JPH06133377A - Reception device for remote control signal - Google Patents

Abstract

PURPOSE:To allow the user to recognize the propriety of a reception state of a remote control signal through the use of a display means or the like in the device having a remote control function. CONSTITUTION:A digital signal obtained by receiving a remote control signal at a receiver 2 is led to a discrimination device 3A. The discrimination device 3A discriminates whether or not the digital signal is a control code and outputs a control signal used to control a controlled section when the signal is the normal code signal and outputs a normal signal, and the discrimination device 3A outputs an abnormity signal when the signal is not the control code. A controller 4A receives the control signal and the normal signal or the abnormity signal and outputs a display signal for the normality/abnormity by using the normal signal or the abnormity signal. Then the display signal is fed to a display device 5A, on which the normality/abnormity of the reception state of the remote control signal is displayed.

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 receiving device which has a remote control function and which allows a user to recognize whether or not a remote control signal receiving state is good.

[0002]

2. Description of the Related Art Among general consumer devices, electronic devices that are widely capable of remote control operation have become widespread. As a remote control method, infrared remote control using infrared rays is often adopted.

FIG. 8 shows a transmission signal format of a general infrared remote control transmitter.

A remote control signal (hereinafter referred to as a remote control signal) is a digital signal as shown in FIGS. 8 (a) and 8 (b) at 38 kHz (cycle 26.3 μm) as shown in FIG. 8 (e).
s) Intermittent oscillation is generated at the timings shown in FIGS. 8 (c) and 8 (d) by the oscillating infrared light, and is output from the transmitter.

The remote control signal is, as shown in FIG.
For example, at the interval of 108 (ms), the signal of the format as shown in FIG. 8 (b) (that is, FIG. 8 (c)) is transmitted for the first time. This first signal has a signal-existing period of 67.5 (ms), and the remaining period is a non-signal period. The signal period is
First, there is a long signal cycle with or without a signal called a leader code (1
3.5 ms) period, followed by custom code and data code every 27 (ms). The leader code is
This signal is composed of a signal period of 9 (ms) and a signalless period of 4.5 (ms), and means data transmission. The custom code is a signal that specifies the target device, and is composed of the first 8 bits and the second 8 bits. The 8 bits in the first half and the 8 bits in the latter half have an inversion relationship. The data code is a signal that means the actual control content,
Like the custom code, it is composed of the first half 8 bits and the second half inverted 8 bits. Each code is shown in Figure 8.
As shown in (c), the logic level is determined by the length of the pulse interval. Here, the logic level is set to "1" when the pulse interval is long and "0" when the pulse interval is short. The presence / absence of a pulse, that is, the presence / absence of a signal corresponds to the presence / absence of a carrier, as can be understood from FIGS. 8 (c) and 8 (d). Figure 8 (d)
Shows the second signal in (a). As shown in FIG. 8 (e), the carrier is, for example, 38 kHz (cycle 2
6.3 μs) is used.

[0006] Such a remote control signal is received and converted into a pulse, and the electronic device 6 whose controlled unit is controlled based on the pulse receives the remote control signal from the transmitter 1 as shown in FIG. 9. Receiving device 2 for decoding, a determination device 3 for determining whether or not the digital signal from the receiving device 2 is a normal remote control signal, and outputting a control signal if the determination result is a correct remote control signal, and this determination device 3 And a control device 4 for performing a predetermined control on the controlled part based on the control signal from.

First, the remote control signal from the transmitter 1 detects 38 kHz of the carrier in the receiver 2 of the electronic device,
Output a digital signal. This digital signal is generally input to the determination device 3 as a digital signal of DC 0 to + 5V (0V is low level, + 5V is high level). The determination device 3 determines whether the remote control signal has the format shown in FIGS. 8 (c) and 8 (d), and if it determines that the remote control signal is normal, outputs a control signal to the control device 4 to control the controlled signal. Causes a part to perform a predetermined control.

In a remote control device using infrared rays, a random pulse or a periodic pulse is output from the receiving device 2 due to noise from lighting equipment, power supply ripples, or disturbance noise having a frequency near infrared rays such as spurious. To be done. When such disturbance noise is input at the same time as the remote control signal, the receiving device 2
The digital signal output from is abnormal. This state is shown in FIG.

In FIG. 10, (a) shows a remote control signal output from the transmitter 1, (b) shows a signal output from the receiving device 2 due to disturbance noise, and (c) shows the remote control of (a). The digital signal output from the receiver 2 when disturbance noise is mixed in the signal is shown.

When a digital signal as shown in FIG. 10 (c) is supplied to the determination device 3 in the next stage, the determination device 3 does not determine that it is a correct remote control signal and the electronic device 6 does not operate.

Further, since infrared rays are used as the remote control signal, the infrared signal from the transmitter 1 is received by the receiving device 2.
The electronic device is difficult to operate unless the positional relationship is such that it is directly incident on.

As a method for improving this, since a noise source such as a fluorescent lamp generally generates visible light, the visible light is normally operated by blocking it with a hand or a shield such as a magazine. Whether or not the noise source is searched for, the electronic device is installed in a state where it is not easily affected by the noise source.

On the other hand, in order to expand the controllable range of the remote controller, there is also a device that employs a remote control device that uses radio waves in the UHF band without using infrared rays. It enables control with the same method as a remote control.

Unlike the infrared remote controller, this UHF remote controller has the advantage that it can be controlled if radio waves can reach it even if the receiving device 21 is not directly visible. However, if unnecessary radio waves from other digital devices (for example, personal computer, word processor, compact disc player, etc.) include the same frequency band as the remote control radio waves, the correct code is obtained as in the case of FIG. Cannot transmit.
In order to improve such interference, the noise source may be stopped, or the UHF of the receiving device 21 may be set to a state where noise is difficult to receive.
It is sufficient to move or change the direction of the receiving antenna of the band.
However, unlike infrared noise, it is completely invisible to the eye, so it is difficult to determine the noise source, and even when the direction of the receiving antenna is changed, it is difficult to receive noise and it is possible to judge whether it is in the best state or in an unstable state. Have difficulty. For this reason, there are cases where the antenna operation is stopped after some extent of reception.

[0015]

As described above, both the infrared remote controller and the UHF remote controller may repeat trial and error with respect to external noise, and may stop the countermeasure when the noise can be received to some extent. In addition, there are cases where the transmitter side is defective and cannot be controlled, and it takes a lot of time to investigate the cause.

In view of the above problems, the present invention provides a device having a remote control function, which allows a user to recognize the quality of the reception state of the remote control signal by using a display means or the like. The purpose is to provide a device.

[0017]

According to a first aspect of the present invention, there is provided a remote control signal receiving device, which receives a remote control signal and converts the remote control signal into a digital signal. If the digital signal from the receiving means is the same as the remote control signal, a control signal for controlling the controlled part is output, while a normal signal is output and the remote control signal is determined. When different, a determination means for outputting an abnormal signal, and a control signal, a normal signal and an abnormal signal from the determination means are input, and while the controlled unit executes a predetermined process based on the control signal, A control means for outputting a recognition signal corresponding to normality or abnormality based on the normality signal and the abnormality signal, and this control means. Based on the recognition signal from the means and is characterized by comprising a reception status output means for receiving the state of the remote control signal to recognize normal or abnormal to the user.

According to a second aspect of the present invention, in the first aspect of the present invention, the reception state output means has a first LED for displaying a normal input state and a first LED for displaying an abnormal input state. It is composed of two LEDs.

According to a third aspect of the present invention, there is provided a remote control signal receiving device, which is provided with a receiving means for receiving a remote control signal and converting it into a digital signal, and a digital signal from the receiving means as an input signal. , Whether the digital signal is a remote control signal or not, and when the digital signal is the same as the remote control signal, outputs a control signal for controlling the controlled part and simultaneously outputs a normal signal. When it is determined that the digital signal is input within a fixed time, the digital signal is determined to be a pulse by distinguishing the digital signal from noise The input signal is output to and the number of input signals input at the same time within a fixed time is counted and the first Judging means for outputting a counting signal, counting the number of pulses and outputting a second counting signal when it is judged that the digital signal is not a noise but a pulse, and a control signal, a normal signal and an input signal from the judging means. And the first and second count signals are input to cause the controlled unit to execute a predetermined process based on the control signal, while the normal signal, the input signal, and the first and second count signals are input. Based on the control means for outputting a recognition signal indicating the reception state of the digital signal, and based on the recognition signal from the control means, the reception area of the remote control signal is changed by varying the display area of the display unit. It is characterized by comprising a reception state output means for making the user recognize.

