JP5460680B2 - Remote controller and remote control system - Google Patents

Description

  The present invention relates to a remote controller and a remote control system.

  The transmission unit (hereinafter referred to as “remote control”) of a conventional remote controller generates a remote control signal including a start signal, control data, etc., and transmits it to the reception unit of the control target device body (hereinafter referred to as “main unit”) controlled by the control data Is configured to do. The format of the remote control signal includes a reader unit indicating the start of the remote control signal, control data for controlling the load, a trailer unit indicating the end of the remote control signal, and the like. The receiving unit of the main unit automatically increases the amplification gain when the remote control signal from the transmitting unit is not received, and is in a reception standby state. However, when the remote control signal is received, the gain is automatically adjusted. Auto-gain control function to decrease And the signal output from the receiving part of the main body is transmitted to the CPU of the main body, and the CPU controls the load based on the control data included in this signal.

  However, in the conventional technology configured in this way, when disturbance light is input in the transition period when the gain is decreased after receiving the remote control signal, the gain is not sufficiently lowered (the gain is not stable). However, there is a problem that the control data cannot be accurately reproduced due to the influence of disturbance light.

  In order to solve such a problem, the prior art disclosed in Patent Document 1 below transmits the control data to the remote control signal receiving unit with dummy data added to the head of the control data, so that the receiving unit receives the control data before receiving the control data. The gain is stabilized so that it is not affected by ambient light.

JP-A-5-227580 (paragraph “0019”, FIG. 1, etc.)

  However, the prior art disclosed in Patent Document 1 has the following problems. When a remote control signal having a large amount of control data is received, the time from reception of dummy data to the end of reception of control data becomes long. When such a remote control signal having a long data length is transmitted to the reception unit, for example, when the distance between the transmission unit and the reception unit is long, the remote control signal reaching the reception unit is attenuated. For this reason, there is a problem that the latter half of the control data received by the receiving unit is lost due to an excessive decrease in the gain of the auto gain control function, and the control data cannot be normally received.

  The present invention has been made in view of the above, and an object of the present invention is to provide a remote controller and a remote control system that can improve the reception performance of a remote control signal even when the amount of control data is large.

  In order to solve the above-described problems and achieve the object, the present invention provides a first signal transmission unit that outputs a signal of a predetermined system configured with a reader unit, a data unit, and a trailer unit as a remote control signal. The remote controller system is applied to a remote controller including the remote controller signal and a control target device including a second signal transmission unit that receives the remote control signal, wherein the first signal transmission unit is a time of the trailer unit. Is set to a predetermined length, and has a transmission unit that transmits a remote control signal including the set trailer unit to the second signal transmission unit. The second signal transmission unit includes the reader unit and the data unit. Receiving the remote control signal by reducing the signal amplification gain when receiving the signal, and receiving the remote control signal by increasing the signal amplification gain when receiving the trailer unit When the reception state of the remote control signal in the reception unit is poor, a request signal is generated to request that the time of the trailer unit be longer or maintained than the current time, and the reception state of the remote control signal in the reception unit is good A signal generation unit that generates a request signal for requesting that the time of the trailer unit be shorter or maintained than the current time.

  According to the present invention, it is possible to improve the remote control signal reception performance even when the amount of control data is large.

FIG. 1 is a configuration diagram of a remote controller and a main body according to an embodiment of the present invention. FIG. 2 is a diagram for explaining a change in gain in the receiving unit in the main body. FIG. 3 is a diagram for explaining a problem caused by the gain being excessively decreased. FIG. 4 is a diagram for explaining the relationship between the trailer unit and the gain changed by the transmission unit according to the embodiment of the present invention. FIG. 5 is a diagram for explaining a reception unit output signal that is affected by disturbance light by increasing the time of the trailer unit. FIG. 6 is a flowchart for controlling the time of the trailer unit.

