JP2009278506A - Receiving apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive receiving apparatus capable of easily performing pairing with a transmitting apparatus as to a receiving apparatus mainly used for locking and unlocking a door of an automobile. <P>SOLUTION: A provisional code D is set in a storage means 12 and a control means 13 rewrites the provisional code D and stores a rolling code from the transmitting apparatus 6 in the provisional code D. Thereby even if the transmitting apparatus 6 is erroneously operated beyond a prescribed number of times while manufacturing or carrying the transmitting apparatus 6, pairing with the transmitting apparatus 6 can be easily performed and the inexpensive receiving apparatus 14 can be obtained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a receiving apparatus that is mainly mounted on an automobile and used for remote operation such as door locking and unlocking.

  In recent years, in addition to directly operating the doors and locks of vehicle doors with mechanical keys, remote operation from remote locations has been widely performed by a transmitter carried by the driver, and there is no mistake in operation. What can be operated easily is required.

  Such a conventional receiving apparatus will be described with reference to FIG.

  FIG. 5 is a block circuit diagram of a conventional receiver. In FIG. 5, reference numeral 1 denotes an antenna, 2 denotes storage means such as an IC, 3 denotes control means such as a microcomputer, and the control means 3 includes an antenna 1 and storage means 2. Are electrically connected to each other to form the receiving device 4.

  Such a receiving device 4 is attached to a predetermined location of the automobile, and the control means 3 is electrically connected to a vehicle drive means 5 formed of a motor, a solenoid or the like by a connector, a lead wire (not shown) or the like. Connected to.

  Further, reference numeral 6 denotes a portable transmission device. In a case 6A made of an insulating resin from which a plurality of push buttons 6B protrude from the upper surface, an identification that differs depending on a transmission means or a transmission device depending on a housed antenna, switch, microcomputer, or the like. A storage means (not shown) in which codes, drive codes, and the like are registered is formed.

  In the above configuration, when the push button 6B of the pair of transmission devices 6 is pressed in the vicinity of the reception device 4, the identification code A1 unique to each reception device 4 and the transmission device 6 and the number of operations of the push buttons 6B are obtained. A rolling code B1 or the like is transmitted from the transmission device 6 as a radio wave signal.

  Then, the antenna 1 receives this radio wave signal, and the control means 3 confirms whether or not the unique identification code A1 stored in the storage means 2 in advance matches the received identification code A1. The rolling code B1 is stored in the blank area C of the storage means 2 and the codes of the transmission device 6 and the reception device 4 are adapted so that the pair of transmission devices 6 and the reception device 4 can be remotely operated. A ring is made.

  In other words, during the production of each vehicle, the identification code A1 and the rolling code B1 are transmitted from the predetermined transmission device 6 to the reception device 4 as described above, and the reception device 4 receives and stores the identification code A1. At a later remote operation, it is determined whether or not the radio signal received by the receiving device 4 is compatible from the paired transmitting device 6, and the control means 3 turns the driving means 5 only if it matches. It is configured to be driven to perform remote operations such as door locking and unlocking.

  Note that the rolling code B1 of the radio wave signal transmitted from the transmission device 6 changes sequentially depending on the number of operations of the push button 6B of the transmission device 6, and therefore the rolling code B1 of count 1 is transmitted at the first operation. However, a rolling code whose count number is sequentially increased according to the number of operations is transmitted, such as count 2 at the second operation and count 3 at the third operation.

  Therefore, if the push button 6B is accidentally pressed several times in a place where the radio signal does not reach away from the receiving device 4 when the transmitting device 6 is manufactured or transported, When pairing is performed, a rolling code such as count 5 and count 10 is transmitted from the transmission device 6 to the reception device 4 instead of the rolling code B1 of count 1.

  Therefore, up to a predetermined number of times, for example, around several tens of times, when the control means 3 of the receiving device 4 matches the unique identification code A1, the rolling code of the count is stored in the blank area C of the storage means 2. However, since there is a limit to the storage capacity of the blank area C, the transmitter 6 in which the push button 6B is operated more than a predetermined number of times is separately subjected to a rolling code by disassembly or the like. It was necessary to perform the resetting work.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2002-320286 A

  However, in the above conventional receiving apparatus, even when the push button 6B is accidentally pressed more than a predetermined number of times when the transmitting apparatus 6 is operated or transported, the pairing with the receiving apparatus 4 can be performed. Requires a large storage capacity of the blank area C of the storage means 2 of the receiving device 4 or separately performs a resetting operation of the rolling code, which is troublesome to manufacture and becomes expensive. There was a problem of ending up.

