JP2000350052A - Remote control signal transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize sensitivity (arrival distance and angular range) which are equal to that of the case of directly controlling a TV broadcast receiver by a remote control transmitter, without being restricted by a remote control code. SOLUTION: A remote control signal reception section 8 receives an infrared- ray carrier remote control signal sent from a remote control transmitter 7 and extracts the remote control signal. A remote control signal waveform shaping section 9 which shapes a waveform of a remote control signal to eliminate the errors of the remote control signal (remote control signal, whose waveform is shaped is modulated and transmitted through a transmission line 1). A remote control signal waveform shaping section 16 shapes a waveform the remote control signal to eliminate errors in the remote control signal being an output of a remote control signal demodulation section 15. A remote control signal transmission section 17 converts the remote control signal, whose waveform is shaped into a form of an infrared-ray carrier remote control signal and transmits the converted remote control signal to a TV broadcast receiver 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TV (Tel) which is controlled by a remote control signal.
(eVision) Transmission of a remote control signal in a TV broadcast viewing system that controls a broadcast receiver (for example, a location that is so far away that an infrared carrier remote control signal does not directly reach the TV broadcast receiver (for example, a private room in a user's home of the TV broadcast viewing system) ) And a location where the TV broadcast receiver is installed (for example, a living room of the user's house).

Here, in this specification, the following a and b
Are used in the following meanings. a. TV broadcast receiver: a device (for example, a tuner device) for realizing functions related to providing a TV broadcast viewing environment such as a tuning function and a recording / playback function. B. Infrared transport remote control signal: Remote control signal transported by infrared

[0003] More generally, as a signal emitted from a remote control transmitter, a "remote control signal carried by an electromagnetic wave including up to a light band" can be considered. However, in many of the following descriptions, the above-described “infrared transport remote control signal” which is overwhelmingly frequently used will be described as a representative (the description described in the “infrared transport remote control signal” is “ It can be generalized and extended to "remote control signals carried by electromagnetic waves including up to the optical band.")

[0004]

2. Description of the Related Art In recent years, a pay TV broadcast viewing system for paying and viewing a pay TV broadcast under a charging method as shown in the following a to d has been generalized. a. Lending a terminal (paid TV broadcast receiver) to the user,
The user is charged for each terminal lending number. b. A unique number is given to a user in the pay TV broadcast viewing system, and the user is charged for issuing the number. c. IC (Integrated Circuit) card (IC that is lent for a fee to operate the terminal
Card and IC recording viewing information for billing
Card) to charge the user. d. The user is charged by a terminal having a mechanism for transmitting the viewing information to the broadcaster.

[0005] In order to view such a pay TV broadcast in a plurality of rooms in a user's house, an additional investment and an additional running cost are required based on the addition of a terminal.
Here, if the frequency of watching the counter program is low at the same time,
Naturally, there is a demand for sharing one terminal in a plurality of rooms. Further, in the future, it is conceivable that a recording / playback function capable of simultaneous recording / playback of a plurality of programs will be added to the function of the pay TV broadcast receiver, and the above demand will be further increased.

[0006] In addition to a pay TV broadcast viewing system, a conventional general TV broadcast is provided by a plurality of TV receivers installed in a plurality of rooms.
It is conceivable that a request may be made to view the TV broadcast receiver in a shared form.

Here, in order to meet such a request, a TV signal from a TV broadcast receiver installed in a certain room (living room, etc.) is transmitted to a TV receiver in each room (each private room, etc.). A TV broadcast viewing system that distributes and views the broadcast is required.

[0008] Such a TV broadcast viewing system can be constructed, for example, by using the technique presented in Japanese Patent Application Laid-Open No. 11-41582. In the technology described in the publication, a plurality of video and audio devices are centrally arranged and the video and audio are selectively transmitted, and the video and audio selected as described above are optionally transmitted to each room in a home or office. A signal transmission / reception system that can receive and use the same is presented.

In this case, a necessary and problematic method is to operate a TV broadcast receiver installed in a specific room such as a living room from each room where a TV receiver exists.
It is how to provide. Such an operation method can be realized by transmitting a remote control signal from a remote control device attached to a TV broadcast receiver from each room to the specific room (such as a living room) in many cases. . In such a case, a “remote control signal transmission method” for performing the above “transmission of the remote control signal” is required.

A remote control signal transmission system of this type (a remote control signal transmission system in a TV broadcast viewing system) using a conventional technique (the technique described in the above-mentioned publication) is called T
V broadcast receiver (TV that receives infrared carrier remote control signal)
A main unit having a unit for connecting (broadcast receiver) and a TV receiver (main) and transmitting (emitting) an infrared remote control signal, and a TV receiver (secondary) for receiving (receiving) the infrared remote control signal. And a sub-unit having a unit. Here, the same remote control transmitter which is operated by the user and transmits the infrared remote control signal is used in the main unit and the sub unit.

[0011] In the conventional remote control signal transmission system configured as described above, the reception of the infrared remote control signal from the remote control transmitter in the subunit → the modulation of the remote control signal in the subunit → the transmission from the subunit to the main unit Transmission of remote control signal (remote control signal carried by carrier wave for transmission) → demodulation of remote control signal in main unit → transmission of infrared carrier remote control signal to TV broadcast receiver in main unit ” ,
Transmission of a remote control signal is realized.

In the TV broadcast viewing system as described above, a TV signal for providing a user with a TV broadcast viewing environment via a TV receiver is transmitted from a TV broadcast receiver to a main unit and a transmission path (main line). The signal is transmitted to the TV receiver in each room via the transmission path between the unit and the subunit) and the subunit.

[0013]

In the conventional remote control signal transmission method described above, it is necessary to consider the following problems (problems).

First, as described above, the transmission of the remote control signal is simply realized by the processing method of “infrared transport remote control signal reception → remote control signal modulation → transmission → remote control signal demodulation → infrared transport remote control signal transmission”. "Propagation of infrared remote control signal from remote control transmitter to subunit", "Reception (light reception) of infrared remote control signal at subunit", "Transmission of remote control signal from subunit to main unit", And "Transmission of infrared remote control signal from main unit / TV
Errors accumulate in the process of "reach to the broadcast receiver". Therefore, the sensitivity, such as the reach distance and the angle range, of the signal guaranteed in the use state assumed at the time of design of the TV broadcast receiver (the state in which the infrared remote control signal is directly transmitted from the remote control transmitter to the TV broadcast receiver) is guaranteed. In some cases, is significantly lower.

Second, in order to avoid the above problem,
Instead of transmitting the remote control signal from the subunit to the main unit as it is, a processing method of once interpreting the remote control signal in the subunit and generating the remote control signal again in the main unit according to the content of the interpretation. It is possible to adopt. However, according to such a processing method, there is a new problem that it is impossible to cope with a remote control code other than that assumed at the time of design. That is, since only a specific TV broadcast receiver can be connected, multi-vendor support cannot be performed, and a new function is added to a TV broadcast receiver of the same vendor (a new remote control code is added). ) Has the disadvantage that replacement of the successor is not possible.

