73
Description
To get a frame of a new image.
Parameter CH:
Fixed Input, Random Input mode:
Ignored (or can be omitted)
Multi Input mode: Essential
Push mode image get command for Netscape
Parameter CH:
Fixed Input, Random Input mode: Ignored (or
can be omitted)
Multi Input mode: Essential
Channel for converting %c: Essential
Name of files to be converted: Essential
Parameter
1-4
1-4
1-4
File name
Parameter name
CH
CH
CH
FILE
URL
/cgi-bin/camera
/cgi-bin/push
/cgi-bin/chconv
CGI item
Pull mode
image get
Push mode
image get
Channel No.
conversion
(See page 79.)
CONTROL BY HTML DESCRIPTION
Image display, camera operation, and alarm image display can be effected on the WWW browser by means of commands
described in the HTML (Hyper Text Mark-up Language) file. The WJ-NT104 employs CGI (Common Gateway Interface) to
carry out these functions. When using a function, the following syntax is used.
Syntax: http://<IP address >/<CGI function>?<Parameter>=<value> [&<Parameter> = <value>...]

■Image Display

●CGI function for image display

<HTML>
<HEAD>
</HEAD>
<BODY BGCOLOR=”#FFFFCC”>
<CENTER>
<SCRIPT LANGUAGE=”JavaScript”>
var myDate = new Date();
var tmpImg = new Image(%W,%H);
width=%W
height=%H
function drawcamera() {
document.CamImg.src=this.src;
}
function loadcamera() {
myDate = new Date();
tmpImg.src = “/cgi-bin/camera?CH=%c&PAGE=”+ myDate.getTime();
tmpImg.onload = drawcamera;
tmpImg.onerror= drawcamera;
}
document.write(“<IMG SRC=/cgi-bin/camera?CH=%c&PAGE=”+myDate.getTime()+” NAME=CamImg
onLoad=\”TimerID=setTimeout(‘loadcamera()’,%i);\” onError=\”TimerID=setTimeout(‘loadcamera()’,%i);\”
WIDTH=”+width+” HEIGHT=”+height+ “ VSPACE=5></A>”);
</SCRIPT>
</CENTER>
</BODY>
</HTML>
z

●HTML Sample File [mainview1.html]

zThis is a function to call new images by means of JavaScript.
xThis is a time interval (msec) to be converted by %i, requesting a new image in pull mode (see page 79). The page num-
ber of the argument is added for nullifying the cache.
x