JP3208037B2 - Remote control device for vehicle load - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle which is capable of driving a corresponding vehicle load when a transmitting device transmits an aerial propagation signal corresponding to an operation signal of an operation switch and receives the signal through a vehicle-side receiving device. The present invention relates to a remote control device for a load.

[0002]

2. Description of the Related Art Heretofore, as this kind, there has been used, for example, a radio key of an automobile. This is because the transmitter is built in the key grip part holding the mechanical key, and when either the lock switch or the unlock switch provided on the surface of the key grip is operated, the code corresponding to this is operated. It is configured to transmit a signal as a radio signal.

[0003] Then, when the ID code included in the received radio signal corresponds to itself, that is, when the received ID code is the ID code stored therein, When they match, the door lock mechanism is locked or unlocked in accordance with the operation code signal included in the radio signal. This eliminates the need for the user to insert the key plate into the key cylinder of the door and perform the turning operation each time, thereby improving the usability.

In this case, in recent years, in order to enhance the confidentiality of signal transmission / reception between the radio key side and the automobile side to improve security, for example, a plurality of ID codes are set on both sides. Is provided in which the code signal is cyclically changed on both the radio key side and the receiving apparatus side each time the lock switch and the unlock switch are operated.

[0005]

However, the conventional configuration as described above has the following inconvenience in use. That is, such a radio key is basically based on a one-way communication system in which a code signal is only transmitted and a receiving operation is not performed. Therefore, in the case where the ID code is of the rolling code type as described above, the ID code is sequentially changed and set in the internal circuit on the radio key side irrespective of the presence or absence of reception on the receiving device side.

In the receiving apparatus, every time a transmission signal from the radio key is received, the ID code is sequentially changed and set to synchronize with the radio key side.
When the transmission signal from the radio key cannot be received, only the ID code of the radio key is changed and set. As a result, when the radio key is used next time, the synchronization state is deviated, so that it is necessary to repeatedly operate the lock switch or the unlock switch of the radio key until the ID code has completed one cycle, which is inconvenient. There is a defect.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to improve usability by minimizing the occurrence of a synchronization state shift in a configuration in which confidentiality is enhanced by a rolling code system in one-way communication. It is an object of the present invention to provide a remote control device for a vehicle load that can achieve the following.

[0008]

According to the present invention, there is provided a transmitting apparatus for transmitting, as an aerial propagation signal, a transmission code signal including a transmission count code in which an addition value is sequentially added each time an operation switch is operated. A value obtained by adding a value of the transmission counting code included in the transmission code signal to the matching counting code stored in the storage means by the matching means, receiving the airborne signal, provided in the vehicle. A coincidence signal is output at the time of coincidence, and the transmission count code received in accordance with the output of the coincidence signal is updated and stored in the storage means as a new collation count code by the update means. And a receiving device configured to output a drive signal of the vehicle load corresponding to the operation code at that time in accordance with the output. And when the coincidence signal is not output as a collation result by the collation means, the value of the received transmission count code is set to be greater than the value of the collation count code. Is larger than the first allowable range, the matching signal is output .
Add the above value to the value of the counting code for collation and update
And remember the value of the transmission counting code received at that time.
It is stored in the storage means as an auxiliary counting code, and the
In the combined operation, the received transmission count code is
Adds the above addition value to the auxiliary counting code stored in the storage means.
The present invention is characterized in that an auxiliary collating means for outputting the coincidence signal is provided even in the case of coincidence with the calculated value (the invention of claim 1).

[0009]

Furthermore, the auxiliary checking means, said outputs a coincidence signal to come the Most smaller than the first allowable range A larger than the received values of said auxiliary count code transmission counter code It may be configured to (claim
2 ).

In each of the above configurations, the value of the received transmission count code is larger than the collation count code, within the first allowable range, and the auxiliary collation means does not output the coincidence signal. Temporary count code storage means for temporarily storing the count code for transmission at that time as a temporary count code, and temporary count stored in the temporary count code storage means for the value of the count code for transmission received within an allowable time. A provision may be made for provision of a temporary matching means for outputting the match signal when the code matches the value obtained by adding the addition value to the code (the invention of claim 3 ).

