Vivotek NR7401 Uživatelský manuál

Chap.1 IP Surveillance Overview51.5 Central Management Software Central management software, often provided by the camera vendors or individual softw

Chap.1 IP Surveillance Overview61.6 Evolution of Video Surveillance For two decades of evolution, video surveillance has progressed from fully analog

Chap.2 Lens and Image Sensor Technology 7Lens and Image Sensor Technology 2.1 Lens The generation of a high quality image is decided by many factors i

Chap.2 Lens and Image Sensor Technology 8Figure 2.2 shows image distortion caused by a shorter focal length and the telephoto effect resulting from a

Chap.2 Lens and Image Sensor Technology 9Iris is measured in F-number, which is the ratio of the focal length to the lens diameter. Iris size is inv

Chap.2 Lens and Image Sensor Technology 10Sensor17.526 mmC-mountLensC-mount CameraSensor12.5 mmCS-mountLensCS-mount CameraSensor12.5 mm5.026 mmAdapter

Chap.2 Lens and Image Sensor Technology 112.2 Image Sensor An image sensor plays a key role in converting lights through the lens into electrical

Chap.2 Lens and Image Sensor Technology 12D1D1 format, also known as SMPTE 259M, is a digital image format developed by SMPTE Engineering Committee in

Chap.2 Lens and Image Sensor Technology 13MegapixelA megapixel network camera features a resolution at least three times larger than that of an analog

Chap.2 Lens and Image Sensor Technology 14With the refresh rate of a LCD monitors and a LCD TV enhancing to the same level of human eyes, there is n

Welcome to Planet VIVOTEK About VIVOTEK:VIVOTEK Inc., founded in 2000, has quickly taken its place as a leading manufacturer in the IP surveillance i

Chap.2 Lens and Image Sensor Technology 152.3.2 View Angle View angle is determined by the focal length of the lens and the sensor size. The shorter t

Chap.2 Lens and Image Sensor Technology 16ICRAn ICR (IR-cut Filter Removable) is a mechanical shutter design. It is placed between the lens and the

Chap.2 Lens and Image Sensor Technology 17IR Coating Another way to block infrared light is to apply a coating on the lens; however, this will reduce

Chap.2 Lens and Image Sensor Technology 18IR LEDsTo get a clear image under poor-light environments, purchasing additional IR LED accessories or choos

Chap.3 Video and Audio Compression 19Compression technologies have a major impact on image quality, bandwidth usage, storage space and system loading

Chap.3 Video and Audio Compression 203.1.2 MPEG-4MPEG-4 was formed by the MPEG working group under ISO and IEC in 1998. It was developed to facilitate

Chap.3 Video and Audio Compression 213.1.3 H.264 H.264 was initially developed by ITU (International Telecommunication Union) and then published by JV

Chap.3 Video and Audio Compression 223.2 Audio Compression Major audio compression technologies include G.711, AMR and AAC, which will be introduced b

Chap.3 Video and Audio Compression 233.3 Video and Audio Streaming 3.3.1 Multiple StreamsMultiple streaming allows each video stream to be delivered i

Chap.3 Video and Audio Compression 24Full duplexVoices can be transmitted in both directions at the same time. As in Figure 3.9, the control site can

Table of ContentsChap.1 IP Surveillance Overview 01 1.1 Overview 01 1.2 Network Cameras 01 1.2.1 Introduction 01 1.2.2 Camera Types 03

Chap.4 IP Network25IP Network Chap.44.1 Network Types As the most popular LAN technology, Ethernet uses a number of wiring to build the connection be

Chap.4 IP Network26RouterA router connects different Ethernet networks to achieve network coverage. It can connect LANs that use different network pro

Chap.4 IP Network27IPv6IPv6 standard consists of 128 bits, which are divided into eight parts, each group containing four 16-bit digits and is separat

Chap.4 IP Network28Submit Changed IP: 60.250.2.250Submit Changed IP: 60.250.168.3Access Video with The Same Domain Name: john-1.safe100.net CameraCame

Chap.4 IP Network29PPPoEPPPoE (Point-to-Point Protocol over Ethernet) is a protocol that enables connections between a DSL modem and the Internet. Thi

Chap.4 IP Network304.4.2 Transmission ProtocolsThis section introduces two types of protocols. UDP, TCP and HTTP are underlying protocols that carries

Chap.4 IP Network314.4.4EventNoticationSMTPSMTP (Simple Mail Transport Protocol) is for e-mail transmission. With SMTP, e-mail can be transmitted

Chap.4 IP Network32MultimediaGateway3G-324M3G Cell PhoneOfficeHome3GInternet4.5 Wireless Networks Wireless technologies include WiFi, WiMAX and 3GPP. W

Chap.4 IP Network33Network CameraNetwork Camera4.6 Security Since data is likely to be intercepted during transmission, appropriate protection schem

Chap.4 IP Network34IPSecIPSec (IP Security) is a security protocol designed to protect communications over the Internet. Incorporating security prot

Table of ContentsChap.4 IP Network 25 4.1 Network Types 25 4.2 Network Devices 25 4.3 IP Address 26 4.4 Network Protocols 27 4.4.

