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DVRs, or digital video recorders, are hard disk video recorders, which are often referred to as DVRs, as opposed to traditional analog video recorders. It is a set of computer systems for image storage processing. It has functions for long-term recording, recording, remote monitoring and control of images/voices.
First, the main function of DVR <br> <br> video storage. All hard disk recorders can be connected to the serial hard disk. Users can select different hard disks to connect according to their own video storage time.
Video viewing. The hard disk recorder has BNC, VGA video output and can be used with TVs, monitors, computer monitors and other display devices. Some manufacturers also integrate display screens with hard disk recorders.
Centralized video management. All manufacturers' DVRs are equipped with centralized management software. They can use this software to manage the video images of multiple DVRs and store them in a unified manner with video.
remote access. The DVR is set up via the network to enable remote access and mobile phone access. Let monitoring be done anywhere, anytime with a network.
The main functions of the DVR include monitoring functions, recording functions, playback functions, alarm functions, control functions, network functions, password authorization functions, and work schedule functions.
Second, the main purpose classified <br> <br> DVR DVR is converting the analog image signal transmitting apparatus over the front end into a digital signal, stored in the hard disk after compressed, generally divided into PC and embedded.
PC-type hard disk recorders can be further subdivided as follows :
(1) IPC PCDVR
Industrial PCDVR adopts industrial control chassis, which can resist the harsh environment and interference of industrial environment. The CPU industrial integrated card and industrial backplane can support more video and audio channels and more IDE hard disks. Of course, the price is two or three times that of a typical commercial PC. It is often used in a variety of important situations and situations where a large number of channels are required.
(2) Commercial PCDVR
Commercial PCDVRs also generally use industrial control chassis to improve the stability and reliability of the system. The use of common commercial PC chassis is also used for the smaller number of audio and video channels. It uses a universal PC motherboard and various boards to meet the system's requirements. It is cheap and adaptable to the environment. It is often used in all kinds of general situations. The number of image channels is generally less than 24 channels.
(3) Server PCDVR
The server PCDVR adopts the chassis and mainboard of the server, and the stability and reliability of the system are greatly improved compared with the former two. It often has a UPS uninterruptible power supply and a massive disk storage array that supports hard disk hot-plugging. It can run continuously for 24 hours x 7 days. It is often used in special applications where the number of monitoring channels is large and the monitoring requirements are very high.
Third, its outstanding characteristics are reflected in the following aspects :
1. Digital high-fidelity storage that implements analog programs can record and store analog and audio and video programs that are widely distributed and personally collected in an advanced digital manner. Recording at one time and repeatedly playing multiple times will not reduce the quality.
2. The comprehensive input/output interface provides antenna/TV cable, AV terminal, S terminal input interface and AV terminal, S terminal output interface. It can record almost all TV programs and other player, camera output signals, and easily connect with other audio-visual equipment.
3. A variety of selectable image recording levels For the same program source, high, medium, and low image quality recording levels are provided. When the highest level is selected, the recorded image quality is close to that of the DVD.
4. Large-capacity long-term program storage, strong scalability Users can choose to use 20.4GB, 40GB or more hard drives for program storage. Calculated at 20.4GB capacity.
5. With advanced time-shifting function When you have to interrupt watching TV programs, the user simply presses the Timeshifting key, and the programs starting from the interruption of the watching time will be automatically saved, and the user can also stop the interruption after processing the transaction. From the location, you will continue to watch the show without any pause.
6. Perfect appointment recording/playing program features. The user is free to set options such as the start time, length of time to start recording/playing the program. Through the edited combination of scheduled program listings, it is possible to systematically record a variety of intermittent television programs, including television series.
7. Powerful Network Information Home appliance center users can enjoy rich online information via a network communication interface, using a DVR tailor-made web browser and equipped with corresponding network resources.
8. Providing a convenient method for managing recorded programs The user can organize and classify the recorded programs according to the recording time, the program type, etc., and freely set the bookmarks at the favorite places.
