KR101171283B1 - Large data, high-speed event recording method of dvr - Google Patents

Abstract

The present invention relates to an event storage method of a DVR that can be stored in a large capacity and high speed, the temporary recording file is transferred from the camera installed in a plurality of channels to the hard disk as long as the data is set at a predetermined time interval In the temporary storage step, the temporary recording section maintenance step, the event processing step, and the temporary storage step and the event processing step, which are temporarily stored in the form, the data generated from the time of occurrence of an event is stored as a normal recording file. If there is not enough space on the hard disk to save the normal recording file, delete the oldest normal recording file to free up space to save a new normal recording file, and after the set time, the event ends and the normal recording file is saved. When you save a temporary recording file again, the space for the temporary recording file is saved. If this is not enough, the oldest normal recording file is deleted to free up space, and then a new temporary recording file can be stored for a set time, and the temporary recording file is stored in order for the set time and then exceeds the time. Acquiring the event space to delete the oldest temporary recording file while keeping the existing normal recording file as it is, so that the new temporary recording file is stored regularly, and temporarily storing step according to whether or not an event occurs in the DVR device. In this case, the temporary recording section maintenance step, the event processing step, and the event space securing step are continuously performed.
According to the present invention, the data generated by the DVR device is stored as a temporary recording file on the hard disk as soon as the first time is set without passing through the memory device, and when the set time is exceeded, the oldest temporary recording file is deleted to always be fixed. The latest data can be saved in size.When an event occurs, the temporary recording file stored in the hard disk is converted to a normal recording file.The data generated from the time of the event is saved as a normal recording file. After that, it saves as normal recording file for the set time for a certain time, eliminating the time difference for saving the data created at the time of event occurrence and before the time of event occurrence, thereby reducing data loss and distortion according to the time difference. have.

Description

Large data, high-speed event recording method of DVR

The present invention relates to an event storage method of a DVD that can be stored in a large capacity and high speed. More specifically, when storing data photographed by the DB device, the hard disk does not go through a separate temporary storage device such as a memory. After saving as a temporary recording file in the event, if an event occurs, convert the temporary recording file stored in the hard disk into a recording confirmation file so that the temporary storage and definite storage are performed immediately on the hard disk, thereby saving the data generated before the event. By reducing the difference between the time and the storage time of the data transmitted in real time when an event occurs, it prevents data loss and saves the data created in the DVR device as a temporary recording file or a normal recording file on a large hard disk. Stores large amount of data before event occurrence That can handle the foundation relates to the mass, the event storage of DVR storage is possible at high speed.

In general, as shown in FIG. 1, when storing an image generated by a DV device, the image data generated by the DV device is primarily stored in a memory having a relatively small capacity, such as Korean Patent Laid-Open No. 10-2002-0048015. After storing, if the retention period of the data before the event is exceeded, the oldest data is deleted in order, and the data is temporarily stored in the memory while maintaining the retention period of the data before the event as the latest data.

When the event occurs, the temporary storage data stored in the memory through the above method is stored in a separate storage medium such as a hard disk formed in the DVD device from the time when the event occurs.

Here, the data stored in the memory before the event occurs is first transmitted to a separate storage medium, and then the data generated from the time when the event occurs is transmitted to a separate storage medium to be stored.

Thereafter, after the event set in the DVD device was terminated, the data generated up to a predetermined time was stored in a separate storage medium, and then returned to the original state again and temporarily stored in the memory again.

However, as described above, when the data generated by the DV device is primarily stored in the memory and an event occurs, the data generated from the event is generated after being transmitted from the data stored in the memory to a separate storage medium before the event occurs. If the data created before the event occurred is stored in the storage media for a long time because the data must be stored in the storage medium continuously, the data generated from the event is not saved immediately, and the data generated before the event occurred completely. Since the data was stored after being stored, an error occurred as much as the time difference, and thus, data at the time of event generation could not be stored properly, resulting in data loss or distortion.

In addition, due to the limitation of the capacity of the memory where data is temporarily stored, the data before the event occurred for a longer time could not be maintained. If the memory capacity is increased, the data for a longer time can be stored in the memory. When an event occurs, first, the time for transferring and storing the data stored in the memory to a separate storage medium increases, and thus a larger error occurs at the time of processing the data generated when the event occurs. As the distortion occurs more, there is a problem that an increase in system configuration cost and system overload occur.

