the interface unit 12 has a processing speed of, for example, 2400 bps (or 1200 bps).
U10 controls via the interface unit 12.
The modem 16 is for performing two-way communication with a customer management center, for example, transmitting the billing information stored in the IC card 15 via a telephone line when the CPU 10 issues an off-hook command via the interface unit 12. . That is, the modem 16 modulates the data supplied from the interface unit 12 into a signal in the audio frequency band and outputs the signal, and also modulates the data input to the signal in the audio frequency band and inputs the data in a format handled by the interface unit 12. The input / output part of the signal in the audio frequency band is connected to the modular jack 17.

As shown in FIG. 2, a transformer 19a and a relay switch 19b are connected between the modem 16 and the modular jack 17. Relay switch 19b
Is controlled by the CPU 10. The modular jack 17 is provided on, for example, a rear panel of the receiving device 1.
Further, the receiving device 1 of the present example includes a power supply unit 18 that supplies a DC low-voltage power supply to each unit of the receiving device 1. The power supply unit 18 is supplied with a power obtained by rectifying and transforming a commercial AC power supply, and generates a DC power supply for operating each unit in the receiving device 1. Here, in this example, a DC power is also supplied from the power supply unit 18 to the modular jack 17 so that power can be output from the modular jack 17 to the outside. That is, as shown in FIG. 2, at least four terminals 17a, 17
b, 17c, and 17d are used. The two central terminals 17a and 17b are connected to the modem 16, and the two outer terminals 17c and 17d are connected to the power output unit of the power supply unit 18. .

Here, a satellite broadcast receiving process of the receiving apparatus 1 constituting the digital satellite broadcast receiving system of the present embodiment will be described. A radio wave transmitted from a communication satellite (or a broadcasting satellite) is received by the antenna 2, and a predetermined frequency I
The signal is down-converted to an F (intermediate frequency) signal and output to the front end 3. The front end 3 receiving the signal from the antenna 2 selects a desired transponder under the control of the CPU 10, performs QPSK demodulation on the signal of the selected transponder, further performs error correction processing, and outputs the transport stream output. Then, the transport stream is supplied to the descrambler 4.

The descrambler 4 is connected to the CPU 10
, The scramble is released to obtain an MPEG2 transport stream. This transport stream is supplied to the demultiplexer 5.

Then, the CPU 1
Under control of 0, packets of a desired program are separated from the input transport stream, and video data, audio data, and control data are separated based on information in the header section of each packet.

The video / audio data separated by the demultiplexer 5 is supplied to the video / audio decoding section 7 and the second memory 8
CPU 1 according to the MPEG program stored in
Under the control of 0, the supplied video / audio data is decoded to generate a received video / audio signal. Then, the D / A converter 9 converts the decoded video / audio signal into an analog video / audio signal and outputs it. Note that the output video signal is supplied to a receiver (not shown) connected to the receiver 1 and displayed. Further, the output audio signal is supplied to an audio system circuit (or an audio output device different from the receiver) provided in the receiver connected to the receiver 1 to emit sound from a speaker connected to the circuit.

The control data separated by the demultiplexer 5 is supplied to the CPU 10 at the request of the CPU 10, and if necessary, the memory 11 connected to the CPU 10
After that, the control program is rewritten, and thereafter control is performed according to the rewritten control program.

Thus, the reception processing of the digital satellite broadcast is performed. In this case, for example, the remote control signal receiving unit 13
Remote control to send data to the
When the user selects and watches the pay-per-view program by operating the operation keys, the CPU 10 controls the interface unit 1 to transmit various data such as the viewing fee.
The processing for storing the viewing history information such as the accumulated amount in the IC card 15 is performed.

When the accumulated amount of money when the pay-per-view program is viewed reaches an upper limit set in advance, or periodically, the viewing history information stored in the IC card 15 is transmitted via the modem 16. To the external charging management center via a telephone line. The modem 16 is a circuit that converts supplied data such as viewing history information into audio band data. The telephone number of the charging management center is specified by control data received by the receiving device 1 together with, for example, video data and audio data, and a telephone number of an uplink destination is set for each receiving device. Uplink processing is first performed by I
Data is read from the C card to the CPU 10, and then communication is performed between the CPU 10 and the accounting management center via the modem 16 and the telephone line.

