CN1347619A - Wireless video surveillance system - Google Patents
Wireless video surveillance system Download PDFInfo
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- CN1347619A CN1347619A CN00806513A CN00806513A CN1347619A CN 1347619 A CN1347619 A CN 1347619A CN 00806513 A CN00806513 A CN 00806513A CN 00806513 A CN00806513 A CN 00806513A CN 1347619 A CN1347619 A CN 1347619A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19678—User interface
- G08B13/19684—Portable terminal, e.g. mobile phone, used for viewing video remotely
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19654—Details concerning communication with a camera
- G08B13/19658—Telephone systems used to communicate with a camera, e.g. PSTN, GSM, POTS
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/107—Selection of coding mode or of prediction mode between spatial and temporal predictive coding, e.g. picture refresh
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
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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
- H04N5/7755—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver the recorder being connected to, or coupled with, the antenna of the television receiver
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Closed-Circuit Television Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Television Signal Processing For Recording (AREA)
- Telephonic Communication Services (AREA)
Abstract
A wireless video surveillance system incorporating a video recording means recording video images, an interface means converting the video images to transmittable data, and a portable monitor device for receiving the transmittable data, converting the data to video images and displaying the video images. The video recording means is suitably a commercially available video camera and the portable monitor device is suitably a commercially available personal digital assistant. In one form, the PDA is able to transmit control signals to the interface means to control the video recording means. Other devices, such as an external data storage, movement detectors, sound detectors and light switches, may also be interfaced with the interface module.
Description
Technical field
The present invention relates to a kind of wireless video supervision and communicating devices and method.Especially, the present invention relates to a kind of apparatus and method of available commercial use such as personal information manager and the personal digital assistant, hand-held portable set.
Background technology
Such as 3COM Palm Pilot
RIt is very universal that the use of the PDA(Personal Digital Assistant) of palmtop PC and so on is just becoming.The functional difference of PDA between each manufacturer but an all LCD, input equipment, memory and processor units of all comprising.Various improvement are constantly carried out so that increase free memory, raising disposal ability and expanding software application.
Recently, the PDA manufacturer has released the equipment with colour liquid crystal display device and performance for wireless communications.This innovation has been supposed to provide the PDA of the internet access with surfing on the net and Email to promote.For same purpose, similarly market pressure promotes handling property is comprehensively visited so that simplify straight-forward network among mobile phone.
PDA and mobile phone combined, and thereby a kind of integrated system that provides complete speech and data transfer equipment is provided also is known.A such system has been described in the U.S. Patent No. 5625673 that Co., Ltd of Lucent Technologies is had.This patent has been described a kind of PDA, and it comprises and is used for the wireless device that is connected to special attachment such as cell phone and modulator-demodulator.
The performance of PDA also is not extended for the video monitor Application for Field.Existing surveillance, for example the house safety system does not provide the video monitor ability usually.When such performance was provided, it was linked on the base station that the remote handle supervision is provided usually.
Most existing surveillance is utilized a local processing center, and its packing data is used to send to the base station.Can maybe can connect by dedicated land-line and transmit by one group of formula of crying.
An object of the present invention is to provide the apparatus and method that a kind of wireless video monitors.
Summary of the invention
In a form, though it needs not be unique, perhaps even broad form, the present invention is present in the wireless video surveillance system, comprising:
The portable watch-dog and first radio communication device; One or more video recording apparatus are used to write down the video image of a scene; With
At least one interface module, its described video image is converted to and can transmits data; Described interface module is used for going to described portable watch-dog from the described data transmission that transmits of described at least one interface module in conjunction with one second radio communication device; Described portable watch-dog merges device and is used to receive the described data that transmit, and the described data that transmit are converted to described video image and show described video image.
Preferably, this portable watch-dog is that personal digital assistant or similarly hand-held processing unit merge processor device, storage device and video display device one by one.
This video recording apparatus can be a digital camera or can be a similar video camera that commerce is available, for example a Camcorder
R(camcorder).
Suitably, this interface module comprises: input unit is used for receiving the vision signal from described video recording apparatus.A suitable input port is a USB port that is used for the digital video input.If use an analog video tape deck, then this input unit can comprise a video inputs mouth and analog/digital converting device suitably.
Interface module preferably also will comprise: be used for described video image is converted to processing unit and one or more transmission buffer that can transmit data.
This wireless launcher be suitably a sender unit but preferably signal receives and emitter.
Utilize video and audio compression algorithm to come the processing unit of DLL (dynamic link library) module suitably.In the processor device of portable watch-dog, write corresponding audio ﹠ video decompression algorithm suitably.
Portable watch-dog also comprises suitably: input unit is used to import and is transmitted into the signal that described interface module is gone.Preferably, described first radio communication device comprises and is used to launch the device of described signal and described second radio communication device comprises the device that is used to receive described signal.
In the another one form, a kind of providing in the method that wireless video monitors is provided in the present invention, and the method comprising the steps of:
The video image of a scene of record;
Handle document image so that be formed for the data of wireless transmission; Give a portable watch-dog this data transmission; With handle these data so that on portable watch-dog, show this image.
Handling document image preferably includes and compresses this image at the interface arrangement place and in the step of this image that decompresses at portable watch-dog place.
This method can also comprise the step of storing described data in order to transmit after a while.
Description of drawings
Below with reference to following accompanying drawing the preferred embodiments of the present invention are described, in the accompanying drawing:
Fig. 1 is the block diagram of the first embodiment of the present invention;
Fig. 2 is the block diagram of first embodiment of interface module;
Fig. 3 is the block diagram of second embodiment of interface module;
Fig. 4 is the block diagram of the 3rd embodiment of interface module;
Fig. 5 is the block diagram of portable video monitor;
Fig. 6 is the block diagram of the second embodiment of the present invention; With
Fig. 7 is the block diagram of the third embodiment of the present invention.
Preferred forms
Referring to Fig. 1, show the block diagram of a wireless video surveillance system here, this wireless video surveillance system comprises a video recording apparatus 1, and it is connected with interface module 2 signals, and interface module 2 is connected with antenna 3 signals.Transmit 4 between antenna 3 and the antenna 5 relevant with portable watch-dog 6, portable watch-dog 6 is personal digital assistant or portable personal computer one by one.Come the video image of self-recorder 1 to be displayed on the display 7 of monitor 6.
Video and audio signal is transmitted into portable monitor equipment and control signal can be transmitted into interface module from portable watch-dog from interface module.
It in video recording apparatus 1 the available VHS video recorder of a kind of commerce with normal video and audio frequency output.Other video formats can comprise PAL, NTSC, SVHS, BETACAM, RGB, SECAM and DVD.
In Fig. 2, illustrate in greater detail first preferred embodiment of interface module 2.In this embodiment, interface module is configured to transmit signals to portable watch-dog but is not configured to received signal.Come the input of the video of self-recorder 1 and audio frequency to be transfused to and among analog digital converter 9, be converted into digital form by port 8.Be buffered in two frame buffers 10 from the output of ADC and be used to be input to a digital signal processor 11.
Alternately, can use a digital camera as video recording apparatus 1.In this case, the numeral output from video camera can directly be input in two frame buffers 10 by USB port 12.Though in the preferred embodiment, described a USB port, should be appreciated that other interface protocol that also can use such as SCSI, IEEE 1394 or the like.
In digital signal processing chip 11, handle the digital signal that is used to transmit.Needed processing will be depended on employed transmission network and known signal processing and can use compression algorithm.H.261 suitable algorithm comprise, H.263, MPEGI, MPEG2, MPEG4 or the like.Provide on the plate of the data that random access storage device 13 is provided for signal processing and store.
Realize that it also is suitable that hardware is realized though described a kind of software of signal processing.In one embodiment, can use an ASIC (ASIC(Application Specific Integrated Circuit))/FPGA (zone programming gate array) solution to carry out signal processing.Alternately, an ASIC front end can be used with a programmable DSP rear end.The present invention is not limited to any one of these possible solutions.
If use a DSP solution, then utilize this DSP that programmes of available compressed software.Though it is suitable that the inventor allows 8 and 24 coding methods become, the present invention is not limited to any specific software solution.Different coding methods may be more suitable for some available in the extensive diversity of PDA on current market colour video display unit.New coding solution is to be fit to available regularly and the inventor admits that the present invention can use in the future new algorithm.
Selected video-frequency compression method will be realized three basic stages.Phase I is carried out temporary transient decorrelation, is also referred to as interframe encode.This processing comprises an optional module based on the motion compensation step, is temporary transient prediction and additional after it.Which part of definite like this picture frame has changed and has optionally sent lastest imformation so that regenerate this change.This has eliminated when not had in time extensively to change transmitting the needs of entire image at every turn.The byproduct in this stage is: output is used in and triggers an alarm that sends to video-frequency monitor when detecting any action.Depend on employed coding method, can carry out quantification this moment.
Next stage is decomposed into the basic coding unit to the synthetic inter frame image from preceding step.The different in kind of these unit, this depends on employed coding method.In the coding method based on conversion of classics, these coding units are the 2D block of spatial frequency coefficients.These similarly can be the images that stems from another form, for example, and stroke vector (run lengthvector) or uniform colored block.The value of coding unit then basically by quantization so that eliminate unnecessary information.This processing is considered to intraframe coding.
Final stage comprises rearranges compressibility that the code element that will be encoded or numerical value makes that some forms of strengthening variable-length or statistics ground foundation coding follow so that all can produce a bit stream closely effectively for each frame.This final stage is almost always loss-free.This result's bit stream suitably is packaged in the frame grouping then is used for being inserted into output stream.
Audio coding also will be implemented in the stage at DSP.In one embodiment, use the ADPCM compression method of a standard.The GSM speech coding also will be used for using with integrated PDA/ mobile phone scheme.
For each frame of the video that compresses and launch, equate that the audio frame of duration also will be compressed and send.In this way, the situation of the system's control frame in data flow, the superior structure of the data flow that is launched will be made up of the mutual video and the audio frame that exist with a kind of interleaving mode.
Deal with data was buffered in the transmission buffer 14 before by transmitter module 15 emissions.Transmitter module 15 can be any suitable wireless transmitting system, for example: CDMA (code division multiple access), TDMA (time division multiple access), IP (wireless Internet agreement), PHS (personnel hand system), LMDS (local multiple spot sends professional), wireless ATM, GSM, GPRS, HSCSD and other 3G wireless networks.Below alternative embodiment will be discussed at length.
Should be appreciated that the element of interface module does not need to be contained in the individual equipment by physical package.For example, transmitter module can be separated from the remainder of interface module.For a wireless WAN agreement, transport module can be to be connected to GSM or cdma base station on the remainder of interface module by modulator-demodulator or ISDN.If communication protocol is WLAN (wireless local area network) (WLAN), then transmitter module can be connected to an independent base station or WAP (wireless access point) is gone by Ethernet.Transmitter module also can be a television frequency modulator so that allow this equipment to may a minitube within scope launching.
Second embodiment of interface module as shown in Figure 3.This embodiment is configured to portable watch-dog is transmitted and receives control signal.DSP is replaced by the CPU16 of a general purpose.The same with first embodiment, video and audio signal is received at input 8 places, by the ADC9 digitlization, and is buffered among the DFB10.Can directly be imported in input 12 from the signal of digital source.
RAM13 is used for local storage, and an external memory equipment 17 also is provided simultaneously.External memory equipment allows to store large-capacity data, can visit it by the signal from portable watch-dog.The external memory equipment of two types can be provided.Unpressed analog video data must be stored among the VCR, by an order, read-only access addressable it.Compressed numerical data can be stored on any one of some suitable equipment (comprising that disk drive, digital magnetic tape driver, CD ROM, DVD, WORM drive or the like) with read-write random access.Here a plurality of external memory devices can be arranged.
The historical record that this external memory equipment allows to store video and audio signal is used for constantly looking back after a while.An application of this configuration is the removal and the storage of record such as video and voiced band, is used for using in possibility because by the caused legal procedure of the detected secret destruction of the present invention.Other application are discussed below.
Transmission/reception 18 sends and received signal 4.Provide some buffers 19 to be used to transmit and receive.An output device 20 provides the analog or digital signal to be used to control each miscellaneous equipment in response to the signal of receiving from portable watch-dog at port 21.For example, can be used for turning on light from a signal in the suitable watch-dog or turn off the light, reset a motion detector or external alarm or beginning videograph.In an application, can be used for beginning a playback that is stored in the prerecord program on the external memory equipment 17 from the signal in the portable watch-dog.
The 3rd embodiment of interface module 2 as shown in Figure 4.This embodiment is different from second embodiment, and it has realized a plurality of address data bus 22.This embodiment has promoted the use of a plurality of external memory equipment and a plurality of output devices.It also can realize a plurality of input sources, and each all has a unique address can selecting these input sources from portable watch-dog.This embodiment provides maximum adaptability to wireless video surveillance system.For example, the classification that is connected to the equipment of interface module can comprise some video cameras, one or more outside moving detector and a plurality of control line (for example optical switch).The detection of moving will produce an alarm signal, and it is launched into portable watch-dog.The user will launch a signal then so that select from this detected mobile that nearest video camera.Video is displayed among the LCD7 of monitor 6 then.
The critical elements of portable watch-dog 6 is illustrated among Fig. 5 in more detail.This monitor comprises a reception/transmitter module 23, is used to receive by the data of interface module 2 emissions with to these interface module emission data.Provide some buffers 24 to be used to transmit and receive.In CPU25, handle received signal.The RAM26 storage is used for the data and the parameter of signal processing on the plate.The image of handling is displayed on the LCD 7.The control signal of input is handled and is transmitted to interface module 2 by CPU25 on circuit 27.
Portable watch-dog can be that the wireless network that can have a graphic alphanumeric display and a general purpose processor is connected any equipment.PDA is because their practicality forms to first-selection, but the many mobile phones such as wap phone and I-NET phone also are fit to.Nature, the equipment of purposes structure also will be fit to.The inventor think self-defined DSP and standard P DA are carried out the mixing apparatus of interface will be of great use.In this form, the video decode processing can not be in the CPU of PDA but be performed in self-defined DSP.
Fig. 6 represents an embodiment, and wherein, a VHS video camera 28 is connected on the interface module 29, and it provides the antenna 31 of a low-power signal 30 to a local area network (LAN).This embodiment can have a typical range 150m of signal 30.The middle infrared (Mid-IR) signal also is fit to though use at point-to-point, and signal 30 is radiofrequency signal normally.
Watch-dog 33 is personal digital assistants one by one, and it has wireless network card 34 and antenna 32 so that received signal 30.Wireless network card 34 is by a PCMCIA groove, closely glisten port or other Extended Capabilities Port and interface on this personal digital assistant.
The embodiment of Fig. 6 provides single worker's video to communicate by letter with full-duplex audio.It is suitable in the home applications most---for child's thought and fail safe.For example, father and mother can use this structure to monitor the sleep of child in an independent room.Another purposes is to monitor an access road.Full-duplex audio allows to communicate simultaneously with a people who looks for inlet, and single worker's video channel allows to check this people.
Therefore the major advantage of Fig. 6 embodiment is that video-frequency monitor is of portable form that the user moves freely around can being in.Should be appreciated that this is a significantly improvement on the system of the guarantee of prior art and child's thought.
As the application of longer scope, the embodiment of Fig. 7 is preferably.A digital video camcorder 35 provides the audio ﹠ video input to interface module 36.Transmitter module 37 is standard telephone interface, is used for transmitting 38 by a CDMA or GSM cellular phone network from antenna 39.Watch-dog comprises personal digital assistant 40 one by one, and it has the modulator-demodulator 41 that is connected on the phone 42.This PDA is utilized that algorithm is programmed so that handle this reception data for demonstration.
In the distortion of this embodiment, PDA and phone are integrated in the individual equipment.The equipment that matches has become commercial available recently.
As above mentioned, this embodiment provides single worker's video and duplexing voice communication.Second embodiment provides duplexing audio frequency by phone.The duplexing voice communication of first embodiment can come or provides by an outside transmitter that is coupled on the network interface card by being provided in built-in transmitter among some PDA.
Store by this locality that audio ﹠ video footage (can check it according to the order from monitor) is provided and to expand these embodiment.If so move and the sound measuring ability also has been provided in to detect in checking sight in the interface module and moves or a sound then alarm can be provided.The mobile detection that merges, sound detection and local video storage are useful especially for second embodiment, promote to dial the formula of crying and operate.
In a method of operation, interface module is configured to detect moving in the scope of checking.When detecting when mobile, the video footage is stored by this locality and sends a calling to portable watch-dog.Telephone key-press or duplexing voice-grade channel can be used to send tone commands so that trigger the playback of the video footage of this storage then.The major advantage of this system is: do not need a fixed radio station with permanent monitoring just can provide fail safe.
External memory can be used to the data of a fixed cycle of storage in one or more FIFO buffers.The size of FIFO buffer (with the length of recording of video therefore) can be that the user is provided with variable.When detecting when mobile, the user can select to check a video from a kind of fixed cycle before alarm.
Should be appreciated that a plurality of video cameras and interface module may be programmed on the single or multiple video-frequency monitors.Therefore, some security personnel guards to carry the personal digital assistant of the mobile monitor that a plurality of camera apparatus are provided will be possible.
Though top embodiment only provides single worker's video communication, should be appreciated that, the present invention is not limited to this realization.Providing of single worker rather than duplexing video is owing to available disposal ability among the commercial PDA causes.The disposal ability of improvement will allow the PDA operation to allow the compression of video image and the software of emission.For duplexing video transmission, can be added to a video recording apparatus on this portable watch-dog.
Should be appreciated that the procotol that matches must be used for guaranteeing by Radio Link video data to be transmitted into remote monitor reliably.These can be the connection of guiding, for example TCP; Or there are not connection, for example a UDP.The character of agreement will change according to character, bandwidth and the characteristic of channel of employed wireless network.Agreement must be carried out following function: ERROR CONTROL; Flow control; Packing; Connect and set up; And link management.
The existing protocol that many purposes are for this reason arranged, it has been designed to use with data network.Under the video situation, because because the real-time restriction that the character of video is forced in reception of launching data and processing, the repeating transmission that worsens data is inappropriate, so may need special attentiveness to handle mistake.
In order to handle this situation, provide following ERROR CONTROL scheme.
(1) video data frame each send to receiver, each all have a verification and or additional cyclic redundancy check (CRC) estimate whether this frame is received mistakenly so that start receiver;
If (2a) do not have mistake, then normally handle this frame;
If (2b) this frame is wrong, then abandons this frame and send first status message, the numbering of the picture frame that indication makes mistakes to transmitter;
(3) video transmitter stops to send all predictive frames and changes next effective key frame of transmission immediately into to receiver after receiving such error state message;
(4) after sending key frame, encoded image frame is till receiving another error state message between transmitter recovery transmission normal frame.
A key frame is a picture frame, and it is only by intraframe coding rather than interframe encode.Interframe encode be present in carry out the local of prediction processing and after according to all aforesaid picture frames and comprise that previous keyframe produces these frames.Key frame only is sent out as first frame and whenever mistake takes place.First frame need be a key frame, does not handle because predict from where carrying out interframe encode at preceding frame.
Though it is point-to-point that main application is expected to be, a broadcasting realizes it also being possible.In this case, for single base station a plurality of monitors can be arranged.This realization may be particularly useful in the factory safety application, and at this, some guards monitor the fail safe of factory from each position.
Can also be attached in the system so that when portable watch-dog is lost or be stolen, the danger of unauthorized use is minimized security verified.Suitable security protocol should be well known by persons skilled in the art.
Described purpose in whole detail specifications, the present invention is not restricted to the present invention any concrete combination of feature.
Claims (20)
1. wireless video surveillance system comprises:
At least one the portable watch-dog and first radio communication device;
One or more video recording apparatus are used to write down the video image of a scene; With
At least one interface module, its described video image is converted to and can transmits data; One second radio communication device is connected with described interface module, is used for going to described portable watch-dog from the described data transmission that transmits of described at least one interface module; Described portable watch-dog merges device and is used to receive the described data that transmit, and the described data that transmit are converted to described video image and show described video image.
2. wireless video surveillance system as claimed in claim 1, wherein, portable watch-dog is that personal digital assistant or similarly hand-held processing unit merge processor device, storage device and video display device one by one.
3. wireless video surveillance system as claimed in claim 1, wherein, interface module comprises: input unit is used for receiving the vision signal from described video recording apparatus.
4. wireless video surveillance system as claimed in claim 1, wherein, video recording apparatus is a digital camera.
5. wireless video surveillance system as claimed in claim 1, wherein, video recording apparatus is a similar video camera.
6. wireless video surveillance system as claimed in claim 5, wherein, interface module comprises: video input device and analog/digital converting device.
7. wireless video surveillance system as claimed in claim 1, wherein, interface module comprises and is used for described video image is converted to processing unit and one or more transmission buffer that can transmit data.
8. wireless video surveillance system as claimed in claim 7 wherein, utilizes video and audio compression algorithm to come the programmed process device.
9. wireless video surveillance system as claimed in claim 1, wherein, interface module comprises: the processing unit that utilizes video and audio compression algorithm to programme.And wherein, portable watch-dog merges a processor device that utilizes corresponding audio ﹠ video decompression algorithm to programme.
10. wireless video surveillance system as claimed in claim 1, wherein, first radio transmitting device is a signal receiving device.
11. wireless video surveillance system as claimed in claim 1, wherein, first radio transmitting device is that a signal receives and emitter.
12. wireless video surveillance system as claimed in claim 1, wherein, second radio transmitting device is a sender unit.
13. wireless video surveillance system as claimed in claim 1, wherein, second radio transmitting device is that a signal receives and emitter.
14. wireless video surveillance system as claimed in claim 1, wherein, second radio communication device and described interface module are whole.
15. wireless video surveillance system as claimed in claim 1, wherein, portable watch-dog comprises: input unit is used to import and is transmitted into the signal that described interface module is gone.
16. wireless video surveillance system as claimed in claim 15, wherein, described first radio communication device comprises and is used to launch the device of described signal and described second radio communication device comprises the device that is used to receive described signal.
17. a method that provides wireless video to monitor, the method comprising the steps of:
The video image of a scene of record;
Handle document image so that be formed for the data of wireless transmission; Give a portable watch-dog this data transmission; With handle these data so that on portable watch-dog, show this image.
18. method as claimed in claim 17, wherein, the step of handling document image is included in that the interface arrangement place compresses this image and the further step of this image that decompresses at portable watch-dog place.
19. method as claimed in claim 17 also comprises the step of storing described data in order to transmit after a while.
20. method as claimed in claim 17 also comprises following host-host protocol step:
Data are launched as independent video data frame, described independent frame comprises key frame and predictive frame, thereby each frame comprise a verification and or additional cyclic redundancy check (CRC) estimate whether this frame is received mistakenly so that start a receiver at portable watch-dog place, if this frame is wrong, then abandon this frame and launch status message first, indicating this frame is a wrong identifier; Stop the emission of predictive frame and launch next effective key frame; With recovery emission predictive frame after the emission key frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPP9901 | 1999-04-22 | ||
| AUPP9901A AUPP990199A0 (en) | 1999-04-22 | 1999-04-22 | Wireless video surveillance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1347619A true CN1347619A (en) | 2002-05-01 |
Family
ID=3814101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00806513A Pending CN1347619A (en) | 1999-04-22 | 2000-04-26 | Wireless video surveillance system |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1172004A1 (en) |
| JP (1) | JP2003504985A (en) |
| KR (1) | KR20010112444A (en) |
| CN (1) | CN1347619A (en) |
| AU (1) | AUPP990199A0 (en) |
| WO (1) | WO2001006791A1 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004093449A1 (en) * | 2003-04-18 | 2004-10-28 | Netac Technology Co., Ltd. | A digital image processing apparatus and the method thereof |
| CN1310553C (en) * | 2004-01-31 | 2007-04-11 | 乐金电子(中国)研究开发中心有限公司 | Method for storing real time display image data through mobile communication terminal |
| CN100382599C (en) * | 2005-09-12 | 2008-04-16 | 朱水林 | Liaison method and device |
| CN100384094C (en) * | 2003-02-11 | 2008-04-23 | 郑然庚 | Wireless camera with CDMA module and motion picture transmission system using the same |
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- 2000-04-26 CN CN00806513A patent/CN1347619A/en active Pending
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- 2000-04-26 JP JP2001510489A patent/JP2003504985A/en active Pending
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| TWI551967B (en) * | 2014-05-28 | 2016-10-01 | 國立高雄第一科技大學 | Event-oriented process monitoring and backtracking method and computer product thereof |
| WO2017024713A1 (en) * | 2015-08-11 | 2017-02-16 | 小米科技有限责任公司 | Video image controlling method, apparatus and terminal |
| CN109151480A (en) * | 2017-06-16 | 2019-01-04 | 宝山钢铁股份有限公司 | A kind of Video coding wireless transmission and reception device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1172004A1 (en) | 2002-01-16 |
| JP2003504985A (en) | 2003-02-04 |
| KR20010112444A (en) | 2001-12-20 |
| AUPP990199A0 (en) | 1999-05-13 |
| WO2001006791A1 (en) | 2001-01-25 |
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