Turn signal monitor circuit
First Claim
1. A non-obtrusive turn signal monitor and reminder circuit for monitoring a turn signal in a vehicle and reminding an operator after a set time period, the turn signal monitor and reminder circuit comprising:
- a turn signal circuit activated to provide a pulsating signal;
a converter coupled to the turn signal circuit for converting the pulsating signal into a direct current output signal while the turn signal is activated;
a first timer coupled to the converter for providing a first timer output signal wherein the first timer is powered by the converter output signal, the first timer comprising;
first adjustable delay means for providing a delay time period before providing the first timer output signal; and
resetting means for suspending the first adjustable delay means upon the occurrence of a specified event;
a second timer directly coupled to the first timer for providing an intermittent alarm driver signal in response to the first timer output signal, the intermittent driver signal having an on time and an off time independent of the frequency of the turn signal circuit pulsating signal, the second timer comprising;
a first timing portion for adjustably setting the off time period of the alarm driver signal; and
a second timing portion for setting the duration of the on time of the alarm driver signal; and
an audible alarm coupled to the second timer for providing an audible tone in response to the on time of the alarm driver signal.
2 Assignments
0 Petitions
Accused Products
Abstract
An indicating circuit provides an indication that a turn signal in a vehicle is activated. A timer receives an activation signal representative of the turn signal. The timer provides a reminder output signal based on the activation signal. The timer provides the reminder output signal during reminder periods which are spaced by delay time periods. The delay time periods are variable in length depending on operation of the vehicle. An indicator is coupled to the timer for providing an operator indication, based on the activation signal, indicating that the turn signal in the vehicle is activated.
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Citations
29 Claims
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1. A non-obtrusive turn signal monitor and reminder circuit for monitoring a turn signal in a vehicle and reminding an operator after a set time period, the turn signal monitor and reminder circuit comprising:
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a turn signal circuit activated to provide a pulsating signal; a converter coupled to the turn signal circuit for converting the pulsating signal into a direct current output signal while the turn signal is activated; a first timer coupled to the converter for providing a first timer output signal wherein the first timer is powered by the converter output signal, the first timer comprising; first adjustable delay means for providing a delay time period before providing the first timer output signal; and resetting means for suspending the first adjustable delay means upon the occurrence of a specified event; a second timer directly coupled to the first timer for providing an intermittent alarm driver signal in response to the first timer output signal, the intermittent driver signal having an on time and an off time independent of the frequency of the turn signal circuit pulsating signal, the second timer comprising; a first timing portion for adjustably setting the off time period of the alarm driver signal; and a second timing portion for setting the duration of the on time of the alarm driver signal; and an audible alarm coupled to the second timer for providing an audible tone in response to the on time of the alarm driver signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A non-obtrusive turn signal monitor and reminder circuit for monitoring a turn signal in a vehicle and reminding an operator after a set time period, the turn signal monitor and reminder circuit comprising:
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a turn signal circuit activated to provide a pulsating signal; a converter coupled to the turn signal circuit for converting the pulsating signal into a direct current output signal while the turn signal is activated, wherein the converter has a post-installation, operator controlled calibration circuit to calibrate the turn signal and reminder circuit; a first timer for providing a first timer output signal wherein the first timer is coupled to the converter and wherein the first timer is powered by the converter output signal, the first timer comprising; a first adjustable delay circuit for providing a delay time period before providing the timer output signal; and a reset circuit for suspending the first adjustable delay circuit upon the occurrence of a specified event; a second timer directly coupled to the first timer for providing an intermittent alarm driver signal in response to the first timer output signal, the intermittent driver signal having an on time and an off time independent of the frequency of the turn signal circuit pulsating signal, the second timer comprising; a first timing portion for adjustably setting the off time period of the alarm driver signal; and a second timing portion for setting the duration of the on time of the alarm driver signal; and an audible alarm coupled to the second timer for providing an audible tone in response to the on time of the alarm driver signal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of monitoring a turn signal in a vehicle and audibly reminding an operator after a set period of time the method comprising:
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(a) providing a turn signal monitoring circuit comprising; a turn signal circuit activated to provide a pulsating signal; a converter coupled to the turn signal circuit wherein the converter has a post-installation, operator controlled calibration circuit having a light-emitting diode and an operator accessible potentiometer; a first timer coupled to the converter for providing a first timer output signal, the first timer having a first adjustable delay circuit for setting a first adjustable delay time period and a resetting circuit; a second timer directly coupled to the first timer for providing an intermittent alarm driver signal, the second timer having a first timing portion for setting an off time period of the alarm driver signal and a seconal timing portion for setting an alarm duration on time period; an audible alarm coupled to the second timer; (b) providing a pulsating signal from the turn signal circuit while the turn signal is activated; (c) converting the pulsating signal into a direct current output signal; (d) coupling the converter output signal to the first timer means; (e) powering the first timer with the converter output signal; (f) waiting for the completion of the first adjustable delay time period; (g) resetting the first adjustable delay time period upon the occurrence of a specified event; (h) outputting the first timer output signal at the completion of the first adjustable delay time period; (i) directly coupling the first timer output signal to the second timer; (j) sounding the audible alarm for the alarm duration on time period in response to the first timer output signal; (k) disabling the audible alarm at the end of the alarm duration on time; (l) waiting for the completion of the first timing portion off time period which is substantially longer than the on time period; (m) sounding the audible alarm for the alarm duration on time period upon the completion of the first timing portion off time period; and (n) repeating the steps (k)-(n) until the turn signal circuit is deactivated. - View Dependent Claims (29)
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Specification