  Embodiments of a remote controller and a remote control system according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a configuration diagram of a remote controller and a main body according to an embodiment of the present invention. FIG. 2 is a diagram for explaining a change in gain in the receiving unit in the main body. FIG. 3 is a diagram for explaining a problem caused by the gain being excessively decreased. FIG. 4 is a diagram for explaining the relationship between the trailer unit and the gain changed by the transmission unit 3 according to the embodiment of the present invention. FIG. 5 is a diagram for explaining the reception unit output signal 6a that is affected by disturbance light by increasing the time T2 of the trailer unit b.

  In FIG. 1, a remote control system according to an embodiment of the present invention includes a signal transmission unit 10 built in a remote control such as an air conditioner or a television, and a signal transmission unit 20 built in these equipment bodies. The signal transmission unit 10 includes a transmission unit 3 for the remote control signal 1, a reception unit 4 that receives the main body signal 2 from the main body, and a control unit 5 that controls the operations of the transmission unit 3 and the reception unit 4. Has been. The signal transmission unit 20 includes a reception unit 6 that receives the remote control signal 1 from the transmission unit 3, a transmission unit 8 that transmits the main body signal 2 to the reception unit 4, and a control that controls operations of the reception unit 6 and the transmission unit 8. Part 7.

  The receiving unit 6 has an auto gain control function that automatically increases the gain when the remote control signal 1 from the transmission unit 3 is not received and automatically decreases the gain when the remote control signal 1 is received. ing.

  FIG. 2A shows an example of the format of the remote control signal 1, and this format is composed of, for example, a reader unit indicating the start of the remote control signal, a data unit, and a trailer unit indicating the end of the remote control signal. For example, a signal for switching from L to H once is set in the reader unit, and a signal for maintaining H is set in the trailer unit. Further, dummy data for reducing the influence of ambient light by reducing the gain of the receiving unit 6 and control data for controlling the load in the main body are set in the data part. In the following description, a group of data from the reader unit a to the trailer unit c is referred to as a remote control signal 1.

  For example, when a specific button (not shown) of the remote controller is operated by the operator, the signal transmission unit 10 generates control data for the operation information to control a specific function of the control target device. For example, when the control target device is an indoor unit of an air conditioner, control data for a drive circuit that drives a fan motor or the like of the indoor unit is generated when an operation that increases the wind intensity by one step is performed. The This control data is set in the data section, and the remote control signal 1 in which the control data is set is temporarily stored in a storage section (not shown) of the signal transmission section 10 and continuously transmitted to the main body a plurality of times. Is done. This is because, for example, the main body is correctly controlled even under a situation where the remote control signal 1 is difficult to be received by the main body due to the influence of ambient light.

  FIG. 2B shows a reception unit output signal 6 a generated by the reception unit 6 that has received the remote control signal 1. The receiver output signal 6a shown in FIG. 2B is a signal having a waveform similar to that of the remote control signal 1, and is a normal signal generated by the receiver 6 when there is no influence of disturbance light, for example. is there. The receiving unit output signal 6a is taken into the control unit 7 and then used for controlling the main body.

  FIG. 2C shows an example of the gain in the receiving unit 6 that has received the remote control signal 1. The gain change when receiving the reader unit (a, b, c) and the data unit included in the remote control signal 1 is reduced by the automatic gain control of the receiving unit 6. That is, as shown in FIG. 2C, while the reader units a to c and the data unit are being received, the gain gradually decreases to a stable level.

  On the other hand, the gain when the reader units a to c and the data unit are not received or when the trailer units a to c are received is increased by the automatic gain control of the receiving unit 6. That is, as shown in FIG. 2 (c), the gain during the time when the reader parts a to c and the data part are not received or the time when the trailer parts a to c are received gradually increases and finally Is restored to the level when the remote control signal 1 is not received (a state of waiting for the remote control signal 1).