According to a fourth aspect of the present invention, in the case where the determination means in the third aspect of the invention determines whether the input signal from the receiving device is a digital signal and determines that the input signal is a digital signal. An input determination processing device that outputs an input signal; an input counter that counts the number of input signals and outputs an input number signal when the input signal of the input determination processing device is determined to be a digital signal; A pulse width determination processing device that inputs a digital signal from a receiving device, determines whether or not the input signal is a pulse by determining the pulse width of the digital signal, and outputs a pulse signal when the input signal is determined to be a pulse, and A pulse counter that counts the pulse signal and outputs the pulse number signal when the input signal of the pulse width determination processing device is determined to be a pulse,
When the input signal of this pulse width determination processing device is determined to be a pulse, it is determined whether the pulse signal is a remote control signal, and if it is a normal signal array, a normal signal is output and at the same time the remote control signal is output. And a code determination processing device for outputting a control signal.

According to a fifth aspect of the invention, the control means in the third aspect of the invention determines whether or not the normal signal is input, and indicates a normal reception state when the normal signal is input. A first determining means for outputting a display signal of 1; and a second determining means for determining whether or not the pulse signal is input when it is determined by the first determining means that there is no normal signal. Means and the second judging means, when it is judged that there is a pulse signal input, it is judged whether or not the value of the pulse number signal is larger than a predetermined value. To the third determining means for outputting a second display signal indicating the reception state of No. 3 and outputting a third display signal indicating the third reception state when the value is less than or equal to a predetermined value, and to the second determining means. If there is no pulse signal, the input signal is Or it determines, if when the input signal is not, a fourth determining means does not output the display signal, the input signal at the fourth determination means determines that there is,
It is determined whether or not the value of the input number signal is larger than a predetermined value. If it is larger than the predetermined value, a fourth display signal indicating a fourth reception state is output, and if it is smaller than or equal to the predetermined value, the fifth display signal is output. And a fifth determination means for outputting a fifth display signal indicating the reception state of the.

The invention according to claim 6 is characterized in that the reception state output means in the invention according to claim 3 is composed of a plurality of LEDs whose display number can be changed according to the reception state. is there.

[0023]

According to the first aspect of the present invention, when the control by the remote control does not operate normally or when the equipment is installed, the reception status output means such as the display device determines whether the reception status of the remote control signal is good or bad. By making the user recognize, it becomes possible to install the device properly. Further, if the receiving state output means does not give an abnormal or normal output even if the remote control transmitter is operated, it is possible to immediately determine that the transmitter is defective.

According to the third aspect of the present invention, by observing the display area of the display section, the normality / abnormality of the current reception state of the device and the state of noise input to the device are clarified, which is better. The reception state can be easily set, and it becomes easy to determine whether or not the remote control transmitter is defective.

[0025]

EXAMPLES Examples will be described with reference to the drawings. FIG. 1 is a block diagram showing a remote control signal receiving apparatus according to an embodiment of the present invention. The same parts as those in FIG. 9 are designated by the same reference numerals for description.

In FIG. 1, reference numeral 1 is, for example, an infrared remote control transmitter, and a remote control signal from the transmitter 1 is received by a receiver 2 in an electronic device 6A. The electronic device 6A receives the remote control signal, decodes the remote control signal, and controls the internal controlled section (not shown) by the decoded signal.
The remote controller 2 receives the remote control signal from the transmitter 1 and decodes it, and determines whether the digital signal from the receiver 2 is a normal remote control signal. A determination device 3A that outputs a normal signal at the same time as outputting a control signal, and outputs an abnormal signal if it is an incorrect remote control signal, and the determination device 3A.
In order to cause the controlled part to perform a predetermined process based on the control signal from A, and to inform the user whether the current remote control signal reception state is normal or abnormal based on the normal signal or the abnormal signal. And a display device 5A for displaying a normal or abnormal reception state based on the display signal from the control device 4A.