The CPU 10 periodically sends an uplink confirmation command to the IC card 15 and reads out data stored in the IC card 15 such as the telephone number of the charging management center, IC card authentication information, and viewing history information. . CPU
10 controls the modem 16 to call the charging management center, transmit the password, and receive the password from the charging management center. Then, the viewing history data is transmitted to the charging management center, and when the transmission is completed, the line is disconnected. The signal between the receiving device and the accounting management center is modulated by 16-level QAM (Quadrature Amplitude Modulation). Also, all data is encrypted for security.

Note that the viewing control in the pay broadcast system is performed by a scramble authorization system. In this system, individual individual information (EMM: En
titlement Management Message) is sent together with the video / audio data, and the receiving terminal sends an EMM with the same ID
Is decrypted, and the work key in the EMM is taken into the IC card. The EMM also includes information on the telephone number of the management center that is the uplink destination described above. EM
The key for decrypting M is an individual key for each receiving terminal, and is stored in the IC card in advance. EM
M includes a contracted channel ID and contract type (for example, provisional contract, pay-per-view, etc.) in addition to the work key and the telephone number.

When a program is viewed, common information (ECM: Entitlement Control) common to the receiving terminal and attached to the program is displayed.
Message) is taken into the IC card, and if the work key corresponding to this channel is stored in advance, the descrambling process is performed and the user can view the message. The individual information and the common information are transmitted in the form of packets of an MPEG-2 transport stream, similarly to the video / audio data. In the case of pay-per-view, as described above, the viewing history information is regularly uploaded via the telephone line.

Next, the base unit 3 constituting the cordless telephone connected to the digital satellite broadcast receiving apparatus 1 of the present embodiment.
5 and the child device 20 will be described.

As shown in FIG. 1, child device 20 is
Antenna 2 for transmitting and receiving radio waves for wireless communication with
1 and an RF block 2 that FM-demodulates a signal received by the antenna 21 and FM-modulates the signal to be transmitted by the antenna 21
2 and an audio processing unit 23 for processing an audio signal or a signal in a frequency range equivalent to the audio signal. A voice speaker 26 and a microphone 27 are connected to the voice processing unit 23. The voice processing unit 23 performs a process of converting the voice picked up by the microphone 27 into a voice signal for transmission. The audio signal received by the speaker 26 is emitted from the speaker 26 as an audio signal for driving the speaker 26 by the audio processing unit 23.

The audio processing unit 23 is connected to an input / output unit on the 4-wire side of a conversion circuit 24 for performing 2-wire / 4-wire conversion. Further, a microcomputer (hereinafter, referred to as a microcomputer) 2 that controls the RF block 22 and the audio processing unit 23.
5 is provided. Under the control of the microcomputer 25, the slave unit 20 is provided with a master unit 35 installed within the radio wave range of the slave unit 20.
Wireless connection.

The microcomputer 25 is connected to an operation unit 28 for performing, for example, a dial operation as a telephone, and controls a circuit in the slave unit 20 according to the operation of the operation unit 28. For example, when an input of a dial number and an operation of making a call to the number are performed on the operation unit 28, the control data is transmitted from the RF block 22 to the master unit 35 so as to perform dialing for making a call to the number. Is performed.

The speaker 26 and the microphone 27 are
When the slave unit 20 is used as a telephone for voice call, it is arranged at a position where a call can be easily made. For example, as shown in FIG. 3, a speaker 26 is arranged on the upper side of the front face of the slave unit 20, and a microphone 27 is arranged on the lower side of the front face.

The slave unit 20 of the present embodiment includes a power supply unit 29 for supplying power to each unit of the slave unit 20. The power supply unit 29 has a built-in secondary battery such as a nickel cadmium battery, and is supplied with power for charging from the charging stand 40 side.
The configuration is such that the next battery is charged. That is, the child device 20
For example, as shown in FIG. 3, contacts 20 a and 20 b which are input terminals of a charging power supply are provided on the bottom surface, and when the slave 20 is placed on the charging stand 40, the contacts 42 and 43 on the charging stand 40 side are provided.
Is configured to contact the contacts 20a and 20b on the slave unit 20 side. When the slave unit 20 is placed on the charging stand 40, the secondary battery of the slave unit 20 is charged by the power supplied from the charging stand 40. Is done. Although the control configuration for starting and ending the charging is omitted here, the control may be performed by either the slave unit 20 or the charging stand 40. Alternatively, the charging current is set to a very small current, and when the slave unit 20 is placed on the charging stand 40, the secondary battery is always charged with a very small current to start and end charging. May not be performed.