In view of the above, an object of the present invention is to provide a TV broadcast viewing system in which a remote control signal is transmitted between a subunit and a main unit (between rooms such as a private room and a living room). In the process, the waveform (pulse width) of the remote control signal is shaped, so that the same sensitivity (reaching distance and angle range) as when the TV broadcast receiver is directly operated by the remote control transmitter is restricted by the remote control code. SUMMARY OF THE INVENTION An object of the present invention is to provide a remote control signal transmission system that can be realized without using a multi-vendor system.

The patent gazette relating to the present invention includes, in addition to the above-mentioned JP-A-11-41582, JP-A-63-41582.
Japanese Patent Application Laid-Open No. 296919, Japanese Patent Application Laid-Open No. Hei 1-91599, and Japanese Patent Application Laid-Open No. 58-184897.

The technique described in the above-mentioned Japanese Patent Application Laid-Open No. 63-296419 (a relay device of a home automation system) directly modulates and transmits a remote control signal, and demodulates and transmits the signal. It enables device control in areas where it is not possible. However, in this technology, there is a problem that errors accumulate in the process of receiving, modulating, transmitting, demodulating, and retransmitting, and deterioration in the sensitivity of the remote control signal cannot be suppressed (such as a shorter reach). Points will remain unresolved.

In the technique (remote control switch device) described in JP-A-1-91599, a pulse width management method is adopted in order to support multi-vendors. The solution to the problem of "accumulation of errors" has not been addressed.

On the other hand, if the technique (remote control signal receiving apparatus) described in Japanese Patent Application Laid-Open No. 58-184897 is used, the above problem of "accumulation of errors" can be solved by waveform shaping. However, in this technique, since the management of the upper limit value and the lower limit value is fixed to one type, the above-mentioned problem of "restricted by the remote control code (multi-vendor correspondence cannot be performed)" is solved. Can not do.

[0021]

According to the present invention, there is provided a remote control signal transmission system for receiving an infrared carrier remote control signal transmitted from a remote control transmitter in a TV broadcast viewing system in which a main unit and a subunit are connected by a transmission line. A remote control signal receiving unit in the subunit that extracts a remote control signal from the infrared transport remote control signal, and a subunit that shapes the waveform of the remote control signal so as to remove an error in the remote control signal extracted by the remote control signal receiving unit. Remote control signal waveform shaping unit,
A remote control signal modulation unit in the subunit for modulating the remote control signal shaped by the remote control signal waveform shaping unit in the subunit into an RF (Radio Frequency) band carrier carrier remote control signal in a form suitable for transmission on a transmission path; A remote control signal mixing unit in a subunit for mixing an RF band carrier remote control signal output by the remote control signal modulation unit with a TV-RF signal and transmitting the mixed signal to a transmission line; and a signal transmitted on the transmission line by the remote control signal mixing unit Signal separating section in the main unit for separating and extracting the RF band carrier remote control signal from the remote controller, and remote control signal demodulation in the main unit for demodulating the RF band carrier remote control signal extracted by the remote control signal separating section into a remote control signal Unit, output by the remote control signal demodulation unit. A remote control signal waveform shaping unit in a main unit for shaping the waveform of the remote control signal so as to remove an error in the remote control signal, and an infrared carrier remote control signal for the remote control signal shaped by the remote control signal waveform shaping unit in the main unit. And a remote control signal transmitting section in the main unit that transmits the signal to the TV broadcast receiver after the conversion into the form described above.

Also, the remote control signal transmission system of the present invention
In a TV broadcast viewing system in which a main unit and a sub-unit are connected by a remote control signal transmission path and a TV signal transmission path, an infrared transport remote control signal transmitted from a remote control transmitter is received, and a remote control signal is transmitted from the infrared transport remote control signal. A remote control signal receiving unit in a sub unit that extracts the remote control signal, a remote control signal waveform shaping unit in a sub unit that shapes the waveform of the remote control signal so as to remove an error in the remote control signal extracted by the remote control signal receiving unit, A remote control in a sub-unit that modulates a remote control signal shaped by the remote control signal waveform shaping unit in the unit into an RF band carrier control signal suitable for transmission on a remote control signal transmission path and sends the signal to a remote control signal transmission path. A signal modulation unit, and the remote control signal modulation; A remote control signal demodulation section in the main unit for demodulating the RF band wave conveying remote control signals transmitted to the transmission path for the remote control signal from a remote controller signal by,
A remote control signal waveform shaping unit in a main unit for shaping the waveform of the remote control signal so as to remove an error in the remote control signal output by the remote control signal demodulation unit; and a remote control signal waveform shaping unit in the main unit. And a remote control signal transmitting section in the main unit for transmitting the remote control signal to the TV broadcast receiver after converting the remote control signal into the form of an infrared transport remote control signal.

Further, the remote control signal transmission system according to the present invention, in a TV broadcast viewing system in which a main unit and a subunit are connected by a transmission path, receives an infrared transport remote control signal transmitted from a remote control transmitter and receives the infrared transport signal A remote control signal receiving unit in a sub-unit for extracting a remote control signal from the remote control signal, and shaping the waveform of the remote control signal so as to remove an error in the remote control signal extracted by the remote control signal receiving unit; A remote control signal waveform shaping / numerical data generation unit in a sub-unit for generating a numerical data signal indicating a pulse polarity and a pulse width; and a numerical data signal generated by the remote control signal waveform shaping / numerical data generation unit on a transmission path. RF band carrier numerical data signal suitable for transmission Modulation and measures signal modulator in subunits, the numerical data signal RF band wave conveying numerical data signals output by the modulation section to the TV-
A numerical data signal mixing unit in a subunit that mixes with the RF signal and sends the signal to the transmission line; and a main unit that separates and extracts an RF band carrier carrier numerical data signal from the signal transmitted on the transmission line by the numerical data signal mixing unit. A numerical data signal separating unit in the main unit, a numerical data signal demodulating unit in a main unit for demodulating the RF band carrier carrier numerical data signal extracted by the numerical data signal separating unit into a numerical data signal, and the numerical data signal demodulating unit A remote control signal generation unit in the main unit for generating a remote control signal corresponding to the numerical data signal output by the control unit, and converting the remote control signal generated by the remote control signal generation unit into a form of an infrared transport remote control signal, followed by TV broadcasting Configuration having a remote control signal transmitting section in a main unit for transmitting to a receiver It is also possible to.

Still further, according to the remote control signal transmission system of the present invention, the main unit and the subunit are connected by a remote control signal transmission line and a TV signal transmission line.
In a V broadcast viewing system, a remote control signal receiving section in a subunit that receives an infrared transport remote control signal transmitted from a remote control transmitter and extracts a remote control signal from the infrared transport remote control signal, and a remote control extracted by the remote control signal receiving section A remote control signal waveform shaping / numerical data generation unit in a sub-unit for shaping the waveform of the remote control signal so as to remove an error in the signal and generating a numerical data signal indicating the polarity and pulse width of the shaped remote control signal pulse And modulates the numerical data signal generated by the remote control signal waveform shaping / numeric data generation unit into an RF band carrier carrier numerical data signal in a form suitable for transmission on the remote control signal transmission path, and sends out the modulated signal to the remote control signal transmission path. A numerical data signal modulating unit in the subunit; A numerical data signal demodulator in a main unit for demodulating an RF band carrier carrier numerical data signal transmitted onto a remote control signal transmission path by a signal modulator into a numerical data signal; and numerical data output by the numerical data signal demodulator. A remote control signal generator in the main unit for generating a remote control signal corresponding to the signal, and a remote control signal generated by the remote control signal generator converted to an infrared remote control signal and transmitted to a TV broadcast receiver And a remote control signal transmitting unit in the main unit.

