JPH10271229A - Remote control signal transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control signal transmitter which uses a portable telephone set to remotely control an external device by generating and transmitting a remote control signal corresponding to an operation key to the external device based on a tone signal generated from a speaker at the time of operation of various keys arranged on the portable telephone set. SOLUTION: The tone signal outputted from a speaker 321 based on operation of various keys in a key array K on a portable telephone set 3 is acquired through a microphone 21. After the tone signal acquired through the microphone 21 is detected by a tone signal detection part 22, an operation key is detected based on a table in a memory 51, and pulse signal data corresponding to this detected key is converted to a prescribed pulse signal by a transmission pulse conversion part 24 and is transmitted out from an infrared light emitting part 25 to an infrared light reception part 41 of a communication KARAOKE (orchestration without lyrics) device 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control signal transmitting device for transmitting a signal to a remote control signal receiving device provided in an external device for performing remote control of various external devices such as a karaoke device. By creating a remote control signal corresponding to the operation key based on a tone signal generated from a speaker when operating various keys arranged on the mobile phone and transmitting the signal to an external device,
The present invention relates to a remote control signal transmission device that enables remote control of an external device using a mobile phone.

[0002]

2. Description of the Related Art In recent years, remote control devices have been attached to a wide variety of devices, and accordingly, remote control devices have also been diversified. In general, a remote control device is provided with various keys and an infrared light emitting unit, and a pulse signal corresponding to an operated key (corresponding to a specific function of an external device to be remote-controlled) Is superimposed on the infrared light emitted from the infrared light emitting unit in a pulse modulated state, and transmitted to the infrared light receiving unit of the external device. On the side of the external device, the pulse modulation signal is extracted from the infrared light received by the infrared light receiving unit and demodulated to recognize the pulse signal, and various functions in the external device are selected based on the pulse signal. .

As described above, remote control is performed between the remote control device and the external device by transmitting and receiving infrared rays. The modulation frequency of the modulation pulse corresponding to each key in the remote control device depends on the manufacturer and the model of the external device. At present, the external devices are different from each other, and one remote control device is generally attached to each external device.

[0004] For example, when a karaoke box or the like is used by a plurality of people, one karaoke device is shared by all, and therefore, a remote control device attached to the karaoke device is also shared by one. become.

[0005]

However, in a conventional karaoke box or the like, as described above, a single remote control device is shared by a plurality of people, so that when another person uses the remote control device, If the remote control device cannot be used, and if the remote control device is located at a remote location, you must go to the place where the remote control device is located and use it.
Some aspects are difficult to use. At this time, it is conceivable to prepare a large number of remote control devices for each room. However, in such a case, the cost of the karaoke box is extremely high, and if the model of the karaoke device is changed, these remote control devices are required. It is not practical because all the devices need to be changed.

When the karaoke device arranged in the karaoke box is a communication karaoke device, various software programs such as games and questionnaires are often provided in addition to the karaoke performance function. In such a case, when there is only one remote control device, there is a problem that a game or the like can be enjoyed by only one person. Furthermore, some people do not want to touch a remote control device used by another person, and when they have to share the remote control device as described above, they feel very unpleasant.

In recent years, portable telephones or PHs
The penetration rate of personal portable small telephones such as S (PERSONAL HANDY PHONE SYSTEM) is increasing dramatically. In these mobile phones or PHS, various keys arranged on the upper surface thereof, for example, a number key or
When each key such as "#" or "*" is operated, a tone sound corresponding to the operation key is emitted from the speaker. A different tone is set for each key in the tone sound. Therefore, it is naturally possible to identify the operated key by identifying the tone sound.

In view of the above circumstances, it would be very convenient if a small telephone such as a portable telephone could be used as a personal remote controller. However, a device that can use such a portable small telephone as a remote controller has been proposed. It is not at present.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and a remote control signal corresponding to an operation key based on a tone signal generated from a speaker when operating various keys provided in a portable telephone. It is an object of the present invention to provide a remote control signal transmission device that enables remote control of an external device by using a mobile phone by creating and transmitting the remote control signal to an external device.

[0010]

According to a first aspect of the present invention, there is provided a remote control signal transmitting apparatus which is attached to a portable telephone and performs remote control of various external devices. A tone signal acquisition unit that acquires a tone signal output from a speaker based on an operation of various keys provided in the mobile phone, and a key operated by a mobile phone based on the tone signal acquired by the tone signal acquisition unit. Key detecting means for detecting, and a pulse signal generating / outputting means for generating a pulse signal corresponding to the key detected through the key detecting means and outputting the pulse signal to an external device. And

According to the first aspect of the present invention, the tone signal output from the speaker is acquired through the tone signal acquiring means and the tone signal is acquired by the tone signal acquiring means based on the operation of various keys on the portable telephone. The key operated by the mobile phone is detected by the key detecting means based on the tone signal. Thereafter, a pulse signal corresponding to the key detected by the key detection means is created through the pulse signal creation / output means, and the pulse signal is output to the external device.

As described above, in the remote control signal transmitting device according to the first aspect of the present invention, by attaching to the portable telephone, the remote control signal transmitting device corresponds to the operation key based on the tone signal generated from the speaker when operating the various keys arranged on the portable telephone. This makes it possible to create a remote control signal and transmit it to an external device, thereby enabling remote control of the external device to be performed using a mobile phone.

According to a second aspect of the present invention, there is provided the remote control signal transmitting apparatus according to the first aspect, wherein the external device is a karaoke device, and the remote control signal transmitting device is operated based on an operation of a number key on the mobile phone. The feature is that karaoke songs can be selected. In the remote control signal transmitting device according to the second aspect, it is possible to select a karaoke tune to be played by the karaoke device by operating the number key of the mobile phone, whereby each individual can use his / her own mobile phone. Karaoke songs can be freely selected.

According to a third aspect of the present invention, in the remote control signal transmitting apparatus according to the second aspect, the portable telephone is provided with a number storage means, and the number storage means stores a selection number of a karaoke song. It is characterized by being stored. In the remote control signal transmitting device according to the third aspect, it is possible to previously store the selection number of the karaoke song in the number storage means provided in the mobile phone. Therefore, for the desired karaoke song, the selection number for each singing is selected. Need not be input, and karaoke songs can be quickly sung.

According to a fourth aspect of the present invention, there is provided a remote control signal transmitting apparatus according to any one of the first to third aspects, wherein the remote control signal transmitting apparatus covers a speaker of the mobile phone so as to cover a speaker of the mobile phone. It has a clip structure that can be attached to a telephone.
Since the remote control signal transmitting device according to the fourth aspect has the clip structure, it is possible to perform attachment and detachment from the mobile phone with one touch.

According to a fifth aspect of the present invention, there is provided a remote control signal transmitting apparatus according to any one of the first to fourth aspects, wherein the tone signal obtaining means has a microphone, and the microphone is capable of transmitting the remote control signal. When the device is attached to a mobile phone, it is arranged near a speaker of the mobile phone. In the remote control signal transmitting device according to the fifth aspect, the microphone of the tone signal obtaining means is arranged near the speaker of the mobile phone when attached to the mobile phone, so that the tone signal obtaining means is connected to the speaker of the mobile phone via the microphone. , The tone signal can be reliably obtained.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A remote control signal transmitting apparatus according to the present invention will be described below in detail with reference to the drawings based on an embodiment in which the present invention is embodied as a remote control signal transmitting apparatus for a communication karaoke apparatus. First, a schematic configuration of a remote control signal transmission device according to the present embodiment will be described with reference to FIG. FIG. 1 is an explanatory diagram schematically showing a state in which the remote control signal transmission device is attached to a mobile phone.

In FIG. 1, a remote control signal transmission device (hereinafter abbreviated as a remote control device) 1 has one end (FIG. 1).
An infrared light emitting section 25 is provided at the middle and upper end portions, and a concave groove 28 is formed on both left and right sides thereof. The concave groove 28 allows the remote control device 1 to be connected to the mobile phone 3 (so-called,
When it is attached to a PHS (including a PHS), it acts to expose the antenna T of the mobile phone 3 to the outside. As shown in FIG. 1, the remote control device 1 includes a mobile phone 3 in a direction indicated by an arrow.
Attached to. The detailed configuration of the remote control device 1 will be described later.

The cellular phone 3 has a key row K on its upper surface.
(Numerical keys (including numeric keys 0 to 9), function keys (for example, “#” key, “*” key, etc.), and other keys are arranged).
Above the key row K, a liquid crystal display LCD is provided. A speaker 31 is arranged above the liquid crystal display LCD, and a microphone M is arranged below the key row K. Note that an antenna T is attached to the upper end of the mobile phone 3.