  The present invention solves such a conventional problem, and an object of the present invention is to provide an inexpensive receiving device that can be easily paired with a transmitting device.

  In order to achieve the above object, the present invention is such that a provisional code is provided in the storage means, and the control means is configured to store the rolling code from the transmission apparatus in the provisional code, and the control means By rewriting the provisional code of the storage means and storing the rolling code here, even if the transmitter is accidentally operated more than a predetermined number of times, such as when the transmitter is manufactured or transported, Pairing can be easily performed, and an inexpensive receiving device can be obtained.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that a pairing with a transmission device is easy and an inexpensive reception device can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
FIG. 1 is a block circuit diagram of a receiving apparatus according to an embodiment of the present invention. In FIG. 1, 1 is an antenna, 12 is a storage means such as an IC, 13 is a control means such as a microcomputer, and the control means 13 includes The antenna 1 and the storage means 12 are electrically connected.

  In addition, as shown in the waveform diagrams of FIG. 1 and FIG. 3A, the storage unit 12 stores a unique identification code A1 of around 24 bits and a provisional code D of around 16 bits in advance, and the receiving device 14 is configured.

  Such a receiving device 14 is attached to a predetermined portion of the automobile, and the control means 13 is electrically connected to the vehicle drive means 5 formed of a motor, a solenoid or the like by a connector, a lead wire (not shown) or the like. Connected to.

  Further, reference numeral 6 denotes a portable transmission device. In a case 6A made of an insulating resin from which a plurality of push buttons 6B protrude from the upper surface, an identification that differs depending on a transmission means or a transmission device depending on a housed antenna, switch, microcomputer, or the like. A storage means (not shown) in which codes, drive codes, and the like are registered is formed.

  In the above configuration, when the push button 6B of the pair of transmitting devices 6 is pressed near the receiving device 14, as shown in the waveform diagram of FIG. A unique identification code A1, a rolling code B1 indicating the number of operations of the push button 6B, and the like are transmitted from the transmission device 6 as radio wave signals.

  Then, the antenna 1 receives this radio signal, and the control means 13 confirms whether or not the unique identification code A1 stored in advance in the storage means 12 and the received identification code A1 match. 3 (b), the provisional code D in the storage means 12 is rewritten, the received rolling code B1 is stored therein, and the codes of the transmission device 6 and the reception device 14 are matched, thereby a pair of transmission devices. 6 and the receiver 14 can be remotely operated, so-called pairing is performed.

  That is, during the manufacture of each vehicle, the identification code A1 and the rolling code B1 are transmitted from the predetermined transmission device 6 to the reception device 14 as described above, and the reception device 14 receives and stores the identification code A1. At a later remote operation, it is determined whether or not the radio wave signal received by the receiving device 14 is an appropriate one from the paired transmitting device 6, and the control means 13 is driven by the driving means 5 only if it is suitable. Is operated so that remote operation such as locking and unlocking of the door is performed.

  Note that the rolling code B1 of the radio signal transmitted from the transmission device 6 changes sequentially depending on the number of operations of the push button 6B of the transmission device 6, and therefore, when the first operation is performed, the rolling code of count 1 is used as described above. B1 is transmitted, but the transmitting device 6 transmits a rolling code whose count number is sequentially increased according to the number of operations, such as count 2 at the second operation and count 3 at the third operation.

  Therefore, if the push button 6B is accidentally pressed several times before pairing with the receiving device 14, the pairing is not performed with the rolling code B1 of count 1, for example, twice. When the operation has been performed, the rolling code B2 with a count of 2 as shown in FIG. 2B, and when the operation has been performed three times, the count of 3 with a count of 3 as shown in FIG. 2C. A rolling code whose count number is sequentially increased according to the number of operations, such as a rolling code B3, is transmitted.

  However, in the present invention, even when these rolling codes B2 and B3 are received, the control means 13 rewrites the provisional code D in the storage means 12 as shown in FIGS. 3 (c) and 3 (d). The received rolling codes B2 and B3 are stored here, and each pair of codes is adapted to perform pairing between the pair of transmission device 6 and reception device 14.