[0012]

According to the first aspect of the present invention, when the operation switch is operated, the transmission code signal is transmitted as an airborne signal in the transmission device. At this time, the transmission code signal includes, in addition to the operation signal corresponding to the operation switch, a transmission counting code to which an additional value is sequentially added for each operation. In the receiving device of the vehicle, when the airborne signal is received, the signal is decoded into a transmission code signal, and subsequently the transmission counting code included in the received transmission code signal is stored in the storage unit by the verification unit. It checks whether or not the value matches the value obtained by adding the added value to the count code, and outputs a match signal if they match. As a result, the control means outputs a drive signal to the vehicle load corresponding to the operation code, and the update means updates and stores the received transmission count code as a new collation count code in the storage means. I will be.

On the other hand, when the matching signal is not output by the matching means even when the airborne signal is received, the auxiliary matching means sets the value of the transmission count code received at that time in the matching means stored in the storage means. It is determined whether or not the value is larger than the value of the use counting code and is within the first allowable range. When the condition is satisfied, a coincidence signal is output, and as described above, The control means outputs a drive signal for the corresponding vehicle load.

As a result, the transmission code signal transmitted from the transmitting device is not received by the receiving device, and only the value of the transmission counting code on the transmitting device unilaterally adds the added value. Even if a synchronization error occurs due to this, a match signal is output under the condition that the value of the collation counting code updated and stored at the previous reception is within the above-described first allowable range. So you can
The driving of the vehicle load due to the incorrect transmission code signal can be prevented as much as possible while preventing the usability from lowering.

When the above-mentioned collation is performed and the coincidence signal is output , the auxiliary collating means adds the added value to the value of the collation counting code, updates and stores the same, and updates the transmission counting code received at that time. The value is stored in the storage means as an auxiliary count code. After that, the auxiliary collating means outputs the coincidence signal even when the received transmission count code matches the value obtained by adding the added value to the auxiliary count code stored in the storage means.

As a result, the vehicle load can be driven by the transmission code signal under a certain condition even if a synchronization error occurs between the transmitting and receiving devices, as described above, and the usability is reduced. The driving of the vehicle load due to the incorrect transmission code signal can be prevented as much as possible.

According to the vehicle load remote control device of the second aspect , the auxiliary collating means may determine that the value of the received transmission count code is larger than the value of the auxiliary count code and the first allowable
A match signal is output when it is within the range , and even if a synchronization error occurs between the transmitting and receiving devices, the vehicle load can be driven by the transmission code signal under a certain condition under a certain condition. As a result, the driving of the vehicle load due to the incorrect transmission code signal can be prevented as much as possible while preventing the usability from lowering.

According to the third aspect of the present invention, the provisional count code storage means stores the second value of the transmitted count code which is larger than the second count code .
When the matching signal is not output by the auxiliary collating means within the allowable range of , that is, when the value is equal to or less than the value of the auxiliary count code or exceeds the first allowable range , the transmission count code at that time is temporarily provisionally set. It is stored as a counting code.

In this case, the coincidence signal is not output at this time, but the temporary collating means stores the value of the transmission count code received within the allowable time from the time when the temporary count code was stored in the temporary count code storage means. A coincidence signal is output when the value coincides with the value obtained by adding the added value to the stored provisional count code.

Accordingly, even when the value of the transmission counting code of the transmission code signal transmitted from the transmitting device does not satisfy the above-mentioned condition with respect to the collation counting code or the auxiliary counting code stored in the receiving device. , The second tolerance
It becomes possible to output a coincidence signal only when it receives a transmission count code continuous in certain conditions of a the circumference yet is within the allowed time, the synchronization deviation between the transmission and reception apparatus Even if it occurs, under certain conditions, the vehicle load can be driven by the transmission code signal at that time, and the driving of the vehicle load due to an incorrect transmission code signal is prevented as much as possible while preventing usability reduction. Will be able to

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a radio key of an automobile will be described below with reference to the drawings.
FIG. 2 shows an outline of the electrical configuration.
The key grip 3 includes a key plate 2 and a key grip 3 for supporting the key plate 2. A lock switch 4 and an unlock switch 5 are provided on the key grip 3 as operating means.
A transmission circuit 6 is provided inside. When the lock switch 4 or the unlock switch 5 is operated as described later, the transmission circuit 6 sets the operation code to the ID.
The transmission code signal to which the code and the increment code C are added is transmitted as an airborne signal (for example, a radio signal).