When association with describing time and shown in FIG. 2, the time gain is stable at a high state in the period from time t ₀ before the reader unit a is received at time t _1, the reader unit a is received in between t ₁ of time t ₂ varies in the decreasing direction, stable at a low state in a period from time t ₂ the dummy data is received at time t _3, from the time t ₃ when the trailer portion a is received between time t ₄ varies in the increasing direction. As described above, since the dummy data is added to the head of the remote control signal 1, the receiving unit 6 reduces the influence of disturbance light by reducing the gain to a point where the gain is stabilized by the dummy data.

The gain is the level at at time t ₄ in between time t ₄ when the second reader unit b is received at time t ₅ varies in the decreasing direction as a base point, the first control data stable at lower than the level at the time t ₂ to time t ₃ is between times t ₆ from the time t ₅ that is received from two time t ₆ the eye of the trailer portion b is received at time t ₇ Between, it changes in the increasing direction. Further, the gain changes in a decreasing direction between time t ₇ and time t ₈ when the third reader unit c is received, with the level at time t ₇ as a base point, and the second control data is stable at lower than the level at the time t ₅ to time t ₆ in between times t ₉ from the time t ₈ to be received, from the time t ₉ at time t ₁₀ the third trailer section c is received Between, the gain changes in the increasing direction.

However, for example, first control data, if such that data longer than the time length from time t ₅ that shown in FIG. 2 (c) until time t _6, i.e. such that the data amount of the control data is large case, it may become a state in which the gain is too reduced as shown at time t ₉ from the time t ₈ in FIG. 2 (c). In such a state where the gain is excessively reduced, for example, when the reception level of the remote control signal 1 reaching the receiving unit 6 is low because the distance between the remote control and the main body is low, the receiving unit 6 has a receiving unit similar to control data The output signal 6a may not be reproduced.

  This will be specifically described with reference to FIG. FIG. 3A shows an example of the format of the remote control signal 1 as in FIG. 2A, and FIG. 3B shows the waveform of the receiving unit output signal 6a similar to that in FIG. FIG. 3C shows a waveform of the receiving unit output signal 6a generated when the distance between the remote controller and the main unit becomes long in a state where the gain is excessively decreased.

  For example, in a state where the gain is excessively decreased (see FIG. 2C), when the distance between the remote controller and the main body is short, the reception unit output signal 6a has a waveform as shown in B of FIG. Become. However, when the distance between the remote controller and the main body becomes long in a state where the gain is excessively decreased, the reception level of the remote controller signal 1 is decreased, so that the reception unit output signal 6a becomes B1 in FIG. As shown, the latter half is missing.

  FIG. 4A schematically shows the format of the remote control signal 1 used in the prior art, and FIG. 4B shows the trailer unit by the signal transmission unit 10 according to the embodiment of the present invention. A format of the remote control signal 1 in which the length of b is changed is schematically shown.

In the remote control signal 1 shown in FIG. 4B, for example, the length of the trailer part b set between the first control data and the second control data is shown in FIG. The time T2 (for example, several milliseconds to several tens of milliseconds) longer than the time T1 of the trailer part b of the remote control signal 1 is set. Thus, by the time T2> time T1, for example, the gain from time t ₆ to time t ₇ shown in FIG. 4 (c) becomes a value higher than the gain at the same time in FIG. 2 (c). Therefore, the gain value at time t ₉ from the time t ₈ shown in FIG. 4 (c) is also a value higher than the gain at the same time in FIG. 2 (c). That is, it is possible to suppress the gain from decreasing excessively. As a result of suppressing the excessive decrease in gain as described above, even when the distance between the remote controller and the main body is long, the receiving unit 6 can accurately receive the remote controller signal 1, which is shown by B1 in FIG. The lack of the receiving unit output signal 6a is suppressed.

  However, as the time T2 of the trailer part b becomes longer, the time from when the remote control is operated to when the control of the main body is completed becomes longer, so that the remote control operability is lowered and the gain is increased. Therefore, it becomes easy to receive the influence of disturbance light and it becomes difficult to receive the remote control signal 1.