Next, a structure for attaching the remote control device 1 having the above-described configuration to the mobile phone 3 will be described with reference to FIG. FIG. 2 is a cross-sectional view schematically showing a state where remote control device 1 is attached to mobile phone 3. In FIG.
The remote control device 1 includes a base member 1A and a base member 1A.
And a rotation member 1B rotatably supported via a shaft support 1C, and an attachment is provided between the base member 1A and the rotation member 1B on the right side of the shaft support 1C. A biasing spring 29 is interposed. Thereby, the remote control device 1 has a known clip structure. Based on such a clip structure, the remote control device 1 can perform attachment and detachment to and from the mobile phone 3 with one touch. Also,
On the lower surface of the rotating member 1B and the inner wall surface of the base member 1A,
A cushion material 27 made of rubber or the like is attached to each. Further, a recess 5 is provided on the inner upper surface of the base member 1A.
0 is formed, and the microphone 21 is arranged at the center position of the concave portion 50.

In order to mount the remote controller 1 constructed as described above on the portable telephone 3, the rear end (right end in FIG. 2) of the remote controller 1 is gripped, and the rotating member 1B is pushed by the biasing spring 29. Is pressed against the base member 1A against the urging force to rotate the rotating member 1B around the shaft support 1C. Thereby, the front end side (left end side in FIG. 2) of the rotating member 1B is rotated upward, and in this state, the mobile phone 3 is placed between the rotating member 1B and the base member 1A as shown in FIG. insert.

At this time, the speaker 31 of the mobile phone 3
As shown in FIG. 2, the remote controller is disposed at a position near the microphone 21 in the remote control device 1 so as to face each other. As described above, the microphone 21 of the remote control device 1 is connected to the speaker 3 of the mobile phone 3 while the remote control device 1 is attached to the mobile phone 3.
1 so that the microphone 2
Thus, the tone signal can be reliably obtained from the speaker of the mobile phone 31 via the communication terminal 1. Note that the antenna T of the mobile phone 3 is exposed to the outside through the concave groove 28 of the remote control device 1.

Next, a control system of the remote controller 1 will be described with reference to FIG. FIG. 3 is a block diagram illustrating an electrical configuration of the remote control device 1. In FIG. 3, the remote control device 1 is basically configured around an MPU 23 which is a one-chip CPU, and the entire remote control device 1 is controlled via the MPU 23. The MPU 23 includes a tone signal detection unit 22, a transmission pulse conversion unit 24, and
The memory 51 is connected.

Here, the tone signal detecting section 22 receives a tone signal 32 which is input based on the operation of each key of the key row K of the mobile phone 3, emitted from the speaker 31, and then picked up via the microphone 21. The operation for detecting is performed.

The memory 51 is provided with a table in which tone signals corresponding to each key in the key row K of the portable telephone 3 and pulse signal data corresponding to each tone signal are stored in advance. MPU23,
Based on the tone signal detected by the tone signal detector 22, a key in the key row K operated by referring to the table of the memory 51 is detected, and pulse signal data corresponding to the detected key is transmitted. Pulse converter 2
4 is output.

Further, the transmission pulse conversion unit 24 includes an MPU
Based on the pulse signal data output from 23, pulse modulation is performed at a predetermined frequency to generate a pulse signal and output to the infrared light emitting unit 25. Then, the infrared light emitting unit 25 is configured to superimpose the pulse signal generated by the transmission pulse converting unit 24 on the infrared light to control the infrared remote control signal 2
6 is transmitted to the infrared receiver 41 of the communication karaoke apparatus 4 for output.

As shown in FIG. 3, the portable telephone 3 is provided with a memory 52. The memory 52 stores a karaoke song used in the communication karaoke apparatus 4 in addition to a desired telephone number. The music selection number is stored. Here, when the music selection number of the karaoke tune is read from the memory 52 in the mobile phone 3, a tone signal 32 corresponding to the music selection number is emitted from the speaker 31, and the microphone 21, the tone signal detection unit 22 , Memory 5
1. Based on the actions of the MPU 23 and the transmission pulse converter 24, an infrared remote controller signal 26 including pulse data corresponding to the music selection number is transmitted from the infrared emitter 25 to the infrared receiver 41 of the communication karaoke apparatus 4. . Therefore, by storing the song selection number of the karaoke song in the memory 52 provided in the mobile phone 3 in advance, it is not necessary to input the song selection number every time the desired karaoke song is sung, and the karaoke song can be quickly performed. Can be sung.

Next, a case where a plurality of remote control devices 1 are used for the communication karaoke device 4 will be described with reference to FIG. FIG. 4 is an explanatory diagram schematically showing a case where a plurality of remote control devices 1 are used for the communication karaoke device 4.

In FIG. 4, when a karaoke box is used by a plurality of persons, each person attaches the remote control device 3 to his / her own mobile phone 3 and inputs a desired karaoke song selection number via the key row K of the mobile phone 3. input. Thus, by operating the number keys in the key row K of the mobile phone 3, it is possible to select a karaoke tune to be played by the karaoke apparatus 4, and each individual can use his or her own mobile phone 3. Karaoke songs can be freely selected.

Next, the operation of transmitting the infrared remote control signal 26 from the infrared light emitting section 25 based on the tone signal 32 output from the portable telephone 3 in the remote control device 1 configured as described above will be described with reference to FIG. . FIG. 5 shows the infrared remote control signal 26 corresponding to the tone signal 32.
5 is a flowchart of a remote control signal transmission program for transmitting a remote control signal. Here, based on the continuous operation of the “#” key,
#> Is determined, and <**> based on the continuous operation of the “*” key is canceled. Of course, these can be freely changed. In addition, here, other functions will not be described, but similarly to the above, for example, <# 0>
It is also possible to set the applause as "applause", "# 1" to stop playing, and "## 2" to set a trailing cut.

In FIG. 5, to transmit the infrared remote control signal 26 corresponding to the tone signal 32, first, in step (hereinafter abbreviated as S) 1, the tone signal 32 generated from the speaker 31 of the portable telephone 3 is transmitted. Is microphone 21
, And it is determined whether or not the tone signal is detected by the tone signal detector 22. If the tone signal detector 22 has not detected the tone signal 32 (S1: NO),
It waits until the tone signal 32 is detected. On the other hand, when the tone signal 32 is detected by the tone signal detector 22 (S1: YES), the detected tone signal 32 is a tone signal from any key in the key row K of the mobile phone 3. It is determined whether or not there is
It is determined whether the tone signal 32 is from a key (S2). This determination is made by detecting a key in the operated key row K with reference to a table in the memory 51 based on the tone signal 32 detected by the tone signal detection unit 22.

If it is determined in S2 that the tone signal is not the tone signal 32 from the "#" key (S2: NO), it is similarly determined in S6 whether the tone signal is from the "*" key. Further, when it is determined that the tone signal detected in S1 is not a tone signal from the “*” key (S6: NO), the transmission pulse is determined based on the tone signal corresponding to the operation key in S10. In the conversion unit 24, M
Pulse modulation is performed at a predetermined frequency according to the pulse signal data output from the PU 23 to generate a pulse signal,
It is output to the infrared light emitting unit 25. The infrared light emitting section 25 is provided with an infrared remote control signal 26 obtained by superposing the pulse signal generated by the transmission pulse converting section 24 on the infrared light.
Is transmitted to the infrared light receiving section 41 of the communication karaoke apparatus 4. Thereafter, the process returns to S1 to detect the next tone signal 32.

Through the processing of S1, S2, S6, and S10, the karaoke selection numbers of the karaoke tunes input from the number keys in the key row K of the mobile phone 3 are sequentially transmitted to the communication karaoke apparatus 4 and output. Things.

On the other hand, if it is determined in S2 that the tone signal 32 is from the "#" key (S2: YE
S) includes, in S3, another further tone signal 3
2 is input via the microphone 21 and the same processing as described above is performed. Then, the tone signal 32 input in S3
Is a tone signal 32 from the "#" key (S4). When it is determined that the tone signal 32 is from the "#" key (S4: YES), the determination process is performed based on the continuous operation of the "#" key (<##>) as described above. , S1, S2, S6, S10
Is transmitted to the communication karaoke apparatus 4 via the processing described above, a determination signal for performing reservation execution of a karaoke song corresponding to the music selection number transmitted and output to the communication karaoke apparatus 4 (S5). Thereby, the karaoke music corresponding to the music selection number input via the key row K of the mobile phone 3 is played in the karaoke measure 4. When the "#" key is not continuously operated (S2: YES, S3, S4: NO), the process returns to S1 and the tone signal 32 is detected.

