JP2000032571A - Transmission reception method for control signal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of transmission processing when a different operation is conducted in a remote control system. SOLUTION: In this transmission reception method, when an operation button 2a of a transmitter is depressed, a control section of the transmitter generates a start pulse signal 15 used to bring a receiver side in a reception state and also generates a header pulse 23, a control pulse signal 17, a header pulse 23, an inverted control pulse signal 18, a header pulse 23, and a control pulse signal 19, which are modulated and the modulated signal is transmitted. In this case, a pause period (t) is provided to the control pulse signals 17, 19, and the inverted control pulse signal 18 and a dummy header pulse 24 are generated during this period. Whether or not an operation button is again depressed for the pause period (t) and a header period t1 is monitored. For example, when it is confirmed that an operation button 2b is depressed after the operation button 2a, after the end of the transmission of the transmission pulse group related to the preceding operation, the transmission pulse group relating to other operations is continuously sent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transmitting and receiving an operation signal for transmitting and receiving an operation signal for locking and unlocking, for example, a door and a key of an automobile.

[0002]

2. Description of the Related Art Conventionally, a remote control system having the following configuration has been used for operations such as locking and unlocking an automobile door, turning on or off a headlight, and opening and closing a trunk. .

This system comprises a receiving device provided on the vehicle side, a driving device for driving an operation object such as unlocking of the vehicle door based on an operation signal received by the receiving device, and a receiving device from outside the vehicle. A small transmitting device such as a key holder for transmitting the operation signal or the like of the operation target to the device.

[0004] The transmitting device is provided with a plurality of operation buttons, and a predetermined operation signal is transmitted by operating any of the operation buttons. As this operation signal, for example, when a certain operation button is operated, a signal for locking or unlocking the door is transmitted, and when another operation button is operated, a signal for turning on or off the headlight is transmitted. When a further operation button is operated, a signal for opening and closing the trunk room is transmitted.

[0005]

However, in the above-mentioned conventional apparatus, when one of the operation buttons is operated immediately after the operation of another operation button, for example, the operation of turning on the headlight or the interior light is performed first, and then the operation is performed. When the driver unlocks the door of the driver's seat, transmission data corresponding to the operation of the previous operation button is being transmitted at the time when the subsequent operation button is pressed. Therefore, conventionally, the transmission processing of the operation signal of the operation button pressed later is not accepted and canceled.

Therefore, only the operation corresponding to the operation button pressed first is performed, and the operation performed by the operation button pressed last is not performed. Therefore, it is necessary to transmit the next operation signal again after confirming the completion of the previously input operation, which complicates the operation and requires a long operation time for performing a plurality of operations. Also, for example, if the driver's seat door unlock operation is performed first, and then the operation of unlocking all doors is performed immediately after that, the driver's seat door unlock operation may overlap in both operations. Nevertheless, all the doors must be unlocked again after the driver's seat doors have been unlocked, resulting in duplicate operations.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for transmitting and receiving an operation signal in which, when a plurality of operation inputs are performed in succession, an operation signal transmission process corresponding to each input is performed efficiently.

[0008]

According to the present invention, there is provided a method for transmitting and receiving an operation signal, comprising: a transmission unit for transmitting a plurality of types of operation signals;
A receiving unit that receives the operation signal and performs a processing operation based on the operation signal, wherein after an operation for transmitting a certain operation signal is performed, the operation signal is transmitted in accordance with the transmission operation When transmission of another operation signal is selected in the meantime, after the transmission of the previous operation signal is completed, the other operation signal is transmitted subsequently.

In the present invention, a storage means for storing the operation signal is provided, and when the other operation signal is selected, the operation signal is stored in the storage means, and the transmission of the previous operation signal is performed. It is preferable that the signal stored in the storage means be transmitted subsequently after waiting for completion.

Further, in the present invention, the operation signal may be divided on the way and transmitted with a pause period interposed, and during this pause period, it may be monitored whether a new operation selection has been made.

[0011]

According to the above means, when an operation signal for causing the receiving section to perform an operation is output from the transmitting section, and transmission of another operation signal whose operation does not overlap with the previous operation signal is selected. Since the other operation signals are continuously transmitted after the transmission of the previously selected operation signal is completed, the transmission selection operation of another operation signal can be performed without waiting for the completion of the transmission of the previous operation signal. Thus, the transmission operation of a plurality of operation signals can be easily and reliably performed.