An antenna 9 is connected via a receiving circuit 8 to a receiving device 7 provided on the vehicle body side of the automobile.
When the airborne signal is received, it is converted into an electric signal and input to the receiving device 7. Receiving device 7
Comprises a microcomputer, a ROM, a RAM, and the like, and performs a collation operation in accordance with a collation program described later. An IG key position switch 10 and an IG key ACC switch 11 provided on an ignition key cylinder (not shown) are connected to an input terminal of the receiving device 7, and a key insertion detection signal to the ignition key cylinder is input. At the same time, a detection signal of the ACC rotation position of the ignition is input. Also, the input terminal of the receiving device 7
A door courtesy switch 12 for detecting opening and closing of the door is connected.

The receiving device 7 controls the door lock control circuit 1 so as to control the lock operation or the unlock operation of the door lock mechanism 13 based on an externally received signal.
3a is connected. EEP as storage means for storing a main increment code C1 and a sub-increment code C2 for collating received signals
The ROM 14 is connected.

In FIG. 3, which shows the electrical configuration of the transmission circuit 6 of the radio key 1, a battery 16 is connected to the power input terminal of the switch circuit 15 and the above-described lock switch 4 and unlock switch 5 are connected to the input terminals. Is connected. When the switch 4 or 5 is operated, the switch circuit 15 outputs a start control signal from the control output terminal and outputs the DC power supply voltage of the battery 16 from the power supply output terminal as the control power supply voltage of each circuit. It has become. The control output terminal of the switch circuit 15 is connected to the clock circuit 17, the transmission code shift register 1
8, oscillation circuit 19 and EEPROM 20, ROM 21
Are connected to each input terminal.

In the clock circuit 17, its clock signal output terminal is connected to the clock signal input terminal of the transmission code shift register 18, and when a start control signal is given from the switch circuit 15, a clock signal of a predetermined frequency is output. It has become. The transmission code shift register 18 is an increment code shift register 18
a and an ID code shift register 18b, and shifts each digital code signal input as described later in accordance with a clock signal supplied from the clock circuit 17. The ID code shift register 18b outputs a digital code signal sequentially shifted from the increment code shift register 18a and applied to the code conversion circuit 22.

The code conversion circuit 22 converts a digital code signal sequentially supplied from the transmission code shift register 18 into a transmission signal and outputs the transmission signal to the modulation circuit 23. The modulation circuit 23 modulates a carrier having a predetermined frequency supplied from the oscillation circuit 19 with a transmission signal supplied from the code conversion circuit 22, and outputs the modulated signal from the antenna 25 via the output circuit 24 as a radio signal as an airborne signal.

The switch discrimination circuit 26 is connected to the lock switch 4 and the unlock switch 5, and when any one of them is operated, the switch discrimination circuit 26 discriminates this and performs an EEPRO.
A determination signal is provided to the M20 and the ROM 21. The EEPROM 20 internally stores an increment code C as a transmission count code. When an operation signal is supplied from the switch circuit 15, the EEPROM 20 outputs the internally stored increment code C to the increment code shift register 18a. In addition, when a switch operation signal is input from the switch determination circuit 26, the value of the increment code C is added as "1" as an added value and is updated and stored. Also, the ROM 21 is an I / O set uniquely for each automobile.
The D code is stored, and when an operation signal is given from the switch circuit 15, the ID code is output to the ID code shift register 18b.

Next, a functional block configuration of the receiving device 7 provided on the vehicle side will be described with reference to FIG. Note that, although not shown, an execution subject of a collation program described later is a control unit configured by a microcomputer as a subject that performs a control operation in the receiving device 7. The power supply control circuit 27 converts the output of the on-vehicle battery 28 to a predetermined control power supply voltage when a signal is supplied to the control input terminal, and feeds the power to each circuit unit. Connected to output terminal.

