Receiving apparatus

• US 6,624,740 B2
• Filed: 11/29/1999
• Issued: 09/23/2003
• Est. Priority Date: 08/09/1989
• Status: Expired due to Fees

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Nose, Shinji, Enoki, Masahiko
• Primary Examiner(s): Holloway, III, Edwin C.
• Application Number:
  US09/447,947
• Publication Number:
  US 20020125989A1
• Time in Patent Office: 1,394 Days
• Field of Search: 340/5.2, 340/5.23, 340/5.28, 340/5.3, 340/5.31, 340/5.32, 340/5.62, 340/5.64, 340/5.72, 340/426, 340/825.69, 340/825.22, 340/825.72, 341/176, 180/287, 361/172, 307/10.2, 307/10.5
• US Class Current: 340/5.2
• CPC Class Codes: G07C 2009/00261 the keyless data carrier having more than one function
• CPC Class Codes: G07C 2009/00293 anti-theft
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2009/00849 programming by learning
• CPC Class Codes: G07C 2209/06 Involving synchronization or resynchronization between transmitter and receiver; reordering of codes
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks

Abstract

An apparatus remotely controls, for example, door locking/unlocking and alarm activation of an automobile. A transmitting device transmits communication data, which includes synchronization data and identification data. The communication data is received by the control apparatus in which the identification data included in the received communication data is compared with already stored data. The locking and unlocking of the doors of the vehicle is carried out when the identification data matches the already stored data. A continuous reception condition is detected when the communication data is received for more than a predetermined period of time. When the continuous reception condition is detected, an alarm is actuated. As such, a common transmitting button of the transmitting device can be used to effect both control of the locking and unlocking of doors and alarm activation. The control apparatus may also include an erasable memory which is remotely settable in a writable status and in which identification data can be erased by remote control while in the writable status.

Claims

1. A remote control security system for use with an automotive vehicle, said remote control security system comprising:

a transmitting apparatus for transmitting identification data; and

a receiving apparatus to be mounted in the vehicle, the receiving apparatus comprising a memory, a setting means, a control means, a writing means, an erasing means and a writable mode ending means,

wherein the memory is capable of having identification data written thereto and read therefrom,

wherein the setting means is capable of setting a control mode to a mode selected from a normal control mode and a writable mode for enabling writing of identification data into the memory,

wherein the control means is capable of, when the control mode is set to the normal control mode, comparing the identification data transmitted from the transmitting apparatus with the identification data stored in the memory and controlling respective parts of the vehicle when the identification data transmitted from the transmitting apparatus matches the identification data stored in the memory,

wherein the writing means is capable of, when the control mode is set to the writable mode and the identification data is received from the transmitting apparatus within a predetermined time, writing the identification data transmitted from the transmitting apparatus in the memory, and before the predetermined time has elapsed, ending the writable mode and changing the control mode form the writable mode to the normal control mode,

wherein the erasing means is capable of, when the control mode is set to the writable mode and an erasing instruction is received within the predetermined time, erasing all of the identification data stored in the memory so that the respective parts of the vehicle can not be controlled by any transmitting apparatuses, and before the predetermined time has elapsed, ending the writable mode and changing the control mode from the writable mode to the normal control mode, and

wherein the writable mode ending means is capable of, when the control mode is set to the writable mode and the erasing instruction and the identification data are not received within the predetermined time, ending the writable mode and changing the control mode from the writable mode to the normal control mode after the predetermined time has elapsed.

2. A remote control security system for use with an automotive vehicle, said remote control security system comprising:

a transmitting apparatus for transmitting identification data; and

a receiving apparatus to be mounted in the vehicle, the receiving apparatus comprising a memory, a setting means, a control means, an erasing means and an erasable mode ending means,

wherein the memory is capable of having identification data read therefrom and erased therefrom;

wherein the setting means is capable of setting a control mode to a mode selected from a normal control mode and a erasable mode for enabling erasing of identification data stored in the memory;

wherein the control means is capable of, when the control mode is set to the normal control mode, comparing the identification data transmitted from the transmitting apparatus with the identification data stored in the memory and controlling respective parts of the vehicle when the identification data transmitted from the transmitting apparatus matches the identification data stored in the memory;

wherein the erasing means is capable of, when the control mode is set to the erasable mode and an erasing instruction is received within a predetermined time, erasing all of the identification data stored in the memory without rewriting in new identification data; and

wherein the erasable mode ending means is capable of, when the control mode is set to the erasable mode and the erasing instruction is not received within the predetermined time, ending the erasable mode and changing the control mode from the erasable mode to the normal control mode after the predetermined time has elapsed.