9. Provides arbitrary playback methods Due to the fast and random storage of the hard disk, when enjoying recorded and recording programs, you can perform trick-play with more and more flexible methods than current DVD players. The image is smoother and has higher detail resolution when played slowly.
First, the main function of DVR <br> <br> video storage. All hard disk recorders can be connected to the serial hard disk. Users can select different hard disks to connect according to their own video storage time.
Video viewing. The hard disk recorder has BNC, VGA video output and can be used with TVs, monitors, computer monitors and other display devices. Some manufacturers also integrate display screens with hard disk recorders.
Centralized video management. All manufacturers' DVRs are equipped with centralized management software. They can use this software to manage the video images of multiple DVRs and store them in a unified manner with video.
remote access. The DVR is set up via the network to enable remote access and mobile phone access. Let monitoring be done anywhere, anytime with a network.
The main functions of the DVR include monitoring functions, recording functions, playback functions, alarm functions, control functions, network functions, password authorization functions, and work schedule functions.
Second, the main purpose classified <br> <br> DVR DVR is converting the analog image signal transmitting apparatus over the front end into a digital signal, stored in the hard disk after compressed, generally divided into PC and embedded.
PC-type hard disk recorders can be further subdivided as follows :
(1) IPC PCDVR
Industrial PCDVR adopts industrial control chassis, which can resist the harsh environment and interference of industrial environment. The CPU industrial integrated card and industrial backplane can support more video and audio channels and more IDE hard disks. Of course, the price is two or three times that of a typical commercial PC. It is often used in a variety of important situations and situations where a large number of channels are required.
(2) Commercial PCDVR
Commercial PCDVRs also generally use industrial control chassis to improve the stability and reliability of the system. The use of common commercial PC chassis is also used for the smaller number of audio and video channels. It uses a universal PC motherboard and various boards to meet the system's requirements. It is cheap and adaptable to the environment. It is often used in all kinds of general situations. The number of image channels is generally less than 24 channels.
(3) Server PCDVR
The server PCDVR adopts the chassis and mainboard of the server, and the stability and reliability of the system are greatly improved compared with the former two. It often has a UPS uninterruptible power supply and a massive disk storage array that supports hard disk hot-plugging. It can run continuously for 24 hours x 7 days. It is often used in special applications where the number of monitoring channels is large and the monitoring requirements are very high.
Third, its outstanding characteristics are reflected in the following aspects :
1. Digital high-fidelity storage that implements analog programs can record and store analog and audio and video programs that are widely distributed and personally collected in an advanced digital manner. Recording at one time and repeatedly playing multiple times will not reduce the quality.
2. The comprehensive input/output interface provides antenna/TV cable, AV terminal, S terminal input interface and AV terminal, S terminal output interface. It can record almost all TV programs and other player, camera output signals, and easily connect with other audio-visual equipment.
3. A variety of selectable image recording levels For the same program source, high, medium, and low image quality recording levels are provided. When the highest level is selected, the recorded image quality is close to that of the DVD.
4. Large-capacity long-term program storage, strong scalability Users can choose to use 20.4GB, 40GB or more hard drives for program storage. Calculated at 20.4GB capacity.
5. With advanced time-shifting function When you have to interrupt watching TV programs, the user simply presses the Timeshifting key, and the programs starting from the interruption of the watching time will be automatically saved, and the user can also stop the interruption after processing the transaction. From the location, you will continue to watch the show without any pause.
6. Perfect appointment recording/playing program features. The user is free to set options such as the start time, length of time to start recording/playing the program. Through the edited combination of scheduled program listings, it is possible to systematically record a variety of intermittent television programs, including television series.
7. Powerful Network Information Home appliance center users can enjoy rich online information via a network communication interface, using a DVR tailor-made web browser and equipped with corresponding network resources.
8. Providing a convenient method for managing recorded programs The user can organize and classify the recorded programs according to the recording time, the program type, etc., and freely set the bookmarks at the favorite places.
9. Provides arbitrary playback methods Due to the fast and random storage of the hard disk, when enjoying recorded and recording programs, you can perform trick-play with more and more flexible methods than current DVD players. The image is smoother and has higher detail resolution when played slowly.
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