The judging device 3A outputs an abnormal signal to the control device 4A when the inputted digital signal does not have a pulse width equivalent to that shown in FIGS. 8 (c) and 8 (d), and then outputs the abnormal signal to the controller 4A. If the pulse width is the same as the above), the control signal is output to the control device 4A and at the same time a normal signal is output to the control device 4A.

Here, a particularly important process of the determination device 3A will be described with reference to FIG.

FIG. 2 shows a waveform of a negative polarity obtained by inverting the custom code input section (first half custom code) of the digital signal input to the judging device 3A (the first half waveform of the custom code of the remote control signal in FIG. 8C). (Corresponding to the inverted waveform). It is assumed that the waveform of the custom code input section is input to the determination device 3A as a digital signal. In this digital signal waveform, the high level period corresponds to the period without carrier (when no signal is input), and the low level period corresponds to the period with carrier (pulse period). The high level period is + 5V and the low level period is 0V. The judging device 202 judges the logical levels "1" and "0" of the custom code shown in FIG. 8 (c) based on the pulse width t1 and the pulse period t2 of the digital signal.

Code 0 ... t1 = 0.56 ms t2 = 1.125 ms Code 1 ... t1 = 0.56 ms t2 = 2.25 ms Here, t1, due to the output variation of the transmitter 1 or the receiving sensitivity difference of the receiving device 2, etc. It is necessary to consider the temporal variation in both t2, and the judgment is made by considering the allowable value of ± α time.
In the case of an infrared remote controller, the value of t1 is transmitter 1 and receiver 2
There is a change affected by the distance from. Therefore, with respect to t1, a value tp greater than a certain value in a range smaller than 0.56 ms
It is determined that the pulse period is (that is, a constant value of tp <0.56 ms), the next pulse is further input, and when the pulse width is tp or more, it is determined whether it is 0 or 1 depending on the time of t2.

By repeating the above process, all 32 bits from the first half custom code to the second half data code (inversion of the first half data code) of FIG. 8B are the same as the predetermined code. In that case, the control signal is output to the control device 4A.

Further, the judging device 3A outputs an abnormal signal when the pulse width is equal to or less than the constant value tp, and the pulse period t
When 2 is, for example, t2> 2.25 ms + 0.56 ms, it is determined to be abnormal and an abnormal signal is output to the control device 4A. If it is a normal pulse input, it outputs a normal signal. Based on the abnormal signal and the normal signal, the control device 4A turns on the LEDs 1 and 2 used as the display device 5A, for example, as shown in FIG. 3 for a certain time, and the user recognizes the reception state (normal or abnormal) of the remote control signal. It can be so. In FIG. 3, LED1 lights up when the signal is normal and LE when the signal is abnormal.
D2 is lit.

In the above embodiment, the display device 5A is a display device using a light emitting diode (LED), but instead of this, it may be a liquid crystal display device, a fluorescent display tube, or a video signal on a CRT. It may be an on-screen display. Further, even if one or both of LED1 and LED2 is replaced with a sound output device such as a buzzer, the user can similarly recognize.