The tone signal 32 detected in S1
Is not the "#" key (S2: NO), but is from the "*" key (S6: YES), another further tone signal 32 is input via the microphone 21 in S7, The same processing as described above is performed. Then, it is determined whether the tone signal 32 input in S7 is the tone signal 32 from the "*" key (S8). When it is determined that the tone signal is from the "*" key (S8:
In YES, the cancellation process is performed based on the continuous operation of the "*" key (<**>) as described above, and the communication karaoke device 4 is processed by the S1, S2, S6, and S10. A cancel signal for canceling the reservation execution of the karaoke tune corresponding to the tune selection number transmitted and output is transmitted to the communication karaoke apparatus 4 (S9). At this time, the performance of the karaoke tune corresponding to the tune selection number input via the key row K of the mobile phone 3 is not performed, and the user again inputs the desired tune selection number via the key row K. In the case where the "*" key is not continuously operated (S2: NO, S6: YE)
In S, S7, S8: NO), the process returns to S1 to detect a tone signal.

Next, an operation of executing a reservation based on a karaoke song selection number stored in advance in the memory 52 of the mobile phone 3 as a shortened dial number will be described with reference to FIG. FIG. 6 is a flowchart of a short transmission program for transmitting a remote control signal by short dial transmission.
Here, it is assumed that <song number 4 digits or 5 digits + <000 >> is stored in the memory 52 of the mobile phone 3 in advance as a speed dial. Note that <000> corresponds to a shortened dial code.

In FIG. 6, in order to transmit the music reservation signal corresponding to the speed dial number, in S11, the tone signal 32 generated from the speaker 31 of the portable telephone 3 is picked up via the microphone 21 and The signal is detected by the signal detector 22. In subsequent S12, it is determined whether the tone signal 32 detected in S11 is a tone signal based on a speed dial. If the tone signal is not a tone signal based on the speed dial (S12: NO), the process returns to S11 after normal tone signal processing, specifically, each processing described in FIG. 5 is performed (S13).

On the other hand, the tone signal 32 detected in S11
Is a tone signal based on the speed dial (S1
2: YES), a tone signal continuously generated from the speaker 31 of the mobile phone 3 is input via the microphone 21 and detected by the tone signal detecting unit 22 (S).
14). At this time, if the answering machine function is set to the wireless base station of the mobile phone 3, a call is not transmitted by the shortened dial signal.

Subsequently, the continuous tone signal 32 input by the microphone 21 as described above is converted into a continuous number string corresponding to the key in the key string K with reference to the table of the memory 51 (S15). Further, in S16,
It is determined whether the last three digits of the numeric string are <000> (S16). If the last three digits of the numeric string are not <000> (S16: NO), it is considered that an input error has occurred, so this speed dial input is ignored (S17), and then S
11 and waits for the input of the next tone signal 32 (S1).
1). If the last three digits of the number string are <000> (S16: YES), the first four or five digits of the number string are used as the karaoke song selection number, and the four digits are used. The reservation pulse signal data is created by adding the reservation determination signal to the numeric string (S18). In the transmission pulse converter 24, pulse modulation is performed at a predetermined frequency in accordance with the reserved pulse signal data output from the MPU 23 to create a reserved pulse signal, which is output to the infrared light emitting unit 25. Further, the infrared light emitting section 25 transmits and outputs an infrared remote control signal 26 obtained by superimposing the reserved pulse signal generated by the transmission pulse converting section 24 on the infrared light to the infrared light receiving section 41 of the communication karaoke apparatus 4 (S
19).

As described in detail above, in the remote control device 1 of the present embodiment, the tone signal output from the speaker 31 based on the operation of various keys in the key row K of the mobile phone 3 is attached to the mobile phone 3 by the microphone. After the tone signal acquired through the microphone 21 and the tone signal acquired through the microphone 21 are detected by the tone signal detecting unit 22, the operation keys are detected based on the table of the memory 51, and the detected key is detected. Is converted to a predetermined pulse signal by the transmission pulse conversion unit 24 and transmitted from the infrared light emitting unit 25 to the infrared light receiving unit 41 of the communication karaoke apparatus 4. Remote controller signals corresponding to the operation keys based on the tone signals generated from the speaker 31 when operating the various keys of the selected key row K. It can be transmitted to the communication karaoke apparatus 4 as well as create. Thus, by operating the number keys in the key row K using the mobile phone 3, it is possible to control the remote control of the communication karaoke apparatus 4 and to preselect and input the selection number of the karaoke tune. Can freely select a karaoke song using his / her mobile phone 3.

Further, a memory 5 provided in the portable telephone 3
By storing the song selection number of the karaoke song in advance in 2, it is not necessary to input the song selection number each time the desired karaoke song is sung, and the karaoke song can be quickly sung.

Further, since the remote control device 1 has a clip structure that can be attached to the mobile phone 3 so as to cover the speaker 31 of the mobile phone 3, the remote controller 1 can be attached to the mobile phone 3 and removed from the mobile phone 3. Can be performed with one touch.