  FIG. 5 (a) shows a part of the remote control signal 1 shown in FIG. 2, and FIG. 5 (c) shows a case where the trailer part b included in the remote control signal 1 is long. The state of the receiver output signal 6a affected by the disturbance light (N) shown in FIG. Each time shown on the lower side of FIG. 5C corresponds to each time shown in FIGS.

  As described above, when the trailer unit b is lengthened for the purpose of suppressing the influence of disturbance light, the gain of the receiving unit 6 increases, so that the receiving unit output signal 6a becomes B2 in FIG. 5 (a). A portion corresponding to the latter half of the control data shown is missing (see B3 in FIG. 5C). On the other hand, if the trailer part b is made too short in order to improve the remote control operability, the second half of the control data becomes difficult to receive as in the prior art as described in FIG. Since the interval between the control data and the second control data becomes narrow, it may be difficult to distinguish these control data.

  Thus, remote control operability and signal reception are in a trade-off relationship, and it is difficult to achieve both remote control operability and signal reception by simply increasing or decreasing the length of the trailer part b. is there. Therefore, the signal transmission unit 10 and the signal transmission unit 20 according to the present embodiment are the limit time of the trailer unit that is not affected by the disturbance light and the time Xmax corresponding to the upper limit value of the receivable gain of the remote control signal 1. And the time T2 of the trailer unit b is controlled using the limit time of the trailer unit in which the main body can identify the remote control signal 1 and the time Xmin corresponding to the lower limit value of the receivable gain of the remote control signal 1. It is configured.

  Hereinafter, the operation will be described with reference to FIG. FIG. 6 is a flowchart for controlling the time T2 of the trailer unit b.

  When the remote control signal 1 is transmitted to the receiving unit 6 by operating the remote control (step S1), the receiving unit 6 determines whether or not the remote control signal 1 has been received (step S2).

  The state of receiving the remote control signal 1 indicates that all the control data included in the remote control signal 1 has been normally received. For example, when the distance between the remote control and the main body is short, the reception level of the remote control signal 1 reaching the reception unit 6 is an appropriate value, or when the gain at the reception unit 6 is an appropriate value, the reception unit 6 receives the remote control signal 1 Is determined to have been received.

  In other words, it can be said that the remote control signal 1 is not received when at least one control data included in the remote control signal 1 is not received. For example, when the remote control signal 1 reaching the reception unit 6 has a low reception level because the distance between the remote control and the main body is long, or when the gain in the reception unit 6 is not an appropriate value, the reception unit 6 receives the remote control signal 1. Is determined not to be received.

  If the remote control signal 1 is received in step S2 (step S2, Yes), has the receiver 6 received the remote control signal 1 (all control data) transmitted from the remote control a plurality of times normally n times successfully? It is determined whether or not (step S3). The value of n is an arbitrary number. For example, the value of n is set in consideration of the intensity of disturbance light in the usage environment of the remote control. When n is assumed to be 3, the number of transmissions of the remote control signal 1 transmitted from the transmission unit 3 is assumed. Means three times.

  The determination in step S3 is that the remote control signal 1 received in step S2 is not received, for example, temporarily unaffected by disturbance light, but is correctly received because the gain and other values are appropriate values. This is to confirm that it was done.

  In step S3, when the receiving unit 6 receives the remote control signal 1 normally n times continuously (step S3, Yes), the control unit 7 makes a determination in step S4.

  In step S4, the control unit 7 determines whether or not the time T2 is equal to the time Xmin. When the time T2 is not equal to the time Xmin, that is, when the time T2 (for example, 15 ms) exceeds the time Xmin (for example, 10 ms) (step S4, No), the control unit 7 causes the trailer of the remote control signal 1 to be generated next time. A request signal 7a for shortening the time T2 of the part b is generated and output to the transmitting part 8 (step S6).

