Data signalling system

• US 4,590,473 A
• Filed: 07/28/1982
• Issued: 05/20/1986
• Est. Priority Date: 07/28/1982
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Burke, Timothy M., Freeburg, Thomas A., Noble, Scott W., Krebs, Jay R.
• Primary Examiner(s): YUSKO, DONALD
• Application Number:
  US06/402,682
• Time in Patent Office: 1,392 Days
• Field of Search: 340/825.52, 340/825.44, 340/825.47, 455/38, 455/54, 455/56, 455/33, 375/113
• US Class Current: 340/9.11
• CPC Class Codes: G06K 13/0825 the ejection arrangement being of the push-push kind
• CPC Class Codes: H04W 88/026 using digital address codes

Abstract

A data signalling system for transmitting signals between at least one primary station and a plurality of secondary stations. The system is well adapted for use in multiple unit radio communications systems capable of noise and data communications. A register model is utilized which permits a highly flexible signalling system compatable with a wide range of communications networks. Data transfer is accomplished using fixed length data packets which are error correction encoded and transmitted utilizing PSK modulation.

Claims

1. In a register modelled system of wireless communication, wherein individual communication units are viewed as registers, a method for communicating between communication units comprising the steps of:

receiving said wireless communication, further comprising a modulated command packet having at least an operation code and an argument that may comprise the destination of an addressable register;

demodulating said wireless communication to extract said command packet from said communication;

parsing said command packet to extract said operation code and said argument; and

performing said operation upon any remaining portions of said communication in cooperation with said argument.

4. A register modelled, wireless communication system as claimed in claim 1 or 2, wherein said remaining communications portions may further comprise:

voice, data, or any combination thereof.

5. A register modelled, wireless communication system as claimed in claim 1 or 2,

wherein said command packet further comprises an address.

6. A register modelled, wireless communication system as claimed in claim 5, wherein said address further comprises:

fleet, group, unit or all address portions.

7. A register modelled, wireless communication system as claimed in claim 1,

wherein said command packet further comprises an address;

wherein said parsing step(s) further comprise parsing said command packet to extract a received address; and

wherein said operation performing steps occur only when corresponding portions of said received address and a unit'"'"'s predetermined address are substantially identical.

8. A register modelled, wireless communication system as claimed in claim 1 or 2, wherein said transmitting and said receiving step, respectively, is performed with a tranceiver.

2. A register modeled system of wireless communication, wherein individual communication units are viewed as registers, a method for communicating between communications units comprising the steps of:

generating a command packet further comprising at least an operation code and an argument that may comprise the destination of an addressable register;

appending any remaining portions of a desired communication;

modulating said command packet and any remaining portions to construct said wireless communication; and

transmitting said wireless communication.

3. A register modeled, wireless communication system as claimed in claim 2, wherein said packet generating step further comprises the steps of:

generating a cyclic redundancy check code from said command packet;

appending said cyclic redundancy check code to said command packet;

coding said appended command packet in a convolutional encoder means.

9. A system of remote unit command via wireless communication, said unit having a device controller and capable of having a plurality of register modelled devices, comprising the steps of:

addressing said device controller via a command packet comprised of at least an operation code and an argument; and

commanding said device controller to redirect, via an addressable register identified by said argument, any remaining portions of said communication to, or append any remaining portions from, one of said plurality of register modeled devices.