Sign transmitter unit
First Claim
1. A transmitter unit for use with a sign and an alarm source, the transmitter unit comprising:
- a) an alarm detector for detecting an alarm from the alarm source,b) a radio frequency transmitter circuit,c) a transmitter control circuit, andd) a transmitter housing for housing the transmitter circuit and transmitter control circuit,wherein the transmitter control is for recognizing alarms detected by the alarm detector and sending messages to the transmitter circuit in response to a detected alarm, and the transmitter circuit is for transmitting those messages over radio frequencies to the sign, andwherein the alarm detector comprises a telephone decoder for receiving DTMF tones or dial pulses and decoding the DTMF tones or dial pulses into decoded data, and a portion of the transmitter control circuit for receiving the decoded data and determining when an emergency number has been decoded by the telephone decoder.
1 Assignment
0 Petitions
Accused Products
Abstract
Sign 1 has frame 13 attaching to base 9 and supporting character plates 4. Casing 11 attaches to frame 13 and holds character plates 4 against frame 13. Light assembly 15 and base 9 backlight character plates 4. Backlight is diffusion chamber 17 sidelit by light assembly 15. Casing 11 hides access to the mount and is not easily removable. Light assembly 15 is externally powered and is activated by external messages and by low ambient light. An Emergency Alarm message causes flashing in one color and intermittent activation of sound. For non-emergency, alternate light mode is used with constant sound. Transmitter 1501 transmits messages for the sign 1. The transmitter 1501 learns emergency telephone numbers for dial detection on a telephone line, in addition to standard emergency telephone number. Emergency button 1507 can begin transmission of emergency alarm message. Transmitter 1501 may have other alarm inputs.
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Citations
26 Claims
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1. A transmitter unit for use with a sign and an alarm source, the transmitter unit comprising:
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a) an alarm detector for detecting an alarm from the alarm source, b) a radio frequency transmitter circuit, c) a transmitter control circuit, and d) a transmitter housing for housing the transmitter circuit and transmitter control circuit, wherein the transmitter control is for recognizing alarms detected by the alarm detector and sending messages to the transmitter circuit in response to a detected alarm, and the transmitter circuit is for transmitting those messages over radio frequencies to the sign, and wherein the alarm detector comprises a telephone decoder for receiving DTMF tones or dial pulses and decoding the DTMF tones or dial pulses into decoded data, and a portion of the transmitter control circuit for receiving the decoded data and determining when an emergency number has been decoded by the telephone decoder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A transmitter unit for use with a sign and an alarm source, the transmitter unit comprising:
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a) an alarm detector for detecting an alarm from the alarm source, b) a radio frequency transmitter circuit, c) a transmitter control circuit, and d) a transmitter housing for housing the transmitter circuit and transmitter control circuit, wherein the transmitter control is for recognizing alarms detected by the alarm detector and sending messages to the transmitter circuit in response to a detected alarm, and the transmitter circuit is for transmitting those messages over radio frequencies, and wherein the alarm detector comprises an audible tone detector for detecting an audible tone that represents an alarm. - View Dependent Claims (25, 26)
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Specification