JPH04260298A - Remote controller - Google Patents

Abstract

PURPOSE:To extend the transmission range by adding a device receiving a signal sent from a transmitter and storing once the received signal and sending the stored signal to a receiver between the transmitter and the receiver. CONSTITUTION:A control signal to implement remote control is modulated by a transmitter 1 and converted into an optical signal and sent to a reception section 2. The signal received by a light receiving element 3 in the reception section 2 is demodulated to a signal equal to the control signal 1 by a demodulator 4 and a waveform shaping section 5 and the signal is stored in a storage section 6. When the transmission of an output signal from the transmitter 1 is finished and the signal storage is finished, the signal read from the storage section 6 is modulated by a modulation section 8 and converted into an optical signal equal to an output signal of the transmitter 1 by a light emitting element 9 and sent to a receiver 10.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a remote control device.
In particular, the present invention relates to a remote control device that extends the transmission distance of remote control signals.

0002

2. Description of the Related Art A conventional remote control device has a transmitting device (hereinafter referred to as a "transmitter") 4 as shown in FIG. 5 or 6.
1 or 51 (hereinafter simply referred to as “
44 or 54 (hereinafter referred to as "signal").
45 or 55 (referred to as a "receiver").

The remote control device shown in FIG. 5 is an optical remote control device that transmits remote control signals using optical signals. In the remote control device shown in FIG. 5, on the transmitting side, a coded signal as a control input is modulated by a modulator 42, and then converted into an optical signal 44 by a light emitting element 43 and transmitted. The element 46 receives the optical signal 44, and the demodulator 47 demodulates the received signal to provide a control output, thereby transmitting the signal.

The remote control device shown in FIG. 6 is a radio wave type remote control device that transmits a remote control signal using radio waves. In the remote control device shown in FIG. 6, on the transmitting side, a signal is modulated by a modulating section 52 and transmitted as radio waves 54 through an antenna 53, and on the receiving side, a received signal obtained by an antenna 56 that receives the radio waves 54 is modulated by a demodulating section. 57 to transmit the signal.

[0005]

[Problems to be Solved by the Invention] The above-mentioned conventional remote control device uses a method of transmitting the signal from the transmitter directly to the receiver, so the signal transmission distance depends on the magnitude of the transmitter's output. , is limited by receiver sensitivity and receiver noise.

[0006] Therefore, in order to extend the signal transmission distance, it is conceivable to increase the output of the transmitter or improve the sensitivity of the receiver. However, the transmitters of this type of remote control device are generally constructed to operate on batteries to make them portable, and increasing the output will shorten the life of the battery, so the output of the transmitter should be reduced. This increasing method is not suitable for this type of remote control device. Furthermore, even if the sensitivity of the receiver is improved, the transmission distance cannot be extended if more noise mixes in from the surroundings and, as a result, there is more noise in the signal.

[0007] Furthermore, when the remote control device is composed of commercially available equipment, it is often difficult to modify the equipment itself, and it has been impossible to extend the signal transmission distance.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a remote control device that can extend the signal transmission distance without modifying the transmitter and receiver itself. .

[0009]

[Means for Solving the Problems] A remote control device according to the present invention receives a signal transmitted from the transmitter and transmits the received signal between a signal transmitter and a signal receiver. The present invention is characterized in that a device for once storing the signal and then transmitting the signal to the receiver is additionally provided to extend the signal transmission distance.

0010

[Operation] In the remote control device of the present invention, a signal transmitted from the transmitter is received between the transmitter and the receiver, the received signal is temporarily stored, and then the signal is transmitted to the receiver. Since a device with this function is provided, the signal transmission distance is extended.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows the system configuration of a remote control device according to a first embodiment of the present invention. FIG. 2 shows the operation waveforms of each part in the first embodiment, and FIG. 3 shows the flow of the operation in the first embodiment.

A control signal for performing remote control is modulated by a transmitter 1 similar to the transmitter 41 in FIG. 5, converted into an optical signal, and transmitted to the receiver 2.

The signal received by the light receiving element 3 in the receiving section 2 is demodulated by the demodulating section 4 and the waveform shaping section 5 into a signal equivalent to the control signal 1, and this signal is stored in the storage section 6. .

[0015] After the transmission of the output signal from the transmitter 1 is completed,
After the signal storage is completed, the signal read out from the storage section 6 is modulated by the modulation section 8, converted by the light emitting element 9 into an optical signal equivalent to the output signal of the transmitter 1, and transmitted to the receiver 1.
Transmitted to 0.

These operations are controlled by the control section 11 according to the flow shown in FIG. That is, transmission from the transmitter 7 is prohibited (step S1), reception by the receiver 2 is permitted (step S2), and if there is a transmission signal from the transmitter 1 (step S3), the receiver 2 receives the signal. is received and stored in the storage unit 6 via the waveform shaping unit 5 (step S4).
. When the reception signal is completed (step S5), reception of the reception section 2 is prohibited (step S6), transmission of the transmission section 7 is permitted (step S7), and the signal stored in the storage section 6 is transferred to the transmission section 7. (Step S8). Storage section 6
When all the signals stored in are transmitted from the transmitter 7 (step S9), the process returns to the first step and transmission is prohibited again.

In this embodiment, in order to prevent the signal transmitted by the light emitting element 9 from interfering with the signal to be received by the receiving part 2, the signal received by the receiving part 2 is temporarily stored in the storage part 6. The configuration is such that the signal is stored and the stored signal is transmitted after the receiving section 2 receives no more signals.

The first embodiment has been explained by taking optical transmission as an example, but as shown in the second embodiment shown in FIG. 4, when radio waves are used as the signal transmission medium, the light receiving element 3 and the light emitting element 9 are replaced with the antennas 23 and 29, and the demodulating section 4 and the modulating section 8 are replaced with the demodulating section 24 and the modulating section 28 corresponding to the frequency and format of the radio wave to be used, the first embodiment can be obtained. Substantially the same operation as in the case of is possible. Note that the transmitter 21, antennas 22, 31, and receiver 30 shown in FIG. 4 are also configured to perform substantially the same operations as the transmitter 1 and receiver 10 in FIG. Ru.

[0019]

As described above, according to the present invention, a signal transmitted from the transmitter is received between the transmitter and the receiver, the received signal is temporarily stored, and then the signal is transmitted. Since a device having a transmitting function is added to the receiver, it is possible to provide a remote control device that can extend the transmission distance of remote control signals without modifying commercially available equipment.

[Brief explanation of the drawing]

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

FIG. 2 is a diagram of signal waveforms of various parts in the embodiment of FIG. 1;

FIG. 3 is a flowchart showing the flow of operations in the embodiment of FIG. 1;

FIG. 4 is a block diagram showing the configuration of a remote control device according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing the configuration of an example of a conventional remote control device.

FIG. 6 is a block diagram showing the configuration of another example of a conventional remote control device.

[Explanation of symbols]

1,21; transmitter 2; Receiving section 3; Light receiving element 4, 24; demodulation section 5; Waveform shaping section 6; Memory section 7; Transmitter 8, 28; Modulation section 9; Light emitting element 10, 30; receiver 11; Control unit

Claims (1)

[Claims] 1. In a wireless remote control device, a remote control signal transmitted from the transmitting device is received between a remote control signal transmitting device and a remote control signal receiving device, and the received remote control signal is transmitted between a remote control signal transmitting device and a remote control signal receiving device. A remote control device characterized in that a device for temporarily storing a control signal and then transmitting the remote control signal to a receiving device is additionally provided to extend the transmission distance of the remote control signal.