Title:
【考案の名称】ディジタルカメラのデジタル及びアナログ兼用回路
Document Type and Number:
Japanese Patent JP2558669
Kind Code:
Y2
Abstract:
A digital camera for processing a digital signal. The camera includes an image signal processing circuit which uses a low-resolution analog-to-digital converter. The processing circuit performs AGC and gamma control on both digital and analog signals. Gain control and gamma control are performed by auto gain controllers which either process an analog signal prior to converting the analog signal to a digital signal or after the analog signal is converted to a digital signal. The image signal processing circuit performs processing based on the output of one of a m-bit output of an AGC/gamma controller and a m-bit output of an A/D converter. The AGC/gamma controller receives an n-bit clamped image signal from a clamper, while the m-bit A/D converter receives an analog input. This selection operation minimizes the need for a high-resolution A/D converter.
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Inventors:
Kim Naru
Application Number:
JP8117092U
Publication Date:
December 24, 1997
Filing Date:
November 25, 1992
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
H04N5/14; G03B19/00; H04N5/202; H04N5/243; (IPC1-7): H04N5/14; H04N5/243
Attorney, Agent or Firm:
Tadahiko Ito (1 outside)