The pause period is a monitoring period for determining whether or not another operation has been performed. At this time, it is monitored whether or not another operation has been performed. It is not necessary to repeatedly perform the monitoring process of whether or not the process has been performed, and the burden on the control unit of the transmission unit can be reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is an external view of a transmitter constituting a remote control system mounted on a vehicle, FIG. 2 is a block diagram showing a circuit configuration of the transmitter shown in FIG. 1, and FIGS. 3 (A), (B) and (C) are FIGS. FIG. 4 is a waveform diagram showing types of pulses generated by a pulse generation unit of the transmitting device shown in FIG. 4, FIG. 4 is a waveform diagram showing header pulses and operation signal pulses, and FIG. 5 is a circuit block diagram showing a configuration of the receiving device. 6 is a waveform diagram showing a transmission pulse group generated by one transmission operation in the transmission device, and FIGS. 7 (A) to 7 (D).
FIG. 4 is an explanatory diagram showing a detailed configuration of an operation code included in an operation signal.

The transmitting device 1 shown in FIG. 1 is a small one having a size of a key holder which can be easily carried, and an operation unit 2 is provided on a surface of the transmitting device shown in FIG. The operation unit 2 is provided with three operation buttons 2a to 2c. Also, as shown in FIG. 2, a CPU serving as a control center of the apparatus is internally provided.
(Central Processing Unit) control unit 3
A memory 4 such as a RAM (Random Access Memory) for storing and holding an operation signal corresponding to the operation of the operation buttons 2a to 2c of the operation unit 2, an activation signal for setting the receiving side to a reception processing state, and the like; 4, a pulse generator 5 for generating a pulse corresponding to a start signal, an operation signal, or the like written in the start signal 4; a start signal (hereinafter, referred to as a start pulse signal) and an operation signal (hereinafter, an operation pulse signal) converted into the pulse train; ), And a transmitting section 6 for transmitting the modulated signal to a receiving section described later, an antenna 7, a power supply 8, and the like.

FIG. 6 shows a transmission pulse group generated by the control unit 3 and the pulse generation unit 5 by one operation. 1
Each transmission pulse group includes a start pulse signal 15, a header pulse 23 following the start pulse signal 15, and an operation pulse signal 17 further following the start pulse signal. Header pulse 23
Is generated, and “1” and “0” of the operation pulse signal 17 are generated.
An operation pulse signal 18 having the same contents as the header pulse 23 and the operation pulse signal 17 is generated next. The series of transmission pulses are modulated by the transmission unit 6 and transmitted.

The operation pulse signal 17 has a data length of n bits, as shown in FIG. In this operation pulse signal 17, the upper m bits are identification information (ID code) indicating the correspondence between the specific transmitter 1 and the receiver, and the lower 8 bits indicated by 17e are operation codes, for example. This operation code 1
7e is each part to be operated (for example, a door lock mechanism,
It is set in response to an operation command of a trunk lock mechanism or the like.

FIGS. 7A to 7D show the structure of the 8-bit operation code 17e. In addition,
FIGS. 7A to 7C show the contents of the operation code transmitted when the operation buttons 2a to 2c are pressed only once, and FIG. It is transmitted when it is pressed twice in a row.

Each operation code 17e is, for example, a function code when upper four bits are operated by operating the operation buttons 2a to 2c or when the same operation button 2a is continuously pressed, and lower four bits are different for each automobile. It is a user code set as follows. In this embodiment, the operation button 2a is an instruction to lock and unlock the door of the driver's seat, the operation button 2b is an instruction to turn on and off the headlights, and the operation button 2c is an instruction to lock and unlock the trunk room. FIG. 4D shows an instruction to lock and unlock all doors including the driver's seat.

The control unit 3 determines that the operation button 2a has been operated twice in duplicate within a predetermined time, in addition to the function as the control center of the present apparatus as described above. 4 has a function of reading out an operation signal corresponding to the operation pulse signal shown in FIG. 7D from the operation signals stored and held in 4, and transferring this to the pulse generation unit 5.

The start pulse signal 15 (see FIG. 6) is 2
Continuation of the binary signal "0" and the operation pulse signal "1"
And a pulse train represented by “0”. In this embodiment, based on the binary signal generated by the control unit 3, the pulse generation unit 5 converts the binary signal into rectangular pulses 21 and 22 having different widths as shown in FIGS. 3A and 3B. You. In this case, the pulse 21 corresponding to “0” has a pulse width of T1 μs as shown in FIG. 9A, and the pulse 22 corresponding to “1” has a pulse width T3 (twice that of the signal of “0”). 2 * T
1) It is μs. These pulses expressing “1” and “0” are generated at the same cycle (T2 (4 * T1) μs).

