Radio telephone system and method of registering an ID code therein

• US 5,157,710 A
• Filed: 08/23/1991
• Issued: 10/20/1992
• Est. Priority Date: 05/15/1987
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Itoh, Koichi
• Primary Examiner(s): Dwyer, James L.
• Assistant Examiner(s): Bost, Dwayne D.
• Application Number:
  US07/749,284
• Time in Patent Office: 424 Days
• Field of Search: 379/58, 379/61-63, 455/54
• US Class Current: 455/411
• CPC Class Codes: H04M 1/727 Identification code transfer arrangements

Abstract

A radio telephone system which comprises a base unit (1) connected to a wire line (3) and at least one radio telephone set (2) to be coupled with the base unit (1) through a radio circuit, and in which coupling between the base unit and the radio telephone set is controlled on the basis of an identification code. A non-volatile first memory (58) having an identification previously written therein is provided in one of the base unit (1) and the radio telephone set (2), and an optionally writable second memory (60) is provided in the other. Written in the second memory (60) is a predetermined identification code on the basis of the identification code stored in the first memory (58).

Claims

1. A radio telecommunication system, comprising:

a first radio unit having an identification code;

a second radio unit;

generating means, provided in one of the first and second radio units, for generating a first reference code;

establishing means for establishing a radio link between the first radio unit and the second radio unit;

comparing means provided in the other one of the first and second radio units for comparing said first reference code generated by said one of the first and second radio units with a second reference code previously stored in said other one of the first and second radio units;

transmitting means for transmitting the identification code stored in the first radio unit to the second radio unit over the established radio link; and

storing means provided in the second radio unit for storing the identification code transmitted from the first radio unit in response to a match of the compared first and second reference codes.

2. The radio telecommunication system according to claim 1, further comprising:

sending means for sending the identification code stored in the storing means back to the first radio unit;

comparing means for comparing the identification code sent back to the first radio unit with the identification code stored in the first radio unit; and

indication means for indicating to a user of the first radio unit whether the identification code sent back to the first radio unit matches the identification code stored in the first radio unit in response to a result of the comparison by the comparing means.

3. The radio telecommunication system according to claim 1, wherein the generating means comprises input means for inputting the reference code and storing means for storing the reference code input by the input means.

4. A method of registering an identification code stored in a first radio unit into a second radio unit, comprising the steps of:

generating a first reference code at one of the first and second radio units;

establishing a radio link between the first radio unit and the second radio unit;

transmitting the first reference code from said one of the first and second radio units to the other one of the first and second radio units over the established radio link;

comparing said first reference code with a second reference code previously stored in said other one of the first and second radio units;

transmitting the identification code stored in the first radio unit to the second radio unit over the established radio link; and

storing the identification code transmitted from the first radio unit into the second radio unit in response to a match of the compared first and second reference codes.

5. The method according to claim 4, further comprising the steps of:

sending the identification code transmitted from the first radio unit and stored in the second radio unit back to the first radio unit;

comparing the identification code sent back to the first radio unit with the identification code stored in the first radio unit; and

informing a user of the first radio unit whether the identification code sent back to the first radio unit matches the identification code stored in the first radio unit.

6. The method according to claim 4, wherein the step of generating a reference code includes the steps of inputting the reference code and storing the reference code in each of the first and second radio units.

7. The method according to claim 4, wherein the step of establishing a radio link comprises the steps of transmitting signals over a predetermined radio channel at one radio unit and receiving signals over a predetermined radio channel at the other radio unit.

8. A radio telephone system, comprising:

a base unit connected to a telephone line;

a radio telephone set comprising means for coupling said radio telephone set through a radio link to said base unit;

means for electrically connecting said base unit to said radio telephone set;

first memory means disposed in said base unit to be optionally written therein;

second nonvolatile memory means disposed in said radio telephone set and having an identification code previously written therein which is not previously stored within said base unit;

means for writing in said first memory means said identification code previously written in said second memory means, through said radio link;

means for inputting an input secret number;

means for comparing said input secret number with a preset secret number and for producing a coincidence output when said input secret number and said preset secret number coincide; and

means for enabling operation of said writing means only when said comparing means produces a coincidence output.

9. A radio telephone system as set forth in claim 8, wherein said first memory means has power source backup means.

10. A radio telephone system as set forth in claim 8, wherein said first memory means stores an abbreviated dial number together with said identification code.

11. A radio telephone system as set forth in claim 8, wherein a plurality of said radio telephone sets are provided each having a corresponding one of said identification codes written in said respective first memory means and said base unit further comprises means for selectively calling the respective radio telephone sets on the basis of said plurality of identification codes.

12. A radio telephone system as set forth in claim 8, wherein said base unit further comprises third nonvolatile memory means for storing therein said identification code.

13. A radio telephone system as set forth in claim 8, further comprising:

means for transferring to said base unit said identification code written in said second memory means; and

means provided in said base unit for comparing said transferred identification code with said identification code previously written in said first memory means thereby confirming if said identification code is correctly written in said second memory means.

14. A radio telephone system as set forth in claim 8, wherein said writing means comprises:

means for electrically connecting said base unit to said radio telephone set;

means for producing a detecting output upon completion of an electrical connection between said base unit and said radio telephone set; and

manual input means operable in response to the presence of said detecting output to start writing in said first memory means said identification code previously written in said second memory means.

15. A radio telephone system as set forth in claim 14, wherein said manual input means is provided in said radio telephone set.

16. A radio telephone system as set forth in claim 14, wherein said manual input means is provided in said base unit.