Control circuit for center high mounted brake lights

• US 5,631,627 A
• Filed: 12/12/1995
• Issued: 05/20/1997
• Est. Priority Date: 12/12/1995
• Status: Expired due to Fees

• Current Assignee: Yung-Kuei Chou
• Original Assignee: Yung-Kuei Chou
• Inventors: Chou, Yung-kuei
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): GOINS, DAVETTA WOODS
• Application Number:
  US08/570,780
• Time in Patent Office: 525 Days
• Field of Search: 340/479, 340/441, 340/466, 340/467, 340/464, 340/472, 307/10.8, 362/276
• US Class Current: 340/479
• CPC Class Codes: B60Q 1/302 mounted in the vicinity, e.g. in the middle, of a rear window
• CPC Class Codes: B60Q 1/444 with indication of the braking strength or speed changes, e.g. by changing shape or intensity of the indication B60Q1/1407, B60Q1/442, B60Q1/447 take precedence

Abstract

A control circuit for a center high mounted brake light of an automobile includes a tachometer for generating a voltage signal in response to a speed of the automobile, a preamplifier for amplifying the voltage signal from the tachometer to a predetermined voltage range, a voltage-controlled oscillator for outputting an oscillating signal in proportion to the voltage signal from the preamplifier, and a flicker circuit having a frequency divider for receiving the oscillating signal from the voltage-controlled oscillator and flickering the brake light in accordance with an output signal of the frequency divider,

Claims

1. A control circuit for a center high mounted brake light of an automobile, comprising:

a tachometer for generating a voltage signal in response to a speed of the automobile;

a preamplifier for amplifying the voltage signal from the tachometer to a predetermined voltage range;

a voltage-controlled oscillator for outputting an oscillating signal in proportion to the voltage signal from the preamplifier; and

a flicker circuit having a frequency divider for receiving the oscillating signal from the voltage-controlled oscillator and flickering the brake light in accordance with an output signal of the frequency divider and at a flicker frequency related to the speed of the automobile.

2. A control circuit as claimed in claim 1, wherein said voltage-controlled oscillator includes an integrator.

3. A control circuit as claimed in claim 1, wherein said voltage-controlled oscillator is made from an integrated circuit.