[0025]

Next, the present invention will be described in detail with reference to the drawings.

(1) First Embodiment FIG. 1 is a block diagram showing a configuration of a remote control signal transmission system according to a first embodiment of the present invention.

Referring to FIG. 1, the remote control signal transmission system according to the present embodiment employs a transmission path 1 for transmitting an RF band carrier control signal (a remote control signal carried by an RF band) and a TV-RF signal. A main unit 2 installed in the living room, a subunit 3 installed in a private room, and a TV broadcast receiver 4 (paid TV broadcast receiver or the like) and a TV receiver (main) 5 connected to the main unit 2
And a TV receiver (secondary) 6 connected to the subunit 3
And a remote control transmitter 7 for transmitting a remote control signal (infrared transport remote control signal) for controlling the TV broadcast receiver 4. The main unit 2
"Living room" and "Private room" where the subunit 3 is installed
That is just an example.

The TV broadcast receiver 4 receives (receives) an infrared transport remote control signal from the remote control transmitter 7 or the remote control signal transmitting section 17 and outputs a TV baseband signal based on control by the remote control signal (this TV). The baseband signal is distributed in the main unit 2 and sent to the TV receiver (main) 5 and the TV signal modulator 18).

The TV receiver (main) 5 is a TV broadcast receiver 4
Provides the user with a viewing environment (video and sound) based on the TV baseband signal from the TV.

The TV receiver (secondary) 6 uses its own receiving function to transmit a TV-RF signal (TV signal separating unit 12).
) Is received and demodulated, and a viewing environment is provided to the user based on the demodulated TV baseband signal. The above-described demodulation function can be provided in the subunit 3.

When the user watches a TV broadcast in the living room, the remote control transmitter 7 is used in the living room. In this case, the infrared transport remote control signal emitted by the remote control transmitter 7 directly reaches the TV broadcast receiver 4 and controls it.

When a user watches a TV broadcast in a private room, the remote control transmitter 7 is used in a private room (for example,
The same remote control transmitter 7 is carried by the user). In this case, the infrared transport remote control signal emitted by the remote control transmitter 7 reaches the TV broadcast receiver 4 via the subunit 3, the transmission path 1, and the main unit 2,
Control this.

The sub unit 3 includes a remote control signal receiving unit 8
Remote control signal waveform shaping section 9, remote control signal modulation section 10, remote control signal mixing section 11, TV signal separation section 1
2 is included.

The remote control signal receiving section 8 receives (receives) the infrared remote control signal reaching the sub-unit 3 from the remote control transmitter 7 and extracts a remote control signal as a pulse signal from the received infrared remote control signal.

The remote control signal waveform shaping section 9 detects an error existing in the remote control signal extracted by the remote control signal receiving section 8 (when the signal is propagated from the remote control transmitter 7 to the remote control signal receiving section 8 or received by the remote control signal receiving section 8). A pulse width shift occurring at the time of extracting a pulse signal) and removing the error-removed remote control signal from the remote control signal modulator 1
Send to 0.

The remote control signal modulating section 10 modulates the remote control signal from which the error has been removed so as to have a form (RF band carrier control signal) suitable for transmission between the main unit 2 and the subunit 3.

The remote control signal mixing section 11 transmits the remote control signal (RF band carrier remote control signal) modulated by the remote control signal modulating section 10 to the transmission line 1 between the main unit 2 and the subunit 3 at that time. It mixes with the TV-RF signal transmitted using the same transmission path 1 and sends it out.

The TV signal separating section 12 is a TV-RF signal (a signal transmitted from the main unit 2 and arriving at the sub-unit 3,
V signal separating section 12) is separated from the RF band carrier remote control signal transmitted using the same transmission path 1, and the extracted TV-RF signal is output to the TV receiver (sub) 6 Send to

The main unit 2 includes a TV signal mixing unit 13
Remote control signal separation section 14 and remote control signal demodulation section 1
5, a remote control signal waveform shaping section 16, a remote control signal transmitting section 17, and a TV signal modulating section 18.

The TV signal mixing section 13 includes a TV signal modulation section 1
8 converted to TV-RF signal by conversion (modulation)
The signal is sent to the transmission path 1 between the main unit 2 and the sub-unit 3 by being mixed with a remote control signal that is being transmitted using the same transmission path 1 at that time.

The remote control signal separation unit 14 receives the signal from the subunit 3 via the transmission path 1 and reaches the main unit 2.
An F-band wave remote control signal (a signal passed through the TV signal mixing unit 13) is received separately from a TV-RF signal transmitted using the same transmission path 1.

The remote control signal demodulation unit 15 restores (demodulates) the original remote control signal (pulse signal) from the RF band wave carrier remote control signal.

The remote control signal waveform shaping unit 16 is a remote control signal which is a pulse signal restored by the remote control signal demodulation unit 15 (pulse width is shifted due to an error generated at the time of propagation on the transmission path 1 or an error at the time of modulation / demodulation). ), And the remote control signal from which the error has been removed is sent to the remote control signal transmission unit 17.

The remote control signal transmitting section 17 transmits (emits) an infrared transport remote control signal to the TV broadcast receiver 4 based on the remote control signal transmitted from the remote control signal waveform shaping section 16.

[0045] The TV signal modulation section 18 is provided with the TV broadcast receiver 4.
Is converted (modulated) into a TV-RF signal.

FIG. 2 is a block diagram showing an example of the configuration of the remote control signal waveform shaping section 9.

Here, with reference to FIG. 2, a detailed configuration of remote control signal waveform shaping section 9 and remote control signal waveform shaping section 16 will be described. Since the configuration of the remote control signal waveform shaping section 9 is the same as the configuration of the remote control signal waveform shaping section 16, only the configuration of the remote control signal waveform shaping section 9 will be described representatively.

In FIG. 2, remote control signal waveform shaping section 9
Is a storage device 19 including a lower limit / upper limit / shaped value storage unit 20 and a ring buffer 21 (working buffer).
A data processing device 22 including a shaping processing unit 23;
It comprises a first counter 24, a second counter 25, and an oscillator 26 for outputting a reference clock pulse signal.

The lower limit / upper limit / shaped value storage unit 20 in the storage device 19 stores, for each entry, a remote control signal to be supported (a TV broadcast viewing system to which the remote control signal transmission method according to the present embodiment is applied). The lower limit value, the upper limit value, and the idealized shaped value are stored for all types of pulse widths present in all the remote control signals supported by (see FIG. 9).

The ring buffer 2 in the storage device 19
9, the polarity of the pulse and the shaped value of the pulse width are sequentially written and sequentially read out at each step of the remote control signal to be shaped during the operation (FIG. 9).
reference).

