Paging receiver with paging receiver identification code digits transmitted in order of increasing significance

• US 4,857,915 A
• Filed: 10/20/1987
• Issued: 08/15/1989
• Est. Priority Date: 10/20/1987
• Status: Expired due to Term

• Current Assignee: Flatt Morris Associates SA, Management And Investment, S.A.
• Original Assignee: Telefind Corporation
• Inventors: Andros, Andrew A., Campana, Thomas J.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Pudpud, E.
• Application Number:
  US07/110,511
• Time in Patent Office: 665 Days
• Field of Search: 455/227, 455/228, 455/344, 375/89, 375/91, 340/825.44, 340/825.47, 340/825.65, 340/825.07, 340/825.52, 340/825.3, 340/825.48, 340/791, 340/792, 340/825.04, 370/93, 370/94, 370/85
• US Class Current: 340/7.25
• CPC Class Codes: G08B 5/22 using electric transmission; using electromagnetic transmission
• CPC Class Codes: G08B 5/224 Paging receivers with visible signalling details
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0245 according to signal strength
• CPC Class Codes: H04W 88/022 Selective call receivers
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A paging receiver is disclosed which is compatible with transmissions from analog or digital paging transmitters. The paging receiver has a command structure which permits it to be dynamically programmable to change its functionality including programming of the channels which the paging receiver is to receive. The programmability of the channels permits the paging receiver to be used for making national, regional, remote area, local area, and sublocal area pages, and pages to a group in the local area and to switch from channels which are heavily used during peak paging times to lesser used channels. The paging receiver transmits paging receiver identification code digits in an order of increasing significance which significantly lessens power consumption for all paging receivers tuned to a particular channel channel for determining if a page is to be received which prolongs paging receiver battery life. The paging receiver displays the place of origin of pages as either being of local origin or from other areas. The paging receiver antenna is continuously tunable to permit compensation for variation in antenna gain caused by environmental factors which can seriously degrade signal strength.

Claims

1. A battery powered RF paging receiver for receiving commands with each command specifying a different function to be performed by the paging receiver and containing an identical multi-digit paging receiver identification code which identifies the paging receiver with the digits of the identification code being transmitted from a transmitter to the paging receiver in an order of increasing significance preceding each command comprising:

(a) a RF tuner, powered by the battery, for receiving a channel on which the commands are to be transmitted;

(b) a memory for storing a multiple digit paging receiver identification code identifying the paging receiver; and

(c) control means, coupled to the RF tuner, for sequentially decoding digits of a transmitted paging receiver identification code specifying a paging receiver to receive one of the commands, and comparing the received digits sequentially with corresponding stored digits of the paging receiver identification code in an order of increasing significance of the digits until

(i) a match is not found between one of the stored and transmitted digits at which time the control means deactivates the RF tuner to stop the tuner from drawing power from the batter or

(ii) a complete match is found between the stored and transmitted digits of the paging receiver identification code at which time the command is decoded and caused to be executed by the control means;

whereby the comparison of digits of the paging receiver identification code transmitted in an order of increasing significance and the stored paging receiver identification code minimizes time that the RF tuner draws power from the battery in determining that a page is not addressed to the paging receiver.

2. A battery powered RF paging receiver in accordance with claim 1 wherein:

the control means activates the RF tuner to receive the channel for a first predetermined time interval and monitors the RF tuner to determine if the channel carrier is received during the first predetermined time interval, if the channel carrier is not detected by the RF tuner, the control means turns off the tuner to cease reception of the channel carrier and if the channel carrier is detected the control means continues the activation of the tuner to receive at least the first digit of the transmitted paging receiver identification code.

3. A battery powered RF paging receiver in accordance with claim 1 wherein:

one of the commands is an identification command causing the control means to store in the memory for the paging receiver identification code a new unique paging receiver identification code.

4. A battery powered RF paging receiver in accordance with claim 3 wherein:

the memory for storing the paging receiver identification code is programmed prior to operation of the paging receiver with a non-unique default identification code.

5. A battery powered RF paging receiver in accordance with claim 4 wherein:

prior to operation of the paging receiver to receive commands, the control means, in response to a program identification command, programs the memory for storing the paging receiver identification code with a unique paging receiver identification code.

6. A battery powered Rf paging receiver in accordance with claim 1 further comprising:

(a) a display for displaying characters of a page transmitted with one of the commands; and

wherein

(b) the command is a local numeric display command causing the control means to illuminate the display to display that the page originates in a local area and controlling processing by the control means of the page to display a numeric page.

7. A battery powered RF paging receiver in accordance with claim 1 further comprising:

(a) a display for displaying characters of a page transmitted with one of the commands; and

wherein

(b) the command is a local alphanumeric display command causing the control means to illuminate the display to display that the page originates in a local area and controlling processing by the control means of the page to display an alphanumeric page.

8. A battery powered RF paging receiver in accordance with claim 1 further comprising:

(a) a display for displaying characters of a page transmitted with one of the commands; and

wherein

(b) the command is a national numeric display command causing the control means to illuminate the display to display that the page does not originate in the area in which the page is received and controlling processing by the control means of the page to display a numeric page.

9. A battery powered RF paging receiver in accordance with claim 1 further comprising:

(a) a display for displaying characters of a page transmitted with one of the commands; and

wherein

(b) one of the commands is a national alphanumeric display command causing the control means to illuminate the display to display that the page does not originate in the area in which the page is received and controlling processing by the control means of the page to display an alphanumeric page.

