CN101179714A - Repeater apparatus linking video acquirement apparatus and video recording apparatus using unshielded twisted pair cable - Google Patents
Repeater apparatus linking video acquirement apparatus and video recording apparatus using unshielded twisted pair cable Download PDFInfo
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- CN101179714A CN101179714A CNA2007101999427A CN200710199942A CN101179714A CN 101179714 A CN101179714 A CN 101179714A CN A2007101999427 A CNA2007101999427 A CN A2007101999427A CN 200710199942 A CN200710199942 A CN 200710199942A CN 101179714 A CN101179714 A CN 101179714A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/108—Adaptations for transmission by electrical cable the cable being constituted by a pair of wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/907—Television signal recording using static stores, e.g. storage tubes or semiconductor memories
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
Abstract
Disclosed is a video acquirement apparatus to acquire a video signal of monitoring area, to convert the acquired video signal into a differential video signal and a network stream, and to transmit the converted signal to a repeater apparatus using a UTP cable. The repeater apparatus supplies power to the video acquirement apparatus using the UTP cable, and receives the differential video signal and the network stream from the video acquirement apparatus. If network condition is unsatisfactory, the repeater apparatus outputs the received differential video signal to a video recording apparatus using one UTP cable. The video recording apparatus converts the output differential video signal using one UTP cable into a general video signal, and variably amplifies and records the converted general video signal.
Description
Invention field
This present general inventive concept is usually directed to use unshielded twisted pair (UTP) cable to connect the repeater devices of video deriving means and video recording apparatus.Especially, this present general inventive concept relates to repeater devices, it connects video deriving means and video recording apparatus by the UTP cable, and the difference video signal (differentialvideo signal) that uses the UTP cable that the video deriving means is sent is sent in the video recording apparatus.
Background technology
Provide the Close Circuit Television (CCTV) system that monitors with safety from the video deriving means, to obtain the video of monitor area, by video transmission line this video that obtains is sent and records in the video recording apparatus, and on video display devices, optionally export this video.The image quality that receives in the video recording apparatus depends on this video transmission line very much.
Fig. 1 is the schematic diagram of a kind of general CCTV system.With reference to figure 1, general CCTV system will be transmitted from the analog video signal that video deriving means 10 obtains and be recorded in the video recording apparatus 30 by coaxial cable 20, and the analog video signal of selecting output to be transmitted on video display devices 40 by coaxial cable 20.
Fig. 2 is the view of explanation a kind of general multichannel (road) CCTV system communications line.With reference to figure 2, multichannel (road) CCTV system can comprise a plurality of video deriving means 10.These video deriving means 10 comprise the power line that power supply is provided, and by coaxial cable 20 vision signal of being obtained are sent in the video recording apparatus 30.For example, 16 channels (road) CCTV system as shown in Figure 2 need be to 16 coaxial cables that should 16 channels.
Coaxial cable is significant for video transmission, but has some problems, i.e. elongated along with transmission range, coaxial cable to around noise ratio responsive, and along with the gain of the loss vision signal of signal and high frequency response with step-down.And the large scale of coaxial cable and big weight also make structure become heavy.
Can restrain oneself the system of the difference video signal of characteristic good and realize above-mentioned characteristic of this present general inventive concept and effect by a kind of transmitted noise that is used for is provided.
Fig. 3 is the view of general analog video signal of explanation and difference video signal.With reference to figure 3, a kind of analog video signal (a) that obtains from video deriving means 10 and transmit by coaxial cable 20 has been described, and the difference video signal (b) that transmits by difference video transmission line 60.This difference video signal (b) comprises the regular vision signal of same-phase as this analog video signal (a) and the reverse vision signal of antiphase.
Fig. 4 is the view of the CCTV of illustrative system transmission difference video signal.With reference to figure 4, the analog video signal that this CCTV system will obtain in video deriving means 10 by coaxial cable 20 sends in first transducer 50, and analog video signal is converted to difference video signal.The difference video signal that first transducer 50 will be changed by the UTP cable 60 of difference video signal transmission line sends in second transducer 70.This second transducer 70 is converted to analog video signal with this difference video signal, and sends in the video recording apparatus 30 by the vision signal that coaxial cable 20 will be changed.
First transducer 50 can be a kind of unpowered manual transducer 52, or the Output Size that power active transducer 54 is adjusted vision signal according to length of transmission line is decayed with respective signal.Second transducer 70 can be a kind of unpowered manual transducer 72, or power active transducer 74 compensates owing to the image impairment that causes of transmission, such as signal gain and frequency response, and automatic optimization or manual adjustment picture quality.
The transmission line that is used to transmit difference video signal than the coaxial cable that is used to transmit general vision signal more economically.
The CCTV system that is used to transmit difference video signal uses coaxial cable 20 to connect the video deriving means 10 and first transducer 50, and second transducer 70 and video recording apparatus 30.
In multichannel CCTV system, required power line is used to provide power supply to corresponding video deriving means 10.And, need the UTP cable 60 of corresponding each passage that the vision signal that this passage obtained is sent in the video recording apparatus 30.As a result, the cost of implementing this multichannel CCTV system is high, and structure is heavy.
Summary of the invention
This present general inventive concept provides a kind of repeater devices, reduces transmission line by a UTP cable transmission in the CCTV system from the vision signal that multipath obtained by the method for using the transmission difference video signal.
The other aspect and the purposes of this present general inventive concept will partly be set forth in explanation subsequently, partly, will from explanation obviously perhaps can be understood from the practice of present general inventive concept.
This present general inventive concept also provides a kind of repeater devices, to provide power to corresponding multipath under the situation of the power supply line of the correspondence that does not provide power to multipath.
This present general inventive concept also provides a kind of repeater devices, and this device is converted to based on network surveillance and does not need to change transmission line, and obtains the vision signal of monitor area when network error occurring in based on network surveillance.
In addition, this present general inventive concept provides the video deriving means, and it is under the situation of no differential signal conversion equipment, with the vision signal directly obtained or be converted to difference video signal, perhaps be converted to network flow, and the signal of conversion is transferred to the repeater devices that connects by the UTP cable.
In addition, this present general inventive concept provides a kind of video recording apparatus, directly receive using the UTP cable not have additional device and transmission line from the difference video signal of repeater devices transmission, difference video signal being converted to general vision signal, with and control method.