  The reason for performing the determinations in steps S2 to S4 and S6 in this manner is that when the remote control signal 1 is normally received in steps S2 and S3, the distance between the remote control and the main body is relatively short and the gain is high. This is because the remote control operability is improved by shortening the time T2 within a range where there is a high possibility that the gain does not decrease excessively.

  The transmission unit 8 that has received the request signal 7 a sets the request signal 7 a to the main body signal 2 and transmits it to the reception unit 4. And the control part 5 which received the main body signal 2 via the receiving part 4 controls the transmission part 3 so that time T2 may be reduced, for example by several milliseconds, based on the request signal 7a contained in the main body signal 2. FIG. For example, assuming that the current time T2 is 15 ms and the time Xmin is 10 ms, the control unit 5 outputs a request command for changing the time T2 from 15 ms to 14 ms to the transmission unit 3. The transmission unit 3 sets a time (for example, 14 ms) shorter than the time T2 (for example, 15 ms) of the current trailer unit b in the next trailer unit b, and receives the remote control signal 1 in which the trailer unit b is set as the reception unit 6. Send to.

  In step S4, when the time T2 is equal to the time Xmin (step S4, Yes), the control unit 7 requests to maintain the next time T2 of the trailer unit b at the same time as the time T2 of the current trailer unit b. The request signal 7a to be generated is generated and output to the transmission unit 8 (step S5).

  In step S3, when the receiving unit 6 does not normally receive the remote control signal 1 continuously n times (step S3, No), the remote control signal 1 is temporarily not received because the gain is relatively low. is assumed. Therefore, the control unit 7 maintains the time T2 of the trailer unit b at the same time as the current time T2 by performing the process of step S5 instead of the process of step S6 for reducing the gain. That is, since there is no problem in the reception performance and remote control operability of the remote control signal 1 even at the current time T2, the variable control of the time T2 is not performed.

  Next, when the remote control signal 1 is not received in step S2 (step S2, No), since the distance between the remote control and the main body is relatively long, the reception level of the remote control signal 1 reaching the receiving unit 6 is low, or There is a probability that the gain is not an appropriate value.

  In this case, the receiving unit 6 determines whether or not the remote control signal 1 could not be received continuously m times (step S7). The value of m is an arbitrary number like n, and is set in consideration of the intensity of disturbance light under the usage environment of the remote control, for example.

  In step S7, when the remote control signal 1 cannot be continuously received m times (step S7, Yes), since the gain may be too high, the control unit 7 determines in step S8.

  In step S8, the control unit 7 determines whether or not the time T2 is equal to the time Xmax. When the time T2 is not equal to the time Xmax, that is, when the time T2 (for example, 15 ms) exceeds the time Xmax (for example, 20 ms) (step S8, No), the control unit 7 causes the trailer of the remote control signal 1 to be generated next time. A request signal 7a for increasing the time T2 of the part b is generated and output to the transmitting part 8 (step S9).

  The reason for performing the determinations in steps S2, S7, and S8 in this manner is that if the remote control signal 1 is not normally received in steps S2 and S7, the distance between the remote control and the main body is relatively long and the gain is too low. This is because there is a possibility that the time T2 is lengthened within a range in which the gain does not become too high, thereby improving the reception of the remote control signal 1.

  The transmission unit 8 that has received the request signal 7 a sets the request signal 7 a to the main body signal 2 and transmits it to the reception unit 4. And the control part 5 which received the main body signal 2 via the receiving part 4 controls the transmission part 3 so that time T2 may be increased several milliseconds, for example based on the request signal 7a contained in the main body signal 2. FIG. For example, assuming that the current time T2 is 15 ms and the time Xmax is 20 ms, the control unit 5 outputs a request command for changing the time T2 from 15 ms to 16 ms to the transmission unit 3. The transmission unit 3 sets a time (for example, 16 ms) shorter than the current time T2 (for example, 15 ms) of the trailer unit b in the next trailer unit b, and receives the remote control signal 1 in which the trailer unit b is set as the reception unit 6. Send to.

