HARD COPY FROM TV DISPLAY

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A002700040027-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 7
• Document Creation Date: December 28, 2016
• Document Release Date: June 16, 2005
• Sequence Number: 27
• Publication Date: October 26, 1965
• Content Type: LETTER

Approved For Release 2005/06/23 : CIA-RDP78B047704A042700040027-1
26 October 1965
Attention
Subject:
Hard Copy from TV Display
based upon its extensive experience in high quality
TV recording, high resolution film scanning, processing and recording,
proposes the following system for use in individual frame recording of
a TV signal.
The proposed system as shown in Figure 1 is the minimum complement of
equipments required to achieve the desired results. This system can be
expanded, as an option, to display and record TV signals based upon
techniques other than the U. S. Standard, which are:
525 lines per frame
30 frame, 60 fields, 2:1 interlace
15,750 scan lines/second
4 me/s video bandwidth
As an additional option the film output of the proposed system can also
be fed, for roll film use, directly into a rapid film processor which
will provide a dry positive transparency of the data displayed within
approximately thirty seconds of the time of exposure on the film. The
exact time will depend on the distance between film exposure and output
of processor and the speed with which it is desired to move the film,
assuming unexposed film between exposures is expendable.
As shownin Figure 1, a 17" monitor is viewed. The observer actuates the
camera focused onto the high resolution flat face recording monitor, and
the display is recorded on Blue Sensitive Hyscan or similar film.
The camera can use roll film, cut film, film pack, and Polaroid film,
both cut and roll. The picture format on film will be 2-1/1+" x 3". The
system, as shown, will take the pictures at an exposure of 1/30 second.
If the tape playback machine is capable of repeating one frame over and
over, the camera exposure time can be adjusted accordingly.
Declass Review by NGA.
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 Approved FI,se 2005/06/23 : CIA-RDP78B04770,A0000040027-1
-2- 26 October 1965
I igh Resolution CRT used in the recording monitor will conform
to the specifications given on the attached Technical Bulletin No. CL-1180.
The system, as schematically pictured in Figure 1, can be furnished at a
fixed price cost of assuming the availability of a_GFE tape play-
biine providing a composite video signal. System delivery will be
four months after award of contract.
Very truly yours,
Manager, Program Development
Intelligence Systems Department
/ces
Attachments
Approved For Release 2005/06/23 : CIA-RDP78BO477OA002700040027-1
 STAT
Approved For Release 2005/0
12 CIALRD'78R04770AO02f018
TYPE CL-1180
CATHODE RAY TUBE
typ" CL-1180 i a sink Ic
beam, magnetic deflection and focus ci f iode rav
tube of high resolution e specially deE t,ned for
flying spot scanner appl rations. The tube (s
mounted in an assembly w th the deflec i uu yoke,
focus coil, magnetic shield and suppor mousing.
-l he tube features an efficient: electron t u"1 which
can be modulated with sn all changes r resole
tion, a fine grain. P16 phosohor screen rhi.ch has
been optimized for low fix( 1 noise and imaximum
brightness, and a high performance defl? "ion arid
focus system which is ali} ned and fix( c' requir
ing a minimum of operrting and it=,'allation
adjustments.
ELECTRICAL
Deflection yoke
Resistance, each winding (half axis)
Inductance, each winding (half axis)
Focus coil
Resistance
Inductance
OPTICAL
Phosphor
P16
Fluorescence
Violet
Persistence
Extremely short
Faceplate
Clear, non-browning, flat within 0.003 in.
MECHANICAL
Overall length
20% in. nom
Overall diameter (including flange)
7 in. nom
Minimum useful screen diameter
4.25 in.
* To meet customer requirements
STAT
STAT
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 Approved For,R.Release 2005/06/23 : CIA-RDP78BO477070A~700040027-1
Heater voltage
b.3_+_10%
Vac
Accelerator (anode) voltage
30,000
Vdc
Accelerator (anode) current, peak
20
pa
Grid No. 1 voltage
Positive
-0
Vdc
Negative
-150
Vdc
Heater to cathode voltage, peak
180
vdc
Deflection coil input voltage, peak
500
vac
Grid No. 1 resistance
1.5
Meg Q
Electrode capacitance
Grid No. 1 to all other electrodes
50
pf
Cathode to all other electrodes
50
pf
Anode to all other electrodes
500
pf min.
Heater voltage (note 1)
Heater current
Accelerator voltage (note 2)
Grid No. 2 voltage
Grid No. 1 voltage for cut-off (note 3)
Grid No. 1 modulation voltage (note 4)
Light output (note 4)
Light output uniformity
Shading (note 5)
Noise (note 5)
Resolution (notes 4 and 6)
Focus coil excitation
Deflection coil current for spot centering (each axis)
Deflection factor
Spot size (sigma value)
Deflection axis alignment
Deflection defocusing
* Depends on coil
6.3 Vac
0.45?10% Aac
25,000 Vdc
1000 Vdc
-60 to -20 Vdc
15 Vac max.
0.4 ItW/cm"
10 % max.
2 % rms max
See chart - Resolution
characteristic
700 amp-turns
mAdc max.
A/in.
..0008 inches max
t_ 1 degree
1.8:1 max.
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 Approved For Release 2005/06/23 : CIA-RDP78BO477OA002700040027-1
118 11) CONNFCIOR
-! (fl I I (Fl \\
NOTES: Values given are nominal unless otherwise indicated.
1. It is preferable not to operate the heater
negative with respect to the cathode for long
periods of time under severe environment con-
ditions.
5. Measured by scanning the phosp wcr with a
spot of the minimum resolution cha acteristic
and observing the light output witF
in S-11
response photomultiplier. Not mor(
an 15
2. External conductive coating connected to
Eb supply return.
3. Visual extinction of focused, undeflected
spot.
4. Beam current of 10 IiA (Cathode current
less leakage).
noise pulses of 50% amelitude will oc :!ut in the
useful screen area.
6. As measured by the sr annertechni 1;.w using
a square wave transmission test obj~ ct whose
half period is the statei fraction of the scan
length. The modulation esulting fron the tube
spot size will be a given percentat,e of the
"black" to "white" ampl tude.
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 Approved For Release 2005/06/23 : CIA-RDP78BO477OA002700040027-1
20%
I
1/4 DIA.-- 8 HOLES - EQUAL I_Y SPACED
6%2 IN. DIAMETER BOLT CIR(LE
STAT
60
50
40
500 1000 2000
RESOLUTION (TV ELEMENTS/SCAN)
WHITE
A
}
BLACK
MODULATION (%) =A x 1O[1%
Approved For Release 2005/06/23 : CIA-RDP78BO477OA002700040027-1
 Approved For Release 2005/06/23 : CIA-RDP78B04770A002700040027-1
GFE
MAGNETIC
TAPE
PLAYBACK
composite
video signal
5" RECORDING
MONITOR
17 "
VIEWING
MONITOR
CAMERA
ACTUATOR
RECORDING
CAMERA
FIGURE I. PROPOSED SYSTEM BLOCK DIAGRAM
Approved For Release 2005/06/23 : CIA-RDP78B04770A002700040027-1