The other aspect and the purposes of this present general inventive concept will partly be set forth in explanation subsequently, partly, will from explanation obviously perhaps can be understood from the practice of present general inventive concept.
Aforementioned and/or the others of this present general inventive concept can realize that this device comprises by a kind of repeater devices is provided: a plurality of ports that are connected with a plurality of cables by a plurality of video deriving means; The power cell of power is provided to a plurality of video deriving means by a plurality of ports; And output port, output to a video recording apparatus that cable connect that use comprise many piece circuits by a plurality of vision signals that a plurality of ports transmit by described output port from a plurality of video deriving means.
Described device can further comprise: Power over Ethernet (PoE) hub, described Power over Ethernet (PoE) hub will offer a plurality of video deriving means that use a plurality of ports by the power of power cell input, and a plurality of network flows that will transmit from a plurality of video deriving means that use a plurality of ports output to output port.
Described device can further comprise: switch unit, described switch unit be used for switching output port in case output from a plurality of vision signals of a plurality of video deriving means transmission of using a plurality of ports with from of a plurality of network flows of a plurality of video deriving means transmission of using a plurality of ports.
Many cables can be many unshielded twisted pairs (UTP) cables, article one, cable can be a UTP cable, and be provided for the corresponding UTP that is included in the UTP cable, and be transferred to video recording apparatus from the differential signal of a plurality of vision signals of a plurality of video deriving means transmission of using a plurality of ports.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that this device comprises by a kind of video deriving means is provided: in order to obtain the shooting unit of vision signal; And converting unit, the vision signal that described converting unit uses active element to obtain from the shooting unit is converted to difference video signal, and video signal converted is transferred to the external device (ED) that uses cable to connect.
External device (ED) can be a repeater devices, and video obtains further and comprises: power cell, described power cell be in order to the repeater devices received power from using cable to connect, and power offered take unit and converting unit.
Converting unit can comprise: first and second resistors; In-phase amplifier, the gain that described in-phase amplifier amplifies in order to the homophase of adjusting vision signal according to the variation of first and second resistors; And inverting amplifier, described inverting amplifier is in order to adjust the gain of the anti-phase amplification of vision signal according to the variation of first and second resistors.
Described device can further comprise: the control signal processor, described control signal processor is in order to control at least one of taking in unit and the converting unit according to the control signal that is transferred to cable by repeater devices.
Described device can further comprise: in order to handle the audio process of input audio signal; And in order to this audio signal is converted to the audio conversion unit of difference audio signal.
Cable can be the UTP cable.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that described device comprises by a kind of video deriving means is provided: in order to obtain the shooting unit of vision signal; And power cell, described power cell is in order to receiving from the power of transmission from the repeater devices of taking vision signal that the unit obtains, and this power is offered the shooting unit.
Aforementioned and/or others of this present general inventive concept and purposes also can be by providing a kind of video deriving means, and described device comprises: in order to obtain the shooting unit of vision signal; The vision signal that converting unit, described converting unit use active element to obtain from the shooting unit is converted to difference video signal, and video signal converted is transferred to the external device (ED) that uses cable to connect; Network interface unit, described network interface unit will be in order to being converted to network flow from taking the vision signal that the unit obtained; And unit of transmission and reception, described unit of transmission and reception sends to the external device (ED) that uses cable to connect in order to the network flow that will change.
External device (ED) can be a repeater devices, Network Transmission and receiving element can receive and provide the power from the repeater devices of using cable to be connected, and the video deriving means can further comprise: power cell, described power cell offers shooting unit, converting unit and network interface unit in order to the power of automatic network unit of transmission and reception in future.
Network Transmission and receiving system can receive the control signal that is transferred to cable by repeater devices.
Converting unit can comprise: first and second resistors; In-phase amplifier, the gain that described in-phase amplifier amplifies in order to the homophase of adjusting vision signal according to the variation of first and second resistors; And inverting amplifier, described inverting amplifier is in order to adjust the gain of the anti-phase amplification of vision signal according to the variation of first and second resistors.
This cable can be the UTP cable.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that described device comprises by a kind of video recording apparatus is provided: in order to receive the differential signal input of difference video signal; Difference video processor, described difference video processor be in order to being converted to difference video signal general vision signal, and amplify the general vision signal of this conversion changeably; And in order to the recording medium of the general vision signal that writes down this amplification.
The differential signal input can comprise a plurality of inputs, and receives a plurality of difference video signals of corresponding input.
Described device can further comprise: controller, described controller is in order to controlling the amplifieroperation of difference video processor according to the value of setting of compensating elements, so that the gain by compensating general vision signal and at least one in the frequency response characteristic are optimized picture quality.
Compensating elements can comprise: the gain of general vision signal and at least one in the frequency response characteristic, and controller is provided with the value of setting of compensating elements automatically according to the cable length of the transmission difference video signal of user's input.
Controller can be adjusted the value of setting of compensating elements automatically according to user's input.
The difference video processor can comprise: digital-to-analogue (D/A) transducer, and described digital-to-analogue (D/A) transducer is in order to be converted to voltage with the value of setting of frequency response and the value of setting of gain; First variable gain amplifier, described first variable gain amplifier are adjusted the frequency response of general vision signal in order to the basis and the corresponding voltage of the frequency response value of setting of this conversion; And second variable gain amplifier, described second variable gain amplifier in order to according to and the corresponding voltage of the value of setting of the gain of this conversion adjust the gain of general vision signal.
Cable can be the UTP cable.
Aforementioned and/or others of this present general inventive concept and purposes also can realize by a kind of surveillance is provided, described system comprises: the video deriving means, described video deriving means is in order to obtaining the vision signal of monitor area, and the vision signal that this obtains is converted to difference video signal and network flow; Repeater devices, described repeater devices provides power to the video deriving means in order to the cable that use to connect the video deriving means, and one of the difference video signal that the video deriving means is transmitted and network flow output to the cable with many circuits; And video recording apparatus, this difference video signal that described video recording apparatus is exported in order to a cable that use is connected to repeater devices is converted to general vision signal, amplifying the general vision signal of this conversion changeably, and write down this amplifying signal.