FIG. 4 is a block diagram showing another embodiment of the present invention. In FIG. 4, an electronic device 6B receives a remote control signal from the transmitter 1, decodes the remote control signal, and controls an internal controlled unit (not shown) by the decoded signal.
The receiver 2, the determination device 3B, the control device 4B, and the display device 5B are provided. The determination device 3B includes an input determination processing device 31, an input counter 32, a pulse width determination processing device 33, a pulse counter 34, and a code determination processing device 35. The remote control signal from the remote control transmitter 1 is received and decoded by the receiving device 2 in the electronic device 6B. The digital signal output from the receiving device 2 is input to the determining device 3B. In the determination device 3B, the digital signal is input to the input determination processing device 31 that determines that the digital signal is input,
When it is determined that the input signal is a digital signal, the input signal is output to the control device 4B, and the control device 4B outputs an input count request signal to the input counter 32 to increment the count by one. The input counter 32 increments the count value by the input count request signal, counts the number of input signals, and outputs the value to the control device 4B. Receiver 2
Is inputted to the pulse width judgment processing device 33 through the input judgment processing device 31, and the pulse width judgment processing device 33 distinguishes the difference between the noise and the signal according to the magnitude of the pulse width of the digital signal, and has a constant width. In the case of the above signals, it is determined to be a pulse, and the pulse signal is output to the control device 4B. The control device 4B uses the pulse counter 34 when the pulse width determination processing device 33 determines that the input signal is a pulse.
A count request signal that causes the pulse counter 34 to increase by 1 is output to the pulse counter 34. The pulse counter 34 increments the count value by +1 according to the count request signal, counts the pulse signal, and outputs the value to the control device 4B. The digital signal determined as a pulse by the pulse width determination processing device 33 is input to the code determination processing device 35. The code judgment processing device 35 judges whether the input pulse signal is a control signal of the remote controller, and when it judges that the pulse signal is a normal signal arrangement, it outputs a normal signal to the control device 4B and simultaneously controls the remote control. It also outputs a signal. The control device 4B outputs as a display signal to the display device 5B indicating whether the reception state of the remote control signal is normal or abnormal according to the input control signal, normal signal, input signal, input number signal, pulse signal, and pulse number signal, The display device 5B thereby displays the reception status. The control device 4B outputs a reset signal to the pulse counter 34 and the input counter 32 at arbitrary fixed time intervals to clear the count number.

Next, a particularly important pulse width determination processing device 3
3 will be described. It is assumed that a negative waveform obtained by inverting the custom code input section (first half custom code) as shown in FIG. 2 is input to the pulse width determination processing device 33 as a digital signal. Since the polarity is negative, it is always at high level when no signal is input. The remote control signal is shown in Fig. 8 (c) according to the pulse width t1 and pulse period t2 of the digital signal.
The logic levels "1" and "0" of the custom code shown in (1) are judged.

Code “0” ... t1 = 0.56 ms t2 = 1.125 m
s code "1" ... t1 = 0.56ms t2 = 2.25ms Here, it is necessary to consider temporal variations in both t1 and t2 due to variations in the output of the transmitter 1 and differences in the receiving sensitivity of the receiving device 2, Judge by considering the allowable value of ± α time. For this reason, the pulse width determination processing device 33 performs the processing for t1 and determines that the pulse is input at a value tp (that is, a constant value of tp <0.56 ms) that is equal to or greater than a certain value within a range of less than 0.56 msec. , Pulses below that are judged to be noise.

Next, the code judgment processing device 35 will be described. The period t2 of the pulse signal obtained by the pulse width determination processing device 33 is measured,

[Equation 1] To determine. This process is repeated, and all three steps from the custom code in the first half to the data code in the second half of Fig. 8 (b) are performed.
The control signal and the normal signal are output to the control device 4B only when the 2 bits are the same as the predetermined code.

To simplify the explanation, the display device 5B is a device for turning on the five LEDs P1 to P5 shown in FIG. The control device 4B performs a display process of turning on the LEDs P1 to P5. The LEDs P1 and P2 are input display LEDs that perform display control based on the information of the input signal and the input number signal and are turned on when the input information exists. LEDP3, P4
Is a pulse display LED which controls display based on the information of the pulse signal and the pulse number signal and is turned on when the pulse information exists. The LED P5 is a code display LED which is controlled by the information of the normal signal and is turned on when the remote control signal is normally received. Although the above display method is a basic operation, the control device 4B further performs the following processing.

The lighting method of the LEDs P1 and P2 is as follows. When there is any input by the input signal, both the LEDs P1 and P2 are turned on when the value X of the input number signal is larger than the constant value Kx, and when the value is less than the constant value Kx. Lights only LEDP1 as shown in FIG. 6 (a). The method of lighting the LEDs P3 and P4 is as follows. When the pulse signal determines that there is a pulse input, when the value Y of the pulse number signal is greater than the constant value Ky, both LEDs P3 and P4 are lit, and when the value is less than the constant value Ky. As shown in FIG. 6 (b), at the same time, only LEDP3 is turned on, and when there is a pulse input, both LEDs P1 and P2 are turned on regardless of the lighting process of P1 and P2. The LED P5 is turned on when the remote control signal is correctly input by the normal signal as shown in FIG. 6 (c), and at the same time, the LEDs P1 to P4 are turned on together regardless of the lighting process.