The shaping processing means 23 in the data processing device 22
Performs the following processes a to c. a. The pulse width of each step of the input remote control signal before shaping (waveform shaping) is measured using the first counter 24. b. Next, based on the measurement result, the shaping value of each step is determined with reference to the lower limit / upper limit / shaping value storage unit 20, and the determined result is stored in the ring buffer 21. c. Then, from the data stored in the ring buffer 21 in step b (shaped data for each step), the second counter 25 is used to generate a shaped remote control signal pulse.

FIG. 3 is a block diagram showing an example of the configuration of the first counter 24 and the second counter 25.

Here, the detailed configuration of the first counter 24 and the second counter 25 will be described with reference to FIG.

As shown in FIG. 3, the first counter 24
Is composed of a comparator 27 and a counter 28.

The counter 28 is cleared to zero by a reset / start instruction from the shaping processing means 23 and starts counting up in accordance with the reference clock pulse signal from the oscillator 26. The count value can be read out by a request from the shaping processing unit 23.

The comparator 27 compares the count value of the counter 28 with the set value from the shaping means 23, and when the count value reaches the set value, sends a time-up trigger signal to the shaping means 23. Send.

As shown in FIG. 3, the second counter 25
Is composed of a comparator 29 and a counter 30.

The counter 30 is cleared to zero by a reset / start instruction from the shaping means 23, and starts counting up in accordance with a reference clock pulse signal from the oscillator 26.

The comparator 29 compares the count value of the counter 30 with the set value from the shaping means 23, and when the count value reaches the set value, sends a time-up trigger signal to the shaping means 23. Send.

FIG. 4 is a flowchart showing processing of the remote control signal transmission method according to the present embodiment. This processing includes an infrared carrier remote control signal receiving step 401, a remote controller signal waveform shaping step 402, a remote controller signal modulation step 403, an RF band carrier remote control signal sending step 404, and an RF band carrier remote control signal separation step 4
05, a remote control signal demodulation step 406, a remote control signal waveform shaping step 407, and an infrared transport remote control signal transmission step 408.

FIG. 5 is a flowchart showing the flow of the overall operation (processing) of the shaping processing means 23. This processing includes a remote control signal reception end setting step 501, a comparator set value timeout value setting step 502, a remote control signal change determination step 503, and a shaped data generation step 50.
4 and the first counter time-up determination step 505
, A remote control signal reception end setting step 506, a shaped pulse signal output step 507, a second counter time-up determination step 508, and a shaped pulse signal output step 509.

FIG. 6 is a flowchart showing the detailed processing of the shaping data generation step 504 in FIG. This process
Remote control signal receiving determination step 601, count value reading step 602, counter reset / start step 603, shaped value determination step 604, ring buffer writing step 605, remote control signal receiving setting step 606, counter reset / It comprises a start step 607.

FIG. 7 is a flowchart showing the detailed processing of the post-shaping pulse signal output step 507 or 509 in FIG. This processing includes a ring buffer content reading step 701, a data end determination step 702, a pulse signal output step 703, a comparator set value shaping value setting step 704, and a counter reset / start step 7.
05.

FIG. 8 shows a shaping value determination step 60 in FIG.
4 is a flowchart showing a detailed process of No. 4; This processing is performed at a lower limit value / upper limit value / shaped value storage unit reference position head setting step 8
01, a lower limit to upper limit range determination step 802,
A ring buffer writing step 803, a reference position advance step 804, a data remaining determination step 805,
It comprises an error processing step 806.

FIG. 9 is a diagram showing a specific example of the contents of the lower limit value / upper limit value / shaped value storage unit 20 in the storage device 19 and the contents of the ring buffer 21 as mentioned above (FIG. 9). N and m represent positive integers).

Next, the operation of the remote control signal transmission system according to the present embodiment configured as described above will be described in detail.

Referring to FIG. 1, in a TV broadcast viewing system to which the remote control signal transmission method according to the present embodiment is applied, when a user watches a TV broadcast in a living room, the user uses remote control transmitter 7. Operation is direct TV
The broadcast receiver 4 is controlled, and under the control, the TV baseband signal from the TV broadcast receiver 4 is transmitted to the TV receiver (main) 5.
Is provided to provide a viewing environment.

As described above, when the user watches the TV broadcast in the living room, the remote control signal transmission method according to the present embodiment does not affect the viewing behavior at all, and the remote control transmitter 7 controls the user's remote control. The operation (transmission of the infrared transport remote control signal) directly controls the TV broadcast receiver 4.

On the other hand, when the user intends to view a TV broadcast in a private room using the TV broadcast viewing system, the user moves to the private room with the remote control transmitter 7. As such a case, for example, a case can be assumed in which a parent is requested to view in a private room because a child has started homework in a living room.

When the user watches a TV broadcast in a private room, the remote control transmitter 7 is carried by the user to the private room (the room where the subunit 3 is installed). The remote control operation of the user by the transmitter 7 cannot directly reach the TV broadcast receiver 4.

Therefore, the user's remote control operation is transmitted via the remote control signal transmission method according to the present embodiment.

The operation of the remote control signal transmission method according to the present embodiment in such a case will be described below (see FIG. 4).

First, the remote control signal receiving section 8 in the subunit 3 receives (receives) the infrared remote control signal transmitted from the remote control transmitter 7 and extracts the infrared remote control signal (pulse signal) (step 401). ).

The remote control signal waveform shaping section 9 shapes the waveform of the remote control signal from the remote control signal received and extracted by the remote control signal receiving section 8 so as to remove an error at the time of reception or the like (step 402), and removes the error. The subsequent remote control signal (pulse signal whose waveform has been shaped) is sent to the remote control signal modulator 10.

Remote control signal modulating section 10 converts the remote control signal sent from remote control signal waveform shaping section 9 into a form suitable for transmission between main unit 2 and subunit 3 (RF band wave carrier remote control signal). Modulation (step 403).

The remote control signal mixing section 11 converts the RF band carrier remote control signal output by the modulation by the remote control signal modulation section 10 into the transmission path 1 (the main unit 2 and the sub unit 3 to which the TV-RF signal is also transmitted). Transmission path between
(Step 40)
4).

The RF band carrier control signal arriving at main unit 2 passes through TV signal mixing section 13 and is sent to remote control signal separation section 14.

The remote control signal separation section 14 in the main unit 2 separates and extracts the RF band carrier control signal from the TV-RF signal transmitted using the same transmission path (transmission path 1) (step 405). ).

The remote control signal demodulation unit 15 restores (demodulates) the RF band carrier remote control signal separated and extracted by the remote control signal separation unit 14 into a remote control signal in the form of an original pulse signal (step 406).

The remote control signal waveform shaping section 16 again (as in the case of the remote control signal waveform shaping section 9 in the sub-unit 3) outputs the error from the remote control signal output by the demodulation by the remote control signal demodulation section 15 in error. The waveform of the remote control signal is shaped so as to remove (step 40).
7) The remote control signal after the error removal (pulse signal whose waveform is shaped) is sent to the remote control signal transmission unit 17.

The remote control signal transmitting section 17 converts the remote control signal transmitted from the remote control signal waveform shaping section 16 into an infrared transport remote control signal (a signal having the same form as the signal transmitted from the remote control transmitter 7). After the conversion, the infrared transport remote control signal is transmitted (emitted) to the TV broadcast receiver 4 (step 408).

