NCJ Number
107239
Journal
Security Volume: 24 Issue: 7 Dated: (July 1987) Pages: 110-114
Date Published
1987
Length
5 pages
Annotation
A new breed of closed-circuit television cameras, using solid-state chips instead of cylindrical tubes, is bringing advances in camera compactness, durability, and distortion resistance.
Abstract
Chip cameras, ranging in price from $700 to $2,000, offer buyers a number of choices in size, power, and resolution. These cameras use three types of chips. Charged injection devices are the most expensive and best handle high light overload. Charge-coupled devices are also strong in performance and are best at lower light levels. Metal oxide semiconductors are least costly. The pixel count among chip cameras varies, providing different levels of picture resolution. Chip cameras require more light than tube cameras and need less light for black-and-white pictures than for color ones. These cameras are available in 12-volts direct current and 24-, 120-, and 240-volts alternating current models. In addition, they have internal timing generators to lock the cameras to one frame-scanning cycle. Photographs.