TELEVISION CAMERA

Patent №

US 5,293,238

Granted

1994-03-08

Filed 1992

Owner

HITACHI, LTD.

Lab

AI components

1

vision

Assignment

Recorded

Dataset

AIPD

2023_r1 edition

Application

07899250

Flicker which occurs when a television camera images an object under illumination of a flickering light source such as fluorescent lamp is minimized without causing sensitivity of a photoelectric conversion element and hence the camera to be degraded under a non-flickering light source. The television camera includes an automatic iris control device, an automatic gain control circuit, a microcomputer, a photoelectric conversion element and an integration circuit for integrating output signal of the photoelectric conversion element for each field period. The microcomputer sets a signal storage time of the photoelectric conversion element to a value by which flicker noise can be restricted when flicker is detected on the basis of a change of an output signal of the integration circuit and sets it to another value when a change of light source is detected on the basis of a change of iris value and gain.

VisionH04N 23/745H04N 23/70H04N 23/72Y10S 348/91

AI classification

Vision0.82
Natural language0.00
Machine learning0.00
Speech0.00
Knowledge representation0.00
Evolutionary computation0.00
Planning0.00
AI hardware0.00

Ownership

HITACHI, LTD.

assignment · 61800435

Assignors

NAKANO, TAKAHIRO, IMAIDE, TAKUYA

On an employer assignment, the assignors are typically the inventors.

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