PTZ Design Specification

 

VERSION V1.0.00

Version Date Description
V1.0.00 2008/04/02
  • Document created

 


 

Description

There are two modes of handling PTZ commands in PTZ and Speed dome camera. They are Transparent Mode and Parser Mode.

Transparent Mode

There is a virtual transparent tunnel to carry serial data stream between the remote controller and the analog PTZ camera. In a video encoder, it forwards the serial data stream without any modification to the remote controller and the analog PTZ camera. In a PTZ or speed dome camera, it translated the serial data stream based on pre-defined PTZ protocol to its PTZ controller to perform the pan, tilt and zoom movement.

The serial data stream will be carried by the ACTi's control session or SERIAL_HEX URL commands.
The following figure illustrates an example of how serial data stream (PTZ command) is forwarded to analog speed dome by a video encoder.

Parser Mode

The device transfers the URL commands in text format to serial data string and send to the analog PTZ camera or response the URL command directly. The PTZ vendor and protocol have to assigned by PTZ_VENDOR URL command before the device performed the PTZ parser function.

For a video encoder, the address of the analog PTZ camera has to be assigned by ADDR URL command. The following figure illustrates an example of how PTZ URL command) is translated to serial command string to analog speed dome by a video encoder.

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HOME, PTZ URLs in ENCODER CGI