The slave unit 20 of the present embodiment includes, in addition to the charging contacts 20a and 20b, contacts 20c and 20d connected to the two-wire input / output unit of the two-wire / four-wire conversion circuit 24. . The contacts 20c and 20d are also arranged on the bottom surface as shown in FIG.
Is placed, the contacts 44, 45 on the charging stand 40 contact the contacts 20c, 20d on the slave 20 side. As shown in FIG. 2, the contact points 20c and 20d are connected to the output section of the buffer amplifier 24a and the input section of the buffer amplifier 24b constituting the 2-wire / 4-wire conversion circuit 24. However, the contact 20d of the contacts 20c, 20d is connected to the ground potential of the circuit in the slave unit 20, the contact 20c is directly connected to the buffer amplifiers 24a, 24b, and the contact 20c and the buffer amplifier 24a Is connected to the resistor 24c. The contact 20
c is connected to the analog voltage input port 25a of the microcomputer 25, and the potential Vr of the contact 20c is
Is configured to monitor.

The charging stand 40 is provided with a modular jack 41 at a position exposed to the outside of the housing, for example, as shown in FIG. This modular jack 41 has at least four terminals 41a, 41b, 41 as shown in FIG.
c, 41d are used, the central two terminals 41a, 41b are electrically connected to the above-mentioned contacts 44, 45, and the two outer terminals 41c, 41d are connected to the above-mentioned contacts 42, 41. 43 and is electrically connected.

Here, as shown in FIGS. 2 and 4, a plug 31a at one end of a four-wire type modular cable 31 is connected to the modular jack 41 of the charging stand 40, and the modular cable 17 is connected to the modular jack 17 of the receiver 1. 3
The other end of the plug 31b is connected. Therefore, the slave 20
Is placed on the charging stand 40, the power supply unit 29 of the slave device 20 is supplied with power from the power supply unit 18 of the receiving device 1 via the charging stand 40 and the modular cable 31, and the secondary The battery is charged. When the slave unit 20 is installed on the charging stand 40, a circuit connected to the microcomputer 25 and the conversion circuit 24 of the slave unit 20 and the modular jack 17 of the receiving device 1 via the charging stand 40 and the modular cable 31. Are electrically connected.

The base unit 35 has a function of performing dialing, talking, and the like. Although not shown, in this example, at least the members and functions of the base unit of the cordless telephone device, such as a receiving speaker and a microphone, are provided. Here, it is connected to the telephone line entrance 30 by a two-wire type modular cable 32. In this case, base unit 35 transmits and receives radio waves with antenna 36 of base unit 35 and sets
Performs wireless communication with The master unit 35 receives power from an AC adapter 37 connected to the master unit 35.

In a state where the cordless handset 20 of the cordless telephone device thus configured is placed on the charging stand 40, the charging current of the secondary battery is supplied from the receiving device 1 via the modular cable 31 and the charging stand 40, and , And data such as billing information is supplied and transmitted.

Here, a state in which data transmission is performed via the slave unit 1 under the control of the receiving device 1 will be described.
In this example, as described with reference to FIG. 2, between the modem 16 and the modular jack 17 of the receiving device 1,
A transformer 19a and a relay switch 19b are provided.

The relay switch 19b is turned on by the off-hook command of the CPU 10, turned off by the on-hook command, turned off during the high level period of the dial pulse, and turned on during the low level period of the dial pulse. Further, the relay switch 19b is connected to
In a state where the charging information modulated by the six-value QAM is output to the slave unit 20 via the charging stand 40, and in a communication state where the modem 16 receives the modulated data from the slave unit 20 via the charging stand 40, Turned on.

