PULNiX America, Inc. Industrial Products Division Introduction to "Video 101" September 1992 By K.
Table Of Contents Introduction 1 CCD 1 Types of CCD Arrays 1 CCD Size Format 2 Video Format 2 Video Timing 2 Interlace & Non-interlace Video 3 Camera Features 3 Lens Mounts Tripod Adapter Camera Back End Internal Features 4 Shuttering Integration Async Reset Internal Adjustments 5 AGC Gamma AWB Frame Mode Field Mode Intensified CCD Cameras 5 Lenses 6
Introduction Charge Coupled Device This guide titled Video 101 was prepared by the request of a handful of Sale Representatives for PULNiX America. The request was brought to our attention at the 1992 National Sales Meeting in San Francisco, California. Pixel Vertical Shift Register This guide is intended for "New Comer's" to the video world. Also to the new Rep's and Distributors who come aboard with no prior knowledge of PULNiX video products. This guide is designed to be "low tech.
pixel area is closer together because there is no shift register between each vertical row of pixels. This will make a difference in some video applications. CCD Aspect Ratio Horizontal 4 Part V e r t 3 Part i c a l Frame Transfer CCD Imager Pixel CCD CCD Video Format Storage Area To understand the format that a video camera will output to the outside world we need to look at a few standards that various committee's have set.
Camera Features RS-170 Composite Video At this point we will get into more of the specific functions that are applicable to PULNiX's video line. Vertical Pulse Field No. 1 (Odd Field) 16.7 ms (59.94Hz) Field No. 2 (Even Field) 16.7 ms (59.94Hz) 262.5 H 262.5 H Lens Mount Again the best place to start is at the front end. The front of the camera is where the lens will be attached. The two most common type of mounts are the bayonet and the Cmount.
The 12-pin connector provides connections for power (+12V DC) and composite video. If the camera model is a RGB camera such as the TMC-74 it will provide a separate line for each video color (RGB). The 12-pin connector is also where the external sync input is located. faster the shutter speed. Many machine vision applications require shuttering because typically during an inspection process the object is moving. When shuttering at higher speeds, higher intensity lighting may be required.
Internal Adjustments The majority of PULNiX cameras have internal adjustments to enhance the video signal for various applications. A few of our cameras have some external control switches available such as the TM-7CN and TM-7EX cameras. AWB Auto white balance feature is available on the color cameras only. The auto white balance adjusts the white or the reference color level. White comprises all primary colors (RGB). By powering up the camera, the AWB is reset.
in which the fiber is attached from the intensifier directly to the CCD. The second method is the lens relay which uses lenses to converge the scene from the intensifier to the CCD. Both methods have benefits specific to a type of application. In general, the fiberoptic type has better light transmission and resolution. The lens coupled type costs less and holds up better in rugged environments. H&V FOV H = Horizontal Height Top View θ H = view angle A few of the intensifiers have gating capabilities.