As described above, the same infrared remote control signal transmitted from the remote control transmitter 7 in the private room is transmitted from the remote control signal transmitter 17 of the main unit 2. As a result, the remote control operation (operation of the remote control transmitter 7) by the user in the private room reaches the TV broadcast receiver 4 as in the case of the remote control operation in the living room, and it is possible to control the same.

The transmission of the TV signal at this time is performed as follows.

The TV signal modulator 18 in the main unit 2
Modulates the TV baseband signal output from the TV broadcast receiver 4 into a TV-RF signal.

The TV signal mixing section 13 sends out the TV-RF signal to the transmission path 1 (transmission path between the main unit 2 and the sub-unit 3 where the RF band carrier remote control signal is also transmitted).

[0086] The TV-RF signal arriving at sub-unit 3 passes through remote control signal mixing section 11 and is sent to TV signal separation section 12.

The TV signal separation unit 12 in the subunit 3
Extracts a TV-RF signal from an RF band carrier remote control signal transmitted using the same transmission path (transmission path 1).

The TV receiver (sub) 6 is a TV signal separating unit 1
2 receives and demodulates the TV-RF signal extracted by using the own receiving function, and provides a TV broadcast viewing environment based on the demodulated TV baseband signal.

Next, detailed operations of remote control signal waveform shaping section 9 and remote control signal waveform shaping section 16 for realizing the overall operation of the remote control signal transmission method according to the present embodiment as described above will be described. . Here, the operation of the remote control signal waveform shaping section 9 and the remote control signal waveform shaping section 16
Since the operation is the same as the above, only the operation of the remote control signal waveform shaping section 9 will be described representatively.

First, the overall operation of the shaping processing means 23 in the data processing device 22 in the remote control signal waveform shaping section 9 will be described (see FIGS. 2 and 3).

Referring to FIG. 2, a remote control signal before shaping (waveform shaping) is input to shaping processing means 23 in data processing device 22.

When the remote control signal before shaping is input, the shaping processing means 23 measures the pulse width of each step of the input remote control signal using the first counter 24. Then, based on the measurement result, the pulse width shaping value is obtained by referring to the lower limit value / upper limit value / shaping value storage unit 20 in the storage device 19, and the shaping values are sequentially determined (in a manner as shown in FIG. 9). It is stored and accumulated in the ring buffer 21 (for each step).

When the shaping processing means 23 has received one segment of the remote control signal (one key of the remote control code assigned to the button of the remote control transmitter 7), it completes the steps stored and accumulated in the ring buffer 21. , And sequentially generates and outputs a shaped remote control signal pulse using the second counter 25.

As shown in FIG. 3, the first counter 24
Is used for measuring the pulse width of each step of the remote control signal before shaping and detecting one section of the remote control signal.

The counter 28 in the first counter 24 is
It is cleared to zero by a reset / start instruction from the shaping means 23, and starts counting up in accordance with a reference clock pulse signal from the oscillator 26.

The count value of the counter 28 is
Is input to

The comparator 27 compares the count value with the set value from the shaping means 23, and outputs a time-up trigger signal to the shaping means 23 when the count value reaches the set value. I do. Note that the count value of the counter 28 in the first counter 24 can be read from the shaping processing unit 23.

As shown in FIG. 3, the second counter 25 is used for generating a shaped remote control signal.

The counter 30 in the second counter 25 is
It is cleared to zero by a reset / start instruction from the shaping means 23, and starts counting up in accordance with a reference clock pulse signal from the oscillator 26.

The count value of the counter 30 is calculated by the comparator 29
Is input to

The comparator 29 compares the count value with the set value from the shaping means 23, and outputs a time-up trigger signal to the shaping means 23 when the count value reaches the set value. I do.

Second, referring to FIG. 5, shaping processing means 2
The third specific processing operation will be described in detail.

Upon starting the operation, the shaping processing means 23 sets, as an initial state, information indicating that "the remote control signal has not been received (remote control signal reception has been completed)" (step 501). For example, the remote control signal receiving flag is set to OFF. In this case, in the initial state, the counting operation of the counter 28 in the first counter 24 and the counting operation of the counter 30 in the second counter 25 are assumed to be stopped.

Next, the shaping means 23 sets a timeout value, which is a threshold value for judging “if there is a further pulse interval, one end of the remote control code”, with the set value of the comparator 27. (Step 502).

In the steady state, the shaping processing means 23 receives the input remote control signal (remote control signal before shaping).
(Step 503), and if there is no such change, the first counter 24 times out (the count value becomes equal to or more than the timeout value). Monitoring for the presence (judgment)
Then, if the time has not elapsed (step 505), the second counter 25 monitors (determines) whether or not the time has elapsed (step 508).

If the pulse of the remote control signal before the shaping has a high / low change, the shaping processing means 23 determines in step 503 that “there is a change in the remote control signal” and determines from the count value of the counter 28 Know the pulse width (elapsed time from the previous change) of one step of the remote control signal before shaping, and generate shaping data (pulse polarity and shaping value) for the step from this count value (pulse width) (step). 504). The processing of the shaping data generation step 504 will be described later in detail.

Also, the shaping processing means 23 determines in step 50
If it is determined in step 5 that "the first counter 24 has timed out", it is determined that "the reception of one segment of the remote control code has been completed", and "the remote control signal has not been received (the remote control signal reception end). ) "(Step 506), and then starts outputting the shaped remote control signal pulse in accordance with the shaped data generated in step 504 (step 507). That is, High / L of the pulse output of the first step of the shaped remote control signal.
ow is set, and the pulse output is performed using the specified time (shaped value) for the pulse width of the step as a set value of the comparator 29.

Further, the shaping processing means 23 performs step 5
If it is determined at 08 that “the second counter 25 has timed up”, it is determined that “the specified time (shaped value) for one step pulse width of the shaped remote control signal has elapsed”, and High / L of pulse output of remote control signal
ow is switched, and the pulse output of the next step is performed using the specified time (shaped value) for the pulse width of the next step as the set value of the comparator 29 (step 50).
9).

The processing of the post-shaping pulse signal output step 507 or 509 will be described later in detail.

Third, referring to FIG. 6, a detailed operation in the shaping data generation step 504 will be described.

The shaping processing means 23 performs the following processing as the operation of the shaping data generation step 504.

First, it is determined whether or not reception of a remote control signal is being started, thereby determining whether or not reception of a remote control signal is started (step 601).

That is, if it is determined in step 601 that "the remote control signal is not being received", it means that "the reception of the remote control signal is to be started now". The remote control signal receiving flag is set to ON (step 606), and a reset / start instruction is issued to the counter 28 to measure the pulse width (step 607).

If it is determined in step 601 that "remote control signal is being received", it means that "it is not the start of remote control reception". (Step 602), and issues a reset / start instruction to the counter 28 for the next measurement (Step 60).
3).

Further, a shaping value is determined from the value read in step 602 (step 604), and the polarity of the pulse of the remote control signal being received and the shaping value determined in step 604 are used as shaping data for the current step as a ring buffer. 21 (step 605). The processing of the shaping value determination step 604 will be described later in detail.

