Police radar detector

• US 5,001,777 A
• Filed: 09/12/1989
• Issued: 03/19/1991
• Est. Priority Date: 11/27/1987
• Status: Expired due to Term

• Current Assignee: James P. Liautaud
• Original Assignee: James P. Liautaud
• Inventors: Liautaud, James P.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Smith, Ralph
• Application Number:
  US07/406,873
• Time in Patent Office: 553 Days
• Field of Search: 455/227-229, 455/345, 455/349, 342/20, 342/69, 342/70, 342/457, 342/465
• US Class Current: 455/227
• CPC Class Codes: G01S 7/022 Road traffic radar detectors

Abstract

A radar detector system and method. The system includes a front-facing antenna and receiver and a rear-facing antenna and receiver. The two receivers are electrically connected to a single control head that includes separate light and sound indicators for each of the front-facing and the rear-facing receivers. A tone generator is included in the module to identify audibly the front-facing receiver and the rear-facing receiver.

Claims

1. A radar detector system for use in a motor vehicle, comprising:

a first receiver having a first directional antenna for detecting radar signals originating from in front of a motor vehicle, and to a lesser extent, from the sides of the motor vehicle;

means for mounting the first receiver to a motor vehicle such that the first directional antenna detects radar signals originating from inn front of the vehicle in an unobstructed path;

first sound means electronically connected to the first receiver for emitting an audible noise of a first pitch when the first directional antenna detects a radar signal;

a second receiver having a second directional antenna for detecting radar signals originating from behind a motor vehicle and, to a lesser extent, from the sides of the motor vehicle;

means for mounting the second receiver to a motor vehicle such that the second directional antenna detects radar signals originating from behind the vehicle in an unobstructed path;

second sound means electronically connected to the second receiver for emitting an audible noise of a second pitch when the second directional antenna detects a radar signal;

an indicator head which comprises the first sound means and the second sound means; and

means for mounting the indicator head inside of a motor vehicle.

2. The radar detector system of claim 1 wherein the first receiver further comprises:

first conversion means connected to the first directional antenna for converting radar signals to electrical signals; and

a first microprocessor electronically connected to the first conversion means, the first microprocessor comprising first scanning means for scanning the electrical signals, first measuring means for measuring the intensity and frequency of the electrical signals, a first random access memory for recording measurements generated by the first measuring means, and first signal means electronically connected to the first sound means for signaling the first sound means when the first random access memory records substantially identical measurements on each of six successive scans.

3. The radar detector system of claim 2 wherein the strength of the signal transmitted from the first signalling means to the first sound means varies according to the intensity and frequency of the electrical signals measured by the first measuring means, thereby causing the audible noise generated by the first sound means to be louder or softer depending upon the strength of the radar signals detected by the first directional antenna.

4. The radar detector system of claim 1 wherein the second receiver further comprises:

second conversion means connected to the second directional antenna for converting radar signals to electrical signals; and

a second microprocessor electronically connected to the second conversion means, the second microprocessor comprising second scanning means for scanning the electrical signals, second measuring means for measuring the intensity and frequency of the electrical signals, a second random access memory for recording measurements generated by the second measuring means, and second signal means electronically connected to the second sound means for signaling the second sound means when the second random access memory records substantially identical measurements on each of six successive scans.

5. The radar detector system of claim 4 wherein the strength of the signal transmitted from the second signalling means to the second sound means varies according to the intensity and frequency of the electrical signals measured by the second measuring means, thereby causing the audible noise generated by the second sound means to be louder or softer depending upon the strength of the radar signals detected by the second directional antenna.

6. The radar detector system of claim 1 wherein the indicator head further comprises:

a first light thereon electronically connected to the first receiver such that the first light is on when the first directional antenna detects a radar signal, and is otherwise off; and

a second light thereon electronically connected to the second receiver such that the second light is on when the second directional antenna detects a radar signal, and is otherwise off.

7. The radar detector system of claim 6 wherein the first receiver further comprises:

first conversion means connected to the first directional antenna for converting radar signals to electrical signals; and

a first microprocessor electronically connected to the first conversion means, the first microprocessor comprising first scanning means for scanning the electrical signals, first measuring means for measuring the intensity and frequency of the electrical signals, a first random access memory for recording measurements generated by the first measuring means, the first signal means electronically connected to the first light for signaling the first light when the first light records substantially identical measurements on each of six successive scans.

8. The radar detector system of claim 7 wherein the strength of the signal transmitted from the first signaling means to the first light varies according to the intensity and frequency of the electrical signals measured by the first measuring means, thereby causing the first light to glow more or less brightly depending upon the strength of the radar signals detected by the first directional antenna.

9. The radar detector system of claim 6 wherein the second receiver further comprises:

second conversion means connected to the second directional antenna for converting radar signals to electrical signals; and

a second microprocessor electronically connected to the second conversion means, the second microprocessor comprising second scanning means for scanning the electrical signals, second measuring means for measuring the intensity and frequency of the electrical signals, a second random access memory for recording measurements generated by the second measuring means, and second signal means electronically connected to the second light for signaling the second light when the second random access memory records substantially identical measurements on each of six successive scans.

10. The radar detector system of claim 9 wherein the strength of the signal transmitted from the second signalling means to the second light varies according to the intensity and frequency of the electrical signals measured by the second measuring means, thereby causing the second light to glow more or less brightly depending upon the strength of the radar signals detected by the second directional antenna.

11. The radar detector system of claim 1 wherein the first directional antenna detects radar signals originating from distances of up to about four miles in front of a motor vehicle and about one mile on either side of the motor vehicle.

12. The radar detector system of claim 1 wherein the second directional antenna detects radar signals originating from distances of up to about four miles behind a motor vehicle and about one mile on either side of the motor vehicle.