The present invention provides a temporary storage step of continuously transmitting data from a camera installed in a plurality of channels in a TV device to a hard disk for a predetermined time interval and temporarily storing the temporary recording file in the form of a temporary recording file. When the temporary recording file saved to the hard disk is transferred or stored for longer than the set time, the temporary recording file transmitted and stored for the longest time is deleted to maintain the temporary recording period for the set time, and the new data is stored in the temporary recording file. The temporary recording section is maintained so that the latest data for a certain time is always stored as a temporary recording file. In the temporary storage step, when the temporary recording file is transmitted and stored to the hard disk, an event occurs. , Convert the temporary recording file saved on the hard disk to the normal recording file, Saves the data created from the time of recording as a normal recording file, but saves the data created from the time of event to the normal recording file on the hard disk from the time of occurrence of the event to the recording time set after the occurrence of the event. In the event processing step of storing as a file, and in the temporary storage step and the event processing step, there is not enough space on the hard disk to store the normal recording file while storing the data generated from the event occurrence as the normal recording file. In this case, the oldest normal recording file is deleted to free up space to save a new normal recording file, and the temporary recording file is saved when the temporary recording file is again saved after the set time for the event to be terminated and saved as the normal recording file. If there is not enough space to save, delete the oldest normal recording file to save space. After securing, new temporary recording file can be saved for a set time, and if the temporary recording file is stored in order for the set time, and the time is exceeded, the existing recording file is saved as long as Deleting the temporary recording file, so as to ensure that the new temporary recording file is stored regularly, the temporary storage step, the temporary recording section maintenance step, the event processing step, the event space according to whether the event occurs in the DVR device It is made to continuously carry out the securing step.

As described above, the present invention stores the data generated by the DVR device as a temporary recording file on the hard disk as much as the initially set time, without passing through the memory device, and the oldest temporary recording file when the set time is exceeded. The latest data can be saved at a certain size by deleting from the file.When an event occurs, the temporary recording file stored on the hard disk is converted directly to a normal recording file, and the data generated from the event occurrence is saved as a normal recording file. However, it saves as normal recording file for the set time for a certain time after the occurrence of the event, eliminating the time difference for storing the data generated at the event occurrence and before the occurrence of the event, and eliminating data loss and distortion according to the time difference. There is an advantage to reduce.

In addition, since the time difference between storing the image before and after the event and the data generated after and after the event is eliminated, the data is immediately stored on the hard disk without any additional work, thereby simultaneously processing a large amount of data. It can eliminate the overload of the system, and there is an advantage in that the system can be simplified.

In addition, since the data created in the DVR device is stored directly in a large capacity hard disk without going through a separate storage device, the data before the large event occurrence and the time after the event occurrence and the event occurrence time without a large limit in capacity The advantage is that data can be stored easily.

 In addition, if the space is exceeded enough to store the temporary recording file after the normal recording file is stored, the oldest normal recording file is deleted to secure the time according to the space where the temporary recording file can be temporarily stored. Thus, there is always an advantage that can save a new temporary recording file.

Figure 1 is a simplified diagram showing a conventional event storage method of the DVD.
Figure 2 is a simplified diagram showing the temporary storage step and the temporary recording section maintenance step of the present invention.
Figure 3 is a simplified diagram showing the event processing step of the present invention.
4 and 5 is a simplified diagram showing an event space securing step of the present invention.
6 is a simplified diagram showing a temporary recording file and a normal recording file of the present invention.

Looking at the configuration of the present invention for achieving the above object is as follows.

According to the present invention, a large-capacity, high-speed, event-saving method for storing a DV is hard as long as the data is continuously set at a predetermined time interval from a camera installed in a plurality of channels in the DV device. In the temporary storage step (S10) and is temporarily stored in the form of a temporary recording file is transferred to the disk, and in the temporary storage step (S10), when the temporary recording file to be stored in the hard disk for more than the set time, Deletes the temporary recording file that has been sent and stored the longest, maintains the temporary recording period for the set time, and ensures that new data is saved as a temporary recording file, so that the latest data for a certain time is always stored as a temporary recording file. In the temporary recording section holding step (S20) and the temporary storage step (S10), the temporary recording file is transferred to the hard disk, When an event occurs, the temporary recording file stored on the hard disk is converted to a normal recording file, and the data generated from the event occurrence is saved as a normal recording file, but the recording time set after the event occurrence from the event occurrence After storing the normal recording file to the hard disk until, the event processing step (S30) and the temporary storage step (S10) and the event processing step (S30) for storing the data generated since the set time is exceeded as a temporary recording file If there is not enough space on the hard disk to store the normal recording file after saving the data created from the event occurrence as the normal recording file, the newest normal recording is deleted by deleting the oldest normal recording file. Save the file, and after the set time when the event ends and saves as a normal recording file, When saving the temporary recording file, if there is not enough space for the temporary recording file, the oldest normal recording file is deleted to secure the space, and then the new temporary recording file can be saved for a set time. If the time is exceeded and the normal recording file is saved, the oldest temporary recording file is deleted while maintaining the normal recording file, and the new temporary recording file is stored regularly. (S40) and the DB device is configured to continuously perform the temporary storage step, the temporary recording section maintenance step, the event processing step, and the event space securing step according to whether or not an event occurs.