Fourth, referring to FIG. 7, a detailed operation in the post-shaping pulse signal output step 507 or 509 will be described.

The shaping processing means 23 performs the following processing as the operation of the post-shaping pulse signal output step 507 or 509.

First, the shaped data (polarity and shaped value) sequentially written into the ring buffer 21 (for each step in which the processing of step 605 is performed) is read (step 701). It is determined whether or not the data is not the end (step 702).

If it is determined in step 702 that "the data is over (the shaped data could not be read)",
Since it means that the data of one section of the remote control code has already been output, the process is terminated here.

On the other hand, if it is determined in step 702 that the data is not the end (the shaped data has been read out in step 701), the output of the shaped remote control signal according to the polarity of the pulse in the shaped data Is set (step 703), the read shaped value (the shaped value in the shaped data) is set as the set value of the comparator 29 (step 704), and a reset / start instruction is issued to the counter 30 (step 705).

Fifth, a detailed operation in the shaping value determination step 604 will be described with reference to FIG.

The shaping processing means 23 performs the following processing as the operation of the shaping value determination step 604 (the operation of determining the shaping value from the value (count value) read from the counter 28 in the count value reading step 602).

First, as a preparation, the reference position of the lower limit value / upper limit value / shaped value storage unit 20 is set at the beginning (entry # in FIG. 9).
0) to prepare for reading data stored in each entry (step 801).

Next, the lower limit value and the upper limit value of the entry at the current reference position are read, and whether or not the value read from the counter 28 in the count value reading step 602 is within the range from the lower limit value to the upper limit value is determined. It is determined (checked) (step 802).

If it is determined in step 802 that “the value read from the counter 28 is within the range from the lower limit to the upper limit”, the shaped value stored in the entry is read, and the ring buffer 21 Then, both the polarity of the pulse at that time and the shaping value are written (corresponding) as shaping data in that step (step 803).

If it is determined in step 802 that "the value read from the counter 28 is not within the range from the lower limit to the upper limit", the reference position is advanced to the next entry (step 804). It is determined whether or not data still exists (whether or not the next entry exists) (step 805).

In step 805, "no more data"
That is, "the value read from the counter 28 does not fall within the range between the lower limit value and the upper limit value set in the lower limit value / upper limit value / shaped value storage unit 20 even if all entries are referred to"
When it is determined that the remote control signal is not recognized as a remote control signal in at least the TV broadcast viewing system, the terminal device performs some error processing or the like as necessary (step 806).

On the other hand, if it is determined in step 805 that “data still exists”, the flow returns to step 802 to repeat the above check.

(2) Extension of First Embodiment Regarding the remote control signal transmission system according to the first embodiment, the following extensions a to d can be considered.

A. In the present embodiment, waveform shaping is performed by remote control signal waveform shaping section 9 and remote control signal waveform shaping section 16.
And in two places. On the other hand, if it is verified that one or the other is sufficient by devising the circuit, the configuration may be such that the waveform shaping is performed on only one (only the subunit 3 side or the main unit 2 side). Absent. For example, if all the errors generated in the subunit 3, the transmission path 1, and the main unit 2 can be corrected only by the remote control signal waveform shaping section 16 in the main unit 2, the remote control signal waveform shaping section 9 becomes unnecessary. In addition, simplification and cost reduction of the subunit 3 can be achieved.

B. In the present embodiment, the same transmission line 1 is used, and the RF band carrier remote control signal and the TV-RF
Signals are being transmitted. On the other hand, both signals can be transmitted using different transmission paths (transmission path for remote control signal and transmission path for TV signal). In this case, the TV signal mixing section 13 and the remote control signal separating section 14 on the main unit 2 side and the remote control signal mixing section 11 and the TV signal separating section 12 on the sub unit 3 side are not required, and the main unit 2 and the sub unit 3 are unnecessary. Can be simplified and the cost can be reduced. By the way, in this case, the remote control signal modulation section 10 in the subunit 3 transmits the modulated RF band carrier remote control signal to the remote control signal demodulation section 15 in the main unit 2 via the remote control signal transmission path. Send to And a remote control signal demodulation unit 1
5 demodulates the RF band wave carrier remote control signal and sends the demodulated remote control signal to the remote control signal waveform shaping section 16.

C. In the present embodiment, it is assumed that transmission between the main unit 2 and the subunit 3 is performed using a wired transmission path 1 such as a coaxial cable.
On the other hand, the transmission between the main unit 2 and the subunit 3 may be realized by wireless transmission using radio waves or the like. In this case, the RF band wave carrier remote control signal and the TV-
The multiplexing method (mixing method) with the RF signal is not particularly limited, and a method such as frequency multiplexing or time multiplexing is conceivable. Further, similarly to the above b, the RF band carrier remote control signal and the TV-RF signal can be transmitted separately without being multiplexed (mixed).

D. In the present embodiment, the remote control transmitter 7
It is assumed that the signal transmitted from the remote controller is an infrared transport remote control signal. However, as mentioned above, it is also possible to use a remote control signal carried by an electromagnetic wave including a band of light other than infrared light instead of the infrared carry remote control signal.

(3) Second Embodiment FIG. 10 is a block diagram showing a configuration of a remote control signal transmission system according to a second embodiment of the present invention.

Referring to FIG. 10, the remote control signal transmission method according to the present embodiment employs an RF band carrier carrier numerical data signal (a signal carried by an RF band wave, in which the polarity and the shaping value of the pulse of the remote control signal are represented by numerical values. A transmission line for transmitting a numerical data signal and a TV-RF signal, a main unit 2 installed in a living room, a subunit 3 installed in a private room, and the main unit 2. TV broadcast receiver 4 and TV receiver (main) 5
And a TV receiver (secondary) 6 connected to the subunit 3
And a remote control transmitter 7 for transmitting a remote control signal (infrared transport remote control signal) for controlling the TV broadcast receiver 4. The main unit 2
"Living room" and "Private room" where the subunit 3 is installed
That is just an example.

The main unit 2 includes a TV signal mixing unit 13
And a numerical data signal separating section 140 for separating and extracting only the RF band carrier numerical data signal from the signal transmitted on the transmission path 1; and an RF band carrier numerical data signal extracted by the numerical data signal separating section 140 And a remote control signal corresponding to the numerical data signal (a signal having the polarity and the shaping value of the pulse of the remote control signal) output by the numerical data signal demodulator 150. A remote control signal generating section 160, a remote control signal transmitting section 17 for converting a remote control signal generated by the remote control signal generating section 160 into a form of an infrared transport remote control signal, and transmitting the converted signal to the TV broadcast receiver 4; And a part 18.

As described above, in the main unit 2 in the present embodiment, the remote control signal generating section 160 is used instead of the remote control signal waveform shaping section 16 in the first embodiment.
Is mounted, and accompanying the numerical data signal separation unit 14
0 (the remote control signal separation unit 14 in the first embodiment)
) And a numerical data signal demodulation unit 150 (first
(Corresponding to the remote control signal demodulation unit 15 in the first embodiment).