Connect repeater devices and video deriving means and be connected video recording apparatus and the cable of repeater devices can be the UTP cable.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that described system comprises by a kind of video system is provided: one or more in order to obtain the video deriving means of vision signal; Video recording apparatus in order to recorded video signal; And repeater devices, described repeater devices is in order to connect one or more video deriving means and video recording apparatus, and wherein repeater devices arrives video recording apparatus by unshielded twisted pair (UTP) cable connection.
Aforementioned and/or others of this present general inventive concept and purposes also can by provide a kind of network can with repeater devices realize that this device comprises: in order to export first output port of one or more difference video signals; In order to export second output port of one or more network flows; And switch unit, described switch unit is in order to switch between first output port and second output port at predetermined interval detection network state and state Network Based.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that this method may further comprise the steps by a kind of method of improving vision signal is provided: the output display message is to be provided with one or more compensating elements of vision signal; And confirm according to the display message of output whether the user has imported length of transmission line, if so that obtain confirming, the value of the one or more compensating elements corresponding with the length of transmission line of importing is set so automatically; And compensate this vision signal according to being provided with of one or more compensating elements.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that this method comprises by a kind of method of operating video system is provided: obtain vision signal by one or more video deriving means; To offer repeater devices from the vision signal that one or more deriving means obtained; And the vision signal of being obtained is offered video recording apparatus from repeater devices by unshielded twisted pair (UTP) cable.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that this method comprises by a kind of method of operating repeater devices is provided: detect network state at predetermined space; And based on network state, switching in order to first output port of exporting one or more difference video signals with between in order to second output port of exporting one or more network flows, when detecting state corresponding to network error with box lunch, switch unit switches in order to export first output port of one or more difference video signals.
The method of a kind of operation monitoring system, this method comprises: the vision signal of obtaining monitor area by the video deriving means; By the video deriving means vision signal of being obtained is converted to difference video signal and network flow; By repeater devices power is offered the video deriving means; Use the cable that connects the video deriving means, will output to a cable from the difference video signal and the network flow of video deriving means transmission with many circuits by repeater devices; And, use the difference video signal of a cable output that connects repeater devices to be converted to general vision signal by video recording apparatus, amplify the general vision signal of this conversion changeably, and write down this amplifying signal.
Aforementioned and/or others of this present general inventive concept and purposes also can realize that wherein this method comprises by a kind of computer readable recording medium storing program for performing that has the computer program of carrying out a kind of method on it is provided: detect network state at predetermined space; And based on network state, switching in order to first output port of exporting one or more difference video signals with between in order to second output port of exporting one or more network flows, when detecting the network error state with box lunch, switch unit switches in order to export first output port of one or more difference video signals.
Description of drawings
These of this present general inventive concept and/or other direction and practicality will become from the following explanation of in conjunction with the accompanying drawings embodiment obviously and be easier to and understand, wherein:
Fig. 1 is the view that schematically illustrates common Close Circuit Television (CCTV) system;
Fig. 2 is the view of the transmission line of the common multichannel CCTV of explanation system;
Fig. 3 is the view of general analog video signal of explanation and difference video signal;
Fig. 4 is the view of the CCTV system of explanation transmission difference video signal;
Fig. 5 is the view of explanation according to the described a kind of multichannel CCTV system communications line of the specific embodiment of this present general inventive concept, and this system comprises and being used for by using unshielded twisted pair (UTP) cable to connect the repeater devices of video deriving means and video record device;
Fig. 6 is the view of explanation according to a kind of video deriving means of the specific embodiment of this present general inventive concept, and this device is by using the UTP cable to be connected with repeater devices;
Fig. 7 A is a kind of schematic block diagram of video deriving means, and wherein this video deriving means described in Fig. 6 is the analog video deriving means;
Fig. 7 B is the view of the converting unit of the video deriving means among the key diagram 7A;
Fig. 7 C is the block diagram of explanation according to the analog video deriving means of another specific embodiment of this present general inventive concept;
Fig. 7 D is the block diagram of explanation according to the analog video deriving means of another specific embodiment of this present general inventive concept;
Fig. 7 E is the block diagram of video deriving means, and the illustrated video deriving means of Fig. 6 is a kind of IP video deriving means therein;
Fig. 7 F is the view of Power over Ethernet (PoE) receiving element of the video deriving means of key diagram 7E;
Fig. 7 G is the schematic block diagram of video deriving means, and the illustrated video deriving means of Fig. 6 is a kind of multi-functional video deriving means therein.
Fig. 8 is the view of explanation according to the repeater devices of a specific embodiment of this present general inventive concept;
Fig. 9 A is that explanation uses the UTP cable to be connected to the block diagram of the repeater devices of analog video deriving means;
Fig. 9 B is explanation is connected to the repeater devices of analog video deriving means according to the use UTP cable of a specific embodiment of this present general inventive concept a block diagram;
Fig. 9 C is explanation is connected to the repeater devices of analog video deriving means according to the use UTP cable of another specific embodiment of this present general inventive concept a block diagram;
Figure 10 is the block diagram according to the video recording apparatus of a specific embodiment of this present general inventive concept;
Figure 11 is the view of explanation according to the input of the video recording apparatus of a specific embodiment of this present general inventive concept;
Figure 12 is the view of explanation according to the difference video processor of the video recording apparatus of a specific embodiment of this present general inventive concept;
Figure 13 is the view of display message that be used to control difference video signal of explanation according to a specific embodiment of this present general inventive concept; With
Figure 14 is the flow chart of explanation according to the control method of the video recording apparatus of a specific embodiment of this present general inventive concept.
Embodiment
The embodiment of this present general inventive concept will be described in detail belows, example wherein is described with reference to the accompanying drawings, wherein, identical reference number is represented identical unit in the full text.Below by describing embodiment with reference to the accompanying drawings so that explain this present general inventive concept.
Fig. 5 is the view of explanation according to the transmission line of a kind of multichannel CCTV system of this present general inventive concept specific embodiment, and this system comprises and being used for by using unshielded twisted pair (UTP) cable to connect the repeater devices of video deriving means and video record device.
With reference to figure 5, multichannel CCTV system can comprise 100, four repeater devices 300 of 16 video deriving means and a video recording apparatus 400.That is to say that can there be 16 passages in this CCTV system.
