Hard work of computer programmers will allow to introduce in short time a number of automatic procedures:
- Advanced Motion Detection - resistance to disturbances (change of light, various weather conditions, shadows, reflections etc),
- Losing Detection - detection of left objects,
- Motion Tracking - tracking of moving objects,
- Facial Detection - recognition of people,
- Vehicle Identification - identification of license plates,
- Object Persistence - analyzing persons/objects that are a long time in the field of view,
- Fire Detection,
- People Counting,
- Traffic Flow,
- Action Analysis - scuffles etc,
- Flow Control - of crowds of people (at stadiums etc),
- Attention Control - analysis of the time that people spend observing an object (exhibitions, shop windows etc).
The second diagram shows flexibility of modular solution - e.g. if some users do not need second satellite signal, some multiswitches can be omited.
Modular installation ensures maximum flexibility, allows to provide chosen signals to different parts of the apartment and configure the set of signals provided to individual outlets according to the needs of the residents. It is especially recommended when the people have different requirements. The costs can be divided proportionally to the real expenses on the implementation of different solutions.
The M1670 receiver has four inputs (4 channels).
Video signal and audio signal transmission via twisted-pair cable with power option (pdf) - description of devices (so far in Polish) and installation diagrams.
The device is an equivalent of similar analog control units. It is equipped with 12 programmable keys which can control functions of any PTZ camera (e.g. zoom, pan or tilt action, or return to the previously defined position). Due to USB interface it is a Plug &Play device - Windows OS will automatically detect it and install proper drivers.
Installing the drivers provided by the manufacturer, the operator can control the system with mouse pointer. The K9153 control unit can cooperate with e.g. Alnet Netstation K3204, K3208, K3212, K3216, K3232, NUUO K3108, ACTi NVR 32 K3032, as well as free software for ACTi (NVR 16) and Pixord (P6032) cameras. Additionally, thanks to high quality and precision, the device can be employed by "professional" computer players as an advanced joystick.
In local networks there is no problem with video transmission. But in the case of Internet connectivity, the link should either have large capacity or the quality of transmitted video has to be adequately reduced. It is also important to use effective video compression.
The KPD video recorders have been specially prepared for network operation. The KPD-604PL M8504 (4 channels), KPD-608PL M85078 (8 channels), and KPD616PL M8616 (16 channels) enable the user to define two different resolutions. The first one, for local recording, is set for getting good quality of recorded material, whereas the second, lower resolution, is adjusted to the capacity of the link. An important feature of the KPD series is use of MPEG4 compression for video transmission. It allows to get better quality of the images than e.g. in popular CPD DVRs that use MJPEG compression.
MJPEG or MPEG-4 in IP CCTV cameras?
Another important parameter of RF connector is attenuation. Apart from mismatch loss (characterized by VSWR) it includes the losses in the dielectric and conductor. Generally, the attenuation coefficient is between several thousandths and several hundredths of a decibel.
Similarly to VSWR, the losses are specified for certain frequency / frequencies or given in the form of characteristics. For example, BNC connector attenuates a 3 GHz signal by 0.2 dB. Microwave connectors, e.g. SMA, are described in this aspect by the functional 0.06*SQRT(f[GHz]), e.g. at 4 GHz the attenuation of SMA connector is 0.06*2 = 0.12 dB. The testing frequency is 6 GHz.
Limit frequency [GHz]
WA-2204C N2647 can support even eight WDS nodes. Using as the router e.g. TL-R860 N2990, it is possible to allow / deny access to the Internet for individual users identified by MAC addresses, as well as to filter URL addresses and protect the network behind the firewall.
MIG-29 - 3,5" service LCD monitor - useful device for CCTV installer. Service monitor MIG-29 M3104 is a very handy device for anyone installing and configuring CCTV systems...
- archive DWR of Oct. 12, 2007
Size of an object on monitor screen. According to EN 50132-7 norm, the size of the representation of an object, e.g. human figure should be strictly connected with the aim of the operator - identification, recognition, detection or general observation...
- archive DWR of Nov. 26, 2007
The principles of designing terrestrial TV installation. The diagram below shows example installation in a building. The table contains signal levels for three chosen outlets of the installation...
- archive DWR of Oct. 29, 2007
Index of published issues.
Viva Las Vegas! - CES 2008. 9-cable system - multiswitch installations. How to choose a mount for the LCD television?...