Image pick-up apparatus and image pick-up system
First Claim
1. An image pick-up apparatus comprising an area sensor in which sensor elements are two-dimensionally arrayed on a substrate, and a reference supply circuit for supplying a reference voltage for driving of said area sensor, wherein said reference voltage is supplied through a low-pass filter (LPF) coupled to said reference supply circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
There are provided image pick-up apparatus and an image pick-up system constructed to prevent occurrence of random noise in a photographed image due to a random noise component produced in a reference supply circuit. An image pick-up apparatus has an area sensor driven by matrix driving, and a reference supply circuit for supplying a reference voltage for driving of the area sensor, and the reference voltage is supplied through a low-pass filter (LPF) 103 coupled to the reference supply circuit. Further, a cutoff frequency of the low-pass filter is determined so that an effective value of noise of the reference voltage having passed through the low-pass filter becomes not more than one tenth of an effective value of random noise produced in pixels of the area sensor.
21 Citations
18 Claims
- 1. An image pick-up apparatus comprising an area sensor in which sensor elements are two-dimensionally arrayed on a substrate, and a reference supply circuit for supplying a reference voltage for driving of said area sensor, wherein said reference voltage is supplied through a low-pass filter (LPF) coupled to said reference supply circuit.
Specification