Picture adjustments in CCTV cameras - OSD functions.
First CCTV cameras usually did not have any regulators. Later there were introduced control elements allowing modification of some parameters, e.g. switching on/off electronic shutter, BLC (Back Light Compensation), AWB (Auto White Balance) etc. with microswitches placed on the camera case.
These days the increasingly popular method of camera adjustment involves OSD (On-Screen Display). It eliminates the need of implementing an array of microswitches and potentiometers that we can sometimes see in more advanced models.
An advanced OSD system has been implemented, for example, in the SN-586C/B M11208
camera with DSP sensor, made by Pixim. All picture parameters are adjustable with the use of buttons situated on the rear panel of the camera case.
The manufacturer has enabled the user to save camera settings in the memory, to preset the camera before on-the-spot calibration.
The user has full control over all parameters, from video norm, through AWB, ES, BLC, Gamma, ...., to specific settings connected with WDS (Wide Dynamic Sensor).
The camera has a lot of advanced options that are not accessible in other models:
- D/N Control - setting the threshold of Color to B/W switching and vice versa,
- privacy zones - possibility of concealing some parts of the image (with black area),
- motion detection - additional information on the screen after the image has changed,
- mirror - mirror image,
- title - camera name.