Video deriving means 100 is converted to difference video signal with vision signal, and uses first group of UTP cable 200 that the signal that transforms is sent in the repeater devices 300.That is to say, between four video deriving means 100 and a repeater devices 300, connect, and four video deriving means 100 send to this difference video signal in the repeater devices 300 by first group of UTP cable 200 with first group of UTP cable 200 short distance.
Especially, this repeater devices 300 uses first group of UTP cable 200 to be connected video deriving means 100 and video recording apparatus 400 with the 2nd UTP cable 250.Repeater devices 300 uses first group of UTP cable 200 to offer video deriving means 100 by the electricity (energy) of power line input.In this embodiment, each repeater devices 300 provides electricity to four video deriving means 100.
Therefore, repeater 300 four difference video signals using four the 2nd UTP cables 250 to send from four video deriving means 100 send in the video recording apparatus 400.The 2nd UTP cable 250 is connected long distance between repeater 300 and the video recording apparatus 400 by the 2nd UTP cable 250 that is respectively applied for four passages.
In first group of UTP cable 200 and the 2nd UTP cable 250 each can comprise many to UTP, for example four pairs.Transmit by a pair of UTP that use is included in first group of UTP cable 200 from the difference video signal in the video deriving means 100, so that will send in the video recording apparatus 400 by four couples of UTP that are included in the 2nd UTP cable 250 from four difference video signals in four video deriving means 100.
Fig. 6 is the view of explanation according to the described a kind of video deriving means of this present general inventive concept specific embodiment, and this device is by using the UTP cable to be connected with repeater devices.
With reference to figure 6, video deriving means 100 is connected with a UTP cable 200 on being connected to repeater devices 300.An example as video deriving means 100 can use a kind of concealed video camera (carema).The analog video signal that this concealed video camera will obtain from default monitor area is converted to difference video signal, and the difference video signal that uses a UTP cable 200 to change sends in the repeater devices 300.
Fig. 7 A is a kind of schematic block diagram of video deriving means, and wherein this video deriving means described in Fig. 6 is the analog video deriving means.
With reference to figure 7A, video deriving means 100 obtains and the transportation simulator vision signal.Video deriving means 100 can comprise that one is taken unit 110, signal processor 120, transducer 130 and power (power supply) unit 140.
Take unit 110 and obtain analog video signal by optical video is converted to electronic signal.
The analog video signal that transducer 130 will obtain from signal processor 120 is converted to difference video signal, and the difference video signal that uses one of four couples of UPT being included in the UTP cable 200 to change is transferred in the repeater devices 300.
Power cell (power unit) 140 offers power one of four couples of UTP being included in the UTP cable 200 and to for taking unit 110, signal processor 120 and transducer 130.
Fig. 7 B is the view of the converting unit of the video deriving means among the key diagram 7A.
With reference to figure 7B, transducer 130 is a kind of dielectric active transducers.This transducer 130 is converted to difference video signal by the gain of adjusting vision signal with vision signal.This transducer 130 can comprise in-phase amplifier Op1, inverting amplifier Op2 and feedback parameter R1 and R2.
[equation 1]
With reference to equation 1, generate difference video signal, wherein gain amplifier and non-gain amplifier are adjusted according to the variable of feedback parameter R1 and R2.
Fig. 7 C is the block diagram of explanation according to the analog video deriving means of another specific embodiment of this present general inventive concept.
With reference to figure 7C, video deriving means 100 can comprise takes unit 110, signal processor 120, transducer 130, power cell 140 and control signal processor 150.
Fig. 7 D is the block diagram of explanation according to the analog video deriving means of another specific embodiment of this present general inventive concept.
With reference to figure 7D, video deriving means 100 can comprise takes unit 110, signal processor 120, transducer 130, power (power supply) unit 140, control signal processor 150, Sound Processor Unit 160 and acoustic transducer 165.
The analoging sound signal that acoustic transducer 165 will transmit from Sound Processor Unit 160 is converted to the difference voice signal, and uses difference transmission of sound signals that one of four couples of UTP being included in the UTP cable 200 will change in repeater devices 300.
If use the control signal of UTP cable 200 input audio signals, Sound Processor Unit 160 and acoustic transducer 165 come processing audio signal according to the control of this control signal processor 150 so.
Fig. 7 E is the block diagram of video deriving means, and wherein the illustrated video deriving means of Fig. 6 is a kind of IP video deriving means.
With reference to figure 7E, video deriving means 100 is connected on the network.This video deriving means 100 obtains analog video signal, and the vision signal that provides this to obtain in network flow.This video deriving means 100 can comprise takes unit 110, signal processor 120, power cell 140, Power over Ethernet (PoE) receiver 170 and network interface unit 180.
The vision signal that signal processor 120 will transmit from take unit 110 is converted to digital signal.The electricity that power cell 140 will provide from the PoE receiver 170 that will make an explanation below offers takes unit 110, signal processor 120 and network interface unit 180.
Fig. 7 F is the view of Power over Ethernet (PoE) receiving element of the video deriving means of key diagram 7E.
With reference to figure 7F, PoE receiver 170 can comprise power source arrangement (PSE) 172 and power device (PD) 174.
PSE172 offers signal with the power supply of 48V and uses DC transducer 175 that the 48V power source conversion is direct current (DC) to line, PD174, and exports electricity (power) source of this conversion.Network data line and power line are shared.That is to say that power supply is provided for signal to line, and network flow is transferred to signal to one in the line.
Fig. 7 G is the schematic block diagram of video deriving means, and wherein the illustrated video deriving means of Fig. 6 is a kind of multi-functional video deriving means.
With reference to figure 7G, video deriving means 100 is a kind of video deriving means of the IP video deriving means of a kind of analog video deriving means that has made up Fig. 7 A and Fig. 7 E.This video deriving means 100 can comprise takes unit 110, signal processor 120, transducer 130, power cell 140, PoE receiver 170 and network interface unit 180.
The vision signal that this video deriving means 100 will obtain from default monitor area is converted to difference video signal and network flow, and by UTP cable 200 this video signal converted is transferred in the repeater devices 300.
If in based on network CCTV system,, avoid the omission of monitor area information so by the transmission difference video signal owing to the such mistake of monitor area information takes place not obtain network error.
Fig. 8 is the view of explanation according to the repeater devices of the specific embodiment of this present general inventive concept.
With reference to figure 8, repeater devices 300 is connected with four video deriving means (ch.1-ch.4) by four UTP cables (202-208).