Here, the temporary file type data transmitted from the camera in the temporary storage step (S10) is a file version that distinguishes the structure and form of the file, the file creation time, the duration of the data stored in the file, the number of channels, the start of the index information File header unit for storing the information generated while the data is input, such as position, channel information for distinguishing each channel in a plurality of channels, playback information of the data input from each camera, linkage relationship between the data of each channel, A stream information unit for storing channel information input from a plurality of channels, such as index start position information of each channel, a frame unit for sequentially storing images captured by a camera, and index information for data stored in the frame unit. It is preferable to form the index portion.

In the event processing step (S30), when the event occurs, the temporary recording file stored before the event occurrence time while maintaining the temporary file type consisting of a file header unit, a stream information unit, a frame unit, and an index unit stored before the event occurrence point, When an event occurs, it is preferable to move only the name and the storage location of the file to the location where the normal recording file is stored.

In addition, in the event processing step (S30), if a normal recording file is set for a predetermined time from the event occurrence, when a new event occurs while being stored on the hard disk, it extends by the set time from the newly generated event occurrence It is recommended that data generated by the DVR device be additionally stored as a normal recording file.

Hereinafter will be described the most preferred embodiment of the present invention.

First, as shown in FIG. 2, an image is taken by a camera installed in a plurality of channels in a TV device, and the image is converted into data.

Here, the camera sets a channel by arbitrarily designating a point to be photographed through a user's setting, and generally detects whether an event is generated through various data analysis such as movement detection, voice detection, sensor detection, etc. Obviously, the detailed description is omitted.

In addition, the user may adjust the time interval stored before the event occurs. For example, a general video without an event may always be stored for 10 minutes, and may be set to various time zones. When the event occurs, it can be set to store the image taken for 10 minutes before and after the event occurred.

This can be set by adjusting the time as much as the user's arbitrary.

In addition, it is obvious that event generation, compression, conversion, calculation, control, etc. of the image data transmitted from the camera of the DV device are installed, and a control device for controlling the DV device is installed. Is omitted.

The hard disk installed in the DVD device may be installed in various capacities according to a user's purpose.

On the other hand, when an image is transmitted through the camera of the DVD device, the video is converted into data by a control device installed in the DVD device and the like is transferred to a hard disk installed in the DVD device, and the data is indexed into a temporary recording file. It is set and saved on the hard disk.

In detail, when data is transmitted from the camera of the DV device to the hard disk according to a user's time setting, the data is checked to determine whether an event has occurred, and when the event does not occur, the data is recorded as a temporary recording file. Save it to your hard disk.

Here, the temporary recording file is a file version that distinguishes the structure and form of the file of the temporary recording file input from the camera to the hard disk, the creation time of the file, the period of data stored in the file, the number of channels, the starting position of the index information As described above, the data header is formed as a file header that stores basic information of data generated as data is input.

In addition, the channel information to distinguish the channel of the data input to the hard disk from the plurality of channels installed in a plurality of points of the vehicle, the playback information of the data input from the camera, the linkage relationship between the data of each channel, the start of the index of each channel It consists of a stream information unit for storing channel information input from a plurality of channels, such as position information, a frame unit for inputting image data photographed in each of the plurality of channels, and an index unit for storing index information of the data stored in the frame unit You lose.

On the other hand, the user can set the storage period of the data recorded before the event occurs in a variety of ways, if the user sets the time to save the temporary recording file to 10 minutes, the data recorded for one minute and transmitted By converting to a temporary recording file format, the data is stored in 10-minute increments and stored as 10 temporary recording files so that they are always transferred to and stored on the hard disk, and when new data is continuously input, as described below. It deletes the oldest temporary recording file so that the temporary recording file keeps 10 minutes of the latest data.

Here, the time setting interval, quantity, etc. of the temporary recording file according to the time can be changed as much as the user's setting.

Then, a plurality of temporary recording files are stored in the hard disk according to the user's time setting.

As described above, all information generated by the camera and generated as data, such as creation time, shooting period, address, image information, channel information, etc., taken by the camera and input to the hard disk is stored in a temporary recording file format. (S10)

Then, as described above, data is continuously transmitted and stored from the camera to the hard disk.

