초록 ▼

A gating circuit and method for controlling the output of data from the scanner of a heat detector in response to a bi-polar signal indicating the presence of an object within the scanning window of the heat detector; stores the data output; senses the stored data with respect to a reference signal

A gating circuit and method for controlling the output of data from the scanner of a heat detector in response to a bi-polar signal indicating the presence of an object within the scanning window of the heat detector; stores the data output; senses the stored data with respect to a reference signal with a differential amplifier responsive to the data output; gates the data output to storage by a first gate interconnecting the data output with the differental amplifier; generates control signals for opening and closing the gate with different states of the bi-polar signal for controlling the gate such that the reference signal represents the last immediate data output; detects the difference between the stored peak value and the highest data value of the output data subsequent to turning off a first gate; and using a second gate interconnecting the output of the sensor with the detector and controlled by the control signals to be open with the first gate closed and closed with the first gate open.

대표청구항 ▼

A gating circuit for controlling the output of data from the scanner of a heat detector in response to a bi-polar signal indicating the presence of an object within the scanning window of the heat detector, comprising: means for storing said data output; means for sensing the stored data with respec

A gating circuit for controlling the output of data from the scanner of a heat detector in response to a bi-polar signal indicating the presence of an object within the scanning window of the heat detector, comprising: means for storing said data output; means for sensing the stored data with respect to a reference signal and including a differential amplifier responsive to said data output; means for gating said data output to said storing means and including a first gate interconnecting said data output with said differential amplifier; means responsive to said bi-polar signal to generate control signals for opening and closing said gate with different states of said bi-polar signal for controlling said gating means such that said reference signal represents the last immediate data output; means for detecting the difference between the peak value stored in said storing means and the highest data value of said output data subsequent to turning off said first gate; and said gating means further including a second gate interconnecting the output of said sensing means with said means for detecting and controlled by said control signals to be open with said first gate closed and closed with said first gate open.