Fig. 9 A is that explanation uses the UTP cable to be connected to the block diagram of the repeater devices of analog video deriving means.
With reference to figure 9A, repeater devices 300 can comprise that power connector 310, power provide device 320 and five UTP cableports (332-340).
Four the UTP cables (202-208) that connect repeater devices 300 and video deriving means (ch.1-ch.4) are connected to four UTP cableports (332-338).UTP cableport 340 of residue as the output cable port is connected on the UTP cable 250 that connects repeater 300 and video recording apparatus 400.
By four couples of UTP that are included in the 2nd UTP cable 250 that is connected on the output UTP cableport 340 four difference video signals are transferred in the video recording apparatus 400, these four difference video signals are to transmit from video deriving means (ch.1-ch.4) by four the UTP cables (202-208) that are connected on four UTP cableports (332-338).
Fig. 9 B is explanation is connected to the repeater devices of analog video deriving means according to the use UTP cable of a specific embodiment of this present general inventive concept a block diagram.
With reference to figure 9B, repeater 300 can comprise power connector 310, PoE hub 320 and six UTP cableport 332-342.
The power that PoE hub 320 is imported power connector 310 by four the UTP cables (202-208) that are connected to four UTP cableports (332-338) offers video deriving means (ch.1-ch.4)
That is to say, if repeater 300 connects video deriving means 100 and networks, so repeater 300 comprise with difference video signal output to video recording apparatus 400 be used to export the port 340 of difference video signal and network flow outputed to the port 342 that is used for output network stream on the network.
Be provided with the port 340 that is used to export difference video signal and connect the UTP cable of repeater devices 300 and video recording apparatus 400, and be provided with the UTP cable that the port 342 that is used for output network stream connects repeater devices 300 and network.
Fig. 9 C is explanation is connected to the repeater devices of analog video deriving means according to the use UTP cable of another specific embodiment of this present general inventive concept a block diagram.
With reference to figure 9C, repeater devices 300 can comprise power connector 310, PoE hub 320, seven UTP cableports (332-342 and 360) and switch units 350.Power connector 310, PoE hub 320 and six UTP cableports (332-342) are carried out and the described identical function of Fig. 9 B.
If because the network error in based on network CCTV system and the mistake that do not obtain monitor area information occurs is avoided the omission of monitor area information by transmitting difference video signal so.
Figure 10 is the block diagram according to a kind of video recording apparatus of a specific embodiment of this present general inventive concept.
With reference to Figure 10, video recording apparatus 400 can comprise actuation unit 411, audio input end 412, audio signal processor 413, audio output 414, differential signal input 415, difference video processor 420, video signal preprocessor 430, display message generation unit 431, video output terminals 432, memory cell 433, recording medium 434 and controller 435.
The audio signal that audio signal processor 413 decodings send from audio input end 412, and the audio signal that will decode offers audio output 414 and the recording medium 434 that will make an explanation below.
The vision signal that video signal preprocessor 430 decodings send from difference video processor 420, and the vision signal that will decode offers display message generation unit 431 and the recording medium 434 that will make an explanation below.
Display message generation unit 431 generates and is used for display message that video recording apparatus 400 is provided with and controls, and the display message that is produced is exported individually or with exporting from the vision signal of video signal preprocessor 430.
The vision signal that video output terminals 432 will receive from display message generation unit 431 sends to the external video display unit.
Recording medium 434 comes store video and audio signal by the recording medium interface that is provided in video recording apparatus 400.For example, recording medium can be tape or dish, CD, memory stick or the like.
Optimize picture quality for the gain by compensating general vision signal and at least one in the frequency response characteristic, controller 435 is also controlled the amplifieroperation of difference video processor 420 according to the value of setting of compensating elements.
In addition, for the value of setting of compensating elements is set, controller 435 generates compensating elements by display message generation unit 431 window is set, and the compensating elements that will generate is provided with window and outputs in the external video display unit, so that the value of setting of compensating elements is set according to the input of user's operation.
In addition, controller 435 is provided with the value of setting of compensating elements automatically according to the value of setting of storage in memory cell 433, and the length of transmission line of the difference video signal that it has been imported according to the user was provided with.Carry out the meticulous adjustment of the value of setting by the input of user's operation.Especially, by as above describing the vision signal that compensates output according to being provided with of compensating elements, so that the vision signal that will compensate directly shows.
Therefore, the quality of output video is enhanced, and the user can be provided with the compensating elements of video at an easy rate, so that improve user convenience.
Figure 11 is the view of explanation according to the input of the video recording apparatus of a specific embodiment of this present general inventive concept.
With reference to Figure 11, differential signal input 415 is set in the back of video recording apparatus 400.That is to say that Figure 11 is the rearview of the video recording apparatus 400 that is provided with in the 16 channel C CTV systems shown in Fig. 5, and this differential signal input 415 comprises four inputs.Because the video that is obtained by four passages is sent on the UTP cable, 16 videos that passage obtained are sent on four UTP cables.
Especially, differential signal input 415 comprises four inputs, it comprises the input that is connected on the UTP cable that is used to transmit the video that is obtained by passage 1-4, be connected to the input on the UTP cable that is used to transmit the video that is obtained by passage 5-8, be connected to the input on the UTP cable that is used to transmit the video that is obtained by passage 9-12, and be connected to the input on the UTP cable that is used to transmit the video that is obtained by passage 13-16.
Traditionally, if the CCTV system is connected on the coaxial cable, video recording apparatus comprises 16 inputs, but comprises four inputs according to 16 channel C CTV systems of the specific embodiment of this present general inventive concept.
Figure 12 is the view of explanation according to the difference video processor of the video recording apparatus of a specific embodiment of this present general inventive concept.
With reference to Figure 12, difference video processor 420 can comprise digital-to-analogue (D/A) transducer 421, the first variable gain amplifiers 422 and second variable gain amplifier 426.
If the value of setting such as gain and the such compensating elements of frequency response characteristic is set up according to the input that the user operates, controller 435 is sent to this value of setting in the D/A converter 421 so.
D/A converter 421 is changed the value of setting that sends in the slave controller 435, and exports as the value that voltage will be changed.D/A converter 421 will output in first variable gain amplifier 422 corresponding to the voltage of the response value of setting of adjusting frequency, and will output in second variable gain amplifier 426 corresponding to the voltage of the gain adjustment value of setting.