Therefore, in this example, the signal output from the receiving device 1 via the modular jack 17 is received by the CTU slave unit 20 via the charging stand 40, and the received signal is received by the audio processing unit via the buffer amplifier 24b. 23. Further, the signal supplied from the audio processing unit 23 is transmitted to the receiving device 1 via the buffer amplifier 24a and the resistor 24c.

In this embodiment, the microcomputer 25 of the slave 20
Detects on / off of the relay switch 19b as a change in the voltage Vr. That is, the relay switch 19b
Is off, the voltage Vr is at a predetermined value (for example, +3.
5V). When the relay switch 19b is turned on, a transmission path is formed by the modular cable 31 and the relay switch 19b. The DC resistance of this path is R2,
Assuming that the resistance of the resistor 24c is R1, the relay switch 19
When b is turned on, the voltage Vr has a value divided by the resistors R1 and R2 (that is, Vr × (R1 / (R1
+ R2)).

The voltage Vr is converted into, for example, an 8-bit digital signal by the A / D input port 25a of the microcomputer 25. As described above, the microcomputer 25 can detect the change (dial pulse) of the voltage Vr uttered by turning on / off the relay switch 19b and the number of dial pulses by the software.

The configuration in FIG. 2 is a dial pulse system in which communication is performed by turning on / off a relay switch 19b. That is, here, the receiving device 1
Is set to dial pulse. The telephone line mode of the base unit 35 is set to a mode in which the device is installed, for example, a contract at home. In this case, when communication is performed by DTMF (Dual Tone Multi Frequency), a DTMF decoder 47 for decoding a DTMF signal from the receiving device 1 is provided in the slave unit 20 in a connection state indicated by a broken line in FIG. There is a need to.

Next, the transmission processing of the billing information in the digital satellite broadcast receiving system of the present embodiment described above will be described.
This will be described with reference to FIG. Here, the communication operation between the main components of the system of the present example will be described. Also, circled numbers are given according to the order of operation, and the operation will be described according to this order.

When the amount stored in the IC card 15 of the receiving device 1 exceeds a predetermined amount, or when a predetermined time for transmission is reached, the charging information transmission process in this example is started. Is performed. In this process, the CPU 10 outputs an off-hook signal to the modem 16 via the interface unit 12, and the modem 1 that has received the off-hook signal
6 as an operating state, and the relay switch 19 of the receiver 1
Turn on b.

In the process (2), the relay switch 19b is turned on, and the decrease in the voltage Vr indicates that the slave unit 2
0 is detected by the microcomputer 25. The microcomputer 25 detects the off-hook by detecting the decrease in the voltage Vr.
Upon detecting the off-hook, the microcomputer 25 establishes a wireless connection with the master unit 35 under the control of the microcomputer 25, and the master unit 35 goes off-hook on the telephone line.

In the processing of 400H through the telephone line,
The dial tone signal of z is returned to the base unit 35, and the base unit 3
From 5, the dial tone signal is wirelessly transmitted as an audio signal to the slave 20. When receiving the radio signal from the base unit 35, the dial tone signal processed by the sub unit 20 is supplied to the modem 16 of the receiving device 1 via the charging stand 40 and the modular cable 31. Then, the modem 16 detects the dial tone signal and establishes a connection between the receiving device 1 and the telephone line.

In the process (1), under the control of the CPU 10,
The relay switch 19b is turned on / off to generate a dial pulse, and dialing for calling the center is performed. The microcomputer 25 of the slave unit 20 detects the dial pulse via the modular cable 31 and the charging stand 40, and dials the same number. This is transmitted to the telephone line through the parent device 35.

In the process (1), a modem response signal is transmitted from the called center to the modem 16 of the receiving device 1 via the master unit 35, the slave unit 20, and the charging stand 40. Modem 16
Modulates the billing information supplied by the CPU 10 through the interface unit 12 by 16-level QAM, and transmits a modulated signal. Then, the modulated billing information is supplied to the audio processing unit 23 of the slave unit 20 via the modular cable 31 and the charging stand 40. The frequency of the modulated billing information depends on the voice band (eg, 300
Hz to 3 kHz). Therefore, the handset 2
0 performs FM modulation by regarding the modulated billing signal as a voice signal. The FM-modulated signal is transmitted to base unit 35 by radio, and base unit 35 FM-demodulates the signal received from handset 20.
After the FM demodulation, the billing information subjected to 16-value QAM modulation is transmitted to the center via a telephone line.