The output terminal of the receiving circuit 8 is connected to a code decoding circuit 30 via a waveform shaping circuit 29.
An output terminal of the waveform shaping circuit 29 is also connected to a clock circuit 32 via a synchronization circuit 31, and an output terminal of the clock circuit 32 is connected to a clock input terminal of the code decoding circuit 30. The reception signal output from the reception circuit 8 is subjected to waveform shaping by a waveform shaping circuit 29 and then supplied to a code decoding circuit 30 and a synchronization circuit 31. The code decoding circuit 30 is configured based on a clock signal supplied from a clock circuit 32. Thus, the signal supplied from the waveform shaping circuit 29 is decoded into a digital transmission code signal and output.

The reception code shift register 33 includes an increment code shift register 33a and an ID code shift register 33b. The input terminal of the increment code shift register 33a is connected to the output terminal of the code decoding circuit 30. The output terminal of the increment code shift register 33a is connected to an increment code matching circuit 34 as a matching means and an auxiliary matching means, and the output terminal of the ID code shift register 33b is connected to an ID code matching circuit 35. The increment code collating circuit 34 has the ID
It is connected to the code collation circuit 35,
The data is output to the code collation circuit 35.

In the reception code shift register 33, when a reception code signal is given from the code decoding circuit 30, the increment code shift register 33
a outputs the increment code C to the increment code matching circuit 34, and outputs the ID code shift register 33b
Outputs an ID code to the ID code collation circuit 35.

The above-mentioned EEPROM 14 has a main increment code C1 as a collation count code and a sub-increment code C2 as an auxiliary count code.
Is rewritably stored, and is connected to the increment code collating circuit 34. The ROM 36 stores an ID unique to the vehicle set as the same value as the radio key 1 side.
The ID code matching circuit 35 stores a code.
It is connected to the. The aforementioned door lock control circuit 13a
Is connected to an ID code matching circuit 35, and when the matching results of the increment code matching circuit 34 and the ID code matching circuit 35 match, a control signal is provided as a match signal.

Next, the operation of the present embodiment will be described with reference to the flowchart of FIG. 4 and FIG. 5, and the operation of the radio key 1 will be briefly described. The description will be given separately for each case described below.

First, the operation of the radio key 1 will be briefly described. When the lock switch 4 or the unlock switch 5 of the radio key 1 is operated, the switch circuit 15 outputs a control signal corresponding to the operation to each unit to start the operation. In the transmission code shift register 18, the increment code shift register 18 a reads the increment code C and the operation code corresponding to any of the operation switches 4 and 5 from the EEPROM 20 based on the clock signal supplied from the clock circuit 17. Sequential ID code shift register 1
8b and output.

The ID code shift register 18b similarly reads the ID code from the ROM 21 and outputs the ID code to the code conversion circuit 22. The increment code C and the operation code are output from the ID code shift register 18b to the code conversion circuit 22 following the ID code, whereby a transmission code signal is output. Also, at this time, the EEPROM 20 updates and stores a new increment code C by adding “1” as an additional value to the value of the increment code C stored up to that time by a signal given from the switch circuit 15. ing.

The modulation circuit 23 outputs a signal obtained by digitally modulating a carrier wave supplied from the oscillation circuit 19 with a transmission code signal supplied from the code conversion circuit 22 as a transmission signal from the antenna 25 via the output circuit 24. As a result, the transmission code signal is transmitted from the antenna 25 as a radio signal.

Next, the operation of the receiver 7 when the radio key 1 is operated as described above will be described. A receiving circuit 8 receives a radio signal from the radio key 1 via an antenna 9
Received by the power supply control circuit 27.
8, the control power supply voltage is supplied to each unit. Further, the received radio signal is decoded as a transmission code signal based on a clock signal of a clock circuit 32 via a waveform shaping circuit 29 and a code decoding circuit 30, and the transmission code signal is input to a reception code shift register 33. Become like

In the reception code shift register 33, the increment code C is output to the increment code matching circuit 34 by the increment code shift register 33a, and the ID code is output to the ID code matching circuit 35 by the ID code shift register 33b. . Then, the increment code matching circuit 34 receives the increment code C based on the values of the main increment code C1 and the sub increment code C2 stored in the EEPROM 14.
Is collated as described later. Also,
The ID code matching circuit 35 matches the ID code value stored in the ROM 36 with the received ID code.