FIG. 7 shows a flowchart of an operation in which the above-described display processing in the control device 4B can be repeatedly executed at intervals of a constant time tc.

First, it is determined whether the time tc has elapsed since the interval time counter started (step S1). If the time tc has elapsed, then it is determined in step S2 whether a normal signal is input. To determine.
If the normal signal is input, all the LEDs P1 to P5 are turned on to indicate that the normal reception is performed (step S).
3).

If the normal signal is not input in step S2, it is determined whether or not a pulse signal is input next (step S4). If a pulse signal is input, it is determined whether or not the value Y of the pulse number signal is larger than a constant value Ky (step S5). If it is larger than Ky, LEDs P1 to P4 are turned on and LEDP5 is turned on as shown in step S6. Turn off. When the pulse number signal is Ky or less, the LEDs P1 to P3 are turned on and the LEDs P4 and P5 are turned off as shown in step S7.

If no pulse signal is input in step S4, it is next determined whether or not there is an input signal (step S8). If there is an input signal, it is determined whether or not the value X of the input number signal is larger than the constant value Kx as shown in step S9. If X is greater than Kx, LE
DP1 and P2 are turned on and LEDs P3 to P5 are turned off (step S10). If X is less than or equal to Kx, LEDP1 is turned on and LEDs P2 to P5 are turned off (step S1).
1). If there is no input signal in step S8, all the LEDs P1 to P5 are turned off (step S1).
2). Steps S3, S6, S7 in the above flow
, S10, S11, S12, LED display is performed, the process proceeds to step S13. In step S13, each counter 3
A reset signal is output to the counters 2, 34, and the counters 32, 34
Is set to 0, and the respective input latches of the normal signal, the pulse signal and the input signal by the code judgment processing device 31, the pulse width judgment processing device 33 and the input judgment processing device 35 are cleared to the initial state. Next, the interval time counter is reset, and the time = 0 is set to end.

In this way, by replacing the digital noise or signal with the size of the display area, the input state is approximated to a continuous expression, and it is easy to judge whether it is a good state or a bad state.

Although the display device 5B uses five LEDs, the judgment value Kx of the input number signal may be further divided to increase the number of display elements, and the judgment value Ky of the pulse number signal is also the same. The number of display elements may be finely divided and increased. Although the display device 5B displays the display in a column in the above-described embodiment, the display device 5B is not limited to this as long as the display area changes.

In the above embodiment, the display device 5B is a light emitting diode (LED) display device. However, instead of this, a liquid crystal display device, a fluorescent display tube, or a video signal on a CRT is used. It may be an on-screen display.

[0047]

As described above, according to the present invention, in a device having a remote control function, it becomes possible for a user to recognize the quality of the reception state of a remote control signal by using a display means or the like. , Install the device at an appropriate position, check if there is external noise,
Alternatively, a malfunction of the transmitter can be found.

[Brief description of drawings]

FIG. 1 is a block diagram showing a remote control signal receiving device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a waveform of a custom code input section of a digital signal input to the determination device in FIG.

FIG. 3 is a diagram showing an example of a display device in FIG.

FIG. 4 is a block diagram showing a remote control signal receiving device according to another embodiment of the present invention.

5 is a diagram showing an example of a display device in FIG.

6 is an explanatory diagram of a lighting state of the display device shown in FIG.

FIG. 7 is a flowchart illustrating a display processing operation of the control device in FIG.

FIG. 8 is a diagram showing a format of a general infrared remote control signal.

FIG. 9 is a block diagram showing a conventional remote control signal receiving device.

10 is a waveform diagram for explaining the influence of noise in the receiving device of FIG.