The header pulse 23 has a pulse width different from that of each of the pulses 21 and 22.
The pulse width is T2 (4 * T1) μs as shown in FIG. By receiving the header pulse 23, the receiving side can recognize that the operation pulse signals 17, 19 or the inverted pulse signal 18 will continue next.

Each signal transmitted from the transmitting side having the above configuration is received by the receiving side having the configuration shown in FIG. The receiving side is a receiving antenna 9, a receiving unit 10 that tunes out each signal transmitted from the transmitting device 1, converts the signal to an intermediate frequency, and demodulates the signal, and serves as a control center of the device and receives the signal. A control unit 11 mainly configured by a CPU (Central Processing Unit) that generates a drive signal based on a signal, and drives each operation target unit such as a door lock mechanism based on the drive signal output from the control unit 11. Receiving device 14 including driving unit 12
And an operation target 13 driven by the driving unit 12.

Next, according to the remote control system having the above configuration,
The operation will be described. (When different operation buttons are operated within a predetermined time) FIG. 8 shows a case where different operation buttons, for example, 2a and 2c are continuously pressed, that is, for example, a door unlock operation and a trunk room unlock operation are continuous. FIG. 7A shows the case where the operation buttons 2a and 2c are turned ON / OFF.
FIG. 4B shows the relationship between the operation timing of the operation button shown in FIG. 4A and the transmission pulse train generated by the control unit 3 and the pulse generation unit 5 of the transmission device 1. .

First, when the operation button 2a is pressed, a series of transmission pulse groups shown in FIG. 6 are generated in the control unit 3 and the pulse generation unit 5. The contents of the operation code at this time are as shown in FIG. In FIG. 8B, a series of transmission pulses supporting the door unlocking corresponding to the operation of the operation button 2a is indicated by S1. When another operation button 2c is pressed while the transmission pulse group S1 is being generated and further modulated and transmitted by the transmission unit 6, the control unit 3 receives the operation signal, and the operation signal is The information is temporarily stored in a register or the like in the control unit 3. Alternatively, when the operation of the operation button 2c is received, an operation signal (operation signal including the operation code content shown in FIG. 7C) corresponding to this operation is extracted from the memory 4 and is directly stored in the register of the control unit 3. And so on.

After the transmission of the transmission pulse group S1 is completed, the transmission pulse group S2 including the operation code (see FIG. 7C) corresponding to the operation of the operation button 2c is continuously sent out. The signal is modulated and transmitted by the transmission unit 6. In this case, as shown in FIG. 8B, the transmission pulse group S2 corresponding to the operation button 2c includes a start pulse signal 15, a header pulse 23, an operation pulse signal 17, a header pulse 23, a reverse operation pulse signal 18, a header A pulse 23 and further an operation pulse signal 19, and a transmission pulse group S2 having the same contents as in FIG. 6 including an operation code for unlocking a trunk room, for example, is continuously transmitted as it is.

Alternatively, in the subsequent transmission pulse group S2,
The start pulse signal 15 is omitted, and after the previous transmission pulse group S1 is completely transmitted, the header pulse 23, the operation pulse signal 17, the header pulse 2
3. The inversion operation pulse signal 18, the header pulse 23, and the operation pulse signal 19 may be transmitted.

On the receiving side, the received transmission pulse signal S
In response to the 1 start pulse signal 15, the signal rises to the reception state. In each of the subsequently transmitted transmission pulse groups S1 and S2, the collation of the contents of the operation pulse signal 17 and the inverted operation pulse signal 18 and the comparison and check of the inverted pulse signal 18 and the operation pulse signal 19 are performed. It is. In each of the transmission pulse groups S1 and S2, the ID code is recognized from the signal after the check,
This corresponds to the I stored in the storage unit in the control unit 11 shown in FIG.
Checked against D code. When the ID codes match, the operation codes in FIGS. 7A and 7C are decoded, and the door is unlocked and the trunk is unlocked.

Next, FIG. 9 shows another example of a transmission pulse group transmitted from the transmission device 1. In this example, when a certain operation button, for example, 2a is pressed, a start pulse signal 15 is generated by the control unit 3 and the pulse generation unit 5, and furthermore, T2 (4 * T1) μs as shown in FIG. Is generated. Further, an operation pulse signal 17 having the operation code shown in FIG. 7A is generated.
It is divided into two parts denoted by a and 17b, between which a pause period t is formed. Similarly, the inversion operation pulse signal 18 and the operation pulse signal 19 are 18a, 19a and 18b, 19b.
And a pause period t is set in between. Note that the control unit 11 on the receiving side recognizes that the 17b, 18b, and 19b following the pause period t are operation pulse signals or inverted pulse signals.
A dummy header pulse 24 having a pulse width equivalent to the header pulse shown in FIG. 9B is generated.

