Telecommunication apparatus having an ID rechecking function

• US 5,109,537 A
• Filed: 06/23/1989
• Issued: 04/28/1992
• Est. Priority Date: 06/24/1988
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Toki, Akio
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): Faile, Andrew
• Application Number:
  US07/370,756
• Time in Patent Office: 1,040 Days
• Field of Search: 455/127, 455/343, 455/38, 455/73, 455/88, 455/68, 455/343, 379/61, 379/62, 379/57, 379/63, 340/825.44
• US Class Current: 455/88
• CPC Class Codes: H04M 1/727 Identification code transfer arrangements
• CPC Class Codes: H04M 1/73 Battery saving arrangements
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A radio telecommunication apparatus is disclosed which is adapted to, prior to the transmission and reception of control data, transfer its own ID code from an external memory to an internal memory and hold it there and to read the held data which is employed for control data transmission and reception out of the internal memory upon each subsequent transmission and reception of the control data.

Claims

1. A radio telecommunication apparatus comprising:

control means including internal memory means to which random access is gained;

external memory means provided independently of said control means to store a first identification code which is initially set thereto; and

radio receiving means for receiving a signal coming from a radio channel and for detecting a second identification code which is contained in the coming signal;

where

said control means comprises means for reading the first identification code out of said external memory means prior to the reception of the coming signal and for transferring said first identification code to said internal memory means and holding said first identification code there, and means for reading said first identification code out of said internal memory means for each detection of the second identification code by said radio receiving means and comparing the second identification code detected by said radio receiving means with said first identification code read out from said internal memory means to confirm a coincide between said first and second identification codes, said control means further including means for reading at least one identification code out of said external memory means to compare said one identification code with said second identification code for rechecking, only upon the detection of a coincidence between the second identification code detected by said radio receiving means and said first identification code.

2. A radio telecommunication apparatus having power source means, according to claim 1, wherein said control means, responsive to the turning ON of said power source means, reads said first identification code out of said external memory means and for transferring said first identification code to said internal memory means and holding said first identification code there.

3. A radio telecommunication apparatus according to claim 1, wherein said control means further comprises means for monitoring whether or not said first identification code stored in said external memory means is changed and means for, upon the detection of that change, reading said first identification code and for transferring said first identification code to said internal memory means and holding said first identification code there.

4. A radio telecommunication apparatus provided in a cordless telephone set which is included in a cordless telephone system having a fixed device connected to a subscriber'"'"'s line and the cordless telephone set connected to the fixed device via a radio channel, said apparatus comprising:

control means including internal memory means to which random access is gained;

external memory means, provided independently of the control means, for storing a first identification code which is initially set thereto; and

radio receiving means for receiving control data coming from the fixed device via the radio channel and for detecting a second identification code in the control data, wherein

said control means comprises means for, prior to the reception of the control data, reading said first identification code out of said external memory means and for transferring said first identification code to said internal memory means and holding said first identification code there, and means for, upon each detection of the second identification code by the radio receiving means, reading the first identification code out of said internal memory means to compare the second identification code detected by said radio receiving means with said read-out first identification code, thereby confirming a coincide between said first and second identification codes, said control means further including means for reading at least one identification code out of said external memory means to compare said one identification code with said second identification code for rechecking, only upon the detection of a coincidence between the second identification code detected by said radio receiving means and said first identification code.

5. A radio telecommunication apparatus provided in a fixed device which is included in a cordless telephone system having the fixed device connected to a subscriber'"'"'s line and a cordless telephone set connected to the fixed device via a radio channel, said apparatus comprising:

control means including internal memory means to which random access is gained;

external memory means, provided independently of said control means, for storing a first identification code which is initially set thereto; and

radio receiving means for receiving control data coming from said cordless telephone set via the radio channel and for detecting a second identification code in the control data, wherein said control means comprises means for, prior to the reception of the control data, reading said first identification code out of said external memory means and for transferring said first identification code to an internal memory means and holding said first identification code there and means for, upon each detection of the second identification code by said radio receiving means, reading said first identification code out of said internal memory means to compare the second identification code detected by said radio receiving means with said first identification code, thereby confirming a coincide between said first and second identification codes, said control means further including means for reading at least one identification code out of said external memory means to compare said one identification code with said second identification code for rechecking, only upon the detection of a coincidence between the second identification code detected by said radio receiving means and said first identification code.

6. A radio telecommunication apparatus provided in a pager receiver which is included in a paging system having a base station for transmitting a paging signal containing a first identification code and a plurality of pager receivers for receiving the paging signal which is transmitted from the base station, said apparatus comprising:

control means including internal memory means to which random access is gained;

external memory means, provided independently of said control means, for storing a second identification code which is initially set thereto; and

radio receiving means for receiving the paging signal coming from the base station and for detecting the first identification code which is contained in the paging signal, wherein

said control means comprises means for, prior to the reception of the paging signal, reading said second identification code out of said external memory means and for transferring said second identification code to said internal memory means and holding said second identification code there, and means for, upon each detection of the first identification code by said radio receiving means, reading the second identification code out of said external memory means to compare the first identification code detected by said radio receiving means with said read out second identification code, said control means further including means for reading at least one identification code out of said external memory means to compare said one identification code with said second identification code for rechecking, only upon the detection of a coincidence between the second identification code detected by said radio receiving means and said first identification code.

7. A radio telecommunication apparatus having power source means comprising:

control means including internal memory means to which random access is gained;

external memory means, provided independently of the control means, for storing a first identification code; and

radio receiving means for receiving a signal coming via a radio channel and for detecting a second identification code which is contained in the received signal, wherein

said control means comprises means for, upon the first detection of the second identification code by the radio receiving means following the turning ON of said power source means, reading the first identification code out of said external memory means to compare the second identification code detected by said radio receiving means with the read-out first identification code, thereby confirming a first coincide between said first and second identification codes and for transferring said first identification code to said internal memory means and for holding said first identification code there, and means for, upon each subsequent detection of the second identification code by said radio receiving means, reading the first identification code out of said internal memory means to compare the second identification code detected by said radio receiving means with the read-out first identification code, thereby confirming a second coincide between said first and second identification codes, said control means further including means reading at least one identification code out of said external memory means to compare said one identification code with said second identification code for rechecking, only upon the detection of a coincidence between the second identification code detected by said radio receiving means and said first identification code.

8. A method for checking and rechecking identification code, comprising the step of:

(1) reading, from external memory means, a first identification code prior to the reception of a signal coming via a radio channel and transferring the first identification code to internal memory means and holding the first identification code there;

(2) receiving the signal and detecting a second identification code which is contained in the signal;

(3) upon the detection of the second identification code at step (2), reading from said internal memory means said first identification code;

(4) comparing the detected second identification code with the first identification code which is read out at step (3) to confirm a coincide between said first and second identification codes; and

(5) reading at least one identification code out of said external memory means, upon the detection of the coincidence between the second identification code detected by said radio receiving means and said first identification code, to compare said one identification code with said second identification code for rechecking.