First variable gain amplifier 422 can comprise first voltage control multiplication (multiplication) device 423 and first operational amplifier (OP AMP) 425, and second variable gain amplifier 426 can comprise second voltage control multiplication (multiplication) device 428 and second operational amplifier (OP AMP) 429.
First and second variable gain amplifiers 422 and 426 use R
GThe voltage level of difference video signal that will be by differential signal input 415 input is converted to electric current I
RGTo be applied to electric current I according to the value of setting that the value of setting and the gain of frequency response adjustment are adjusted by voltage control multiplication (multiplication) device 423 and 428 that is included in first and second variable gain amplifiers 422 and 426
RGUse the electric current I of the corresponding value of setting
RGBe sent on the amplifying stage among the first and second OP AMP425 and 429 with current feedback structure.
First variable gain amplifier 422 is adjusted the frequency response of difference video signal according to this value of setting, and second variable gain amplifier 426 is according to the gain of the variable vision signal of this value of setting adjustment, and exports this adjusted value.The output of second variable gain amplifier 426 is operated in the amplifying stage of first variable gain amplifier 422 as feedback current, so that output final video signal.
Figure 13 is the view of display message that be used to control difference video signal of explanation according to a specific embodiment of this present general inventive concept.
Figure 13 is the view that is described as follows content, screen 510 promptly is set, the detailed compensating elements that compensating elements is provided with window 520 and external video display unit is provided with screen 530, and wherein the combination demonstration is provided with such display message such as channel, screen setting and compensating elements on the external video display unit.
Compensating elements is provided with value of setting (Gain (gain), Freq (frequency)) that window 520 presents the compensating elements of whole distances (Distance) of UTP cable and Set For Current.If selected to compensate one that is provided with in the window 520, will show that so detailed compensating elements is provided with screen 530.
If the user is provided with the distance of having imported transmission line on the screen 530 in detailed compensating elements, according to input value gain and frequency are set on preset value so.Then, can be according to the meticulous compensating elements that is provided with of user's input.
Figure 14 is the flow chart of explanation according to the control method of the video recording apparatus of a specific embodiment of this present general inventive concept.
With reference to Figure 14, in operation S610, controller 435 control display message generation units 431 are so that the output display message is provided with compensating elements.
Then, in operation S620, controller 435 confirms that according to the display message of exporting whether the user is by operating unit 411 input length of transmission line in operation S610.
If confirm that length of transmission line is transfused to, in operation 630, controller 435 is provided with the value of compensating elements automatically so that mate with the transmission line length length of input so.Otherwise in operation S650, controller 435 judges whether to be provided with by operating unit 411 inputs the meticulous adjustment of compensating elements (key element).
For example, controller 435 is provided with compensating elements according to the compensating elements value of presetting and being stored in the memory cell 433 based on length of transmission line.
In operation S640, controller 435 is controlled the amplifieroperation of difference video processor 420 so that vision signal is compensated according to compensating elements is set.Therefore, this outputting video signal is compensated and exports.
In operation S650, controller 435 judges whether to be provided with by operating unit 411 inputs the meticulous adjustment of compensating elements.
If imported meticulous adjustment, controller 435 executable operations S640 once more so is so that outputting video signal is compensated and exports.
The UTP cable comprises four couples of UTP, but this only is a specific embodiment of this present general inventive concept.Therefore, the UTP cable can comprise a plurality of UTP except four couples.Though implement the UTP cable and four video deriving means are connected on the repeater devices with four couples of UTP, this only is a specific embodiment of this present general inventive concept.Therefore, be included in situation in the UTP cable according to for example a plurality of UTP, a plurality of video deriving means except four can be connected on the repeater devices.
This present general inventive concept can also be implemented as the form of the computer-readable code on computer-readable medium.Computer-readable medium can comprise computer readable recording medium storing program for performing and computer-readable transmission medium.This computer readable recording medium storing program for performing is any data storage device, and it can be stored can be by the data that computer system read.The example of computer readable recording medium storing program for performing can comprise read-only memory (ROM), random-access memory (ram), CD-ROM, tape, floppy disk and optical data storage device.Computer readable recording medium storing program for performing can also be distributed on the computer system of network connection, so that computer-readable code can be stored and carry out with the form that distributes.The computer-readable transmission medium can transmit carrier wave or signal (for example, carrying out wired or wireless transfer of data by the Internet).Equally, the programmer in field can easily understand functional program, code and the code segment of realizing this present general inventive concept under this present general inventive concept.
As mentioned above, use the transmission method that the UTP cable suppresses the difference video signal of synchronization noise by use and improved efficiency of transmission.Equally, because the structure of CCTV system becomes simply, so when the CCTV system of UTP cable had been used in use, compared with the traditional C CTV system that uses coaxial cable, the expense of transmission line obtained reducing, and produces convenient.
Be positioned at short-range a plurality of video deriving means and be connected on the repeater devices, and power is offered a plurality of video deriving means, so that reduce to implement to be used to provide the expense of the line of power by repeater devices.Repeater devices will send to from the difference video signal that a plurality of video deriving means obtain by a UTP cable and be positioned at remote video deriving means, so that reduce the expense of implementing transmission line.
Because the structure of transmission line is identical with the structure of the legacy network transmission line that comprises UTP cable and hub, is easily so be transformed into based on network surveillance, and does not need to replace transmission line.
Difference video signal and network flow are by simultaneously or optionally export by the UTP cable.Therefore, when network error occurring, the selected output of difference video signal is omitted so that prevent the information of monitor area.
The user is not having attachment device and transmission line directly to receive difference video signal so that this difference video signal is converted to general vision signal under situation.As a result, when implementing the CCTV system, improved overall system efficiency and simplified system configuration according to the repeater devices of this present general inventive concept specific embodiment.
Traditional difference video signal is to control by mechanically actuated operation, checks by the screen that shows according to the value of setting of using display message and the while control compensation but the user uses repeater devices.Especially, the compensating elements according to length of transmission line except the direct input of compensating elements is set in advance automatically, so that the value of storage is set up.Therefore, user convenience is improved.
Though the various embodiment of this present general inventive concept are described and describe, those skilled in the art understands, under the situation of principle that does not break away from this present general inventive concept and spirit, can make a change on these embodiment, the scope of this present general inventive concept is limited in claim and the equivalent thereof.
