Patent US5625338A successfully refreshed from Google Patents.
US5625338A
Expired / Lapsed
US
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Wireless alarm system
Assignee: Tyco Safety Products Canada Ltd
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Filing: 1995-09-15
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Granted: 1997-04-29
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Expires: 2015-09-15
Abstract
Abstract A security system having a two way wireless keypad which operates in a particular manner for improved operation. The keypad processes information to effectively reduce communications between the control panel and the keypad. The keypad selectively activates and deactivates a transmitter and receiver arrangement for power conservation reasons. The system provides confirmation of communications between the keypad and the control panel to increase the reliability of the system.
Inventors
- 👤 Reinhart K. Pildner
- 👤 James Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:50
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/008; G08B25/01; G08B25/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A wireless keypad for a security system in combination with a controller of the security system, said wireless keypad comprising a transmitter for transmitting RF signals to the controller, a receiver for receiving RF signals from the controller, means for selectively turning said transmitter on and off, input keys for allowing a user to input information, a display screen for displaying prompts to assist a user in inputting pertinent information, logic processing means for determining which prompts are displayed and in what order, said logic processing means accumulating information in response to multiple prompts to define an instruction signal for the controller and then communicating the instruction signal to the controller by transmitting an RF signal, after which said receiver is temporarily activated for receipt of an acknowledgement signal from the controller indicating that the information was received, and upon receipt, turning the receiver off; said keypad including standalone a battery power supply.
Claim 2
Dependent Claim
153 words
A wireless keypad for a security system in combination with a controller of the security system, said wireless keypad comprising a transmitter for transmitting RF signals to the controller, a receiver for receiving RF signals from the controller, means for selectively turning said transmitter on and off, input keys for allowing a user to input information, a display screen for displaying prompts to assist a user in inputting pertinent information, logic processing means for determining which prompts are displayed and in what order, said logic processing means accumulating information in response to multiple prompts to define an instruction signal for the controller and then communicating the instruction signal to the controller by transmitting an RF signal, after which said receiver is temporarily activated for receipt of an acknowledgement signal from the controller indicating that the information was received, and upon receipt, turning the receiver off; said keypad including standalone a battery power supply.
Claim 3
Dependent Claim
26 words
A wireless keypad as claimed in claim 1 wherein said battery power supply, during normal operation of said keypad, has a life of over one year.
Claim 4
Dependent Claim
15 words
A wireless keypad as claimed in claim 2 wherein said battery power supply is non-rechargeable.
Claim 5
Dependent Claim
60 words
A wireless keypad as claimed in claim 1 wherein said logic process means includes a very low power wake up circuit and said keypad is selectively shut down such that only said wake up circuit draws power while temporarily returning said keypad to an active mode from time to time for a period sufficient to check in with the controller.
Claim 6
Dependent Claim
25 words
A wireless keypad as claimed in claim 1 wherein said logic processing means, upon actuating any actuation key, places said keypad in an active mode.
References Cited (Backward Citations)
US4754255A
Cited
US5252966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |