Two-way radio with silent annunciation

• US 6,584,306 B2
• Filed: 06/21/2001
• Issued: 06/24/2003
• Est. Priority Date: 02/23/1998
• Status: Expired due to Term

• Current Assignee: Cobra Electronics Corp. (Cedar Electronics Holdings Corp.)
• Original Assignee: Cobra Electronics Corp. (Cedar Electronics Holdings Corp.)
• Inventors: Mirabelli, Anthony
• Primary Examiner(s): Urban, Edward F.
• Assistant Examiner(s): Nguyen, Simon
• Application Number:
  US09/886,825
• Publication Number:
  US 20010036819A1
• Time in Patent Office: 733 Days
• Field of Search: 455/567, 455/90, 455/347, 455/517, 455/518, 455/519, 455/520, 455/521, 455/575
• US Class Current: 455/347
• CPC Class Codes: H04M 19/04 the ringing-current being generated at the substations
• CPC Class Codes: H04M 19/047 Vibrating means for incoming calls
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A point-to-point two-way radio system is disclosed. The two-way radio system is comprised of a first and second two-way handheld walkie-talkie radio, wherein the first and second two-way handheld walkie-talkies do not communicate one to the other through a base station. Each handheld walkie-talkie radio is comprised of a transmitter for transmitting a call announcement signal and a transmitter for transmitting a separate voice signal. The voice signal is different from the call announcement signal and is transmitted over a fixed frequency range. The handheld walkie-talkie also has a receiver for receiving the voice communication signal and call announcement signal and for announcing the call announcement signal and a switch for selectively choosing between an audible call announcement or a vibrational call announcement.

Claims

1. A point-to-point two-way radio system comprising:

a first and second two-way handheld walkie-talkie radio, wherein the first and second two-way handheld walkie-talkies do not communicate one to the other through a base station, each handheld walkie-talkie radio comprising;

a transmitter for transmitting a call announcement signal and for transmitting a separate voice signal, said voice signal being different from said call announcement signal and being transmitted over a fixed frequency range;

a receiver for receiving the voice communication signal and call announcement signal and for announcing the call announcement signal;

a vibrator responsive to the call announcement signal;

an audible notification means responsive to the call announcement signal; and

,

a switch for selectively choosing between an audible call announcement or a vibrational call announcement.

2. The two-way radio system of claim 1 wherein the fixed frequency range is 462.5 MHZ to 463.0 MHZ.

3. The two-way radio system of claim 1 wherein the first and second handheld radios operate on DC power.

4. The two-way radio system of claim 3 wherein the first and second handheld radios operate on 4 AAA alkaline batteries.

5. The two-way radio system of claim 3 wherein the first and second handheld radios operate on a nickel cadmium battery.

6. The two-way radio system of claim 3 wherein one of the handheld radios operates on a vehicle battery.

7. The two-way radio system of claim 1 wherein the fixed frequency range is 446.00625 MHZ to 446.09375 MHZ.