JP4321384B2 - Video recording apparatus and video file management method thereof - Google Patents

Description

  The present invention relates to a video recording apparatus for recording video information such as TV broadcasts, and more particularly to a video recording control method for recording on a random accessible recording medium such as a hard disk (hereinafter referred to as HDD), a recordable DVD medium, or a recordable CD medium. .

  In a video recording apparatus that records moving image content distributed from a TV or the like, a recording medium for recording video can be stored in a randomly accessible recording medium such as a hard disk (hereinafter referred to as HDD), a recording type DVD medium, or a recording type CD medium. There is something. Such a video recording apparatus is generally called an HDD recorder or a hybrid digital recorder having both an HDD and a DVD. Among such video recording apparatuses, there is a video recording apparatus that includes a clock in the apparatus and can perform timer reservation recording in which recording is performed from a certain recording start time to a certain recording end time according to a user's time designation.

  This timer recording function is a convenient function that allows a program to be viewed when absent to be recorded and that the program can be viewed at a later date. However, the broadcast time of broadcast programs may change suddenly. For example, in a baseball broadcast or the like, the broadcast is often extended until the end of the game, and the airing time of the program after the baseball program is often changed. In this way, if the program is scheduled to be recorded after the baseball broadcast in a situation where the broadcast time has been lowered, the recording starts before the broadcast time of the program to be recorded, and the program is recorded while the program to be recorded is being broadcast. Because it will end, the program recording will run out.

  In order to cope with such a problem, for example, a method described in Patent Document 1 has been devised. In Patent Document 1, recording is ended at a time later than the recording end time reserved at the time of the reserved recording process, and further, a recording medium is used for recording from the reserved recording end time to the actual recording end. A recording control method for recording with a high compression ratio of video to be recorded is disclosed. According to this recording control method, the extended recording portion after the reserved recording end time is recorded at a high compression rate, so that the capacity of the recording medium can be used effectively.

JP 2003-174613 A

  In the prior art disclosed in Patent Document 1 above, the recording extension portion is recorded at a high compression rate, and therefore the portion recorded based on the recording reservation information 15 (hereinafter referred to as main data in this specification) Since the compression rate of video compression such as MPEG is different, there is a problem that the video image quality is different. That is, the video quality of the recording extension portion (hereinafter referred to as preliminary recording data in this specification) is lower than the video quality of the main data. In particular, there is a problem when the program video is recorded in the pre-recorded data due to the broadcast delay, and the program video is saved in a removable medium such as a DVD-RAM.

  Further, in the prior art disclosed in Patent Document 1, preliminary recording data is recompressed at the time of recording reservation in order to secure the storage capacity of the recording medium. There is a problem that is bad.

  Further, there is a problem that the erasure time of the preliminary recording data and the main data is not particularly taken into consideration, and the responsiveness of the operation accompanying the file erasure is poor in the video file management.

  An object of the present invention is to provide a file management method for a video recording apparatus that solves the above-described problems and facilitates file management.

  In order to solve the above problems, a video recording apparatus for recording video information such as a broadcast program of the present invention on a recording device includes a timer for setting a recording start time and a recording end time of video information instructed to be recorded, and the timer A video recording control unit for recording video information on a recording device based on the first video file for recording video information from the recording start time to the recording end time, and video information for a predetermined time after the recording end time A recording device in which the first video file and the second video file are managed as different files on the file management system of the recording device; did.

  Further, the recording device further includes a third video file for recording video information for a predetermined time before the recording start time, and the first video file, the second video file, and the third video Files are managed as different files on the file management system of the recording device.

  Further, for each identification name of the video information to be recorded, file identification names of the first video file, the second video file, and the third video file, a deletion instruction flag of the video file, and viewing of the video information A video recording management information recording unit for recording a completion flag and a flag indicating storage priority of the video information, and viewing management of video information based on the video management information recorded in the recording management information recording unit, video Added file management.