Claims (37)
1. repeater devices comprises:
The a plurality of ports that are connected with many cables by a plurality of video deriving means;
The power cell of power is provided to a plurality of video deriving means by described a plurality of ports; And
Output port outputs to a video recording apparatus that cable connect that use comprise many piece circuits by a plurality of vision signals that a plurality of ports send by described output port from a plurality of video deriving means.
2. device as claimed in claim 1 further comprises:
Power over Ethernet (PoE) hub, described Power over Ethernet (PoE) hub will offer a plurality of video deriving means that use a plurality of ports by the power of power cell input, and a plurality of network flows that will send from a plurality of video deriving means that use a plurality of ports output to output port.
3. device as claimed in claim 2 further comprises:
Switch unit, described switch unit are used for switching output port so that a plurality of vision signals that output sends from a plurality of video deriving means that use a plurality of ports and a plurality of network flows of sending from a plurality of video deriving means that use a plurality of ports one.
4. device as claimed in claim 1, wherein:
Described many cables are many unshielded twisted pairs (UTP) cables; And
A described cable is a UTP cable, and the differential signal of a plurality of vision signals that send from a plurality of video deriving means that use a plurality of ports is provided for the corresponding UTP that is included in the UTP cable, and is sent to video recording apparatus.
5. video deriving means comprises:
In order to obtain the shooting unit of vision signal; And
Converting unit, described converting unit use active element to be converted to difference video signal from taking the vision signal that the unit obtain, and the vision signal that will change gained sends to the external device (ED) that uses the cable connection.
6. device as claimed in claim 5, wherein:
External device (ED) is a repeater devices; And further comprise:
Power cell, described power cell be in order to the repeater devices received power from using cable to connect, and power offered take unit and converting unit.
7. device as claimed in claim 5, wherein converting unit comprises:
First and second resistors;
In-phase amplifier, the gain that described in-phase amplifier amplifies in order to the homophase of adjusting vision signal according to the variation of first and second resistors; And
Inverting amplifier, described inverting amplifier is in order to adjust the gain of the anti-phase amplification of vision signal according to the variation of first and second resistors.
8. device as claimed in claim 5 further comprises:
The control signal processor, described control signal processor is in order to control at least one of taking in unit and the converting unit according to the control signal that sends to cable by repeater devices.
9. device as claimed in claim 5 further comprises:
In order to handle the audio process of input audio signal; And
In order to this audio signal is converted to the audio conversion unit of difference audio signal.
10. device as claimed in claim 5, wherein this cable comprises the UTP cable.
11. a video deriving means comprises:
In order to obtain the shooting unit of vision signal; And
Power cell, described power cell be in order to receiving from sending from the power of the repeater devices of taking the vision signal that the unit obtains, and this power is offered the shooting unit.
12. a video deriving means comprises:
In order to obtain the shooting unit of vision signal;
Converting unit, described converting unit use active element to be converted to difference video signal from taking the vision signal that the unit obtain, and the vision signal that will change gained sends to the external device (ED) that uses the cable connection;
Network interface unit, described network interface unit will be in order to being converted to network flow from taking the vision signal that the unit obtained; And
Send and receiving element, described transmission sends to the external device (ED) that uses cable to be connected with receiving element in order to the network flow that will change gained.
13. device as claimed in claim 12, wherein
External device (ED) is a repeater devices; And
Network sends the power that receives and provide the repeater devices that is connected from the use cable with receiving element; And
Further comprise:
Power cell, described power cell offers shooting unit, converting unit and network interface unit in order to the power of future automatic network transmission and receiving element.
14. device as claimed in claim 12, wherein the network sending and receiving device receives the control signal that sends to cable by repeater devices.
15. device as claimed in claim 12, wherein converting unit comprises:
First and second resistors;
In-phase amplifier, the gain that described in-phase amplifier amplifies in order to the homophase of adjusting vision signal according to the variation of first and second resistors; And
Inverting amplifier, described inverting amplifier is in order to adjust the gain of the anti-phase amplification of vision signal according to the variation of first and second resistors.
16. device as claimed in claim 12, wherein this cable comprises the UTP cable.
17. a video recording apparatus comprises:
In order to receive the differential signal input of difference video signal;
Difference video processor, described difference video processor are in order to being converted to difference video signal general vision signal, and the general vision signal of amplifying the conversion gained changeably; And
Recording medium in order to the general vision signal that writes down this amplification.
18. device as claimed in claim 17, wherein the differential signal input comprises a plurality of inputs, and receives a plurality of difference video signals of corresponding input.
19. device as claimed in claim 17 further comprises:
Controller, described controller be in order to controlling the amplifieroperation of difference video processor according to the value of setting of compensating elements, so that the gain by compensating general vision signal and at least one in the frequency response characteristic are optimized picture quality.
20. device as claimed in claim 17, wherein compensating elements comprises: the gain of general vision signal and at least one in the frequency response characteristic, and controller is provided with the value of setting of compensating elements automatically according to the cable length of the transmission difference video signal of user's input.
21. device as claimed in claim 19, its middle controller are adjusted the value of setting of compensating elements automatically according to user's input.
22. device as claimed in claim 17, wherein the difference video processor comprises:
Digital-to-analogue (D/A) transducer, described digital-to-analogue (D/A) transducer is in order to be converted to voltage with the value of setting of frequency response and the value of setting of gain;
First variable gain amplifier, described first variable gain amplifier are adjusted the frequency response of general vision signal in order to basis and the corresponding voltage of the frequency response value of setting that is converted; And
Second variable gain amplifier, described second variable gain amplifier are adjusted the gain of general vision signal in order to basis and the corresponding voltage of the value of setting of the gain that is converted.
23. device as claimed in claim 20, wherein cable comprises the UTP cable.
24. a surveillance comprises:
Video deriving means, described video deriving means be in order to obtaining the vision signal of monitor area, and the vision signal that this obtains is converted to difference video signal and network flow;
Repeater devices, described repeater devices provides power to the video deriving means in order to the cable that use to connect the video deriving means, and one of the difference video signal that the video deriving means is sent and network flow output to a cable with many circuits; And
Video recording apparatus, described video recording apparatus is converted to general vision signal in order to this difference video signal of cable output of use being connected to repeater devices, amplifying the general vision signal of conversion gained changeably, and writes down this amplifying signal.