The subunit 3 receives a remote control signal transmitted from the remote control transmitter 7 and extracts a remote control signal from the remote control signal, and the remote control signal received by the remote control signal receiver 8. A remote control signal waveform shaping / numeric data generation unit 90 that shapes the waveform of the remote control signal so as to remove an error in the signal, and generates a numerical data signal indicating the polarity and pulse width of the shaped remote control signal.
A numerical data signal modulating section 100 for modulating the numerical data signal generated by the remote control signal waveform shaping / numerical data generating section 90 into an RF band carrier numerical data signal in a form suitable for transmission on the transmission line 1; Data signal modulator 1
It is configured to include a numerical data signal mixing unit 110 that mixes the RF band wave carrier numerical data signal output by 00 with the TV-RF signal and sends it out to the transmission line 1, and a TV signal separation unit 12.

As described above, in the subunit 3 in the present embodiment, the remote control signal waveform shaping / numerical data generation unit 90 is mounted in place of the remote control signal waveform shaping unit 9 in the first embodiment, and is attached thereto. A numerical data signal modulator 100 (corresponding to the remote controller signal modulator 10 in the first embodiment) and a numerical data signal mixer 110 (corresponding to the remote controller signal mixer 11 in the first embodiment) are mounted. Will be done. The “remote control signal waveform shaping function” of the remote control signal waveform shaping / numerical data generation unit 90 is used to realize the “remote control signal waveform shaping function” of the remote control signal waveform shaping unit 9 in the first embodiment. It is realized by the same configuration and operation as the configuration and operation (see FIGS. 2 and 3 and FIGS. 5 to 9).

In the remote control signal transmission system according to the first embodiment, the remote control signal (pulse signal) whose waveform has been shaped by the remote control waveform shaping section 9 in the subunit 3 is transmitted to the main unit 2. .

On the other hand, in the remote control signal transmission method according to the present embodiment, the following specific operation is performed.

That is, after shaping the waveform of the remote control signal received from the remote control signal receiving unit 8, the remote control signal waveform shaping / numeric data generation unit 90 in the subunit 3 sets the polarity and pulse width of the pulse of the remote control signal. Is generated, and a numerical data signal having the numerical data is sent to the numerical data signal modulator 100.

Numerical data signal modulating section 100 performs modulation processing on the numerical data signal as in the case of remote control signal modulating section 10 in the first embodiment, and outputs an RF band carrier numerical data signal. Further, the numerical data signal mixing section 110 performs mixing processing of the RF band carrier numerical data signal with the TV-RF signal as in the remote control signal mixing section 11 in the first embodiment (the transmission processing is performed in this manner). An RF band carrier numerical data signal is transmitted from the subunit 3 to the main unit 2 via the path 1).

The numerical data signal separating section 140 in the main unit 2 extracts the RF band carrier numerical data signal from the signal on the transmission line 1 as in the remote control signal separating section 14 in the first embodiment. Perform separation processing. Further, numerical data signal demodulation section 150 performs demodulation processing on the numerical data signal as in the case of remote control signal demodulation section 15 in the first embodiment, and sends the numerical data signal to remote control signal generation section 160. .

Then, remote control signal generating section 160
A remote control signal is generated from the numerical data indicated by the numerical data signal (numerical data indicating the pulse polarity and the pulse width), and the remote control signal is transmitted to the remote control signal transmission unit 17.

The operation of the remote control signal transmission method according to the second embodiment other than the above is the same as the operation of the remote control signal transmission method according to the first embodiment.
I omit the detailed explanation.

The extension of the modes b, c, and d in the “extension of the first embodiment” described in (2) above also applies to the remote control signal transmission method according to the second embodiment. Equally valid.

[0148]

As described above, according to the present invention,
The following effects are produced.

The first effect is that the TV broadcast receiver (paid TV)
When operating a broadcast receiver, etc.) with the remote control transmitter, T
When operating via a sub-unit and a main unit from a room (such as a private room) different from a specific room such as a living room where a V broadcast receiver is installed, the same operation as when directly operating in the specific room is performed. The point is that sensitivity (a reach distance and an angle range) can be achieved.

The reason why such an effect occurs is that the quality of the infrared transport remote control signal and the like emitted from the remote control signal transmission unit in the main unit is changed by executing the waveform shaping. This is because the quality is maintained at the same level.

The second effect is that, when the first effect is realized, there is no restriction on the remote control code. That is, it is possible to support multi-vendors, and it is also possible to cope with the addition of a remote control code after the introduction of the remote control signal transmission method according to the present invention. Can be replaced by simply replacing the connection.

The reason why such an effect occurs is that since the waveform shaping is managed only by the pulse width of the remote control signal, it is not affected by the difference or change of the remote control code.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a remote control signal transmission system according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating an example of a configuration of a remote control signal waveform shaping unit in FIG. 1;

FIG. 3 is a block diagram showing an example of a configuration of a first counter and a second counter in FIG. 2;

FIG. 4 is a flowchart showing processing of the remote control signal transmission method shown in FIG. 1;

FIG. 5 is a flowchart showing processing of a remote control signal waveform shaping section shown in FIG. 2;

FIG. 6 is a flowchart showing a detailed process of a shaping data generation step in FIG. 5;

FIG. 7 is a flowchart showing a detailed process of a post-shaping pulse signal output step in FIG. 5;

FIG. 8 is a flowchart showing a detailed process of a shaping value determination step in FIG. 6;

FIG. 9 is a diagram illustrating an example of storage contents of a lower limit value / upper value / shape value storage unit and a ring buffer in FIG. 2;

FIG. 10 is a block diagram showing a configuration of a remote control signal transmission system according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission path 2 Main unit 3 Subunit 4 TV broadcast receiver 5 TV receiver (main) 6 TV receiver (sub) 7 Remote control transmitter 8 Remote control signal receiving part 9, 16 Remote control signal waveform shaping part 10 Remote control signal modulation part Reference Signs List 11 remote control signal mixing unit 12 TV signal separation unit 13 TV signal mixing unit 14 remote control signal separation unit 15 remote control signal demodulation unit 17 remote control signal transmission unit 18 TV signal modulation unit 19 storage device 20 lower limit value / upper limit value / shaped value storage unit 21 Ring buffer 22 Data processing device 23 Shaping processing means 24 First counter 25 Second counter 26 Oscillator 27, 29 Comparator 28, 30 Counter 90 Remote control signal waveform shaping / numerical data generator 100 Numeric data signal modulator 110 Numeric data Signal mixing unit 140 Numerical data signal separation unit 150 Number Data signal demodulator 160 remote control signal generator

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 9/00 321

Claims (10)