When a match signal is output in any of the collation results, a control signal corresponding to a corresponding operation of the lock operation or the unlock operation is output to the door lock control circuit 13a. The door lock control circuit 13a operates the door lock mechanism 1 in response to the control signal.
3 is driven to perform a locking or unlocking operation.

Now, in the following, in the above-described collation operation in the increment code collation circuit 34, the main memory storing the value of the increment code C of the transmission code signal transmitted from the radio key 1 in the receiving device 7 is described. The following five cases will be described according to the difference between the values of the increment code C1 and the subincrement code C2.

That is, (A) the radio key 1 and the receiving device 7
(B) when the increment code C and the main increment code C1 are in synchronization with each other.
The value of the increment code C is larger than the sub-increment code C2 and the first allowable range N1 (for example, “10
0 "), (C) when the increment code C is synchronized with the sub-increment code C2, and (D) when the value of the increment code C is in the second allowable range N2 (for example," 1000 "). ), But does not satisfy the above conditions (A) to (C), and
(E) When the value of the increment code C is (A)
There are five cases when none of the conditions of (D) is satisfied.

The receiving device 7 determines whether or not the increment code C satisfies the condition under the condition that the ID codes of the received transmission code signals match. For the five cases (A) to (E), the determination program shown in FIG. 4 is executed to operate according to each case.

(A) When the Radio Key 1 and the Receiving Device 7 are in Synchronization The receiving device 7 sets the value of the received increment code C to the main increment code C1 stored in the EEPROM 14, It is determined whether or not it is equal to “C1 + 1” which is the value after adding “1” as an addition value (step S1). If “YES”, the main increment code C1 and the sub increment code C are determined.
2 is rewritten to the value of the increment code C just received and updated and stored (step S2).
2) Then, a match signal indicating that the increment codes C match is output (step S3), and the process ends.

Thus, when the increment code C transmitted from the radio key 1 is synchronized with the main increment code C1 for comparison stored in the receiving device 7, a coincidence signal is output immediately. At the same time, the increment code C received at that time is stored as a new main increment code C1, so that the same operation as described above is performed even when an increment code obtained by adding the addition value “1” from the radio key 1 is transmitted next time. Steps S1 to S3 are performed to output a coincidence signal.

(B) The value of the increment code C is larger than the sub-increment code C2 and the first allowable range N1
As described above, in the synchronous state, the main increment code C1 and the sub-increment code C2 are equally updated and stored, so that the fact that the value of the received increment code C does not match the main increment code C1 means that the sub-increment It will not match the code C2 either.

In this case, when the value of the received increment code C does not match the value (C1 + 1) obtained by adding “1” to the main increment code C1 (step S1), the receiving device 7 sets the value of the increment code C to zero. The value is larger than the value of the main increment code C1 (step S4), and the second allowable range N2 (for example, N
2 = 1000) (step S5), the process proceeds to step S6.

In step S6, the receiving device 7 determines whether or not the value of the increment code C is equal to the value (C2 + 1) obtained by adding the added value "1" to the sub-increment code C2. Since the sub-increment code C2 is equal to the value of the main increment code C1 as shown in (A), "NO" is determined, and the process proceeds to step S7. Here, the receiving device 7 determines that the value of the increment code C is larger than the value of the sub-increment code C2 and the first allowable range N1
(For example, N1 = 100) (Step S
8), the process proceeds to step S9.

In step S9, the receiving device 7 updates and stores the value of the main increment code C1 to a value obtained by adding the added value "1", and
2 is updated to the value of the received increment code C, and a coincidence signal is output (step S1).
0).

Accordingly, for example, even if the value of the increment code C is updated and set while the transmission radio wave of the radio key 1 is not received by the receiver 7, the value of the increment code C is received last time. When the value is larger than the value and within the first allowable range N1, that is, the value of the difference is relatively small, the coincidence signal can be output while permitting the difference. Can be improved.