  In step S8, when the time T2 is equal to the time Xmax (step S8, Yes), the control unit 7 performs the process of step S5. Similarly, when the remote control signal 1 can be received continuously m times in step S7 (step S7, No), there is a possibility that the remote control signal 1 could not be temporarily received although the gain is slightly low. Therefore, the process of step S5 is performed by the control unit 7. That is, since there is no problem in the reception performance and remote control operability of the remote control signal 1 even at the current time T2, the variable control of the time T2 is not performed.

  From the above operation, the time T2 of the trailer unit b is controlled to a value that can achieve both remote control operability and signal reception.

  Although the present embodiment has described a configuration example using two control data for the remote control signal 1, the control data included in the remote control signal 1 is not limited to two. In the present embodiment, for convenience of explanation, the configuration example for controlling the length of the time T2 of the second trailer unit b has been described. However, the trailer unit to be controlled is the second trailer unit b. However, the present invention is not limited to this, and the time of another trailer unit (for example, trailer unit c) may be controlled.

  As described above, the remote control system according to the present embodiment includes the first signal transmission unit that outputs a signal of a predetermined system configured as having the reader unit, the data unit, and the trailer unit as the remote control signal 1. A remote control system applied to a remote controller including a (signal transmission unit 10) and a control target device (main body) including a second signal transmission unit (signal transmission unit 20) that receives a remote control signal 1. The signal transmission unit 10 has a transmission unit 3 that sets the time of the trailer unit to a predetermined length and transmits the remote control signal 1 including the set trailer unit to the signal transmission unit 20, and the signal transmission unit 20 When receiving the reader unit and the data unit, the signal amplification gain is decreased to receive the remote control signal 1, and when the trailer unit is received, the signal amplification gain is increased to increase the remote control signal 1. A request for requesting that the time of the trailer unit be longer or maintained than the current time when the reception unit 6 that receives the signal 1 and the reception state of the remote control signal 1 in the reception unit 6 are poor (eg, step S2 No). If the reception state of the remote control signal 1 in the reception unit 6 is good (for example, step S2 Yes), the request signal 7a is generated to request that the time of the trailer unit be shorter or maintained than the current time. Therefore, the time T2 of the trailer unit is controlled to a value that can achieve both remote control operability and signal reception. Therefore, when the distance between the remote control and the main body is relatively short and the gain is high, the time T2 is controlled in a direction in which the gain does not decrease excessively, and as a result, the remote control operability is improved. Is done. When the distance between the remote controller and the main body is relatively long and the gain may be too low, the time T2 is controlled in a direction in which the gain does not become too high. As a result, the remote control signal is controlled. 1 is improved.

  In addition, when the time T2 of the trailer unit is made shorter than the current time, the control unit 7 according to the present embodiment uses the time T2 of the trailer unit corresponding to the lower limit value of the receivable gain of the remote control signal 1. When the request signal 7a is generated to approach the time (time Xmin) and the time T2 of the trailer unit is made longer than the current time, the time T2 of the trailer unit corresponds to the upper limit of the receivable gain of the remote control signal 1. Since the request signal 7a approaching the second time (time Xmax) is generated, the transmission unit 3 of the remote controller quickly changes the time T2 of the trailer unit based on the latest request signal 7a. The remote control signal 1 including the signal is transmitted to the signal transmission unit 20. As a result, the gain is controlled in real time, and it is possible to achieve both remote control operability and signal reception.

