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Using a Java Viewer to Transmit Video Images
Java Viewer Parameters
You can specify applet parameters to provide an applet tailored to modify the behaviour or appearance of
applets. Refer to the table below to ensure that you thoroughly understand the parameters.
LiveApplet
Parameter Name
Omissable
Use this parameter to set the background color. The parameter specification format is
"#RRGGBB" (values between 0 and 255 for each component color expressed as a hexadecimal).
bg_color
Yes
Eg. White: "#FFFFFF", Grey: "#AAAAAA", Green: "#00FF00"
If this parameter is omitted, the default background color is used.
You can use this parameter to specify the screen displayed in the video display
close_image
window at the time of disconnection. Specify the name of a JPEG or GIF file. If this
Yes
parameter is omitted, the default disconnection screen is displayed.
This parameter specifies the comment text string displayed as an overlay on the applet
comment
Yes
(alphanumeric characters only). If this parameter is omitted, no comment is displayed.
Specifying "false" in this parameter displays a GUI with no camera control functions.
controllable
Yes
Specify "true" or "false". The default value is "true".
This parameter specifies the host name displayed in the applet (alphanumeric characters only). This value is used as
hostname
Yes
the host name in messages displayed during connection, etc. If this parameter is omitted, no host name is displayed.
Selects English or Japanese as the language used to display error messages and camera preset names.
locale
Yes
Specify "japanese" or "english". The default setting is "japanese". However, if "japanese" is specified
when the browser or operating system does not support Japanese text display, English is used.
You can use this parameter to specify the screen that appears in the video display
open_image
Yes
window until the first video image appears. Specify the name of a JPEG or GIF file. If
this parameter is omitted, the default startup screen is displayed.
When a startup screen is specified in the "open_image" parameter, this parameter specifies the display time.
open_image_time
Yes
The time is specified in milliseconds (1/1000 sec.), and the default value is 0. When the value is 0, the image
is displayed until the first video frame appears. Values from 0 to 30000 (30 seconds) can be specified.
This function specifies whether the Snapshot button is displayed. Specify "on" or "off". The
show_capture
Yes
default value is "on". The button is always displayed unless "off" is explicitly specified.
show_comment
Yes
This function specifies displays the comment as an overlay on the video image. Specify "on" or "off". The default value is "off".
show_counter
Yes
This function displays the frame count as an overlay on the video image. Specify "on" or "off". The default value is "off".
show_fps
This function displays the frame rate as an overlay on the video image. Specify "on" or "off". The default value is "off".
Yes
This function displays the host name as an overlay on the video image. Specify "on" or "off". The
show_hostname
Yes
default value is "off". Note that this parameter is only valid if the "hostname" parameter is specified.
Specify whether or not to display the panorama window pop-up button. The button
show_panobutton
Yes
will be displayed only when "on" is specified explicitly.
This function displays a bitmap image as an overlay on the video image. Specify the image using the "bitmap-filename,x,y"
superimpose
Yes
format. Use the GIF format for bitmap images (transparent GIFs supported). The "x,y" parameters specify the coordinates
of the bitmap image position on the video frame. If "x,y" is omitted, the image is displayed in the center of the video frame.
Specify the URL of the HTTP server for applet access. Specify the IP address and
url
No
port number that match those specified in the codebase attribute.
This parameter specifies the video image display size (in pixels). Specify the width. The
video_width
Yes
display sizes are 80 to 640, and any value can be set as the width. The height is
calculated as 3/4 of the specified width. Eg. video_width="240" (height = 240 x 3/4 = 180.)
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Description
Glimpse
Parameter Name
Omissable
This parameter specifies the comment text string displayed as an overlay on the applet
comment
Yes
(alphanumeric character only). If this parameter is omitted, no comment is displayed.
This parameter specifies the host name displayed in the applet (alphanumeric character only). This value is used as
hostname
Yes
the host name in messages displayed during connection, etc. If this parameter is omitted, no host name is displayed.
show_counter
Yes
This function displays the frame count as an overlay on the video image. Specify "on" or "off". The default value is "off".
This function displays the host name as an overlay on the video image. Specify "on" or "off". The
show_hostname
Yes
default value is "off". Note that this parameter is only valid if the "hostname" parameter is specified.
This parameter specifies the interval (in milliseconds) at which the screen is updated. If
this parameter is omitted, the screen is updated at 5-second intervals. Because the
sleep
Yes
Glimpse applet is designed to be used for displaying multiple sites as a list, this
parameter is provided as a means of reducing the processing load. Intervals between 0
and 300,000 ms (5 minutes) can be set. If 0 is specified, the interval is not adjusted.
Specify the URL of the HTTP server for applet access. Specify the IP address and
url
No
port number that match those specified in the codebase attribute.
Applet Tag Descriptions
Parameter Name
Omissable
This parameter specifies the applet file name. Enter "LiveApplet.class" or
code
No
"Glimpse.class". If this parameter is not specified correctly, the applet (LiveApplet or
Glimpse) is not downloaded.
This parameter specifies the directory that contains the applet.
http://HTTP server IP address: port number/directory/
If this parameter is not specified correctly, the applet (LiveApplet or Glimpse) is not downloaded.
codebase
No
Directories are fixed for each applet.
Directory (LiveApplet)=-wvdoc-01-/LiveApplet
Directory (Glimpse)=-wvdoc-01-/Glimpse
This parameter specifies the size of the area acquired for the applet (in pixels).
For LiveApplet, if the value specified is smaller than the LiveApplet drawing area, the applet may not
be displayed correctly. If the camera control function GUI is to be added (controllable=true), add
width
No
about 130 to the value. Eg. For an image size of 320 x 240, width=450.
For Glimpse, because the areas used for the applet and for the video display are the same size,
specify the same value as the image width. Eg. For an image size of 320 x 240, width=320.
As for width.
height
No
For LiveApplet, add around 140. Eg. For an image size of 320 x 240, height=380.
For Glimpse, specify the same value as the image height. Eg. For an image size of 320 x 240, height=240.
archive
Specify LiveApplet.zip or Glimpse.zip to comply with the applet type.
Yes
Using a Java Viewer to Transmit Video Images
Description
Description
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Troubleshooting
