Car alarm transmitting and paging system

• US 6,028,506 A
• Filed: 10/27/1997
• Issued: 02/22/2000
• Est. Priority Date: 10/27/1997
• Status: Expired due to Fees

• Current Assignee: Wei Hao Xiao
• Original Assignee: Wei Hao Xiao
• Inventors: Xiao, Wei Hao
• Primary Examiner(s): Wu, Daniel J.
• Application Number:
  US08/958,265
• Time in Patent Office: 848 Days
• Field of Search: 340/426, 340/425.5, 340/427, 340/428, 340/429, 340/539, 340/573, 455/458, 455/38.2
• US Class Current: 340/426.21
• CPC Class Codes: B60R 25/102 a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner

Abstract

A car alarm transmitting and paging system comprising an improvement of an existing conventional phone pager and transmitter which allows the pager to be used dually as a phone pager and also as an alarm activation notification device, wherein the transmitter is used in conjunction with a conventional vehicle alarm to transmit the notification of alarm activation to the carrier of the modified pager. Because the modified pager still accepts incoming calls and operates as a conventional pager, this invention obviates the necessity of owning and carrying two separate pagers, one for normal pager use, and the other for notification of alarm activation.

Claims

1. A multi-purpose car alarm transmitting and paging system utilizing a conventional pager for both conventional phone paging and car alarm activation notification, comprising:

a) a transmitter connected to a conventional car alarm via a relay, wherein said relay is activated when said conventional car alarm is activated, wherein said relay is not activated when said conventional car alarm is not activated, wherein said transmitter comprises;

1) a microprocessor which periodically sends digital codes according to information received from said relay;

(a) a digital "safe" code stored in said microprocessor, wherein said "safe" code is sent to a tone encoder if said relay is not activated;

(b) a digital "warning" code stored in said microprocessor, wherein said "warning" code is sent to said tone encoder if said relay is activated;

(c) a means of inputting other digital codes into said microprocessor;

(d) a user selectable means of toggling the periodic sending of said digital codes;

2) said tone encoder connected to said microprocessor, wherein said tone encoder converts said digital codes into tone signals, wherein said tone signals are compatible with local phone paging systems;

3) a frequency modulator connected to said tone encoder, wherein said frequency modulator converts said tone signals into radio frequencies, wherein said radio frequencies are compatible with local phone paging systems;

4) a power amplifier connected to said frequency modulator;

5) an antenna connected to said FM amplifier;

6) said transmitter having a small enough broadcasting range to conform to FCC regulations;

b) a modified phone pager which receives signals from both a conventional phone paging station and said transmitter, comprising;

1) an antenna;

2) a FM receiver connected to said antenna;

3) a tone decoder connected to said FM receiver, wherein said tone decoder converts said tone signals into digital codes;

4) a microprocessor connected to said tone decoder and a display;

(a) said microprocessor able to recognize said "safe" and "warning" messages of said microprocessor of said transmitter;

(b) said microprocessor also able to recognize incoming pages from said conventional phone paging station;

(c) said microprocessor sending a "warning" message to said display and an audio output when a "warning" message is received from said transmitter;

(d) said microprocessor not sending any message to said display and said audio output when a "safe" message is received from said transmitter;

(e) said microprocessor sending a "warning" message to said display and said audio output when neither a "safe" nor a "warning" message is received from said transmitter;

5) said display wherein said microprocessor determines what is displayed on said display;

6) said audio output wherein said microprocessor determines whether said audio output is activated or deactivated;

7) said pager having a means to select between an alarm mode and a normal mode, wherein said alarm mode allows said pager to accept incoming pages as well as transmissions from said transmitter, wherein said normal mode allows said pager to accept only incoming pages.