  Further, the signal transmission unit 10 according to the present embodiment includes a reception unit 4 that receives the request signal 7a from the signal transmission unit 20, and the transmission unit 3 receives the request signal 7a related to the first time Xmin in the reception unit 4. Is received, the trailer unit changed to a time shorter than the current time of the trailer unit is set as the remote control signal 1 and transmitted to the signal transmission unit 20, and the request signal regarding the second time Xmax is received by the reception unit 4. When 7a is received, the trailer unit changed to a time longer than the current time of the trailer unit is set as the remote control signal 1 and transmitted to the signal transmission unit 20. For example, the time of the trailer unit b is The time T2 is set longer than the conventional time T1 (see FIG. 4). Therefore, even when the first data portion is long, a gain is ensured when the second data portion is received, and the lack of the receiving portion output signal 6a is suppressed (B1 in FIG. 3C). reference).

  In addition, the remote controller according to the present embodiment is a remote controller including a signal transmission unit 10 that outputs a signal of a predetermined method including a reader unit, a data unit, and a trailer unit as a remote control signal 1. Thus, the signal transmission unit 10 is a request signal 7a transmitted from the control target device, and when the reception state of the remote control signal 1 is poor in the control target device, the time T2 of the trailer unit is made longer than the current time. Alternatively, the request signal 7a for requesting to be maintained, and the request signal 7a for requesting that the time T2 of the trailer unit be shorter or maintained than the current time when the reception state of the remote control signal 1 is good in the control target device. And a request signal 7 for requesting the receiver 4 to make the time T2 of the trailer longer than the current time. Is received, the trailer unit changed to a time longer than the current time of the trailer unit is set as the remote control signal 1 and transmitted to the control target device. In the receiving unit 4, the time T2 of the trailer unit is set to the current time. When the request signal 7a requesting to be shorter is received, the transmission unit 3 that sets the trailer unit changed to a time shorter than the current time of the trailer unit as the remote control signal 1 and transmits it to the control target device Therefore, the time T2 of the trailer unit is controlled to a value that can achieve both remote control operability and signal reception. Therefore, when the distance between the remote control and the main body is relatively short and the gain is high, the time T2 is controlled in a direction in which the gain does not decrease excessively, and as a result, the remote control operability is improved. Is done. When the distance between the remote controller and the main body is relatively long and the gain may be too low, the time T2 is controlled in a direction in which the gain does not become too high. As a result, the remote control signal is controlled. 1 is improved.

  Further, in the control target device according to the present embodiment, when the time T2 of the trailer unit is made shorter than the current time, the time T2 of the trailer unit corresponds to the first lower limit value of the receivable gain of the remote control signal 1. When the request signal 7a is generated to approach the time Xmin of the trailer and the time T2 of the trailer unit is made longer than the current time, the time T2 of the trailer unit is a second time corresponding to the upper limit value of the receivable gain of the remote control signal. When the request signal 7a for approaching Xmax is generated and the request signal related to the first time Xmin is received by the reception unit 4, the transmission unit 3 sets the trailer unit changed to a time shorter than the current time of the trailer unit. When the remote control signal 1 is set and transmitted to the device to be controlled and the receiving unit 4 receives a request signal related to the second time Xmax, Since the trailer unit changed to a time longer than the time of the trailer unit is set as the remote control signal 1 and transmitted to the control target device, the transmission unit 3 of the remote control uses the latest request signal 7a to The time T2 is quickly changed, and the remote control signal 1 including this trailer unit is transmitted to the signal transmission unit 20. As a result, the gain is controlled in real time, and it is possible to achieve both remote control operability and signal reception.

  Note that the remote controller and the remote control system described in the embodiments show an example of the contents of the present invention, and can be combined with other known techniques, and do not depart from the gist of the present invention. Of course, it is possible to change the configuration such as omitting a part of the range.

  As described above, the present invention can be applied to a remote controller and a remote control system, and is particularly useful as an invention capable of improving the reception performance of a remote control signal even when the amount of control data is large.