Furthermore, since the microphone 21 of the remote control device 1 is arranged near the speaker 31 of the mobile phone 3 in a state where the remote control device 1 is attached to the mobile phone 3, the tone signal emitted from the speaker 31 is transmitted to the microphone 21. Sound can be reliably collected through the microphone.

It should be noted that the present invention is not limited to the above embodiment, and various changes can be made without departing from the gist of the present invention. For example, it is possible to provide an infrared light receiving unit to the remote control device 1 and add a known learning function of learning a remote control signal of a remote control device used for another type of external device. in case of,
In addition to remote control of the karaoke apparatus 4, remote control of another type of external device can be performed.

[0045]

As described above, in the remote control signal transmitting apparatus according to the first aspect, the remote control signal transmitting apparatus is attached to a portable telephone,
It is possible to create a remote control signal corresponding to the operation key based on the tone signal generated from the speaker when operating various keys arranged on the mobile phone and transmit it to an external device. Thus, remote control of an external device can be performed.

Further, in the remote control signal transmitting apparatus according to the second aspect, by operating the number key of the mobile phone,
It is possible to select a karaoke song to be performed by the karaoke apparatus, and thereby each person can freely select a karaoke song using his / her own mobile phone.

Further, in the remote control signal transmitting apparatus according to the third aspect, it is possible to previously store the selection number of the karaoke song in the number storage means provided in the mobile phone. There is no need to enter a song selection number each time the song is sung, and the karaoke song can be quickly sung.

Further, since the remote control signal transmitting device according to the fourth aspect has the clip structure, it is possible to attach to and detach from the mobile phone with one touch.

Further, in the remote control signal transmitting device according to the fifth aspect, the microphone of the tone signal obtaining means is arranged near the speaker of the mobile phone in a state where the microphone is mounted on the mobile phone. Thus, it is possible to reliably obtain a tone signal from the speaker of the mobile phone.

As described above, according to the present invention, a remote control signal corresponding to an operation key is created and transmitted to an external device based on a tone signal generated from a speaker at the time of operating various keys arranged on a mobile phone. Accordingly, it is possible to provide a remote control signal transmission device that enables remote control of an external device using a mobile phone.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram schematically showing a state in which a remote control signal transmission device is attached to a mobile phone.

FIG. 2 is a cross-sectional view schematically showing a state in which the remote control device is attached to a mobile phone.

FIG. 3 is a block diagram showing an electrical configuration of the remote control device.

FIG. 4 is an explanatory diagram schematically showing a case where a plurality of remote control devices are used for a communication karaoke device.

FIG. 5 is a flowchart of a remote control signal transmission program for transmitting an infrared remote control signal in response to a tone signal.

FIG. 6 is a flowchart of a short transmission program for transmitting a remote control signal by short dial transmission.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Remote control (signal transmission) device 3 Mobile telephone 4 Karaoke device 21 Microphone 22 Tone signal detection unit 23 MPU 24 Transmission pulse conversion unit 25 Infrared light emitting unit 26 Remote control signal 31 Speaker 32 Tone signal 41 Light receiving unit K Key train

Claims (5)

[Claims] 1. A remote control signal transmission device attached to a mobile phone for performing remote control of various external devices, wherein a tone signal output from a speaker is obtained based on an operation of various keys provided on the mobile phone. A tone signal acquisition unit, a key detection unit that detects a key operated by a mobile phone based on the tone signal acquired by the tone signal acquisition unit, and a key corresponding to the key detected via the key detection unit. A remote control signal transmission device comprising: a pulse signal generation / output unit that generates a pulse signal and outputs the pulse signal to an external device. 2. The remote control signal transmitting device according to claim 1, wherein the external device is a karaoke device, and the remote control signal transmitting device is capable of selecting a karaoke tune based on an operation of a number key on a mobile phone. . 3. The remote control signal transmitting apparatus according to claim 2, wherein the portable telephone is provided with a number storage means, and the number storage means stores a selection number of a karaoke song. 4. The remote control signal transmitting device according to claim 1, wherein the remote control signal transmitting device has a clip structure that can be attached to the mobile phone so as to cover a speaker of the mobile phone. 3. The remote control signal transmitting device according to item 1. 5. The apparatus according to claim 1, wherein said tone signal acquiring means has a microphone, and the microphone is arranged near a speaker of the mobile phone when the remote control signal transmitting device is mounted on the mobile phone. The remote control signal transmitting device according to claim 4.