Archive for the ‘Mandatory access control’ Category

The incorporation of computer intelligence and network connectivity into devices and systems—the basic convergence influence—allows systems to be of greater and greater real-time benefit to the systems users. The widespread deployment of personal computers and networks has resolved, for all practical purposes, the connectivity barrier. Driven by relentless customer demand for improved systems, a number… Read more >>

WHAT IS CCD?? A charge coupled device (CCD) camera is an apparatus which is designed to convert optical brightness into electrical amplitude signals using a plurality of CCDs, and then reproduce the image of a subject using the electric signals without time restriction. Charge coupled devices or CCDs are arrays of semiconductor gates formed on… Read more >>

There are 2 broad categories of video formats. Some formats are meant for your finalized video and are called sharing formats. Other formats are used more in the beginning stages of a video project. They are good as raw video master clips. These formats will have higher resolution and larger file sizes than the sharing… Read more >>

When selecting a video surveillance system, we all need finest picture quality with huge storage in exchange of our money. There are following ten points which should be taken into account while selecting any 20th century CCTV cameras:  1. End Your Interlace Issues: Once you move to some Multilevel IP camera, you receive rid with… Read more >>

  A smart card reader is an electronic device that reads smart cards. Access control card readers are used in physical security systems to read a credential that allows access through access control points, typically a locked door. An access control reader can be a magnetic stripe reader, a bar code reader, a proximity reader,… Read more >>

Compression and Data Management: As because megapixel cameras resolve so much detail, bandwidth usage and video storage can quickly become an issue. Both are dependant on the compression format used in the camera (Motion JPEG or MPEG-4 are two of the most common) and the frame rate at which the video is transmitted. Without going… Read more >>

Megapixel Cameras  The improved clarity provided by megapixel cameras was first applied to broadcast applications when television stations started migrating from NTSC to HD (high definition). Poorly constructed sets and props such as fake bookcases with painted-in books didn’t cut it when shot with high-resolution HD cameras. In the video surveillance arena, the clarity and… Read more >>

Main Points that we consider according to the need to Customers: End users want access control systems to do more than ever before, but don’t necessarily have the funds to invest in a lot of new hardware. Today’s top list of desired features could include many of the following: IP or Web-based — Using the… Read more >>

The Wiegand Reader-to-Controller Interface: An interface defines how two devices communicate with one another. Various readers can communicate with access control panels using a variety of well-established, industry-standard interfaces including: • Wiegand • Serial (RS232, RS422, RS485) • Clock-and-Data (Magnetic Stripe Track/2) – Also known as ABA format. We will concentrate on the Wiegand interface… Read more >>

 The term Weigand is applied to several characteristics related to Access Control readers and cards. Unfortunately, the word is often used very carelessly and can lead to unnecessary confusion. Here are the basic facts:   Weigand is: 1.      A specific reader-to-Card Interface. 2.      A specific binary reader-to-Controller Interface. 3.      An electronic signal carrying data. 4.     … Read more >>