Sony XC-77RR/77RR-CE Bedienungsanleitung Seite 18

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White micro spots
At high temperatures, a lot of small white spots may appear on the
screen when you shoot a dark object.
The interiine-transfer organization of the CCD Image
sensors
The XG-77RR/77RR-CE GCD video camera module adapts an
interiine-transfer organization in which precisely aligned
photosensors and vertical shift registers are arrayed interlinearly
and a horizontal shift register links up with the vertical shift
register, as shown. Light variations are sensed by the
photosensors, which generate electronic charges proportional to
the light intensity. The generated charges are fed into the
vertical shift registers all at once. The charges are then
transferred from the vertical shift registers to the horizontal shift
registers successively and finally reach the output amplifier to be
read out successively.
Photosensors
Output
amplifier
^
r ^
= ^
Vertical shift
!S-| registers
(GCD)
Horizontal shift registers (GGD)
Pickup device
Pickup device Interiine transfer GGD
Picture elements XG-77RR: 768 (H) x 493 (V)
XG-77RR-GE: 756 (H) x 581 (V)
Sensing area 8.8 x 6.6 mm (the same size as the 2/3-
inch camera tube)
Optical blank XG-77RR: 50 pixels each horizontal line
XG-77RR-GE: 60 pixels each horizontal
line
GGD vertical drive frequency
XG-77RR: 15.734 kHz ± 1 %
XG-77RR-GE: 15.624 kHz ± 1 %
GGD horizontal drive frequency
XG-77RR: 14.318 MHz
XC-77RR-CE; 14.1875 MHz
Signal system XG-77RR: EIA standard
XC-77RR-GE: GGIR standard
Cell size XG-77RR:11 ( H ) x 1 3 ( V ) ^ m
XC-77RR-GE: 11 (H) x 11 (V) nm
Chip size 10.0 (H) x 8.2 (V) mm
Optical and others
Lens mount
Flange focal length
Sync system
G mount
17.526 mm
Internal/External, selectable with the
internal switch
S, VBS, VS (sync level: 0.3 Vp-p ±6 dB)
HD and VD (sync level: 2 to 5 Vp-p)
External sync frequency tolerance
± 1 % (to horizontal sync frequency)
Jitter Within ±50 nsec
External sync input