(C) When the increment code C and the sub-increment code C2 are in a synchronized state As described above, when the main increment code C1 and the sub-increment code C2 are set to different values, The received increment code C may be synchronized with the value of the sub increment code C2. This is the case where the increment code C is transmitted continuously in the state of (B) above, and operates as follows.

That is, the receiving device 7 performs steps S1,
In step S6 after steps S4 and S5, the value of the received increment code C is a value obtained by adding the added value "1" to the value of the previously set sub-increment code C2 (C2
+1), the determination is "YES" here, and the routine proceeds to step S11. The receiving device 7
The value of the received increment code C is updated and stored as a new main increment code C1 and sub-increment code C2, and thereafter, a coincidence signal is output (step S12).

As a result, when there is a history of outputting the coincidence signal on the condition that the increment code C is within the first allowable range N1 in the previous reception as shown in FIG. When (= the previous increment code C + 1) is received, verification is performed using the sub-increment code C2, and if the results match, both the main increment code C1 and the sub-increment code C2 are updated to the received increment code C. Radio key 1
It can be synchronized again with the increment code C on the side.

In the above case, the value of the received increment code C is again changed to the sub-increment code C2.
Is larger than the value obtained by adding the additional value "1" to
(Step S7) includes a case where the value of the increment code C is within the first allowable range N1 from the sub-increment code C2 as in the case of (B) described above.
A match signal is output in (steps S8 to S10) .

(D) If the value of the increment code C is the second
Is within the allowable range N2, but does not satisfy the conditions of (A) to (C). In this case, the synchronization state is such that the value of the increment code C is less than the sub-increment code C2 or deviates from the first allowable range. May be shifted. In this case, the receiving device 7 has a condition that the value of the received increment code C is larger than the value of the main increment code C1 and is in a second allowable range N2, for example, a range of “1000” ( Steps S4 and S
5) Subsequently, when it is determined that the value of the increment code C is equal to or smaller than the sub-increment code C2 or exceeds the first allowable range (steps S7 and S8), the process proceeds to step S13.

Now, in such a case, the receiving device 7
A coincidence signal is output by receiving successive increment codes C during the elapse of a predetermined time. That is, the receiving device 7 increments the increment code C received in step S14 through step S13.
Is temporarily stored in the internal RAM as a provisional count code C3, a three-second timer is started (step S15), and a mismatch is determined (step S16), and the program is temporarily terminated.

Then, only when the value of the increment code C received again before the elapse of 3 seconds matches the value obtained by adding the added value "1" to the temporary count code C3 stored in the RAM. (Step S17), receiving device 7
Outputs a coincidence signal and updates and stores the value of the increment code C received at that time as a new main increment code C1 and sub increment code C2 (steps S18, S19).

As a result, even if the value of the increment code C of the radio key 1 is greatly deviated, the value is larger than the main increment code C1 and is equal to the second allowable range N2.
It is possible to output a coincidence signal under certain conditions when the radio key 1 is within the range, and in the subsequent reception operation, the synchronization state is restored. Is also gone.

(E) When the value of the increment code C does not satisfy any of the above conditions (A) to (D). In this case, the receiving device 7 determines that an incorrect increment code C has been received. Steps S1 to S4
The process proceeds to step S20 via step S5 or after step S5, and a mismatch state of the increment code C is determined. In this case, no match signal is output.

According to the present embodiment, even when the increment code C that should be received in the synchronized state with the radio key 1 is not received by the increment code collating circuit 34, the main increment code C1 and the sub increment code Since the coincidence signal can be output in the case of (B) or (C) by setting the code C2, it is troublesome to repeat the operation of the radio key 1 when the synchronization state is shifted. The operation becomes unnecessary, and the usability of the user can be improved under predetermined conditions while eliminating the operation by the increment code C that is out of the condition.

Further, according to the present embodiment, when the coincidence signal is not output in the above cases (B) and (C), the value of the received increment code C is replaced by the main increment code C1. The second allowable range N2 (eg, N2 = 1
000), the matching signal is output only when a continuous increment code C is received within 3 seconds, so that only the user who knows how to continuously transmit is compatible. Therefore, the unlock operation of the door lock mechanism 13 due to an incorrect increment code can be prevented while improving the operability.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The radio key 1 may be configured as a dedicated transmitting device without the key plate 2. The radio key 1 may be configured such that the lock switch and the unlock switch are one operation switch, and the lock and the unlock are alternately operated on the receiving device 7 side. The added value may be set to “2” or more, instead of “1”, and added.

