OPERATION
TM-1300 Progressive Scanning High Resolution Camera
Page 15
captures the image (Fig. 5). The captured image is kept until the next pulse is applied for the next
image. If the switch is at normal mode (manual shutter mode), the video output is real time with
manual shutter.
2.
Integration
Activate EN INT (Enable Integration) of mode selection #8 by pushing down the switch then input
INTEG control (#11 of 12-pin connector or #21 of 31-pin connector) as active low (TTL). When it
is low, the TM-1300 keeps integrating and, upon the rising edge of the INTEG control pulse, it
captures the frame and keeps it until next end of integration. When EN INT is high (open), video
output is in real time without freezing and one frame of the integrated image appears upon ending
of INTEG control pulse (during INTEG control low, it keeps the previous image but when INTEG
is high it only holds one frame). FDV (Field) Data Valid) is disabled during the integration and the
vertical pulse starts when the image is output.
3.1.3 (b) Progressive Scanning
The TM-1300 uses a state-of-the-art CCD called a “Progressive scanning interline transfer CCD” which
scans all lines sequentially from top to bottom at one frame rate (12 Hz). Like a non-interlace computer
screen, it generates a stable crisp image without alternating lines and provides full vertical TV
resolution of 1000 lines (a monitor display may not be able to show 1000 lines due to monitor resolution
and interlace scanning of the analog output). The interline transfer architecture is also important to
generate simultaneous shuttering. This is different from full frame transfer architecture which requires a
mechanical shutter or strobe light in order to freeze the object motion.
The TM-1300 outputs the progressive scanned image with an electronic shutter in two different formats:
1.
Progressive scanning digital output
The CCD signal goes through A/D converters. The frame memory is capable of capturing async and
integration video without having special frame grabbers. 10-bit digital output is available from 31-
pin connector with EIA-422 format (20 MHz clock rate).
2.
Non-interlace scan analog output
The TM-1300 outputs non-interlace video for SVGA monitor display. The digital output of 31-pin
connector is also at 12 Hz with a 20 MHz pixel clock (progressive scan).
3.1.4 Video Output
3.1.4 (a) Async Reset Image Capture
With built-in memory, an image can be captured when VINIT pulse is applied. The captured image will
be continuously scanned out until the next VINIT pulse occurs. (Ref. Figure 3, pg. 11).
3.1.4 (b) Built-in Memory for Integration Image Capture
With the Freeze Enable with mode #8 (push down), set the integration control (pin #11) to low for
integration. Integrated video can be captured once integration control goes back to high. Upon rising
edge of integration, the image is transfered (SG) 9H later.