Chap.4 IP Network354.7 PoE Conventional network cameras require a power cable for power supply and an Ethernet cable for data transmission. PoE (Powe

Chap.4 IP Network36Figure 4.12 PoE-enabled devices for retail applicationPowerLANUPSPCLANLANLANLANRetail StoreInternetNR7401 with Built-in PoE Switc

Chap.5 Camera Housing and Mounting 37Camera Housing and Mounting 5.1 Housing A housing protects cameras from damages caused by vandalism or harsh

Chap.5 Camera Housing and Mounting 385.1.3 Covering The two main types of coverings are transparent and smoke. A housing with a smoke cover makes th

Chap.5 Camera Housing and Mounting 39Due to demand for placing network cameras at different locations, you can choose different kinds of mounting s

Chap.5 Camera Housing and Mounting 405.3 Scanner A network camera with a RS-232/422/485 interface can be connected to a pan/tilt scanner. With th

Chap.6 Bandwidth and Storage 41Bandwidth and Storage 6.1 Bandwidth Management Inordertoachieve efcientvideotransmission,itis important

Chap.6 Bandwidth and Storage 421 secondStore 3,600 seconds data in 1 hourStore 8 hours data in 1 dayStore 30 days in 1 month400Kb = 50KB50KB x 3,6

Chap.6 Bandwidth and Storage 43DASImages are transmitted from a camera to a host PC via Ethernet cables and stored directly in the hard disk drive o

Chap.6 Bandwidth and Storage 44RAID 5 (Parity RAID)RAID 5 consists ists of at least three hard disk drives. Similar to RAID 1, RAID 5 stores redun

Table of ContentsChap.7 Video Management 45 7.1 Video Management Platforms 45 7.1.1 PC-based 45 7.1.2 NVR-based 46 7.2 Basic Feature

Chap.7 Video Management 45Video ManagementApart from network cameras, a successful IP surveillance system must include powerful central management

Chap.7 Video Management 46As for ST7501, the functionalities will be introduced in section 7.2. VIVOTEK has formed an alliance with numbers of cen

Chap.7 Video Management 477.2 Basic Features of Software Video management software mainly includes web-based software and central management softwa

Chap.7 Video Management 48Figure 7.8 Video playback7.2.2 Recording Recording can be performed in different modes such as continuous, on schedule

Chap.7 Video Management 49Figure 7.9 E-map improves camera management efciency7.2.4 Management Throughthemanagementinterfaceofthesoftware,

Chap.7 Video Management 507.5 Manage Large Systems For a large surveillance system that consists of dozens or hundreds of network cameras, server

Chap.8 Applications 51ApplicationsNetwork cameras are being used in a variety of industries, from professional to personal applications. As each i

Chap.8 Applications 52Camera Placement Recommended FeaturesLarge outdoor places (airports, parking lots, parks, etc.)Small outdoor places (building

Chap.9 System Design 53System DesignChap.99.1 Identifying Customers Needs Before deploying an IP surveillance system, having a layout map of the si

Chap.9 System Design 549.1.2 Environmental Considerations CCTV CamerasSince customers tend to expect to keep the existing analogue CCTV cameras for th

Chap.1 IP Surveillance Overview11.1 OverviewIncreasing penetration of the Internet and the development of innovative technologies have encouraged rap

Chap.9 System Design 55 Section 1: Purpose ● What is the purpose of surveillance? Monitoring Viewing Recording Tracking Counting Crim

Chap.9 System Design 56● Number of cameras to be installed?● Types of camera to be installed? Fixed  PTZ  Fixed Dome Speed Dome● Targets to

Chap.9 System Design 57● How long will data be reserved?● How many cameras' images to be recorded simultaneously?● Any additional information to

Chap.9 System Design 589.2 System Planning Based on the survey above, you can get started with a comprehensive system design plan and select appropria

Chap.9 System Design 59 Can each camera provide coverage as planned? Can images be rendered clearly?  Can alarm sensors be triggered as expected?

Chap.9 System Design 609.5 System Maintenance Regular maintenance is required in order to ensure optimal performance and longer lifespan for the syst

Chap.10 Intelligent Video Systems 61PC Analog-to-digital ConvertionVideo/Audio CompressionVideo/Audio ManagementVideo/Audio StorageAnalog CamerasVide

Chap.10 Intelligent Video Systems 6210.2.2 Distributed PlatformA distributed intelligent video system uses intelligent network cameras to analyze vide

Chap.10 Intelligent Video Systems 6310.3 Advantages of Distributed Architecture Since a distributed intelligent video system has video content analy

Chap.10 Intelligent Video Systems 64Conventional Motion Detection Intelligent Motion DetectionConventional Motion Detection Intelligent Motion Detecti

Chap.1 IP Surveillance Overview2A network camera mainly consists of a lens, an image sensor, an image processor, a video compression SoC (System o

Chap.10 Intelligent Video Systems 6510.4.3 Loitering DetectionLoiteringdetectioncandetectanobjectorapersonthat hasbeenstayingina prede

Chap.10 Intelligent Video Systems 6610.4.5 People CountingPeople counting can calculate the amount of people in an area and provide the information f

Glossary 67GlossaryAEAuto Exposure, a system for automatically setting the proper exposure according to the existing light conditions. There are thr

68Notes

Chap.1 IP Surveillance Overview3In addition to a full-range IP surveillance product lineup, VIVOTEK has achieved competitive advantages over other ri

Chap.1 IP Surveillance Overview4Figure 1.8 Video server1.3 Video Servers A video server is a device that converts analog signals to digital, allowi