[Description of Codes] 1 ... Transmitter 2 ... Receiving device 3A, 3B ... Judging device 4A, 4B ... Control device 5A, 5B ... Display device (reception state output means) 6A, 6B ... Electronic device 31 ... Input judgment processing device 32 ... Input counter 33 ... Pulse width determination processing device 34 ... Pulse counter 35 ... Code determination processing device

Claims (6)

[Claims] 1. A receiving means for receiving a remote control signal and converting it into a digital signal, and inputting the digital signal to determine whether or not the signal is a remote control signal. The digital signal from the receiving means is remote controlled. If it is the same as the signal, the control signal for controlling the controlled part is output, while the normal signal is output, and if it is different from the remote control signal, a determination means for outputting an abnormal signal, and a control signal from this determination means, A normal signal and an abnormal signal are input, the controlled unit executes predetermined processing based on the control signal, and a recognition signal corresponding to normal or abnormal is output based on the normal signal and abnormal signal. Based on the control means for this purpose and the recognition signal from this control means, the reception state of the remote control signal is normal or abnormal. Receiving device of the remote control signal, characterized by comprising a reception status output means for recognizing the user. 2. The reception status output means is composed of a first LED for displaying a normal input status and a second LED for displaying an abnormal input status. The remote control signal receiving device according to claim 1. 3. A receiving means for receiving a remote control signal and converting it into a digital signal, and a digital signal from the receiving means is supplied as an input signal, and it is judged whether or not the digital signal is a remote control signal. When the digital signal is the same as the remote control signal, a control signal for controlling the controlled unit is output and at the same time a normal signal is output, while means for determining that the digital signal is input within a fixed time And a means for determining that the digital signal is a pulse by distinguishing it from noise, and outputs an input signal when it is determined that the digital signal is input within a fixed time, and at the same time is input within the fixed time. The number of input signals is counted and a first count signal is output, and the digital signal is judged as a pulse instead of noise. And a control signal, a normal signal, an input signal, and the first and second counting signals from the determining means, the determining means outputting the second counting signal by counting the number of pulses when the control is performed. The controlled unit is caused to execute a predetermined process based on the signal, and the recognition signal indicating the reception state of the digital signal is output based on the normal signal, the input signal and the first and second count signals. And a reception status output means for allowing the user to recognize the reception status of the remote control signal by varying the display area of the display unit based on the recognition signal from the control means. A remote control signal receiving device characterized by. 4. The input judging processing device for judging whether the input signal from the receiving device is a digital signal or not, and outputting the input signal when judging that the input signal is a digital signal. When the input signal of the input determination processing device is determined to be a digital signal, an input counter that counts the number of input signals and outputs an input number signal, and a digital signal from the receiving device is input, and a digital signal is input. If the input signal is judged to be a pulse by judging the pulse width of the pulse width, and if it is judged to be a pulse, a pulse width judgment processing device that outputs a pulse signal and the input signal of this pulse width judgment processing device is judged to be a pulse. If a pulse counter counts the pulse signal and outputs a pulse number signal, and the input signal of this pulse width determination processing device is determined to be a pulse, A code determination processing device that determines whether or not the pulse signal is a remote control signal, and outputs a normal signal and, at the same time, outputs a remote control signal when the signal arrangement is normal. 4. The remote control signal receiving device according to claim 3. 5. The first determining means for determining whether or not the normal signal is input, and outputting a first display signal indicating a normal reception state when the normal signal is input. When the first determining means determines that there is no normal signal, the second determining means determines whether the pulse signal is input, and the second determining means determines the pulse signal. When it is determined that there is an input, it is determined whether or not the value of the pulse number signal is larger than a predetermined value, and if it is larger than the predetermined value, a second display signal indicating the second reception state is output. If the value is less than or equal to a predetermined value, the third determination means for outputting a third display signal indicating the third reception state, and if the second determination means determines that there is no pulse signal, It is determined whether there is an input signal, and if there is no input signal, the display signal A fourth determination unit that does not output, and when the fourth determination unit determines that there is an input signal, it is determined whether or not the value of the input number signal is larger than a predetermined value, and it is larger than the predetermined value. In the case of, a fourth display signal indicating the fourth reception state is output, and in the case of a predetermined value or less, the fifth signal is output.
5. The remote control signal receiving device according to claim 3, further comprising: a fifth determining means for outputting a fifth display signal indicating the reception state of the remote control signal. 6. The remote control signal receiving device according to claim 3, wherein said reception state output means is composed of a plurality of LEDs whose display number can be changed according to the reception state.