  Further, an erroneous operation is performed 10 times and 50 times, and as shown in FIG. 2D and FIG. 2E, the rolling code B10 with count 10 and the rolling code B50 with count 50 are transmitted from the transmission device 6. Also in this case, as shown in FIGS. 3E and 3F, the control means 13 rewrites the provisional code D in the storage means 12, and stores the received rolling codes B10 and B50 here.

  In other words, the push button 6B is accidentally pressed several times in a place where the radio signal does not reach the receiver 14 when the transmitter 6 is manufactured or transported before pairing with the receiver 14 is performed. Even when rolling code B2, B3, B10, B50, etc. are transmitted from the transmission device 6 during pairing, the control means 13 uses the provisional code D stored in advance in the storage means 12 and the rolling code In other words, pairing with the transmission device 6 is performed.

  That is, the provisional code D is provided in the storage unit 12, and at the time of pairing, the control unit 13 rewrites the provisional code D and stores the rolling code from the transmission device 6 so that the transmission device 6 is manufactured or transported. For example, even when the transmission device 6 is mistakenly operated more than a predetermined number of times, pairing with the transmission device 6 can be reliably performed.

  The relationship between the number of bits of the provisional code D and the number of counts is a count number of (2 to the power of X-1) with respect to the number of bits X. For example, the count is 15 for 4 bits, and the count is 255 for 8 bits. In addition, the larger the number of bits of the provisional code D, the larger the storage capacity, and the number of rolling codes that can be stored increases.

  Therefore, as the number of bits is increased, the rolling code can be stored no matter how many times the transmission device 6 is erroneously operated, but it is possible to count over 60,000 times with 16 bits and over 1 million times with 20 bits. For this reason, if this number of bits is normally set, a sufficient storage capacity for the rolling code of the provisional code D can be obtained.

  In other words, the provisional code D of around 16 to 20 bits does not require an extremely large storage capacity, and also eliminates the need for resetting the rolling code by disassembling or the like. Be able to.

  In the above description, the radio wave signal transmitted from the transmission device 6 and received by the reception device 14 has been mainly described with reference to the identification code A1 and the rolling codes B1 to B50. When performing remote operation, as shown in the waveform diagram of FIG. 4, before and after an identification code A1 of around 24 bits and a rolling code B50 of around 16 bits, an activation code E1 of around 190 bits and a drive of around 4 bits. What added code | cord | chord F1 is used.

  When the receiving device 14 receives the radio signal, the receiving device 14 is first activated from the intermittent operation state to the continuous operation state by the activation code E1, and then received by the identification code A1 and the rolling code B50. After determining that the radio wave signal is suitable from the paired transmission device 6, a drive signal corresponding to the drive code F1 is output to the drive means 5, and remote control such as door locking and unlocking is performed. The operation is configured to be performed.

  As described above, according to the present embodiment, the provisional code D is provided in the storage unit 12, and the control unit 13 rewrites the provisional code D and stores the rolling code from the transmission device 6 therein, thereby transmitting the transmission device. Even when the transmission device 6 is mistakenly operated more than a predetermined number of times during manufacture or transportation of the device 6, pairing with the transmission device 6 can be easily performed, and an inexpensive reception device 14 is obtained. It is something that can be done.

  In the above description, a so-called keyless system in which a radio signal is transmitted from the transmission device 6 carried by the driver to the reception device 14 of the vehicle has been described. However, both the transmission device and the reception device have transmission means and reception means. The present invention can also be implemented in a so-called smart entry system in which a transmission device and a reception device communicate with each other.

  The receiving device according to the present invention can be easily paired with the transmitting device and is inexpensive, and is mainly useful for operations such as locking / unlocking a door of an automobile.

1 is a block circuit diagram of a receiving apparatus according to an embodiment of the present invention. Waveform diagram Waveform diagram Waveform diagram Block circuit diagram of conventional receiver

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna 5 Drive means 6 Transmitter 6A Case 6B Push button 12 Memory | storage means 13 Control means 14 Receiver A1 Identification code B1, B2, B3, B10, B50 Rolling code D Temporary code E1 Startup code F1 Drive code

Claims (1)

It comprises an antenna for receiving a radio signal from a transmitting device, a storage means for storing an identification code and a rolling code of the radio signal, and a control means connected to the antenna and the storage means. A temporary code is stored in the storage means. And a receiving device in which the control means stores the rolling code in the provisional code.

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