Then, the control device searches the temporary recording file stored in the hard disk, and if the time set by the user is not exceeded, the image is continuously transmitted from the camera so that the temporary recording file can be stored for the time set by the user. And save it as a temporary recording file.

Then, if the time set by the user is exceeded, the temporary recording file stored in the hard disk in the oldest time will be erased in chronological order, and the amount of temporary recording file according to the time setting will be deleted. While keeping it constant all the time, the new temporary recording file is updated to be stored. (S20)

On the other hand, as shown in FIG. 3, when the control device or the like grasps the data transmitted from the camera to the hard disk and no event occurs, the user continuously uses the data transmitted from the camera as a temporary recording file as described above. It stores the time set by the user and keeps the time, and the update including the deletion of the oldest temporary recording file and the storage of the new temporary recording file is continued, and a signal that an event has occurred is transmitted to the data transmitted from the camera.

Then, the file currently stored as a temporary recording file on the hard disk is converted into a normal recording file, and the data generated from the camera from the time of the event is stored as a normal recording file without passing through the temporary recording file as a normal recording file. Save it.

Here, when the data saved as the temporary recording file before the event occurs is converted into the normal recording file format, the temporary recording file stored in the hard disk is stored as a separate normal recording location where the normal recording file set by the user is stored. Move it without conversion so that the temporary recording file is converted to a normal recording file.

In addition, when the temporary recording file is converted into a normal recording file, while moving the temporary recording file to a location where the normal recording file is stored, the extension or name of the temporary recording file may be converted and stored as a normal recording file in the temporary recording file. have.

For example, a temporary recording file is converted into an extension such as mpeg or mp4 that can be identified as a file such as an image from an extension that is temporarily generated on a computer, not an image file or a picture file.

This is because data input to the hard disk before the event occurs is continuously deleted and stored. Therefore, if the temporary recording file is set to an extension that can be identified as a file such as an image as described above, the process of the system, etc. In order to minimize the processing of the system while optimizing the system, the data before the event occurrence is stored in a temporary file format, and when the event occurs, the data is stored as a convenient image extension for checking. .

Then, the data is continuously saved as a normal recording file for a certain time after the event set by the user occurs.

For example, if an event occurs at a point in time, if the user sets the time from the time of the event to 10 minutes later, the data input from the camera from the time of the event to 10 minutes after the event occurs on the hard disk as a normal recording file. To save.

In this case, when a single event occurs and a new event occurs in a state in which the user-defined time of 10 minutes has not elapsed, an additional 10 minutes is added again from the time when the new event occurs, and an event is generated. The data is stored as a normal recording file instead of a temporary recording file. (S30)

Meanwhile, as shown in FIGS. 4 to 5, the temporary recording file before the event occurrence time is converted to the normal recording file as the event occurs, and the normal recording file is stored on the hard disk from the time when the event occurs to the time set by the user. If the storage space becomes full to prevent new normal recording file from being saved, the oldest normal recording file is deleted from the data saved from the temporary recording file to the normal recording file or the data stored as the normal recording file from the beginning due to an event occurrence. After freeing up space, save the latest normal recording file.

In this case, when the normal recording file is deleted, data that has been converted from the temporary recording file to the normal recording file and the data stored as the normal recording file from the beginning are present on the hard disk. Delete the data converted from the recording file to the normal recording file to make space.

This means that the data saved as normal recording file from the beginning is transmitted and stored from the event occurrence by the event occurrence, and the latest data related to the event occurrence is stored, but the data converted from the temporary recording file to the normal recording file generates the event. Since it was created with the data input before the time, the oldest normal recording file is deleted from the time of occurrence of the event to prevent the loss of data related to the event.

In addition, the event is terminated and the data transmitted from the camera after a predetermined time as set by the user is stored in the hard disk as a temporary recording file again.

On the other hand, when the event is terminated and a new temporary recording file is transferred to and stored on the hard disk, the normal recording file and the new temporary recording file according to the occurrence of the event exist on the hard disk at the same time.

Then, when a new temporary recording file is continuously transferred to and stored on the hard disk, as much time as the time for the user to store the minimum temporary recording file (for example, if the user has 10 minutes in the first minute) If the setting to save the video information is insufficient, delete the oldest normal recording file among the normal recording files stored on the hard disk, and secure enough space for the temporary recording file set by the user. Again, make sure that new data is kept on your hard disk for a certain amount of time.

Also, among the normal recording files and temporary recording files existing on the hard disk, temporary recording files exist for the amount of time set by the user, and then new temporary recording files are transferred and stored. If this time is exceeded, the oldest temporary recording file among normal recording files and temporary recording files stored on the hard disk is deleted to secure a space for storing a new temporary recording file, and then the new temporary recording file is always a fixed time. Keep it as long as possible.