[Brief description of the drawings]

FIG. 1 is an electric configuration diagram of a radio key according to an embodiment of the present invention.

FIG. 2 is an overall block configuration diagram

FIG. 3 is an electrical configuration diagram of a receiving device.

FIG. 4 is a flowchart illustrating an operation when a transmission code is output.

FIG. 5 is an operation explanatory view showing a collation condition of a value of a received increment code C;

[Explanation of symbols]

1 is a radio key, 4 is a lock switch, 5 is an unlock switch, 6 is a transmitting circuit, 7 is a receiving device (temporary count code storage means), 8 is a receiving circuit, 9 is an antenna, 13 is a door lock mechanism, and 13a is Door lock control circuit (control means),
14 is an EEPROM (storage means), 15 is a switch circuit, 16 is a battery, 17 is a clock circuit, 18 is a transmission code shift register, 18a is an increment code shift register, 18b is an ID code shift register, 19
Is an oscillation circuit, 20 is an EEPROM, 21 is a ROM, 22
Is a code conversion circuit, 26 is a switch determination circuit, 27 is a power control circuit, 28 is a battery, 30 is a code decoding circuit,
32 is a clock circuit, 33 is a reception code shift register, 33a is an increment code shift register, 3
3b is an ID code shift register, 34 is an increment code collating circuit (collating means, auxiliary collating means, updating means, temporary collating means), 35 is an ID code collating circuit, and 36 is a ROM.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takashi Mizuno 1st character Noda, Toyota, Oguchi-machi, Oguchi-machi, Niwa-gun, Aichi Prefecture Inside Tokai Rika Electric Works, Ltd. No. 1 No. 1 Tokai Rika Electric Works, Ltd. (56) References JP-A-7-42428 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 65/12-65 / 42 E05B 49/00

Claims (3)

(57) [Claims] A transmitting device for transmitting, as an aerial propagation signal, a transmission code signal including a transmission counting code in which an addition value is sequentially added for each operation of an operation switch; When a value of the transmission counting code included in the transmission code signal is received by the verification unit and the value of the added value is added to the verification counting code stored in the storage unit, the matching signal is output by the verification unit. Output, and updates the transmission count code received in response to the output of the coincidence signal by the update means in the storage means as a new collation count code, and controls the operation at that time in accordance with the output of the coincidence signal by the control means. A receiving device configured to output a drive signal of the vehicle load corresponding to a code, wherein the remote control device for a vehicle load is provided in the receiving device, When the coincidence signal is not output as a result of the collation by the collation means, the value of the received transmission count code is larger than the value of the collation count code and falls within a first allowable range. The coincidence signal is output when
Is added to the value of the collation counting code stored in
Adds the value, updates and stores, and the transmission received at that time
Storage means using the value of the counting code for
In the subsequent collation operation.
The counting code corresponds to the auxiliary counting code stored in the storage means.
A remote control device for a vehicle load, comprising: an auxiliary matching unit that outputs the match signal even when the value matches the value obtained by adding the added value . 2. The apparatus according to claim 1, wherein said auxiliary collating means comprises :
The value of the number code is greater than the value of the auxiliary counting code.
The vehicle load remote control device according to claim 1 , wherein the coincidence signal is output when the distance is smaller than the first allowable range . 3. The method according to claim 1, wherein the value of the received transmission counting code is the
Larger than the combined counting code and within the second allowable range
And the match signal is output by the auxiliary matching means.
When there is no transmission count code at that time, the temporary count code
Temporary code storage means for temporarily storing as the temporary count code, and the value of the transmission count code received within an allowable time is stored in the temporary count code.
The above addition to the provisional count code stored in the count code storage means
Outputs the match signal when the value matches the value obtained by adding the values.
2. A temporary collating means comprising:
3. The remote control device for a vehicle load according to claim 2 .