10. A battery powered RF paging receiver in accordance with claim 1 further comprising:

(a) a message memory for storing a plurality of pages with each page being stored in a separate storage location with at least some of the storage locations being addressable; and

wherein

(b) one of the commands is a specific memory command which specifies a particular addressable storage location in which a page accompanying the specific memory command is to be stored.

11. A battery powered RF paging receiver in accordance with claim 10 wherein:

(a) each specific memory command contains a digit specifying the particular memory location in which the page accompanying the specific memory command is to be stored; and

(b) the control means causes the page accompanying the specific memory command to be stored in the specified memory location.

12. A battery powered RF paging receiver in accordance with claim 1 wherein:

(a) the paging receiver contains an external data jack at which data is to be outputted; and

wherein

(b) one of the commands is an external data command causing the control means to output a page accompanying the external data command at the external data jack.

13. A battery powered RF paging receiver in accordance with claim 1 wherein the paging receiver further comprises:

(a) a channel memory which is programmable to store at least one channel to be received by the RF tuner; and

wherein

(b) one of the commands is a channel programming command specifying a change in a channel; and

(c) the control means decodes the channel programming command, causes storage in the channel memory a change in channel specified by the decoded channel programming command and causes the RF tuner to be activated to receive at least one channel stored in the channel memory.

14. A battery powered RF paging receiver in accordance with claim 13 wherein:

the channel programming command causes the control means to store an additional channel to be received in the channel memory.

15. A battery powered RF paging receiver in accordance with claim 13 wherein:

the channel programming command causes the control means to cause erasure of all existing channels stored in the channel memory except the channel on which a carrier was last detected by the RF tuner and to store at least one new channel in the channel memory.

16. A battery powered RF paging receiver in accordance with claim 13 wherein:

the channel programming command causes the control means to cause erasure of all existing channels stored in the channel memory and to store a new channel in the channel memory and activate the RF tuner to receive the new channel.

17. A battery powered RF paging receiver in accordance with claim 13 wherein:

the channel programming command causes the control means to cause erasure of all existing channels stored in the channel memory and to load the channel memory with channels including a destination where the channel is to be received by the paging receiver.

18. A battery powered RF paging receiver in accordance with claim 1 wherein:

the paging receiver identification code uniquely identifies the paging receiver.

22. A battery powered paging receiver in accordance with claim 2 wherein:

the paging receiver identification code contained with each command is identical.

19. A battery powered RF paging receiver for receiving pages with each page containing a multi-digit paging receiver identification code which identifies a paging receiver to receive the page in which digits of the identification code are transmitted from a transmitter to the paging receiver in an order of increasing significance prior to characters of the page being received by the paging receiver comprising:

(a) an RF tuner, powered by the battery, for receiving the pages;

(b) a memory for storing a multiple digit paging receiver identification code identifying the paging receiver; and

(c) a controller, coupled to the RF tuner, for sequentially decoding digits of the paging receiver identification code which identifies a paging receiver to receive a page and comparing the received digits sequentially with corresponding stored digits of the paging receiver identification code in a order of increasing significance of the digits until

(i) a match is not found between one of the stored and transmitted digits at which time the controller deactivates the RF tuner to stop the tuner from drawing of power from the battery or

(ii) a complete match is found between the stored and transmitted digits of the paging receiver identification code at which time processing of characters within the page occurs;

whereby the comparison of digits of the paging receiver identification code transmitted in an order of increasing significance and the stored paging receiver identification code minimizes time that the RF tuner draws power from the battery in determining that a page is not addressed to the paging receiver.

20. A battery powered RF paging receiver in accordance with claim 19 wherein:

the paging receiver identification code uniquely identifies the paging receiver.

21. A battery powered RF paging receiver for receiving commands with each command containing a paging receiver identification code identifying the paging receiver and specifying a function to be performed upon receiving each command comprising:

a RF tuner for receiving the commands;

a controller, responsive to commands received by the RF tuner, for decoding each command and causing the specified function to occur in accordance with the command;

an external data jack, coupled to the RF tuner, for outputting data; and

wherein

one of the commands is an external data command, and the controller in response to the external data command controls outputting of characters of a page accompanying the external data command at the external data jack.

23. A battery powered RF paging receiver for receiving pages with each page containing a multi-digit paging receiver identification code which identifies a paging receiver to receive the page in which digits of the identification code are transmitted from a transmitter to the paging receiver in an order of increasing significance prior to a remainder of the page being received by the paging receiver comprising:

(a) an RF tuner, powered by the battery, for receiving the pages;

(b) a memory for storing a multiple digit paging receiver identification code identifying the paging reciever; and

(c) a controller, coupled to the RF tuner, for sequentially decoding digits of the paging receiver identification code which identifies a paging receiver to receive a page and comparing the received digits sequentially with corresponding stored digits of the paging receiver identification code in an order of increasing significance of the digits until

(i) a match is not found between one of the stored and transmitted digits at which time the controller deactivates the RF tuner to stop the tuner from drawing of power from the battery or

(ii) a complete match is found between the stored and transmitted digits of the paging receiver identification code at which time processing of the page occurs;

whereby the comparison of digits of the paging receiver identification code transmitted in an order of increasing significance and the stored paging receiver identification code minimized time that the RF tuner draws power from the battery in determining that a page is not addressed to the paging receiver.

24. A battery powered RF paging receiver for receiving a page conveying information and containing an external data command and a paging receiver identification code identifying the paging receiver comprising:

a RF tuner for receiving the external data command;

an external jack, coupled to the RF tuner, for outputting the information; and

wherein

a controller, responsive to the external data command received by the RF tuner, decodes the external data command and causes the information conveyed by the page to be outputted at the external data jack.