Apparatus for remotely controlling device for mobile body

• US 6,816,081 B1
• Filed: 01/19/1999
• Issued: 11/09/2004
• Est. Priority Date: 05/16/1997
• Status: Expired due to Term

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Okada, Hiroki, Sugiura, Misako
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): BROWN, VERNAL U
• Application Number:
  US09/230,028
• Time in Patent Office: 2,121 Days
• Field of Search: 340/5.6, 340/5.61, 340/5.72, 340/5.63, 340/5.21, 340/5.27, 340/5.51, 340/5.62, 340/825, 340/825.72, 340/825.69, 340/5.64
• US Class Current: 370/462
• CPC Class Codes: G07C 2009/00206 the keyless data carrier being hand operated
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2209/04 Access control involving a hierarchy in access rights
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

A transmitter 16, receiver 20 and control circuit 10are provided on a mobile unit, and a response circuit 26, 28, 30 and a control circuit 32, 34, 30 are provided on a portable unit. Priorities are assigned to the transmission of a recognition signal by the response circuit and the transmission of a recognition signal by the operation circuit, and by so doing the transmission from the operation circuit is given priority and performed first if both transmissions are requested simultaneously.

Claims

1. A mobile unit remote control apparatus, comprising:

a transmitter for transmitting transmission request signals mounted on the mobile unit;

a receiver, mounted on the mobile unit, for receiving recognition signals transmitted from a portable unit;

an instrument control circuit, mounted on the mobile unit, for controlling instruments installed on the mobile unit in response to a recognition signal received by the receiver;

a response circuit, mounted on said portable unit, for transmitting a recognition signal in response to a transmission request signal transmitted from said transmitter; and

an operation circuit, mounted on the portable unit, for transmitting a recognition signal in response to operating input from an external source, unrelated to the transmission request signal,

wherein priority rankings are assigned to the transmission of the recognition signal by said response circuit and the transmission of the recognition signal by said operation circuit, and

wherein said receiver mounted on said mobile unit is started before said transmitter is started, and

when the receiver receives the recognition signal of the operation circuit, the transmitter is prohibited from transmitting said transmission request signals.

2. The mobile unit remote control apparatus according to claim 1, wherein a bit arrangement is performed when the receiver has received the recognition signal.

3. A mobile unit remote control apparatus comprising:

a transmitter for transmitting transmission request signals mounted on the mobile unit;

a receiver mounted on the mobile unit for receiving recognition signals transmitted from a portable unit;

an instrument control circuit mounted on the mobile unit for controlling instruments installed on the mobile unit in response to a recognition signal received by the receiver;

a response circuit mounted on said portable unit for transmitting the recognition signal in response to a transmission request signal transmitted from said transmitter; and

a halting means provided on said portable unit for halting the transmission of the recognition signal after a pre determined period of time has passed when a trigger signal indicating the reception of the transmission request signal has been continuously generated, the transmission of the recognition signal being performed based on the generation of the trigger signal.

4. A mobile unit remote control apparatus comprising:

a transmitter for transmitting transmission request signals mounted on a mobile unit;

a receiver mounted on the mobile unit for receiving recognition signals transmitted from a portable unit;

an instrument control circuit mounted on the mobile unit for controlling instruments installed on the mobile unit in response to a recognition signal received by the receiver;

a response circuit mounted on the portable unit for transmitting a recognition signal in response to a transmission request signal transmitted from the transmitter, the response circuit including a detector detecting the transmission request signal received by said response circuit;

an operation circuit mounted on the portable unit for transmitting the recognition signal in response to operating input from an external source, unrelated to said transmission request signal; and

a first power supply for supplying power only to said response circuit, and a second power supply for supplying power only to said operation circuit.

5. A mobile unit remote control apparatus comprising:

a transmitter, mounted on a mobile unit, for transmitting transmission request signals;

a receiver mounted on the mobile unit for receiving recognition signals transmitted from a portable unit;

an instrument control circuit mounted on the mobile unit for controlling instruments installed on the mobile unit in response to a recognition signal received by the receiver;

a response circuit mounted on said portable unit for transmitting a recognition signal in response to a transmission request signal transmitted from said transmitter, the response circuit including a detector detecting the transmission request signal received by said response circuit;

an operation circuit mounted on the portable unit for transmitting a recognition signal in response to operating input from an external source, unrelated to the transmission request signal; and

a common power supply for supplying power to said response circuit and said operation circuit, and power supply interrupting means for interrupting the supply of power to said detector of said response circuit, wherein the interrupting means supplies power to said operation circuit.

6. The mobile unit remote control apparatus as claimed in claim 5, wherein said power supply interrupting means comprises a switch provided between said common power supply and said response circuit, wherein the switch stops power supply to said response circuit and supplies power to said operation circuit when contacts of the switch are open.

7. The mobile unit remote control apparatus as claimed in claim 5, wherein said power supply interrupting means comprises a breaker circuit that interrupts the supply of power to said response circuit when the current capacity of the common power supply falls short of a predetermined value, wherein the break circuit stops power supply to said response circuit and supplies power to said operation circuit.

8. The mobile unit remote control apparatus as claimed in claim 5, wherein said power supply interrupting means comprises a breaker circuit that interrupts the supply of power to said response circuit when the recognition signal from said portable unit is not transmitted for a predetermined period of time, wherein the break circuit stops power supply to said response circuit and supplies power to said operation circuit.