FAQs

A.

A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device. The term includes set-top boxes with direct to disk recording, portable media players and TV gateways with recording capability, and digital camcorders.[1] Personal computers are often connected to video capture devices and used as DVRs; in such cases the application software used to record video is an integral part of the DVR. Many DVRs are classified as consumer electronic devices; such devices are sometimes referred to as personal video recorders (PVRs).

A.

A network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device. An NVR contains no dedicated video capture hardware. However, the software is typically run on a dedicated device, usually with an embedded operating system. Alternatively, to help support increased functionality and serviceability, standard operating systems are used with standard processors and video management software. An NVR is typically deployed in an IP video surveillance system.

A.

Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors.

A.

It usually involves three components:

Electronic Antenna
Deactivator or Detacher
Electronic Tag

Special tags and labels are fixed to merchandise or books. These tags or labels are removed or "deactivated" by the clerks when the item is properly bought or checked out.

Labels are deactived using a "Label Deactivator".

While ringing up purchases a cashier should pass each product label across the "Deactivation Pad".

To remove a Hard Tag a cashier uses a "Detacher" which releases the pin.

After a label is deactivated or a tag is removed the customer can then pass by the antenna without any alarm.

At the exits of the store, a detection system sounds an alarm or otherwise alerts the staff when it senses active tags are passing by.

A.

Electronic article surveillance is a technological method for preventing shoplifting from retail stores, pilferage of books from libraries or removal of properties from office buildings. Special tags are fixed to merchandise or books.