EN25
Description of Progressive Scan CCD
Progressive Scan is a special image sensing method which, unlike conventional interlace scanning, is able to pick up all the lines of picture information in one Scan. Since the Progressive Scan CCD is capable of outputting 60 full Frames* per second — twice the amount of conventional systems — it is able to deliver a high quality picture even when its output signal is converted to a format that can be viewed on a TV screen.
*A NTSC TV screen image is composed of 30 Frames per second. 1 Frame is made up of 2 Fields.
1 Frame
Scan A | Scan B | |
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1. Regular shooting of moving images
Records 30 odd and 30 even image Fields, for a total of 60 per second. Since there is a time lag between an odd and even Field, when they are combined to make 1 Frame the part of the image that is moving appears as image jitter.
However, during normal playback, the moving picture looks smooth and natural.
2. Progressive mode shooting of moving images (Progressive Mode Recording ☞ pg. 24)
Scan A is recorded, divided into an odd- and
Since each recorded odd- and
RECORDING
Scan A | Scan B |
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Scan C | Scan D |
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| 30 Frames per second | |||||||||
Field | Field |
| Field | Field | ||||||
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