Redlake MASD 1.4i, Руководство пользователя

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REDLAKE MASD, INC.
4.9.2 Frame Timing
The FRAME ENABLE signal is FALSE while the array is exposed. The duration of this low state
is variable and includes the user defined exposure time.
A complete frame of video data is transferred to the camera outputs while FRAME ENABLE is
TRUE. The camera takes 145 milliseconds to transfer a complete image from the sensor array to
the output. FRAME ENABLE will be low while the camera is idle and while the camera is
exposing.
The first pixel that is output in the frame transfer sequence is the pixel that belongs in the upper
left-hand corner of the video display. Each row of video data is output from left to right and the
rows are presented from top to bottom. The last pixel of the frame is placed in the lower right
hand corner of the video display.
The video is transferred by shifting each row up one row. The top row is shifted into a register
that performs the parallel to serial conversion as it outputs the video data. The LINE ENABLE
signal is held high for the time that it takes to output one row of video. The line data valid signal
has a period of 139.4 µsec and runs continuously even if there is no video to be output.
Figure 4-10. Frame Timing (Continuous Mode) Waveform
91000050-002 Revision A 4-12 10/01/01