Here, the normal recording file is deleted and the user saves the temporary recording file only when there is not enough space (10 minutes of information set by the user) for storing the temporary recording file set by the user on the hard disk. In order to secure only the space for the time set in order to store the temporary recording file for the time set by the user in the space (S40).

In this way, to save the data input and recorded by the camera of the TV device, the camera does not go through a temporary storage medium such as memory, and saves it directly from the hard disk, thereby reducing the process of transferring from the camera to the hard disk before the event occurs. By reducing the time for transferring and storing the data of the event, the data at the time of the event and the data after the event to the hard disk, the data can be processed in order without processing a large amount of data at the same time. It is possible to build the system briefly.

As shown in FIG. 6, the temporary recording file and the normal recording file have the same form, and when an event occurs in the temporary recording file stored before the event, the location or extension of the folder where the temporary recording file is stored Since only the name can be converted and saved as a normal recording file, the time for switching from the temporary recording file to the normal recording file can be reduced.

On the other hand, the data before the event occurs, the data when the event occurred, and the data after the event occurred are stored on the same hard disk at the same time. Therefore, the data generated before the event and the data input when the event occurs are generated. By eliminating the time difference for storing, it is possible to completely and seamlessly store and store the data stored in the hard disk by preventing the loss and distortion of other data in the time difference.

In addition, the data input from the camera can be directly stored in a large capacity hard disk without going through a memory, thereby allowing a large amount of data to be stored at once without overloading the system and delaying time.

Claims (4)

As data is inputted from the camera installed with multiple channels in the DVR device, the file version continuously distinguishes the structure and form of the file, the creation time of the file, the duration of the data stored in the file, the number of channels, and the starting position of the index information. File header unit to store the generated information, channel information for distinguishing each channel in a plurality of channels, playback information of the data input from each camera, linkage relationship between the data of each channel, index starting position information of each channel The data formed by the stream information unit for storing the channel information input from the plurality of channels, the frame unit for storing the image taken by the camera in order, and the index unit for storing the index information of the data stored in the frame unit is constant It is transferred to the hard disk for the time set by the time interval and is temporarily saved in the form of temporary recording file. Procedure Step Chapter (S10);
In the temporary storage step (S10), if the temporary recording file stored on the hard disk is transmitted and stored for more than the set time, the temporary recording period for the set time is deleted by deleting the temporary recording file transmitted and stored the longest. A temporary recording section maintaining step (S20) of maintaining and allowing new data to be stored as a temporary recording file so that the latest data for a predetermined time is always stored as a temporary recording file;
In the temporary storage step (S10), when an event occurs while the temporary recording file is transmitted and stored to the hard disk, data generated from the time of occurrence of the event, while converting the temporary recording file stored on the hard disk to a normal recording file so far Process as a normal recording file, but saves the data generated from the time when the event occurred to the recording time after the event as a normal recording file on the hard disk, and then saves the data generated from the time set as a temporary recording file (S30);
In the temporary storage step (S10) and the event processing step (S30), when the event occurs and saves the data generated from the event occurrence as a normal recording file, when the hard disk space for storing the normal recording file is most When the old normal recording file is deleted to free up space to save a new normal recording file, when the event ends and the set time for saving as a normal recording file elapses, and the temporary recording file is saved again, the space for storing the temporary recording file If this is not enough, the oldest normal recording file is deleted to free up space, and then a new temporary recording file can be stored for a set time, and the temporary recording file is stored in order for the set time and then exceeds the time. Delete the oldest saved temporary recording file while retaining the normal recording file. , The event space securing step such that the new temporary recording files are stored constant (S40);
Event storage of the large-capacity, high-speed storage DB characterized by continuously performing the temporary storage step, the temporary recording section maintenance step, the event processing step, and the event space securing step according to the event occurrence in the DVD device Way.
delete According to claim 1, wherein in the event processing step (S30), when the event occurs, the temporary recording file stored before the event occurrence time is a temporary file type consisting of a file header unit, a stream information unit, a frame unit, an index unit stored before the event occurrence time If the event occurs, the event storage method of the large-capacity, high-speed storage is characterized in that only the name of the file, the storage location is moved to the location where the normal recording file is stored.
The method according to claim 1, wherein in the event processing step (S30), when a normal recording file is set for a predetermined time from an event occurrence and a new event occurs while being stored in the hard disk, A large-capacity, high-speed event storing method of a DVR, which is characterized by extending the set time so that data generated by the DVR device is additionally stored as a normal recording file.

Images