Remote transmitter-receiver controller for multiple systems

• US 5,841,390 A
• Filed: 03/24/1997
• Issued: 11/24/1998
• Est. Priority Date: 07/05/1994
• Status: Expired due to Term

• Current Assignee: Tsui, Philip Y. W.
• Original Assignee: Tsui, Philip Y. W.
• Inventors: Tsui, Philip Y. W.
• Primary Examiner(s): Hofsass, Jeffery A.
• Assistant Examiner(s): MANNAVA, ASHOK K
• Application Number:
  US08/823,789
• Time in Patent Office: 610 Days
• Field of Search: 341/173, 341/176, 340/825.69, 340/825.72, 340/825.73, 340/825.31, 340/825.32, 455/93, 455/102
• US Class Current: 341/173
• CPC Class Codes: E05F 15/77 using wireless control
• CPC Class Codes: E05Y 2400/664 by radio waves
• CPC Class Codes: E05Y 2900/106 for garages
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2009/00833 by code input from switches
• CPC Class Codes: G07C 2209/61 Signal comprising different frequencies, e.g. frequency hopping
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00857 where the code of the data carrier can be programmed
• CPC Class Codes: G08C 19/14 using combination of fixed frequencies
• CPC Class Codes: G08C 19/28 using pulse code

Abstract

The present invention provides a transmitter-receiver system which may selectively operate at one of a plurality of transmission frequencies and may selectively encode/decode the transmitted data in one of a plurality of data transmission formats. The present invention also provides a transmitter-receiver system in which a signal is transmitted using at least two different formats, so that manual selection of a specific transmission format is not required. Each transmitter and receiver includes a microcontroller which has been programmed to implement multiple encoding/decoding schemes and multiple data transmission formats in the unit. The microcontrollers may be programmed to implement any desired encoding/decoding scheme including the capability of emulating the encoding/decoding schemes and data transmission formats of transmitter-receiver systems currently in common use. The encoding/decoding scheme, the data transmission format and the data transmission frequency of the units are easily selectable from preprogrammed alternatives via selected switch settings in the individual devices. The transmitter or receiver may then be used in conjunction with the corresponding transmitter and/or receiver having the selected operating parameters, including but not limited to ASIC-based systems.

Claims

1. In a transmitter-receiver system in which a transmitter transmits at least two coded signals to a receiver, said transmitter comprising:

a plurality of switches that are selectable to provide an address;

a microcontroller coupled to said plurality of switches, said microcontroller generates a first and a second coded signals in a first and a second data transmission formats, said first and said second transmission formats being provided using different modulation techniques, each said first and second coded signals including the selected address; and

a circuit coupled to said microcontroller, said circuit having a plurality of frequency switches that are selectable to provide one of a plurality of transmission frequencies, said circuit serially transmits said first and second coded signals at a selected one of a plurality of transmission frequencies.

2. The transmitter of claim 1, wherein said plurality of switches are switches located within a dual inline package switch.

3. The transmitter of claim 1, wherein the microcontroller further generates a third output signal representative of a third data transmission format, said third data transmission format being provided using a different modulation technique from said first and said second data transmission formats, said first, second and third output signals being transmitted serially.

4. The transmitter of claim 3, wherein said third output signal includes the selected address and wherein said circuit transmits said third output signal at the selected one of a plurality of transmission frequencies.

5. The transmitter of claim 1, wherein said circuit comprises:

an oscillator circuit that provides a selected one of a plurality of transmission frequencies; and

an antenna for transmitting the coded signal at the selected transmission frequencies.

6. The system of claim 1, wherein said different modulation techniques are selected from a group consisting of:

frequency shift keying, pulse amplitude modulation and pulse code modulation.

7. A method of transmitting at least two coded signals, comprising the steps of:

providing a plurality of switches that are selectable to provide an address;

providing a first and a second output signals in a first and a second data transmission formats respectively, said first and said second data transmission formats being provided using different modulation techniques;

generating a first and second coded signals in the first and second data transmission formats based on said first and second output signals, each said coded signals including the selected address;

selecting one of a plurality of transmission frequencies; and

serially transmitting said first and said second coded signals at the selected one of a plurality of transmission frequencies.

8. The method of claim 7, wherein in the step of providing a plurality of switches, said switches are located within a dual inline package switch.

9. The transmitter of claim 7, further comprising the step of transmitting a third output signal in a third data transmission format said third data transmission format provided using a different modulation technique from said first and said second data transmission formats, wherein said coded signal in said third data transmission format is transmitted serially after said first and said second signals.

10. The method of claim 7, wherein said different modulation techniques are selected from a group consisting of:

frequency shift keying, pulse amplitude modulation and pulse code modulation.