25. system as claimed in claim 24 wherein connects repeater devices and video deriving means and is connected video recording apparatus and the cable of repeater devices comprises the UTP cable.
26. a video system comprises:
One or more in order to obtain the video deriving means of vision signal;
Video recording apparatus in order to recorded video signal; And
Repeater devices, described repeater devices be in order to one or more video deriving means and the video recording apparatus of being coupled,
Wherein, repeater devices is coupled to video recording apparatus by unshielded twisted pair (UTP) cable.
27. video system as claimed in claim 26, wherein:
This UTP cable has twisted-pair feeder, and the quantity of described twisted-pair feeder is corresponding to the quantity of one or more video recording apparatus.
28. video system as claimed in claim 27 further comprises:
Many UTP cables, described many UTP cables are in order to be connected to repeater devices with one or more video deriving means, and wherein the quantity of many UTP cables is corresponding to the quantity of one or more video-units.
29. the repeater devices that network can be used, this device comprises:
In order to export first output port of one or more difference video signals;
In order to export second output port of one or more network flows; And
Switch unit, described switch unit are used for switching between first output port and second output port with predetermined interval detection network state and state Network Based.
30. repeater devices as claimed in claim 29, wherein:
When the state that detects corresponding to network error, switch unit switches to first output port to export one or more difference video signals.
31. a method of improving vision signal, this method may further comprise the steps:
The output display message is to be provided with one or more compensating elements of vision signal; And
Display message according to output confirms whether the user has imported length of transmission line, if so that obtain confirming,
The value of the one or more compensating elements corresponding with the length of transmission line of input is set so automatically; And
Compensate this vision signal according to being provided with of one or more compensating elements.
32. method as claimed in claim 31 further comprises:
Determine whether to have imported adjustment to set compensating elements, and if compensate this vision signal according to being provided with of one or more compensating elements so.
33. method as claimed in claim 32 further comprises:
By the vision signal of video recording apparatus record through compensation.
34. a method of operating video system, the method comprising the steps of:
Obtain vision signal by one or more video deriving means;
To offer repeater devices from the vision signal that one or more deriving means obtained; And
By unshielded twisted pair (UTP) cable the vision signal of being obtained is offered video recording apparatus from repeater devices.
35. a method of operating repeater devices, the method comprising the steps of:
Detect network state with predetermined space; And
Based on network state, switching in order to first output port of exporting one or more difference video signals with between in order to second output port of exporting one or more network flows, when detecting state corresponding to network error with box lunch, switch unit switches in order to export first output port of one or more difference video signals.
36. the method for an operation monitoring system, the method comprising the steps of:
Obtain the vision signal of monitor area by the video deriving means;
By the video deriving means vision signal of being obtained is converted to difference video signal and network flow;
Use the cable that connects the video deriving means, power is offered the video deriving means by repeater devices;
To output to a cable from difference video signal and the network flow that the video deriving means sends by repeater devices with many circuits; And
By video recording apparatus,, amplify the general vision signal of conversion gained changeably, and write down this amplifying signal using the difference video signal of a cable output that connects repeater devices to be converted to general vision signal.
37. a computer readable recording medium storing program for performing that has the computer program of carrying out a kind of method on it, wherein the method comprising the steps of:
Detect network state with predetermined space; And
Based on network state, switching in order to first output port of exporting one or more difference video signals with between in order to second output port of exporting one or more network flows, when detecting the network error state with box lunch, switch unit switches in order to export first output port of one or more difference video signals.
Applications Claiming Priority (6)
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| KR20060080963 | 2006-08-25 | ||
| KR1020060080963 | 2006-08-25 | ||
| KR10-2006-0080963 | 2006-08-25 | ||
| KR1020070022386A KR20080012121A (en) | 2006-08-25 | 2007-03-07 | Relay apparatus linking image acquirement apparatus and image recording apparatus using unshielded twist pair cable |
| KR1020070022386 | 2007-03-07 | ||
| KR10-2007-0022386 | 2007-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101179714A true CN101179714A (en) | 2008-05-14 |
| CN101179714B CN101179714B (en) | 2012-06-27 |
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| CN2007101999427A Expired - Fee Related CN101179714B (en) | 2006-08-25 | 2007-08-24 | Repeater apparatus linking video acquirement apparatus and video recording apparatus using unshielded twisted pair cable |
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| Country | Link |
|---|---|
| KR (1) | KR20080012121A (en) |
| CN (1) | CN101179714B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012185A (en) * | 2017-11-30 | 2018-05-08 | 杭州众传数字设备有限公司 | A kind of network audio decoder |
| CN108040237A (en) * | 2015-07-24 | 2018-05-15 | 金钱猫科技股份有限公司 | A kind of Video Monitor System of achievable data priority distribution |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101029466B1 (en) * | 2009-07-27 | 2011-04-18 | 주영두 | System of transmitting-receiving with dual video signal and operating method thereof |
| KR101054563B1 (en) * | 2011-02-25 | 2011-08-04 | 강원식 | Image transfer system using unshielded twisted pair wire, providing method thereof and camera apparatus using unshielded twisted pair wire |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266183Y (en) * | 1996-07-05 | 1997-10-29 | 江苏宝胜集团公司 | High-speed, high performance data communication cable for computer network |
| CN1262089C (en) * | 2002-12-16 | 2006-06-28 | 西安西邮双维通信技术有限公司 | Method and apparatus for realizing long distance power supply and LAN |
-
2007
- 2007-03-07 KR KR1020070022386A patent/KR20080012121A/en not_active Application Discontinuation
- 2007-08-24 CN CN2007101999427A patent/CN101179714B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108040237A (en) * | 2015-07-24 | 2018-05-15 | 金钱猫科技股份有限公司 | A kind of Video Monitor System of achievable data priority distribution |
| CN108040237B (en) * | 2015-07-24 | 2019-09-10 | 金钱猫科技股份有限公司 | A kind of Video Monitor System of achievable data priority distribution |
| CN108012185A (en) * | 2017-11-30 | 2018-05-08 | 杭州众传数字设备有限公司 | A kind of network audio decoder |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080012121A (en) | 2008-02-11 |
| CN101179714B (en) | 2012-06-27 |
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