On the other hand, information from the center is wirelessly transmitted from the master unit 35 to the slave unit 20. The slave 20 processes the signal received from the master 35 as an audio signal. A QAM signal from the center is supplied to the modem 16 from the slave unit 20 via the charging stand 40 and the modular cable 31. The modem 16 demodulates the QAM signal and supplies the QAM signal to the CPU 10 via the interface unit 12.

[0093] This processing is performed when the communication between the receiving apparatus 1 and the center is completed. That is, when the communication between the receiving device 1 and the center ends, the receiving device 1 turns off the relay switch 46 that was on during the communication under the control of the CPU 10 (on-hook operation). The slave unit 20 detects the on-hook operation via the modular cable 31 and the charging stand 40,
The child device 20 releases the connection with the parent device 35. The parent device 35 disconnected from the child device 20 performs an on-hook operation,
Disconnect from the line.

In this example, the charging stand 4
0, a signal from the receiving device 1 connected to
When performing communication with the base unit 35, for example, under the control of the microcomputer 25 of the slave unit 20, the sound output from the speaker 26 connected to the sound processing unit 23 and the sound collection by the microphone 27 are not performed. Only when the operation unit 28 is turned off-hook or the like, the speaker 2
6 and a microphone 27.

As described above, the handset 20 constituting the cordless telephone of the present embodiment is provided in the receiver 1 as the IRD.
By connecting the charging stand 40, the receiving device 1 can be wirelessly connected to a telephone line, similarly to the case where the cordless communication unit dedicated to data communication shown in FIG. 8 is used in the conventional example. In this case, the devices directly connected to the receiving device 1 by a cable are a cordless telephone handset provided with a circuit for voice communication and a charging stand thereof. Therefore, when it is not necessary to transmit data such as the viewing history from the receiving device 1, the slave unit can be used as a normal cordless telephone slave unit for making a voice call. There is no need to provide a cordless communication unit for body data communication, and the receiving apparatus 1 can be wirelessly connected to a telephone line with a very simple system configuration.

As compared with the case where the cordless communication unit dedicated to data communication shown in FIG. 8 is used, the number of the base units and the handset units of the telephone set can be halved, and the number of telephone sets installed by the user can be reduced accordingly. Can be. Also,
Conventionally, four telephones required an AC adapter, but in this case, the power supply to the slave 20 is
Since only one AC adapter 37 needs to be connected to the base unit 35, the required number of power outlets can be significantly reduced, and the need for AC adapters is reduced. The number of cables can be greatly reduced, and the receiver for digital satellite broadcasting can be installed while maintaining a comfortable indoor environment without cluttering the power supply wiring.

The internal circuits newly required for the mobile device 20 to perform data communication include the receiving device 1
The other configuration is a two-wire / four-wire conversion circuit 24 for converting signals from the microcomputer 25. As another configuration, the microcomputer 25 has a function of performing a dialing or the like based on data from the receiving device 1 as a control configuration. It can be realized by adding only a few circuits and functions to a conventional cordless telephone handset. For this reason, the cordless telephone device for telephone calls can be purchased at a much lower cost than the conventional cordless telephone device which requires the separate purchase of a cordless telephone device dedicated to data communication. Further, by eliminating waste of resources, it is possible to contribute to environmental improvement, and it is possible to reduce power consumption by reducing the number of telephones.

The transmission of the viewing history information via the telephone line from the digital satellite broadcast receiving IRD constituting the receiving apparatus 1 is performed at a very small frequency, for example, once to several times a month, and at night. The normal call is performed during a time period in which the possibility is low, and the transmission of the viewing history information and the use of the slave unit 20 for the call do not almost always cause inconvenience.

In the above-described embodiment, the charging stand 4
0 and the receiving device 1 are connected by a four-wire modular cable 31, and the charging stand 40 receives power from the receiving device 1 for charging the slave unit 20 using two of the four wires of the modular cable 31. Although the power supply is supplied to the charging stand 40, a separate AC adapter (or built in the charging stand) may be used as in the related art.