[Claims] 1. A TV broadcast viewing system in which a main unit and a sub unit are connected by a transmission path,
A remote control signal receiving section in a subunit that receives an infrared remote control signal transmitted from a remote control transmitter and extracts a remote control signal from the infrared remote control signal, and removes an error in the remote control signal extracted by the remote control signal receiving section. A remote control signal waveform shaping unit in a subunit for shaping the waveform of the remote control signal, and an RF band wave in a form suitable for transmission on a transmission path by the remote control signal shaped by the remote control signal waveform shaping unit in the subunit A remote control signal modulating unit in the sub-unit for modulating the carrier remote control signal; and an RF band carrier remote control signal output by the remote control signal modulating unit,
A remote control signal mixing unit in the subunit that mixes with the V-RF signal and sends the signal to the transmission line; and a main unit that separates and extracts the RF band carrier remote control signal from the signal transmitted on the transmission line by the remote control signal mixing unit. A remote control signal separation unit, a remote control signal demodulation unit in a main unit that demodulates the RF band carrier remote control signal extracted by the remote control signal separation unit into a remote control signal,
The remote control signal waveform shaping unit in the main unit that shapes the waveform of the remote control signal so as to remove an error in the remote control signal output by the remote control signal demodulation unit, and the remote control signal waveform shaping unit in the main unit. A remote control signal transmission section in a main unit for transmitting the remote control signal to a TV broadcast receiver after converting the remote control signal into a form of an infrared transport remote control signal. 2. In a TV broadcast viewing system in which a main unit and a subunit are connected by a remote control signal transmission path and a TV signal transmission path, an infrared transport remote control signal transmitted from a remote control transmitter is received and the infrared transport is received. A remote control signal receiving unit in a sub unit that extracts a remote control signal from a remote control signal, and a remote control signal waveform in the sub unit that shapes a waveform of the remote control signal so as to remove an error in the remote control signal extracted by the remote control signal receiving unit A shaping section and a remote control signal shaped by the remote control signal waveform shaping section in the subunit are modulated into an RF band carrier carrier remote control signal in a form suitable for transmission on the remote control signal transmission path, and sent out to the remote control signal transmission path. A remote control signal modulating unit in the subunit; A remote control signal demodulation unit in the main unit that demodulates the RF band carrier carrier remote control signal transmitted onto the remote control signal transmission path by the control signal modulation unit into a remote control signal, and an error in the remote control signal output by the remote control signal demodulation unit. A remote control signal waveform shaping unit in the main unit for shaping the waveform of the remote control signal so as to remove the remote control signal, and the remote control signal shaped by the remote control signal waveform shaping unit in the main unit is converted into an infrared transport remote control signal. And a remote control signal transmitting section in the main unit for transmitting to the TV broadcast receiver. 3. A lower limit / upper limit / shape value storage unit storing a lower limit value, an upper limit value, and a shaping value for all types of pulse widths present in a supported remote control signal, and a shaping target remote controller. For each step of the signal,
A ring buffer in which the polarity of the pulse and the shaping value of the pulse width are sequentially written and sequentially read out, and the pulse width is measured for each step of the remote control signal before shaping, and the lower limit value, the upper limit value, and the shaping value are stored from the measurement result. A shaping process for determining a shaping value with reference to the section, storing the determined result in the ring buffer, and generating a shaped remote control signal pulse from the shaping data for each step stored in the ring buffer as described above. 3. The remote control signal transmission system according to claim 1, wherein the remote control signal waveform shaping unit having the means realizes a waveform shaping function of the remote control signal. 4. The remote control signal transmission system according to claim 1, wherein the shaping of the waveform of the remote control signal is performed only by the main unit. 5. The remote control signal transmission method according to claim 1, wherein the shaping of the waveform of the remote control signal is performed only in the subunit. 6. A TV broadcast viewing system in which a main unit and a sub unit are connected by a transmission path,
A remote control signal receiving section in a subunit that receives an infrared remote control signal transmitted from a remote control transmitter and extracts a remote control signal from the infrared remote control signal, and removes an error in the remote control signal extracted by the remote control signal receiving section. A remote control signal waveform shaping / numerical data generation unit in a sub-unit for shaping the waveform of the remote control signal and generating a numerical data signal indicating the polarity and pulse width of the shaped remote control signal, and the remote control signal waveform A numerical data signal modulator in a subunit for modulating a numerical data signal generated by the shaping / numerical data generator into an RF band carrier numerical data signal in a form suitable for transmission on a transmission line; and the numerical data signal modulator The RF band carrier numerical data signal output by the TV-RF signal A numerical data signal mixing section in the sub-unit for mixing and sending out to the transmission path; and a numerical value in the main unit for separating and extracting the RF band carrier carrier numerical data signal from the signal transmitted on the transmission path by the numerical data signal mixing section. A data signal separator, a numerical data signal demodulator in a main unit that demodulates the RF band carrier carrier numerical data signal extracted by the numerical data signal separator into a numerical data signal, and a signal output by the numerical data signal demodulator. A remote control signal generation unit in the main unit for generating a remote control signal corresponding to the numerical data signal, and a remote control signal generated by the remote control signal generation unit converted to an infrared remote control signal and transmitted to a TV broadcast receiver. And a remote control signal transmitting section in the main unit for transmitting to the main unit. The remote control signal transmission method that. 7. A TV broadcast viewing system in which a main unit and a subunit are connected by a remote control signal transmission path and a TV signal transmission path, receiving an infrared transport remote control signal transmitted from a remote control transmitter, and receiving the infrared transport signal. A remote control signal receiving unit in a sub-unit for extracting a remote control signal from the remote control signal, and shaping the waveform of the remote control signal so as to remove an error in the remote control signal extracted by the remote control signal receiving unit; A remote control signal waveform shaping / numerical data generator in a sub-unit for generating a numerical data signal indicating a pulse polarity and a pulse width; and a numerical data signal generated by the remote controller signal waveform shaping / numerical data generator for a remote control signal. RF band carrier number suitable for transmission on transmission line A numerical data signal modulating section in the sub-unit, which modulates into a value data signal and sends it out to the remote control signal transmission path, and a numerical value of the RF band wave carrier numerical data signal transmitted on the remote control signal transmission path by the numerical data signal modulating section. A numerical data signal demodulation unit in the main unit that demodulates to a data signal, and a remote control signal generation unit in the main unit that generates a remote control signal corresponding to the numerical data signal output by the numerical data signal demodulation unit,
After converting the remote control signal generated by the remote control signal generation unit into a form of an infrared remote control signal,
A remote control signal transmission unit in a main unit for transmitting to a broadcast receiver. 8. A lower limit / upper limit / shape value storage unit for storing a lower limit value, an upper limit value, and a shaping value for all types of pulse widths present in a supported remote control signal, and a shaping target remote controller. For each step of the signal,
A ring buffer in which the polarity of the pulse and the shaping value of the pulse width are sequentially written and sequentially read out; a pulse width is measured for each step of the remote control signal before shaping; A shaping process for determining a shaping value with reference to the section, storing the determined result in the ring buffer, and generating a shaped remote control signal pulse from the shaping data for each step stored in the ring buffer as described above. The remote control signal transmission method according to claim 6 or 7, wherein a remote control signal waveform shaping function is realized by a remote control signal waveform shaping / numeric data generation unit having means. 9. A remote control signal carried by an electromagnetic wave including up to a band of light other than infrared light instead of the infrared carry remote control signal. 9. The remote control signal transmission method according to claim 5, claim 6, claim 7, or claim 8. 10. A transmission system according to claim 1, wherein transmission between the main unit and the sub-unit is realized by wireless transmission instead of transmission by a transmission line. The remote control signal transmission method according to claim 5, claim 6, claim 7, claim 8, or claim 9.