DESCRIPTION OF SYMBOLS 1 Remote control signal 2 Main body signal 3, 8 Transmission part 4, 6 Reception part 5 Control part 7 Control part (signal generation part)
6a Reception unit output signal 7a Request signal 10 Signal transmission unit (first signal transmission unit)
20 Signal transmission unit (second signal transmission unit)
Xmin first time Xmax second time

Claims (5)

A remote controller including a first signal transmission unit configured to output a signal of a predetermined method including a reader unit, a data unit, and a trailer unit as a remote control signal; and a second signal transmission for receiving the remote control signal A remote control system that is applied to a control target device including a unit,
The first signal transmission unit includes:
A transmission unit that sets the time of the trailer unit to a predetermined length and transmits a remote control signal including the set trailer unit to the second signal transmission unit;
The second signal transmission unit includes:
When receiving the reader unit and the data unit, the signal amplification gain is decreased to receive the remote control signal, and when receiving the trailer unit, the signal amplification gain is increased to receive the remote control signal. A receiver,
When the reception state of the remote control signal in this receiving unit is poor, a request signal is generated to request that the time of the trailer unit be longer or maintained than the current time, and the reception state of the remote control signal in this receiving unit is good A signal generation unit that generates a request signal for requesting that the time of the trailer unit be shorter or maintained than the current time. The signal generator is
When the time of the trailer unit is made shorter than the current time, a request signal for bringing the time of the trailer unit closer to the first time corresponding to the lower limit value of the receivable gain of the remote control signal is generated,
When the time of the trailer unit is made longer than the current time, a request signal for generating the time of the trailer unit close to a second time corresponding to the upper limit value of the receivable gain of the remote control signal is generated. The remote control system according to claim 1. The first signal transmission unit includes:
A receiving unit for receiving a request signal from the second signal transmission unit;
The transmission unit of the first signal transmission unit is:
When a request signal related to the first time is received by the receiving unit, the trailer unit changed to a time shorter than the current time of the trailer unit is set as a remote control signal and transmitted to the second signal transmission unit And
When a request signal related to the second time is received by the receiving unit, the trailer unit changed to a longer time than the current time of the trailer unit is set as a remote control signal and transmitted to the second signal transmission unit The remote control system according to claim 1 or 2, characterized in that: A remote controller including a signal transmission unit that outputs a signal of a predetermined method configured as a reader unit, a data unit, and a trailer unit as a remote control signal,
The signal transmission unit is
A request signal transmitted from the device to be controlled, and a request for requesting that the time of the trailer unit be longer or maintained than the current time when the reception state of the remote control signal is bad in the device to be controlled A receiving unit that receives a signal and a request signal that requests that the time of the trailer unit be shorter or maintained than the current time when the reception state of the remote control signal is good in the device to be controlled;
When a request signal for requesting that the time of the trailer unit be made longer than the current time is received in the receiving unit, the trailer unit changed to a time longer than the time of the current trailer unit is set as a remote control signal When the request signal for requesting the time of the trailer unit to be shorter than the current time is received by the receiving unit, the time is shorter than the time of the current trailer unit. A transmission unit that sets the changed trailer unit as a remote control signal and transmits it to the control target device;
A remote controller comprising: In the control target device,
When the time of the trailer unit is made shorter than the current time, a request signal is generated to bring the time of the trailer unit closer to the first time corresponding to the lower limit value of the receivable gain of the remote control signal,
When the time of the trailer unit is made longer than the current time, a request signal is generated that brings the time of the trailer unit closer to a second time corresponding to the upper limit value of the receivable gain of the remote control signal,
The transmitter is
When the request signal related to the first time is received at the receiving unit, the trailer unit changed to a time shorter than the current trailer unit time is set as a remote control signal and transmitted to the control target device,
When the request signal related to the second time is received by the receiving unit, the trailer unit changed to a longer time than the current time of the trailer unit is set as a remote control signal and transmitted to the control target device. The remote controller according to claim 4, wherein

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