That is, for example, as shown in FIG.
0 ′, the DC input jack 46 is attached, and the terminals 42 and 43 that come into contact with the terminals 20 a and 20 b of the slave unit 20.
The DC input jack 46 is connected to the power supply path connected to. If necessary (that is, when power is not supplied from the receiving device side),
Connect the DC output plug 102 of the adapter 101 and
The power supply for charging the slave unit 20 is supplied from the adapter 101. The other parts are configured similarly to the charging stand 40 connected in the example of FIG. With this configuration, the modular jack 1 included in the connected receiving device 1 'is provided.
7 ', only the terminals 17a and 17b for data communication are provided, and the power from the power supply circuit is supplied to the modular jack 17'.
In this case, the slave unit and the charging stand of the present embodiment can be applied to a configuration in which the slave unit and the charging stand are not supplied to the portable terminal (that is, the same as a receiving device having a conventional modular jack). In the example of FIG. 6,
Terminal 41c of modular jack 41 of charging stand 40 ',
Although a configuration is possible in which both the power input from the DC input jack 46 and the power input from the DC input jack 46 are possible, the terminal 41
c, 41d, the DC input jack 4
Only the power input from the power supply 6 may be supplied to the child device 20 side.

In the above-described embodiment, the charging power is supplied from the charging stand to the slave unit through the contact. However, the charging power is supplied to the child without contact using an induction coil. It is good also as composition supplied.

In the above-described embodiment, the child device 20
The IRD for receiving digital satellite broadcasts is used as a device connected to the charging stand 40 of the U.S.A. through a modular cable, and the viewing history information is transmitted via the telephone line to the center side (program transmission side).
However, the present invention can be applied to a case where other data is transmitted via a telephone line by dialing from the IRD. For example, the present invention can be applied to a case where data of a homepage on the Internet is transmitted on a predetermined channel prepared as a digital satellite broadcast, and a case where data such as a homepage address is transmitted from the IRD side to the center side via a telephone line. . Also, IRD is
In addition to the single receiver as shown in FIG. 1, the present invention can be applied to a receiver in which a similar receiver is built in a television receiver.

Further, an IRD for receiving digital satellite broadcasts
Other devices may be connected to the charging stand 40 of the child device 20 by a modular cable. For example, a modem connected to a personal computer device may be connected to the charging stand 40 with a modular cable, and transmission and reception of e-mail using the computer device may be performed via the slave device 20.

Further, in the above-described embodiment, the details of the method of performing wireless communication between the slave unit 20 and the master unit 35 have not been described, but various systems which are practically used as cordless telephones are described. Applicable. For example, the present invention can be applied to a digital cordless telephone system for wirelessly transmitting digital data. In the case of the digital cordless system, as the slave unit 20, in addition to the connection to the telephone line via the base unit 35, the slave unit 20 can be connected to a public wireless telephone line such as a PHS (Personal Handy Phone System). In some cases, data transmission may be performed by connecting to the center via such a wireless telephone line.

[0105]

According to the cordless telephone device of the first aspect, if there is a set of cordless telephone devices composed of a master unit and a slave unit, voice communication with the slave unit and connection to the charging stand are provided. Data from the connected device, and a wireless connection using a cordless telephone device for calls.
Devices that require data transmission by telephone lines, such as digital broadcast receivers, can be easily connected.

According to the cordless telephone device described in claim 2, in the invention described in claim 1, the input terminal of transmission data provided in the charging stand is constituted by a telephone line modular jack, so that the telephone line Accordingly, it is possible to easily connect a device requiring data transmission and a charging stand by simply connecting the charging cable with a modular cable.

According to the cordless telephone device described in claim 3, in the invention described in claim 2, the input terminal of the power supply provided in the charging stand also uses the modular jack in common, so that data transmission is performed by the telephone line. The data transmission path and the power supply path are secured simply by connecting the necessary equipment and the charging stand with one modular cable,
You can easily connect.

According to the cordless telephone device described in claim 4, in the invention described in claim 1, when the wireless communication circuit of the slave unit transmits data obtained at the transmission data input terminal of the charging stand, By setting the handset to be in a state where calls cannot be made using the voice call circuit, noise is not output from the call speaker during data transmission, and data picked up by the microphone disturbs data transmission. Disappears.

