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(7-7) Description of menu display by OSD (On Screen Display)
This camera is equipped with the OSD function of superimposing a
character information on the output digital image signal. Using this function,
the current setting status of the camera can be displayed over the image of
the capture board in menu-driven form.
The menu display allows the user to quickly gain an understanding of the
current settings at a glance. Furthermore, if the contents of the menu
display are captured and saved before collecting data using the camera,
they serve as useful information to be referred when comparing data or
setting additionally introduced cameras.
● Requirement for menu display
The menu display requires a system that is capable of updating the
captured image constantly responding to the timing of the image signal to
be output from the camera on the demonstration software for image display
or on the user's application software.
The display area of OSD is located on the upper left on the entire area of the captured image, and therefore this system
must be additionally capable of displaying this menu on the screen.
● Display in the asynchronous shutter operation
When the asynchronous shutter mode is set for the camera, the repetitive asynchronous shutter operations are
automatically made at certain intervals to automatically refresh the image so that the menu display is updated. During
this process, the externally input trigger signals are ignored.
(Note) If the menu display is set to be on in the asynchronous shutter mode, the repetitive trigger (cyclic trigger) that is
generated inside the camera is automatically input. Make sure to set the menu display off when the camera is
used in the normal conditions (enabling external trigger input in online state). The external trigger signal (Vint) is
ignored if the menu display is set to be on.
(Note) Note that the difference between the pulse width generated by the camera with the menu display turned on and
that provided by the user unit results in the difference in the brightness of image (shutter speed) between those
when the asynchronous shutter operation in the pulse width control mode is set (S.FORM=ASYNC/HIGH,
PWC=ENABLED).
● ON/OFF operation of menu display
OSD menu is set to be on as a factory default.
ON/OFF operation of the menu display is done using the serial communication command.
[ON/OFF switching procedure]
Set CR(0) (bit 0 of configuration flag) to 1 (OFF) or 0 (ON) following the procedure below.
① Read out the current CR data.
Transmit the command "RMC" and acquire the return data.
→ Refer to (7-5)
[Example]
Right figure shows the example of transmitting the command
using the direct command input of TAKENAKA's
communication software for evaluation (FCTool)
It turns out that
CR=H'0008
From this return data
CR(0)=0 and OSD menu display is set to ON now.
② Change the least significant bit of CR data to 0(OFF) or 1(ON)
and rewrite the camera setting.
After having changed CR(0) which was read in procedure
to 1 or 0, transmit it to the camera by "WMC" command.
[Example]
In the "CR=H'0008"case above, menu setting is changed from ON to OFF by rewriting the camera setting with CR(0)=1.
Write the new data "CR=H'0009" setting CR(0) to 1.
"WMC" command is transmitted by the direct command input of FCTool In the right figure.
(Note) The above procedures
window , when using FCTool.
to
can be performed by clicking "MENU OFF" or "MENU ON" button on the main
①
③
- 31 -
OSD display area
Entire area of captured image
Display layout of OSD
①
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