RAMP WAVE OUTPUT CIRCUIT, ANALOG/DIGITAL CONVERSION CIRCUIT, AND CAMERA
First Claim
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1. A ramp wave output circuit, comprising:
- a ramp wave generation circuit generating a ramp wave; and
a low-pass filter having a variable cutoff frequency, which receives the ramp wave, whereinthe low-pass filter operates at a first cutoff frequency for a predetermined time period after the receipt of the ramp wave, and operates at a second cutoff frequency, which is larger than the first cutoff frequency, after the predetermined time period has passed.
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Abstract
A ramp wave output circuit includes a ramp wave generation circuit generating a ramp wave, and a low-pass filter having a variable cutoff frequency, which receives the ramp wave. The low-pass filter operates at a first cutoff frequency for a predetermined time period after the receipt of the ramp wave, and at a second cutoff frequency, which is larger than the first cutoff frequency, after the predetermined time period has passed.
31 Citations
8 Claims
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1. A ramp wave output circuit, comprising:
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a ramp wave generation circuit generating a ramp wave; and a low-pass filter having a variable cutoff frequency, which receives the ramp wave, wherein the low-pass filter operates at a first cutoff frequency for a predetermined time period after the receipt of the ramp wave, and operates at a second cutoff frequency, which is larger than the first cutoff frequency, after the predetermined time period has passed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification