CN101783945A - Method for implementing train video monitoring, encoder and monitoring equipment - Google Patents

Abstract

The invention provides a method for implementing train video monitoring, which comprises that: an encoder acquires video signals provided by video acquisition equipment; the encoder encodes the video signals by using an image format corresponding to the first resolution and an image format corresponding to the second resolution respectively, wherein the first resolution is higher than the second resolution; before receiving the trigger of data acquired by encoding in the image format corresponding to the first resolution, the encoder provides data acquired by encoding in the image format corresponding to the second resolution for monitoring equipment or a ground monitoring system, and stores the data acquired by encoding in the image format corresponding to the first resolution; and after receiving the trigger of the data acquired by encoding in the image format corresponding to the first resolution, the encoder provides data, which is acquired by encoding the video signals in the image format corresponding to the first resolution after receiving the trigger, for the monitoring equipment or the ground monitoring system.

Description

Implementing train video monitoring, encoder and watch-dog

Technical field

The present invention relates to the video monitoring technology, relate in particular to implementing train video monitoring, encoder and watch-dog.

Background technology

For guaranteeing train safe, the operation stably on track traffic and the railway, guarantee passenger, passenger's life security, guarantee that goods is not impaired, also in order to obtain to handle the foundation of accident on the train, track traffic department and railway interests press for train are carried out video monitoring.

Present a kind of train-installed video monitoring system that is used for train is carried out video monitoring as shown in Figure 1.

Drivers' cab is equipped with camera, encoder, switch, touch display screen and memory device etc.Camera can be issued encoder with vision signal, encoder is to encoding video signal, and the data that obtain after will encoding are issued touch display screen by switch, touch display screen can be converted to the data that obtain behind the coding touch display screen can video image displayed, and display video image, in addition, touch display screen can be with the storage that obtains behind the coding in memory device.

The guest room is equipped with camera, encoder and switch.Camera can be issued encoder with vision signal, encoder is to encoding video signal, and the data that obtain after will encoding are issued touch display screen by train network (specifically can be meant between the switch of switch, drivers' cab of guest room mutual), touch display screen can be converted to the data that obtain behind the coding touch display screen can video image displayed, and display video image, in addition, touch display screen can be with the storage that obtains behind the coding in memory device.

The present inventor finds after scrutinizing above-mentioned prior art: for the consideration of multiple factor, encoder generally can be with the picture format of lower resolution correspondence to encoding video signal, in this case, the resolution of touch display screen video image displayed also can be lower.The staff who uses touch display screen so also can only be according to the lower video image work of resolution if desired according to video image work.If the staff of use touch display screen need be according to the higher video image work of resolution, touch display screen can't provide resolution higher video image so.

Summary of the invention

The invention provides implementing train video monitoring, encoder, watch-dog and train-installed video monitoring system, with thinking that the staff of track traffic department and railway interests provides higher being used to of resolution to reflect the video image of train operating conditions.

The invention provides a kind of implementing train video monitoring, be applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described method comprises: encoder obtains the vision signal that video capture device provides; Described encoder uses the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to encoding video signal respectively, and wherein, described first resolution is higher than described second resolution; Obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence at described encoder, described encoder provides the data that obtain behind the picture format coding that uses the second resolution correspondence to described watch-dog or ground monitoring system, and the data that obtain behind the picture format coding of the first resolution correspondence are used in storage, wherein, described ground monitoring system is arranged on the supervisory control system on ground; After the triggering of the data that after described encoder obtains to provide the picture format coding that uses the first resolution correspondence, obtain, the data that described encoder provides the picture format that uses the first resolution correspondence to obtain after to the video signal coding that obtains to obtain after the described triggering to described watch-dog or ground monitoring system.

The invention provides a kind of encoder, be applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described encoder comprises: vision signal obtains the unit, is used to obtain the vision signal that video capture device provides; Coding unit is used for using respectively the picture format of the first resolution correspondence and the picture format of the second resolution correspondence that described vision signal is obtained the encoding video signal that the unit obtains, and wherein, described first resolution is higher than described second resolution; Trigger obtaining the unit, be used to obtain to provide the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence; Data provide the unit, and being used for provides the data that obtain behind the described coding unit coding to watch-dog or ground monitoring system; Memory cell is used to store the data that obtain behind the described coding unit coding; Before described triggering acquisition unit obtains to provide the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence, the data that described data provide the unit to obtain behind the picture format coding that described watch-dog or ground monitoring system provide described coding unit to use the second resolution correspondence, the described coding unit of described cell stores are used the data that obtain behind the picture format coding of the first resolution correspondence; After described triggering obtains triggering that the unit obtains to provide the data that obtain behind the picture format coding that uses the first resolution correspondence, the data that described data provide the unit to obtain after described watch-dog or ground monitoring system provide picture format that described coding unit uses the first resolution correspondence to the video signal coding that obtains the unit in described triggering and obtain to obtain after the described triggering.

The invention provides a kind of implementing train video monitoring, be applicable to and comprise video capture device, the train-installed video monitoring system of encoder and watch-dog, described method comprises: at video capture device, behind encoder and the watch-dog power-up initializing, the data that the picture format that watch-dog or ground monitoring system obtain the use second resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that uses the second resolution correspondence is obtained after to video signal coding are converted to the video image with second resolution, and show the video image with second resolution; Since a moment, the data that the picture format that described watch-dog or ground monitoring system obtain the use first resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that uses the first resolution correspondence is obtained after to video signal coding are converted to the video image with first resolution, and show video image with first resolution, wherein, described first resolution is higher than described second resolution.

The invention provides a kind of watch-dog, described watch-dog setting is ON TRAINS or in the ground monitoring system, described watch-dog is applicable to the train-installed video monitoring system that comprises video capture device and encoder, described watch-dog comprises: data obtain the unit, are used to obtain the data to obtaining behind the video signal coding that encoder provides; Date Conversion Unit is used for the data that described data acquisition unit obtains are converted to video image; The video image display unit is used to show the video image after described Date Conversion Unit is changed; Wherein, at video capture device, behind encoder and the watch-dog power-up initializing, described data obtain the data that picture format that the unit specifically is used to obtain the use second resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that described Date Conversion Unit specifically is used for described data are obtained the use second resolution correspondence that the unit obtains obtains after to video signal coding are converted to the video image with second resolution, and described video image display unit specifically is used to show the video image with second resolution after the described Date Conversion Unit conversion; Wherein, since a moment, described data obtain the data that picture format that the unit specifically is used to obtain the use first resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that described Date Conversion Unit specifically is used for described data are obtained the use first resolution correspondence that the unit obtains obtains after to video signal coding are converted to the video image with first resolution, described video image display unit specifically is used to show the video image with first resolution after described Date Conversion Unit is changed, wherein, described first resolution is higher than described second resolution.

The present invention also provides a kind of train-installed video monitoring system, comprising: video capture device, encoder and watch-dog; Video capture device is used to gather video image, outputting video signal; Encoder, be used for using respectively the video signal coding of the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to described video capture device output, data after obtaining encoding, wherein, described first resolution is higher than described second resolution; Watch-dog is used to obtain the data behind the coding that described encoder provides; Obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence at described encoder, described encoder specifically is used for providing the data that obtain behind the picture format coding that uses the second resolution correspondence to described watch-dog, and the data that obtain behind the picture format coding of the first resolution correspondence are used in storage; After the triggering of the data that obtain after described encoder obtains to provide the picture format coding that uses the first resolution correspondence, data from the video signal coding that obtains to obtain after the described triggering to described watch-dog that provide the picture format that uses the first resolution correspondence to obtain after to specifically are provided described encoder.

In above-mentioned several technical schemes, after encoder obtains vision signal, the picture format that uses the picture format of a higher resolution correspondence and a lower resolution correspondence respectively is to encoding video signal, obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence at encoder, encoder provides the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog, after the triggering of the data that obtain after encoder obtains to provide the picture format coding that uses the high-resolution correspondence, encoder provides the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog.In this case, when the staff who uses watch-dog or ground monitoring system need check the video image of high definition, the staff can trigger encoder the data that obtain behind the picture format coding that uses the high-resolution correspondence are provided, like this, watch-dog or ground monitoring system can provide resolution higher video image for the staff, carry out the work thereby be convenient to the staff.

The invention provides a kind of implementing train video monitoring, be applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described method comprises: encoder obtains the vision signal that video capture device provides; Described encoder uses the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to encoding video signal respectively, and wherein, described first resolution is higher than described second resolution; Described encoder provides the data that obtain after data that obtain behind the picture format coding that uses the first resolution correspondence and the picture format coding that uses the second resolution correspondence to described watch-dog or ground monitoring system.

The invention provides a kind of encoder, be applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described encoder comprises: vision signal obtains the unit, is used to obtain the vision signal that video capture device provides; Coding unit is used for using respectively the picture format of the first resolution correspondence and the picture format of the second resolution correspondence that described vision signal is obtained the encoding video signal that the unit obtains, and wherein, described first resolution is higher than described second resolution; Data provide the unit, are used for the data that obtain behind data that obtain behind the picture format coding that watch-dog or ground monitoring system provide described coding unit to use the first resolution correspondence and the picture format coding that uses the second resolution correspondence.

The invention provides a kind of implementing train video monitoring, be applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described method comprises: the data that data that the picture format that watch-dog or ground monitoring system obtain the use first resolution correspondence that encoder provides obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding, and described first resolution is higher than described second resolution; The data that data that the picture format that the first resolution correspondence is used in the storage of described watch-dog or ground monitoring system obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding.

The invention provides a kind of watch-dog, described watch-dog setting is ON TRAINS or in the ground monitoring system, described watch-dog is applicable to the train-installed video monitoring system that comprises video capture device and encoder, described watch-dog comprises: data obtain the unit, the data that data that the picture format that is used to obtain the use first resolution correspondence that encoder provides obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding; Data storage cell is used to store described data and obtains the data that the data that picture format that encoder that the unit obtains uses the first resolution correspondence obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding.

The present invention also provides a kind of train-installed video monitoring system, comprising: video capture device, encoder and watch-dog; Video capture device is used to gather video image, outputting video signal; Encoder, be used for using respectively the video signal coding of the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to described video capture device output, data after obtaining encoding, wherein, described first resolution is higher than described second resolution; Watch-dog, the data after being used to obtain and store the data behind the picture format coding of the use first resolution correspondence that described encoder provides and using the picture format coding of the second resolution correspondence.

In above-mentioned several technical schemes, after encoder obtains vision signal, the picture format that uses the picture format of a higher resolution correspondence and a lower resolution correspondence respectively is to encoding video signal, and provides the data that obtain after data that obtain behind the picture format coding that uses the high-resolution correspondence and the picture format coding that uses the low resolution correspondence to the watch-dog or the ground monitoring system that are provided with ON TRAINS.In this case, acquisition encoder that watch-dog on the train or ground monitoring system can continue uses the data that obtain behind the picture format coding of high-resolution correspondence, and therefore watch-dog on the train or ground monitoring system can provide resolution higher video image for using the watch-dog on the train or the staff of ground monitoring system.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is a kind of schematic diagram that is used for train is carried out the train-installed video monitoring system of video monitoring;

Fig. 2 is the flow chart of a kind of implementing train video monitoring of the present invention;

Fig. 3 is the logical construction schematic diagram of a kind of encoder of the present invention;

Fig. 4 is the flow chart of a kind of implementing train video monitoring of the present invention;

Fig. 5 is the logical construction schematic diagram of a kind of watch-dog of the present invention;

Fig. 6 is the flow chart of a kind of implementing train video monitoring of the present invention;

Fig. 7 is the logical construction schematic diagram of a kind of encoder of the present invention;

Fig. 8 is the flow chart of a kind of implementing train video monitoring of the present invention;

Fig. 9 is the logical construction schematic diagram of a kind of watch-dog of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

More clearly understand the present invention for ease of those skilled in the art, at first introduce some professional knowledges that the present invention relates to.

In the present invention, no matter be that train on track traffic or the railway can be equipped with the video capture device that is used to gather video image, for example camera.Video capture device can be installed in train inside, for example is installed on the ceiling of train inside or on the wall of train inside, is used to gather the video image of train inside.Video capture device also can be installed in train exterior, for example is installed on the vehicle body of train exterior or near the bogie, is used to gather the video image of train exterior, particularly gathers the video image of train operation situation.Certainly, video capture device can also be installed other positions ON TRAINS, and in actual applications, the installation site of video capture device is designed according to actual needs by those skilled in the art, illustrates no longer one by one here.

All embodiment of the present invention are applicable to the train-installed video monitoring system that comprises video capture device and encoder.Watch-dog is installed if desired ON TRAINS, and so train-installed video monitoring system also comprises watch-dog.Watch-dog can comprise touch display screen and memory device, watch-dog also can be one not only to have had Presentation Function, but also had had the single devices of data processing and memory function, certainly, watch-dog can also be other forms of equipment, as long as have Presentation Function and data processing function, certainly, if desired, watch-dog also can have data storage function.

Train-installed video monitoring system shown in Figure 1 is a kind of applied environment of the embodiment of the invention.As shown in Figure 1, drivers' cab is equipped with camera, encoder, switch, touch display screen and memory device, and each guest room all is equipped with camera, encoder and switch.

As shown in Figure 1, in train-installed video monitoring system running, the encoder that is installed in the guest room can will arrive the touch display screen of drivers' cab to the data passes that obtains behind the video signal coding by switch and bus structures.Here need to prove, train-installed video monitoring system shown in Figure 1 adopts wired mode Data transmission, promptly adopt bus-structured mode Data transmission, in actual applications, train-installed video monitoring system also can adopt wireless mode Data transmission, for example, switch can be replaced with wireless device, like this, data after being installed in encoder in the guest room and will encoding are issued corresponding wireless device, data-modulated after corresponding wireless device will be encoded is the wireless device that wireless signal is issued the drivers' cab correspondence, the wireless device demodulation wireless signal of drivers' cab correspondence, obtain the data behind the above-mentioned coding, and the data passes after will encoding is given touch display screen.

Need to prove that watch-dog shown in Figure 1 is mounted in drivers' cab, in actual applications, watch-dog also can be installed in train chief in the guest room seat of handling official business, so that train chief and other staff monitor the train operation situation.Certainly, watch-dog also can be installed in other positions in the train, and the concrete position of installing and the quantity of watch-dog can be designed according to actual needs by those skilled in the art.

Need to prove, if camera, encoder, switch, touch display screen and the memory device that will be installed in the drivers' cab are considered as a subsystem, the camera, encoder and the switch that are installed in the guest room are considered as a subsystem, and the position and the quantity of the subsystem of permutation train installation also can flexible design so.For example, only in some guest room subsystem is installed, subsystem is not installed in some guest rooms.In addition, an existing drivers' cab in compartment of some motor train unit, the guest room is arranged again, in this case, the subsystem of drivers' cab correspondence can be installed in drivers' cab, the subsystem of guest room correspondence is installed in the guest room in the compartment at drivers' cab place,, a subsystem can only be installed for the compartment that has only a guest room in the motor train unit.For the train of forming by locomotive and vehicle, the subsystem of drivers' cab correspondence can be installed in the driver's cabin of locomotive, the subsystem of guest room correspondence is installed in vehicle.

Need to prove that train shown in Figure 1 is a passenger train, in actual applications, goods train also can be installed train-installed video monitoring system.For example, general goods train all is made up of locomotive and vehicle, the subsystem of drivers' cab correspondence can be installed in the driver's cabin of locomotive, the subsystem of guest room correspondence is installed in vehicle, at this moment, the camera collection in the subsystem of guest room correspondence is the video images such as state of goods in the vehicle.

Need to prove that in addition in actual applications, the installation site of camera and quantity also can be designed according to actual needs by those skilled in the art.For example, the inside and outside of drivers' cab can be installed at least one camera respectively, and same, the inside and outside of guest room also can be installed at least one camera respectively.

Technical scheme of the present invention both can be described from the angle of encoder, also can describe from the angle of watch-dog or ground monitoring system, can also describe from the angle of whole train-installed video monitoring system.

At first technical scheme of the present invention is described from the angle of encoder.As shown in Figure 2, a kind of implementing train video monitoring comprises:

S201: encoder obtains the vision signal that video capture device provides.

Concrete, video capture device for example is a camera.Video capture device is gathered the video image of corresponding region, generates vision signal, and vision signal is offered video capture device corresponding codes device, and like this, the corresponding codes device has just obtained the vision signal that video capture device provides.For example, the video image of the camera collection drivers' cab corresponding region of drivers' cab correspondence generates vision signal, and vision signal is offered drivers' cab corresponding codes device.Again for example, the video image of the camera collection drivers' cab corresponding region of guest room correspondence generates vision signal, and vision signal is offered guest room corresponding codes device.

S202: described encoder uses the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to encoding video signal respectively, and wherein, described first resolution is higher than described second resolution.

Concrete, after encoder obtained vision signal, the picture format that use certain resolution correspondence was to encoding video signal.In the present embodiment, encoder will use the corresponding respectively picture format of two resolution to come same encoding video signal, these two resolution differences, and a resolution is higher, and a resolution is lower.Video image with high-resolution is comparatively clear, and the video image with low resolution is comparatively fuzzy.In other words, the video image of the picture format of high-resolution correspondence is more clear than the video image of the picture format of low resolution correspondence.In actual applications, those skilled in the art can be provided with a threshold value for resolution, and this threshold value is used for determining the height of resolution, for example, the resolution that meets or exceeds this threshold value is high-resolution, and the resolution that is lower than this threshold value is low resolution.This threshold value for example is the resolution of D1 form or 4CIF form correspondence, concrete resolution can be 704 * 576, the D1 form is meant the standard display format of digital television system, the 4CIF form is a kind of form of CIF form, and CIF is the standardized images form of using always (Common IntermediateFormat).In the present embodiment, first resolution is high-resolution, second resolution is low resolution, first resolution can be not less than the resolution of D1 form or 4CIF form correspondence, for example be 720 * 576, second resolution can for example be the resolution 352 * 288 of CIF form correspondence less than the resolution of D1 form or 4CIF form correspondence.

S203: obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence at described encoder, described encoder provides the data that obtain behind the picture format coding that uses the second resolution correspondence to described watch-dog or ground monitoring system, and the data that obtain behind the picture format coding of the first resolution correspondence are used in storage, wherein, described ground monitoring system is arranged on the supervisory control system on ground.

If encoder does not have to obtain to provide the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence, perhaps, obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence at encoder, what encoder can continue provides the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog or ground monitoring system, and does not provide the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog or ground monitoring system.Simultaneously, encoder can be stored the data that obtain behind the picture format coding that uses the high-resolution correspondence, and in this case, encoder need have certain data storage capacity, uses the data that obtain behind the picture format coding of high-resolution correspondence with storage.

In actual applications, encoder can adopt the mode of formation to store the data that obtain behind the picture format coding of use high-resolution correspondence.Encoder also can be stored the data that obtain behind the use high-resolution coding that meets the Preset Time condition, for example store the data that obtain behind the use high-resolution coding of current time in a period of time before, described a period of time can be the short time, for example 10 minutes.In addition, encoder also can be stored the data that obtain behind the use high-resolution coding that meets other conditions, for example, and the data that obtain behind the use high-resolution coding of the video capture device correspondence of storage appointment.Certainly, encoder also can be stored the data that obtain behind the use high-resolution coding in conjunction with conditions such as Preset Times in the mode that adopts formation.

S204: after the triggering of the data that after described encoder obtains to provide the picture format coding that uses the first resolution correspondence, obtain, the data that described encoder provides the picture format that uses the first resolution correspondence to obtain after to the video signal coding that obtains to obtain after the described triggering to described watch-dog or ground monitoring system.

If encoder obtains to provide the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence, perhaps, after the triggering of the data that after encoder obtains to provide the picture format coding that uses the high-resolution correspondence, obtain, the data that provide the picture format that uses the high-resolution correspondence to obtain after to the video signal coding that obtains to obtain after the described triggering to watch-dog or ground monitoring system that encoder can begin to continue.

Optionally, if encoder obtains to provide the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence, perhaps, after the triggering of the data that after encoder obtains to provide the picture format coding that uses the high-resolution correspondence, obtain, encoder can no longer provide the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog or ground monitoring system, certainly, also can not re-use the picture format of low resolution correspondence to encoding video signal.

In actual applications, encoder is before obtaining above-mentioned triggering, the data that obtain behind the picture format coding of use high-resolution correspondence of some may have been stored, in this case, encoder is after obtaining above-mentioned triggering, the data that obtain after can the picture format coding with the use high-resolution correspondence of having stored offer watch-dog or ground monitoring system, in other words, after the triggering of the data that obtain after encoder obtains to provide the picture format coding that uses the high-resolution correspondence, encoder can provide the data that obtain behind the picture format coding of the use high-resolution correspondence of having stored before the above-mentioned triggering of acquisition to watch-dog or ground monitoring system.Like this, watch-dog not only can obtain encoder and use the data that obtain behind the picture format coding of high-resolution correspondence after obtaining above-mentioned triggering, can also obtain encoder and use the data that obtain behind the picture format coding of high-resolution correspondence before obtaining above-mentioned triggering.

Need to prove that it can be the triggering of various ways that the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence is provided.For example, watch-dog or ground monitoring system can send the request message that the data that obtain behind the picture format coding that uses the high-resolution correspondence are provided to encoder, like this, encoder has obtained the request message that the data that obtain behind the picture format coding that uses the high-resolution correspondence are provided that watch-dog or ground monitoring system send.For example, have the trigger equipment that triggers function and sent triggering signal, encoder has obtained this triggering signal, trigger equipment with triggering function for example is the smoke sensing device on the train, when certain smoke sensing device has been sensed the smog on the train, this smoke sensing device can send triggering signal, and the encoder nearest from this smoke sensing device can obtain triggering signal.Certainly, in actual applications, can be that switch or wireless device obtain triggering signal earlier, afterwards, switch or wireless device are issued encoder with triggering signal, and like this, encoder has just obtained triggering signal.Certainly, encoder can also obtain the other forms of triggering that the data that obtain behind the picture format coding that uses the high-resolution correspondence are provided, and illustrates no longer one by one here.

Need to prove, encoder before the data that obtain behind the picture format coding that uses the second resolution correspondence are provided to watch-dog or ground monitoring system, simultaneously or afterwards, can also store the data that obtain behind the picture format coding that uses the low resolution correspondence.That is to say that encoder both can have been stored the data that obtain behind the picture format coding that uses the high-resolution correspondence, also can store the data that obtain behind the picture format coding that uses the low resolution correspondence.In this case, watch-dog or ground monitoring system can not stored the data that obtain behind the picture format coding that uses the low resolution correspondence, can save the memory capacity of watch-dog or ground monitoring system like this, reduce the realization cost of watch-dog or ground monitoring system.In addition, encoder can adopt the mode of formation to store the data that obtain behind the picture format coding of use low resolution correspondence.

Need to prove that if train-installed video monitoring system adopts wired mode to transmit data, the encoder of guest room can transmit data to watch-dog by switch and bus structures so.If train-installed video monitoring system adopts wireless mode to transmit data, the encoder of guest room can transmit data to watch-dog by wireless device so.Owing to can adopt wireless mode to transmit data between train and the ground monitoring system, so encoder can pass through wireless device supervisory control system transmission data earthward.

Need to prove, if in the some moment of encoder after watch-dog or ground monitoring system provide the data that the picture format that uses the high-resolution correspondence obtains after to the video signal coding that obtains to obtain after the above-mentioned triggering, encoder obtains to stop the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence to be provided or to obtain beginning provides the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog or ground monitoring system triggering to watch-dog or ground monitoring system, encoder can stop to provide the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog or ground monitoring system so, and what begin to continue provides the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog or ground monitoring system.Optionally, the data that obtain after can also the picture format coding with storage before the above-mentioned moment and use low resolution correspondence that do not offer watch-dog or ground monitoring system of encoder offer watch-dog or ground monitoring system.

Corresponding to above-mentioned method embodiment, the present invention also provides a kind of encoder.As shown in Figure 3, this encoder comprises: vision signal obtains unit 301, is used to obtain the vision signal that video capture device provides; Coding unit 302 is used for using respectively the picture format of the first resolution correspondence and the picture format of the second resolution correspondence that vision signal is obtained the encoding video signal that unit 301 obtains, and wherein, described first resolution is higher than described second resolution; Trigger obtaining unit 303, be used to obtain to provide the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence; Data provide unit 304, and being used for provides the data that obtain behind coding unit 302 codings to watch-dog or ground monitoring system; Memory cell 305 is used for the data that obtain behind memory encoding unit 302 codings; Before the triggering that the data that obtain after acquisition unit 303 obtains to provide the picture format that uses the first resolution correspondence to encode are provided, data provide unit 304 to provide the data that obtain behind the picture format coding of the coding unit 302 uses second resolution correspondence to described watch-dog or ground monitoring system, and memory cell 305 memory encoding unit 302 use the data that obtain behind the picture format coding of the first resolution correspondence; After trigger obtaining the triggering that unit 303 obtains to provide the data that obtain behind the picture format coding that uses the first resolution correspondence, data provide unit 304 to provide picture format that coding unit 302 uses the first resolution correspondence to obtain the data that obtain behind the video signal coding that unit 303 obtains to obtain after the described triggering to triggering to described watch-dog or ground monitoring system.

Memory cell 305 specifically can be used to adopt the mode of formation to store the data that obtain behind the picture format coding that uses the first resolution correspondence.Memory cell 305 specifically can be used to store the data that obtain behind the picture format coding of the use first resolution correspondence that meets the Preset Time condition.Memory cell 305 also can be stored the data that obtain behind the picture format coding of the use first resolution correspondence that meets other conditions, for example, and the data that obtain behind the picture format coding of the use first resolution correspondence of the video capture device correspondence of storage appointment.Certainly, memory cell 305 also can be in the mode that adopts formation, and in conjunction with conditions such as Preset Times, the data that obtain behind the picture format coding of the first resolution correspondence are used in storage.

Trigger to obtain unit 303 and specifically can be used to obtain the request message that the data that obtain behind the picture format coding that uses the first resolution correspondence are provided that described watch-dog or ground monitoring system send, perhaps, trigger to obtain unit 303 and specifically can be used to obtain to have the triggering signal that the trigger equipment that triggers function sends.

After the triggering that triggers the data that obtain after 303 acquisitions of acquisition unit provide the picture format that uses the first resolution correspondence to encode, data provide unit 304 to provide described memory cell triggering the data that obtain behind the picture format coding of the use first resolution correspondence of having stored before the described triggering of acquisition unit 303 acquisitions to described watch-dog or ground monitoring system.

Memory cell 305 can data provide unit 304 before the data that obtain behind the picture format coding that described watch-dog or ground monitoring system provide coding unit 302 to use the second resolution correspondence, simultaneously or afterwards, memory encoding unit 302 uses the data that obtain behind the picture format coding of the second resolution correspondence.

Because above-mentioned encoder embodiment is corresponding with above-mentioned method embodiment, so the specific descriptions of above-mentioned encoder embodiment can repeat no more here referring to the associated description among the above-mentioned method embodiment.

From the angle of watch-dog or ground monitoring system technical scheme of the present invention is described below.As shown in Figure 4, a kind of implementing train video monitoring comprises:

S401: behind video capture device, encoder and watch-dog power-up initializing, the data that the picture format that watch-dog or ground monitoring system obtain the use second resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that uses the second resolution correspondence is obtained after to video signal coding are converted to the video image with second resolution, and show the video image with second resolution.

Behind video capture device, encoder and watch-dog power-up initializing, if each encoder does not all have to obtain to provide the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence, what each encoder can only continue so provides the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog or ground monitoring system.

After watch-dog or ground monitoring system obtain to use the data that obtain behind the picture format coding of low resolution correspondence, can will use the data that obtain behind the picture format coding of low resolution correspondence to be converted to video image, and show the video image of low resolution with low resolution.

Watch-dog or ground monitoring system can also be stored the data that obtain behind the picture format coding that uses the low resolution correspondence after obtaining to use the data that obtain behind the picture format coding of low resolution correspondence.Watch-dog or ground monitoring system can adopt the mode of formation to store the data that obtain behind the picture format coding of use low resolution correspondence.

S402: since a moment, the data that the picture format that described watch-dog or ground monitoring system obtain the use first resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that uses the first resolution correspondence is obtained after to video signal coding are converted to the video image with first resolution, and show video image with first resolution, wherein, described first resolution is higher than described second resolution.

Beginning sometime after the data that watch-dog or ground monitoring system obtain after continue using the picture format coding of low resolution correspondence, the data that obtain after the picture format that can obtain the use high-resolution correspondence that encoder provides is encoded.For ease of distinguishing constantly, this is called constantly first here constantly with hereinafter another.The data that obtain behind the picture format coding of the use high-resolution correspondence that watch-dog or ground monitoring system obtain both can be included in above-mentioned first constantly before encoder use the data that obtain behind the picture format coding of high-resolution correspondence, also can be included in above-mentioned first constantly after encoder use the data that obtain behind the picture format coding of high-resolution correspondence.Watch-dog or ground monitoring system obtain above-mentioned first constantly before encoder use the data that obtain behind the picture format coding of high-resolution correspondence and above-mentioned first after encoder uses the data that obtain behind the picture format coding of high-resolution correspondence after constantly, can generate and store be included in above-mentioned first constantly before encoder use the data that obtain behind the picture format coding of high-resolution correspondence and above-mentioned first constantly after encoder use the video file of the data that obtain behind the picture format coding of high-resolution correspondence.

Optionally, after the data that watch-dog or ground monitoring system obtain behind the picture format coding of the use high-resolution correspondence that continue to obtain encoder and provide sometime, the data that the picture format of the use low resolution correspondence that the acquisition encoder that may restart to continue provides obtains after encoding.For ease of distinguishing constantly, this is called constantly second here constantly with above-mentioned first.In this case, above-mentioned video file comprise first constantly after encoder to use the data that obtain behind the picture format coding of high-resolution correspondence be watch-dog or ground monitoring system above-mentioned first constantly and the data that obtain behind the picture format coding of the above-mentioned second use high-resolution correspondence that obtains between constantly.

Optionally, after watch-dog or ground monitoring system are stored above-mentioned video file, can obtain to play the triggering of above-mentioned video file, that is to say, the staff of use watch-dog or ground monitoring system can trigger watch-dog or ground monitoring system is play the video file of storage.

Optionally, before above-mentioned first moment, watch-dog or ground monitoring system can send the request message that the data that the picture format that uses the high-resolution correspondence obtains after to video signal coding are provided to encoder, that is to say that watch-dog or ground monitoring system can trigger encoder the data that obtain behind the picture format coding that uses the high-resolution correspondence are provided.In this case, the data that obtain behind the picture format coding of the data that obtain behind the picture format coding of the use high-resolution correspondence that provides of the encoder that obtains of watch-dog or the ground monitoring system use high-resolution correspondence that to be encoders provide according to above-mentioned request message.

Optionally, before watch-dog or ground monitoring system send the request message that the data that the picture format that uses the high-resolution correspondence obtains after to video signal coding are provided to encoder, watch-dog or ground monitoring system can obtain to show the triggering with high-resolution video image, that is to say that the staff of use watch-dog or ground monitoring system can trigger watch-dog and show to have high-resolution video image.In this case, watch-dog or ground monitoring system can have the triggering of high-resolution video image according to the demonstration that obtains, and send the request message that the data that the picture format that uses the high-resolution correspondence obtains after to video signal coding are provided to encoder.

Optionally, watch-dog or ground monitoring system can also generate journal file except that generating the video file, so that use the staff of watch-dog or ground monitoring system to inquire about at any time when work.

The detailed description of some technical characterictics among the said method embodiment can repeat no more here referring to the associated description among the method embodiment shown in Figure 2.

Corresponding to said method embodiment, the present invention also provides a kind of watch-dog, and this watch-dog both can be provided with ON TRAINS, also can be arranged in the ground monitoring system.As shown in Figure 5, this watch-dog comprises: data obtain unit 501, are used to obtain the data to obtaining behind the video signal coding that encoder provides; Date Conversion Unit 502 is used for that data are obtained the data that unit 501 obtains and is converted to video image; Video image display unit 503 is used for the video image after display data conversion unit 502 is changed; Wherein, at video capture device, behind encoder and the watch-dog power-up initializing, data obtain the data that picture format that unit 501 specifically is used to obtain the use second resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that Date Conversion Unit 502 specifically is used for data are obtained the use second resolution correspondence that unit 501 obtains obtains after to video signal coding are converted to the video image with second resolution, and video image display unit 503 specifically is used for the video image with second resolution after display data conversion unit 502 conversions; Wherein, since a moment, data obtain the data that picture format that unit 501 specifically is used to obtain the use first resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that Date Conversion Unit 502 specifically is used for data are obtained the use first resolution correspondence that unit 501 obtains obtains after to video signal coding are converted to the video image with first resolution, video image display unit 503 specifically is used for the video image with first resolution after display data conversion unit 502 conversions, wherein, described first resolution is higher than described second resolution.

The data that the picture format that data obtain the use first resolution correspondence that encoder that unit 501 obtains provides obtains after to video signal coding comprise: data that obtain after picture format that encoder before the above-mentioned moment uses the first resolution correspondence is to video signal coding and the data that obtain after picture format that encoder after the above-mentioned moment uses the first resolution correspondence is to video signal coding.

Above-mentioned watch-dog can also comprise: file generating unit 504, be used for after data obtain data that picture format that unit 501 obtains the use first resolution correspondence that encoders provide obtains after to video signal coding, generate the video file of the data that are included in data that picture format that encoder before the above-mentioned moment uses the first resolution correspondence obtains after to video signal coding and after picture format that encoder after the above-mentioned moment uses the first resolution correspondence is to video signal coding, obtain; File storage unit 505 is used for the video file that storage file generation unit 504 generates.

Above-mentioned watch-dog can also comprise message sending unit 506, is used for before the above-mentioned moment, sends the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to encoder.In this case, the data that obtain after to video signal coding of the picture format of the data that obtain after to video signal coding of the data picture format that obtains the use first resolution correspondence that encoder that unit 501 obtains the provides use first resolution correspondence that to be encoders provide according to above-mentioned request message.

Above-mentioned watch-dog can also comprise that triggering obtains unit 507, be used for before message sending unit 506 is sent the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to encoder, obtaining to show the triggering of video image with first resolution.In this case, message sending unit 506 specifically is used for according to trigger obtaining the triggering that demonstration that unit 507 obtains has the video image of first resolution, sends the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to encoder.

Because above-mentioned watch-dog embodiment is corresponding with method embodiment shown in Figure 4, so the specific descriptions of above-mentioned watch-dog embodiment can repeat no more here referring to the associated description among the method embodiment shown in Figure 4.

Because train-installed video monitoring system both can comprise encoder, can comprise watch-dog again, so the present invention also provides a kind of train-installed video monitoring system, this system comprises: video capture device, encoder and watch-dog; Video capture device is used to gather video image, outputting video signal; Encoder, be used for using respectively the video signal coding of the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to described video capture device output, data after obtaining encoding, wherein, described first resolution is higher than described second resolution; Watch-dog is used to obtain the data behind the coding that described encoder provides; Obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence at described encoder, described encoder specifically is used for providing the data that obtain behind the picture format coding that uses the second resolution correspondence to described watch-dog, and the data that obtain behind the picture format coding of the first resolution correspondence are used in storage; After the triggering of the data that obtain after described encoder obtains to provide the picture format coding that uses the first resolution correspondence, data from the video signal coding that obtains to obtain after the described triggering to described watch-dog that provide the picture format that uses the first resolution correspondence to obtain after to specifically are provided described encoder.

The specific descriptions of above-mentioned system embodiment can repeat no more here referring to the associated description among method embodiment shown in Figure 2, encoder embodiment shown in Figure 3, method embodiment shown in Figure 4 and the watch-dog embodiment shown in Figure 5.

At method embodiment shown in Figure 2, encoder shown in Figure 3, method embodiment shown in Figure 4, among watch-dog embodiment shown in Figure 5 and the above-mentioned train-installed video monitoring system embodiment, after encoder obtains vision signal, the picture format that uses the picture format of a higher resolution correspondence and a lower resolution correspondence respectively is to encoding video signal, obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence at encoder, encoder provides the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog, after the triggering of the data that obtain after encoder obtains to provide the picture format coding that uses the high-resolution correspondence, encoder provides the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog.In this case, when the staff who uses watch-dog or ground monitoring system need check the video image of high definition, when particularly needing accident handled, the staff can trigger encoder the data that obtain behind the picture format coding that uses the high-resolution correspondence are provided, like this, watch-dog or ground monitoring system can provide resolution higher video image for the staff, carry out the work thereby be convenient to the staff.

At method embodiment shown in Figure 2, encoder shown in Figure 3, method embodiment shown in Figure 4, among watch-dog embodiment shown in Figure 5 and the above-mentioned train-installed video monitoring system embodiment, encoder is not before having to obtain to provide the triggering of using the data that obtain behind the high-resolution coding, can only provide the data that obtain behind the picture format coding that uses the low resolution correspondence to watch-dog or ground monitoring system, after the triggering of the data that after obtaining to provide the picture format coding that uses the high-resolution correspondence, obtain, just provide the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog or ground monitoring system.Because it is more than transmitting the employed resource of data that obtains behind the picture format coding that uses the low resolution correspondence to transmit the employed resource of data that obtains behind the picture format coding that uses the high-resolution correspondence, so, after the triggering of the data that after obtaining to provide the picture format coding that uses the high-resolution correspondence, obtain, provide the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog or ground monitoring system, can save resource, reduce and realize cost.

In method embodiment shown in Figure 2, encoder shown in Figure 3, method embodiment shown in Figure 4, watch-dog embodiment shown in Figure 5 and above-mentioned train-installed video monitoring system embodiment, encoder can use the data that obtain behind the picture format coding of high-resolution correspondence with the form short time storage of formation, can save the memory capacity of encoder like this, reduce the realization cost of encoder.

In method embodiment shown in Figure 2, encoder shown in Figure 3, method embodiment shown in Figure 4, watch-dog embodiment shown in Figure 5 and above-mentioned train-installed video monitoring system embodiment, encoder obtains to provide after the triggering of the data that obtain behind the picture format coding that uses the high-resolution correspondence, can to watch-dog or ground monitoring system provide use the data that obtain behind the picture format coding of high-resolution correspondence before obtaining to trigger and obtain to trigger after the data that obtain after using the picture format of high-resolution correspondence to encode.In this case, watch-dog or ground monitoring system not only can obtain to use the data that obtain behind the picture format coding of high-resolution correspondence after encoder obtains to trigger, can also obtain before encoder obtains to trigger, to use the data that obtain behind the picture format coding of high-resolution correspondence, therefore the staff not only can view the data that obtain behind the picture format coding that uses the high-resolution correspondence after encoder obtains to trigger, can also view the data that obtain behind the picture format coding that before encoder obtains to trigger, uses the high-resolution correspondence, improve the trackability of historical data.

In method embodiment shown in Figure 2, encoder shown in Figure 3, method embodiment shown in Figure 4, watch-dog embodiment shown in Figure 5 and above-mentioned train-installed video monitoring system embodiment, encoder provides the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog or ground monitoring system again after obtaining triggering.In fact, encoder also can be after each device power initialization of train-installed video monitoring system, and what continue provides the data that obtain behind the picture format coding that uses the high-resolution correspondence to watch-dog or ground monitoring system.

To this, the present invention provides several technical schemes from the angle of encoder, watch-dog and train-installed video monitoring system respectively again.

At first technical scheme provided by the invention is described from the angle of encoder.As shown in Figure 6, a kind of implementing train video monitoring comprises:

S601: encoder obtains the vision signal that video capture device provides.

The specific descriptions of this step can repeat no more here referring to the associated description among the S201 among the method embodiment shown in Figure 2.

S602: described encoder uses the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to encoding video signal respectively, and wherein, described first resolution is higher than described second resolution.

The specific descriptions of this step can repeat no more here referring to the associated description among the S202 among the method embodiment shown in Figure 2.

S603: described encoder provides the data that obtain after data that obtain behind the picture format coding that uses the first resolution correspondence and the picture format coding that uses the second resolution correspondence to described watch-dog or ground monitoring system.

Encoder can provide the data that obtain after data that obtain behind the picture format coding that uses the high-resolution correspondence and the picture format coding that uses the low resolution correspondence to watch-dog or ground monitoring system simultaneously.

The specific descriptions of some technical characterictics among the said method embodiment can repeat no more here referring to the associated description among the method embodiment shown in Figure 2.

Corresponding to said method embodiment, the invention provides a kind of encoder.As shown in Figure 7, this encoder comprises: vision signal obtains unit 701, is used to obtain the vision signal that video capture device provides; Coding unit 702 is used for using respectively the picture format of the first resolution correspondence and the picture format of the second resolution correspondence that vision signal is obtained the encoding video signal that unit 701 obtains, and wherein, described first resolution is higher than described second resolution; Data provide unit 703, and being used for provides the data that obtain after data that obtain behind the picture format coding of the coding unit 702 uses first resolution correspondence and the picture format coding that uses the second resolution correspondence to watch-dog or ground monitoring system.

Because encoder embodiment shown in Figure 7 is corresponding with method embodiment shown in Figure 6, so the specific descriptions of encoder embodiment shown in Figure 7 can repeat no more here referring to the associated description among the method embodiment shown in Figure 6.

From the angle of watch-dog technical scheme provided by the invention is described again below.As shown in Figure 8, a kind of implementing train video monitoring comprises:

S801: the data that data that the picture format that watch-dog or ground monitoring system obtain the use first resolution correspondence that encoder provides obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding, described first resolution is higher than described second resolution.

Watch-dog or ground monitoring system can obtain the data that picture format that encoder uses two kinds of resolution correspondences respectively obtains after to video signal coding simultaneously.

S802: the data that data that the picture format that the first resolution correspondence is used in the storage of described watch-dog or ground monitoring system obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding.

Watch-dog or ground monitoring system can adopt the mode of formation to store the data that obtain behind the picture format coding of use high-resolution correspondence.Watch-dog or ground monitoring system can be stored the data that obtain behind the picture format coding of the use high-resolution correspondence that meets the Preset Time condition.Watch-dog or ground monitoring system also can be stored the data that obtain behind the picture format coding that meets other pre-conditioned use high-resolution correspondences, for example, the data that obtain behind the picture format coding of the use high-resolution correspondence of the video capture device correspondence of storage appointment.Certainly, watch-dog or ground monitoring system can also be stored the data that obtain behind the picture format coding that uses the high-resolution correspondence in conjunction with conditions such as Preset Times in the mode that adopts formation.

Optionally, watch-dog or ground monitoring system can adopt the mode of formation to store the data that obtain behind the picture format coding of use low resolution correspondence.

Optionally, after the data that data that watch-dog or ground monitoring system obtain after the picture format that obtains the use high-resolution correspondence that encoder provides is to video signal coding and the picture format that uses the low resolution correspondence obtain after to video signal coding, both can have high-resolution video image with using the data that obtain behind the picture format coding of high-resolution correspondence to be converted to, show and have high-resolution video image, can also show video image with using the data that obtain behind the picture format coding of low resolution correspondence to be converted to video image with low resolution with low resolution.

The specific descriptions of some technical characterictics among the said method embodiment can repeat no more here referring to the associated description among the method embodiment shown in Figure 4.

Corresponding to said method embodiment, the present invention also provides a kind of watch-dog, and this watch-dog both can be provided with ON TRAINS, also can be arranged in the ground monitoring system.As shown in Figure 9, this watch-dog comprises: data obtain unit 901, the data that data that the picture format that is used to obtain the use first resolution correspondence that encoder provides obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding; Data storage cell 902 is used to store data and obtains the data that the data that picture format that encoder that unit 901 obtains uses the first resolution correspondence obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding.

Data storage cell 902 specifically can be used to adopt the mode of formation to store the data that obtain behind the picture format coding that uses the first resolution correspondence.Data storage cell 902 specifically can be used to store the data that obtain behind the picture format coding of the use first resolution correspondence that meets the Preset Time condition.Data storage cell 902 also can be stored the data that obtain behind the picture format coding of the use first resolution correspondence that meets other conditions, for example, the data that obtain behind the picture format coding of the use first resolution correspondence of the video capture device correspondence of storage appointment.Certainly, data storage cell 902 also can be stored the data that obtain behind the picture format coding that uses the first resolution correspondence in conjunction with conditions such as Preset Times in the mode that adopts formation.

Because watch-dog embodiment shown in Figure 9 is corresponding with method embodiment shown in Figure 8, so the specific descriptions of watch-dog embodiment shown in Figure 9 can repeat no more here referring to the associated description among the method embodiment shown in Figure 8.

Because train-installed video monitoring system both can comprise encoder, can comprise watch-dog again, so the present invention also provides a kind of train-installed video monitoring system, this system comprises: video capture device, encoder and watch-dog; Video capture device is used to gather video image, outputting video signal; Encoder, be used for using respectively the video signal coding of the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to described video capture device output, data after obtaining encoding, wherein, described first resolution is higher than described second resolution; Watch-dog, the data after being used to obtain and store the data behind the picture format coding of the use first resolution correspondence that described encoder provides and using the picture format coding of the second resolution correspondence.

Optionally, if watch-dog has Presentation Function, watch-dog also can show the video image of the data correspondence that obtains or store so.

The specific descriptions of above-mentioned system embodiment can repeat no more here referring to the associated description among method embodiment shown in Figure 6, encoder embodiment shown in Figure 7, method embodiment shown in Figure 8 and the watch-dog embodiment shown in Figure 9.

At method embodiment shown in Figure 6, encoder embodiment shown in Figure 7, method embodiment shown in Figure 8, in watch-dog embodiment shown in Figure 9 and the above-mentioned system embodiment, after encoder obtains vision signal, the picture format that uses the picture format of a higher resolution correspondence and a lower resolution correspondence respectively is to encoding video signal, and provides the data that obtain after data that obtain behind the picture format coding that uses the high-resolution correspondence and the picture format coding that uses the low resolution correspondence to the watch-dog or the ground monitoring system that are provided with ON TRAINS.In this case, acquisition encoder that watch-dog on the train or ground monitoring system can continue uses the data that obtain behind the picture format coding of high-resolution correspondence, and therefore watch-dog on the train or ground monitoring system can provide resolution higher video image for using the watch-dog on the train or the staff of ground monitoring system.

In method embodiment shown in Figure 6, encoder embodiment shown in Figure 7, method embodiment shown in Figure 8, watch-dog embodiment shown in Figure 9 and above-mentioned system embodiment, watch-dog or ground monitoring system can use the data that obtain behind the picture format coding of high-resolution correspondence with the form short time storage of formation, can save the memory capacity of encoder like this, reduce the realization cost of watch-dog or ground monitoring system.

One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-OnlyMemory, ROM) or at random store memory body (Random Access Memory, RAM) etc.

The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (33)

1. an implementing train video monitoring is characterized in that, is applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, and described method comprises:

Encoder obtains the vision signal that video capture device provides;

Described encoder uses the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to encoding video signal respectively, and wherein, described first resolution is higher than described second resolution;

Obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence at described encoder, described encoder provides the data that obtain behind the picture format coding that uses the second resolution correspondence to described watch-dog or ground monitoring system, and the data that obtain behind the picture format coding of the first resolution correspondence are used in storage, wherein, described ground monitoring system is arranged on the supervisory control system on ground;

After the triggering of the data that after described encoder obtains to provide the picture format coding that uses the first resolution correspondence, obtain, the data that described encoder provides the picture format that uses the first resolution correspondence to obtain after to the video signal coding that obtains to obtain after the described triggering to described watch-dog or ground monitoring system.

2. the method for claim 1, it is characterized in that described encoder is stored the data that obtain behind the picture format coding that uses the first resolution correspondence in the following manner: described encoder adopts the mode of formation to store the data that obtain behind the picture format coding of the use first resolution correspondence.

3. method as claimed in claim 1 or 2, it is characterized in that described encoder is stored the data that obtain behind the picture format coding that uses the first resolution correspondence in the following manner: described encoder stores meets the data that obtain behind the picture format coding of the use first resolution correspondence of Preset Time condition.

4. the method for claim 1, it is characterized in that, described encoder obtains to provide the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence to be specially: described encoder obtains the request message that the data that obtain behind the picture format coding that uses the first resolution correspondence are provided that described watch-dog or ground monitoring system send, perhaps, described encoder obtains to have the triggering signal that the trigger equipment that triggers function sends.

5. method as claimed in claim 1 or 2, it is characterized in that, after the triggering of the data that obtain after described encoder obtains to provide the picture format coding that uses the first resolution correspondence, described method also comprises: described encoder provides the data that obtain behind the picture format coding of the use first resolution correspondence of having stored before the described triggering of acquisition to described watch-dog or ground monitoring system.

6. the method for claim 1, it is characterized in that, before described encoder provides the data that obtain behind the picture format coding that uses the second resolution correspondence to described watch-dog or ground monitoring system, simultaneously or afterwards, also comprise: described encoder stores is used the data that obtain behind the picture format coding of the second resolution correspondence.

7. as claim 1,2,4 or 6 described methods, it is characterized in that the picture format of the described first resolution correspondence is D1 form or 4CIF form, the picture format of the described second resolution correspondence is the CIF form.

8. an encoder is characterized in that, is applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, and described encoder comprises:

Vision signal obtains the unit, is used to obtain the vision signal that video capture device provides;

Coding unit is used for using respectively the picture format of the first resolution correspondence and the picture format of the second resolution correspondence that described vision signal is obtained the encoding video signal that the unit obtains, and wherein, described first resolution is higher than described second resolution;

Trigger obtaining the unit, be used to obtain to provide the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence;

Data provide the unit, and being used for provides the data that obtain behind the described coding unit coding to watch-dog or ground monitoring system;

Memory cell is used to store the data that obtain behind the described coding unit coding;

Before described triggering acquisition unit obtains to provide the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence, the data that described data provide the unit to obtain behind the picture format coding that described watch-dog or ground monitoring system provide described coding unit to use the second resolution correspondence, the described coding unit of described cell stores are used the data that obtain behind the picture format coding of the first resolution correspondence;

After described triggering obtains triggering that the unit obtains to provide the data that obtain behind the picture format coding that uses the first resolution correspondence, the data that described data provide the unit to obtain after described watch-dog or ground monitoring system provide picture format that described coding unit uses the first resolution correspondence to the video signal coding that obtains the unit in described triggering and obtain to obtain after the described triggering.

9. encoder as claimed in claim 8 is characterized in that, described memory cell specifically is used to adopt the mode of formation to store the data that obtain behind the picture format coding that uses the first resolution correspondence.

10. encoder as claimed in claim 8 or 9 is characterized in that, described memory cell specifically is used to store the data that obtain behind the picture format coding of the use first resolution correspondence that meets the Preset Time condition.

11. encoder as claimed in claim 8, it is characterized in that, described triggering obtains the unit and specifically is used to obtain the request message that the data that obtain behind the picture format coding that uses the first resolution correspondence are provided that described watch-dog or ground monitoring system send, perhaps, described triggering obtains the unit and specifically is used to obtain to have the triggering signal that the trigger equipment that triggers function sends.

12. encoder as claimed in claim 8 or 9, it is characterized in that, after described triggering obtained triggering that the unit obtains to provide the data that obtain behind the picture format coding that uses the first resolution correspondence, described data provided the unit to provide described memory cell to obtain the unit in described triggering to described watch-dog or ground monitoring system and obtain the data that obtain behind the picture format coding of the use first resolution correspondence of having stored before the described triggering.

13. encoder as claimed in claim 8, it is characterized in that, described memory cell described data provide the unit before the data that obtain behind the picture format coding that described watch-dog or ground monitoring system provide described coding unit to use the second resolution correspondence, simultaneously or afterwards, store described coding unit and use the data that obtain behind the picture format coding of the second resolution correspondence.

14. an implementing train video monitoring is characterized in that, is applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described method comprises:

Behind video capture device, encoder and watch-dog power-up initializing, the data that the picture format that watch-dog or ground monitoring system obtain the use second resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that uses the second resolution correspondence is obtained after to video signal coding are converted to the video image with second resolution, and show the video image with second resolution;

Since a moment, the data that the picture format that described watch-dog or ground monitoring system obtain the use first resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that uses the first resolution correspondence is obtained after to video signal coding are converted to the video image with first resolution, and show video image with first resolution, wherein, described first resolution is higher than described second resolution.

15. method as claimed in claim 14, it is characterized in that the data that the picture format of the use first resolution correspondence that the encoder that described watch-dog or ground monitoring system obtain provides obtains after to video signal coding comprise: data that after picture format that encoder before the described moment uses the first resolution correspondence is to video signal coding, obtain and the data that after picture format that encoder after the described moment uses the first resolution correspondence is to video signal coding, obtain.

16. method as claimed in claim 15, it is characterized in that, after the data that obtain after picture format that described watch-dog or ground monitoring system obtain the use first resolution correspondence that encoder provides is to video signal coding, described method also comprises: described watch-dog or ground monitoring system generate and store the video file of the data that are included in data that picture format that encoder before the described moment uses the first resolution correspondence obtains after to video signal coding and obtain after picture format that encoder after the described moment uses the first resolution correspondence is to video signal coding.

17. method as claimed in claim 14, it is characterized in that, before the described moment, described method also comprises: described watch-dog or ground monitoring system send the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to described encoder;

The data that the picture format of the data that the picture format of the use first resolution correspondence that the encoder that described watch-dog or ground monitoring system obtain provides obtains after to the video signal coding use first resolution correspondence that to be described encoders provide according to described request message obtains after to video signal coding.

18. method as claimed in claim 17, it is characterized in that, before described watch-dog or ground monitoring system sent the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to described encoder, described method also comprises: described watch-dog or ground monitoring system obtained to show the triggering of the video image with first resolution;

Described watch-dog or ground monitoring system send the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to described encoder in the following manner: described watch-dog or ground monitoring system have the triggering of the video image of first resolution according to the demonstration that obtains, and send the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to described encoder.

19. a watch-dog is characterized in that, described watch-dog setting is ON TRAINS or in the ground monitoring system, described watch-dog is applicable to the train-installed video monitoring system that comprises video capture device and encoder, and described watch-dog comprises:

Data obtain the unit, are used to obtain the data to obtaining behind the video signal coding that encoder provides;

Date Conversion Unit is used for the data that described data acquisition unit obtains are converted to video image;

The video image display unit is used to show the video image after described Date Conversion Unit is changed;

Wherein, at video capture device, behind encoder and the watch-dog power-up initializing, described data obtain the data that picture format that the unit specifically is used to obtain the use second resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that described Date Conversion Unit specifically is used for described data are obtained the use second resolution correspondence that the unit obtains obtains after to video signal coding are converted to the video image with second resolution, and described video image display unit specifically is used to show the video image with second resolution after the described Date Conversion Unit conversion;

Wherein, since a moment, described data obtain the data that picture format that the unit specifically is used to obtain the use first resolution correspondence that encoder provides obtains after to video signal coding, the data that the picture format that described Date Conversion Unit specifically is used for described data are obtained the use first resolution correspondence that the unit obtains obtains after to video signal coding are converted to the video image with first resolution, described video image display unit specifically is used to show the video image with first resolution after described Date Conversion Unit is changed, wherein, described first resolution is higher than described second resolution.

20. watch-dog as claimed in claim 19, it is characterized in that the data that the picture format that described data obtain the use first resolution correspondence that encoder that the unit obtains provides obtains after to video signal coding comprise: data that after picture format that encoder before the described moment uses the first resolution correspondence is to video signal coding, obtain and the data that after picture format that encoder after the described moment uses the first resolution correspondence is to video signal coding, obtain.

21. watch-dog as claimed in claim 20 is characterized in that, also comprises:

File generating unit, be used for after described data obtain data that picture format that the unit obtains the use first resolution correspondence that encoder provides obtains after to video signal coding, generate the video file of the data that are included in data that picture format that encoder before the described moment uses the first resolution correspondence obtains after to video signal coding and after picture format that encoder after the described moment uses the first resolution correspondence is to video signal coding, obtain;

File storage unit is used to store the video file that described file generating unit generates.

22. watch-dog as claimed in claim 19, it is characterized in that, also comprise: message sending unit, be used for before the described moment, send the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to described encoder;

The data that the picture format of the data that the picture format that described data obtain the use first resolution correspondence that encoder that the unit obtains provides obtains after to the video signal coding use first resolution correspondence that to be described encoders provide according to described request message obtains after to video signal coding.

23. watch-dog as claimed in claim 22, it is characterized in that, also comprise: trigger obtaining the unit, be used for before described message sending unit is sent the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to described encoder, obtaining to show the triggering of video image with first resolution;

Described message sending unit specifically is used for obtaining the triggering that demonstration that the unit obtains has the video image of first resolution according to described triggering, sends the request message that the data that the picture format that uses the first resolution correspondence obtains after to video signal coding are provided to described encoder.

24. a train-installed video monitoring system is characterized in that, comprising:

Video capture device, encoder and watch-dog;

Video capture device is used to gather video image, outputting video signal;

Encoder, be used for using respectively the video signal coding of the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to described video capture device output, data after obtaining encoding, wherein, described first resolution is higher than described second resolution;

Watch-dog is used to obtain the data behind the coding that described encoder provides;

Obtain to provide before the triggering of the data that obtain behind the picture format coding that uses the first resolution correspondence at described encoder, described encoder specifically is used for providing the data that obtain behind the picture format coding that uses the second resolution correspondence to described watch-dog, and the data that obtain behind the picture format coding of the first resolution correspondence are used in storage;

After the triggering of the data that obtain after described encoder obtains to provide the picture format coding that uses the first resolution correspondence, data from the video signal coding that obtains to obtain after the described triggering to described watch-dog that provide the picture format that uses the first resolution correspondence to obtain after to specifically are provided described encoder.

25. an implementing train video monitoring is characterized in that, is applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described method comprises:

Encoder obtains the vision signal that video capture device provides;

Described encoder uses the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to encoding video signal respectively, and wherein, described first resolution is higher than described second resolution;

Described encoder provides the data that obtain after data that obtain behind the picture format coding that uses the first resolution correspondence and the picture format coding that uses the second resolution correspondence to described watch-dog or ground monitoring system.

26. an encoder is characterized in that, is applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described encoder comprises:

Vision signal obtains the unit, is used to obtain the vision signal that video capture device provides;

Coding unit is used for using respectively the picture format of the first resolution correspondence and the picture format of the second resolution correspondence that described vision signal is obtained the encoding video signal that the unit obtains, and wherein, described first resolution is higher than described second resolution;

Data provide the unit, are used for the data that obtain behind data that obtain behind the picture format coding that watch-dog or ground monitoring system provide described coding unit to use the first resolution correspondence and the picture format coding that uses the second resolution correspondence.

27. an implementing train video monitoring is characterized in that, is applicable to the train-installed video monitoring system that comprises video capture device, encoder and watch-dog, described method comprises:

The data that data that the picture format that watch-dog or ground monitoring system obtain the use first resolution correspondence that encoder provides obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding, described first resolution is higher than described second resolution;

The data that data that the picture format that the first resolution correspondence is used in the storage of described watch-dog or ground monitoring system obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding.

28. method as claimed in claim 27 is characterized in that, the data that described watch-dog or ground monitoring system obtain after storing in the following manner and using first resolution to video signal coding:

Described watch-dog or ground monitoring system adopt the mode of formation to store the data that obtain behind the picture format coding of the use first resolution correspondence.

29. as claim 27 or 28 described methods, it is characterized in that described watch-dog or ground monitoring system are stored the data that the picture format that uses the first resolution correspondence obtains after to video signal coding in the following manner: described watch-dog or ground monitoring system storage meet the data that obtain behind the picture format coding of the use first resolution correspondence of Preset Time condition.

30. a watch-dog is characterized in that, described watch-dog setting is ON TRAINS or in the ground monitoring system, described watch-dog is applicable to the train-installed video monitoring system that comprises video capture device and encoder, and described watch-dog comprises:

Data obtain the unit, the data that data that the picture format that is used to obtain the use first resolution correspondence that encoder provides obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding, wherein, described first resolution is higher than described second resolution;

Data storage cell is used to store described data and obtains the data that the data that picture format that encoder that the unit obtains uses the first resolution correspondence obtains after to video signal coding and the picture format that uses the second resolution correspondence obtain after to video signal coding.

31. watch-dog as claimed in claim 30 is characterized in that, described data storage cell specifically is used to adopt the mode of formation to store the data that obtain behind the picture format coding that uses the first resolution correspondence.

32., it is characterized in that described data storage cell specifically is used to store the data that obtain behind the picture format coding of the use first resolution correspondence that meets the Preset Time condition as claim 30 or 31 described watch-dogs.

33. a train-installed video monitoring system is characterized in that, comprising:

Video capture device, encoder and watch-dog;

Video capture device is used to gather video image, outputting video signal;

Encoder, be used for using respectively the video signal coding of the picture format of the picture format of the first resolution correspondence and the second resolution correspondence to described video capture device output, data after obtaining encoding, wherein, described first resolution is higher than described second resolution;

Watch-dog, the data after being used to obtain and store the data behind the picture format coding of the use first resolution correspondence that described encoder provides and using the picture format coding of the second resolution correspondence.

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