According to the broadcast receiving apparatus of the present invention, it is possible to directly supply power to a communication apparatus that needs to be connected to the receiving apparatus, and to supply power to the connected communication apparatus such as an AC adapter. Need not be connected, and the system configuration can be simplified accordingly.

According to the broadcast receiving apparatus described in claim 6, in the invention described in claim 5, the data output terminal and the power supply output terminal are constituted by one modular jack for a telephone line. When a communication device is connected to the receiving device, the connection can be made with a single modular cable, and the connection configuration can be extremely simplified.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a configuration of an entire system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an example of a configuration of a main part according to an embodiment of the present invention.

FIG. 3 is a perspective view showing an example of the external appearance of a child device and a charging stand according to one embodiment of the present invention.

FIG. 4 is a perspective view showing a connection example of a charging stand according to one embodiment of the present invention.

FIG. 5 is a timing chart showing an example of communication processing according to an embodiment of the present invention.

FIG. 6 is a configuration diagram showing an example of a configuration of a main part according to another embodiment of the present invention.

FIG. 7 is a block diagram illustrating an example of a conventional receiving device.

FIG. 8 is a block diagram illustrating an example of a configuration of an entire system of a conventional receiving device.

[Explanation of symbols]

1, 1 '... receiving device, 16 ... modem, 17, 17' ... modular jack, 18 ... power supply unit, 20 ... slave unit, 23 ...
Voice processing unit, 24: 2-wire / 4-wire conversion circuit, 25: microcomputer (microcomputer), 28: operation unit, 29: power supply unit, 31: modular cable, 35: master unit, 40,
40 ': charging stand, 41: modular jack

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04M 11/00 303 H04N 5/44 Z H04N 5/44 7/14 // H04N 7/14 7/20 630 7/20 630 H04B 7/26 Y F term (reference) 5C025 AA29 BA27 DA01 DA04 DA05 DA08 5C064 BA01 BB01 BB02 BC01 BC21 BC22 BC27 BD03 BD04 BD08 DA01 DA12 5K027 AA12 CC08 GG04 KK02 KK07 5K067 AA34 BB08 DD13 KK03 GG08 KK20 LL14 QQ11

Claims (6)

[Claims] 1. A base unit connected to a telephone line and including a wireless communication circuit, a wireless communication circuit for performing wireless communication with the base unit, a voice communication circuit connected to the wireless communication line, and an internal circuit , A power input unit for charging the secondary battery, an external transmission data input unit, an operation unit, and a number or a number indicated by data obtained from the transmission data input unit. A slave unit having a control unit for making a request for dialing to the number operated by the operation unit to the master unit; an input terminal of a power supply for charging a secondary battery of the slave unit; An input terminal for transmitting data, a power output unit for supplying power obtained from an input terminal of the power supply to a power input unit of the slave unit, and a transmission data input terminal for inputting data obtained from an input terminal of the transmission data to the slave unit. And a data output section to be supplied to the Example was cordless telephone apparatus composed of a charging stand. 2. The cordless telephone device according to claim 1, wherein an input terminal of transmission data provided in the charging stand is a modular jack for a telephone line. 3. The cordless telephone device according to claim 2, wherein the modular jack is commonly used for an input terminal of a power source provided in the charging stand. 4. The cordless telephone device according to claim 1, wherein when the wireless communication circuit of the slave unit performs transmission processing of data obtained at the transmission data input terminal of the charging stand, the wireless communication circuit of the slave unit uses A cordless telephone device that is set so that calls cannot be made on the circuit. 5. A broadcast receiving apparatus for receiving a broadcast signal, comprising: a data read means for reading information to be transmitted by a telephone line to the broadcast signal transmitting side; and a data read by the data read means for a telephone line. A broadcast receiving apparatus comprising: a conversion unit that converts the signal into a signal; an output terminal that outputs a signal converted by the conversion unit; and a power terminal that supplies power to a device connected to the output terminal. 6. The broadcast receiving apparatus according to claim 5, wherein said output terminal and said power terminal are constituted by one modular jack for a telephone line.