As described above, by providing the pause period t in the middle of the operation pulse signal and the inverted pulse signal, the operation button is pressed again between the pause period t and the header period t1 before and after the header pulse 23 is generated. It can be done during the monitoring period.

That is, in the case of the transmission pulse group as shown in FIG. 6 and FIG.
When the next operation button 2a or 2c or the like is pressed during the generation of the operation pulse 7, the control pulse signal 17
It is necessary to perform a monitoring operation process for determining whether or not the operation button has been pressed in parallel with the generation of. Therefore, the processing load on the CPU and the like of the control unit 3 increases. Therefore, as shown in FIG.
Period t during which generation of operation pulse signal 17 and the like is suspended
Is provided, it is possible to monitor whether or not the operation button is pressed in both the periods t1 and t. That is, the control unit 3 shifts to the monitoring operation process of whether or not the operation button has been pressed only during the pause periods t and t1, thereby eliminating the need for the control unit 3 to perform parallel processing. The burden on the control unit 3 can be reduced.

Since the time for a person to press an operation button with a finger is increased to some extent, by providing a pause period and a header period t1 shown in FIG. 9, this period is almost always within the time when the operation button is pressed. , And it is possible to confirm that the operation button has been pressed.

By generating the transmission pulse group as shown in FIG. 9, it is possible to reliably perform the continuous transmission or the interruption transmission when the operation button is continuously pressed as shown in FIG. Note that the present invention is not limited to the above-described in-vehicle remote operation system, but can be used for various other remote operations.

[0033]

According to the present invention, an operation input can be easily performed in a short time, and even when a different operation button is operated within a predetermined time, the operation button operated later is operated again. It is not necessary, the operation is easy, and the operation can be performed in a short time. Further, the operation input can be easily performed in a short time, and the operation during the other processing operation can be reliably monitored even during the execution of the other processing operation.

[Brief description of the drawings]

FIG. 1 is an external view of a transmission device of a vehicle-mounted remote operation system.

FIG. 2 is a block diagram showing a circuit configuration of the transmission device shown in FIG.

FIGS. 3A to 3C are waveform explanatory diagrams showing types of pulses generated by a transmission device.

FIG. 4 is an explanatory diagram showing a detailed configuration of an operation code included in an operation pulse signal.

FIG. 5 is a circuit block diagram showing a configuration on a receiving side.

FIG. 6 is an explanatory diagram of a waveform of a transmission pulse group generated by the transmission device in one operation.

FIGS. 7A to 7D are explanatory diagrams showing operation codes included in an operation pulse signal for each operation type.

8A is a diagram showing ON / OFF timings of operation buttons when different operation buttons are continuously pressed, and FIG.
FIG. 4 is a waveform explanatory diagram showing a transmission pulse train at that time.

9A is a diagram showing ON / OFF timings of operation buttons when different operation buttons are continuously pressed, and FIG.
FIG. 4 is a waveform explanatory diagram showing a transmission pulse train having a pause period transmitted at that time.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission device 2 Operation part 2a to 2c Operation button 3 Control part 4 Memory 5 Pulse generation part 17, 19 Operation pulse signal 18 Inversion operation pulse signal 23 Header pulse 24 Dummy header pulse 17e Operation code t Pause period t1 Header period

Claims (3)

[Claims] A transmitting unit for transmitting a plurality of types of operation signals;
A receiving unit that receives the operation signal and performs a processing operation based on the operation signal, wherein after an operation for transmitting a certain operation signal is performed, the operation signal is transmitted in accordance with the transmission operation An operation signal transmission / reception method, characterized in that when transmission of another operation signal is selected in the meantime, after transmission of the previous operation signal is completed, another operation signal is transmitted subsequently. 2. A storage means for storing the operation signal, wherein when the other operation signal is selected, the operation signal is stored in the storage means, and the transmission of the previous operation signal is completed. 2. The method for transmitting and receiving an operation signal according to claim 1, wherein the signal stored in said storage means is transmitted subsequently after waiting. 3. The operation signal according to claim 1, wherein the operation signal is divided in the middle and transmitted with a pause period interposed therebetween, and during this pause period, it is monitored whether a new operation selection is performed. How to send and receive operation signals.