According to the present invention, it is possible to reduce the capacity of the recording medium due to video recording extension to a certain amount, and to easily perform file operations such as erasing, thereby improving the usage efficiency of the recording medium of the video recording apparatus. Since the user can easily delete the file, the operability of the video recording apparatus is improved.

Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a block diagram showing a schematic configuration of a video recording apparatus using the present invention. The video recording device 13 inputs radio waves of terrestrial broadcasting or satellite broadcasting from the antenna 1 by operating the remote controller 11, and displays the video of the broadcast program on the display 3. Further, the video recording device 13 includes an HDD or a writable DVD drive 6 inside the device, and records the video of the broadcast program. More specifically, a broadcast wave input from the antenna 1 is received by the receiving unit 2 and displayed on the display 3 by the video signal processing unit 3. When a broadcast program is recorded, the program is compressed by the compression / decompression processing unit 4 using a video compression technique such as MPEG and stored in a recording medium 6 such as a recording removable medium such as an HDD or a DVD-RAM.

  The broadcast wave input from the antenna 1 includes a program table of broadcast programs (hereinafter referred to as EPG in this specification), and the EPG data is separated by the receiver 2 and processed by the EPG processor 8. . By capturing the EPG, the video recording device can grasp the title, broadcast time, and genre of the program that can be received from the TV input. The EPG processing unit 8 displays the received EPG data on the display 3 and makes a recording reservation for the broadcast program according to the operation of the viewer's remote control 11. The recording reservation information 15 of the broadcast program designated by the viewer is stored in the recording management information storage unit 12. The recording management information recording unit 12 stores recording reservation information 15 and video management information 16 which is management data of recorded video stored in the recording medium 6, as will be described in detail later. The EPG data is not only extracted from the broadcast wave, but may be acquired by a server that registers the EPG data via the Internet.

  The timer processing unit 9 has a clock function, refers to the recording reservation information 15 of the recording management information recording unit 12, receives the broadcast of the selected channel at the set date and time, and is reserved for recording. To record. The CPU 7 includes the above-described functions and controls the operation of the video recording device 13.

  FIG. 2 is a diagram showing the configuration of recorded video data stored in the recording medium 6. As shown in FIG. As shown in FIG. 2 (a), the video data is the main data in which the broadcast content from the recording start time specified by the recording reservation to the recording end time is compressed with MPEG or the like, and a predetermined time from the recording end time, It consists of pre-recorded data that extends the recording reservation and compresses the broadcast content. Here, the main data and the preliminary recording data are managed as separate files in the file system of the recording medium 6. Further, as shown in FIG. 2 (b), in addition to the above, it is configured to include pre-recorded data in which the broadcast contents are compressed and recorded for a predetermined time prior to the recording start time. Also good. In this way, the recorded video data is composed of main data and pre-recorded data, or the pre-record data, main data and pre-recorded data are used to change the broadcast schedule reserved for recording due to extension, etc. Can be recorded. In addition, by making each file a separate file, file management in the system is facilitated, and editing such as deletion is facilitated.

  FIG. 2C is a diagram for explaining an example of the storage positions of the main data and the preliminary recording data. In FIG. 2C, the total capacity is 120 GB, the first 10 GB is the system area 300, the next 100 GB is the area 301 for storing the main data 303, 304, 305, and the last 10 GB is the present invention. The preliminary recording data 306, 307, and 308 are stored in an area 302 for storing. By setting the area 300 for storing the preliminary recording data to a fixed amount, there is no burden on the capacity area for storing the main data, and the main data is stored even when the remaining recording capacity is displayed to the viewer. It is only necessary to notify the remaining capacity of 301, and the remaining capacity can be easily notified. Similarly, the area for storing the pre-preliminary recording data can be set to another partition.

  In the above description, the main data, the preliminary recording data, and the pre-preliminary recording data are stored in separate partitions, but they may be stored in one partition. In this case, the same effect as described above can be achieved by performing file management by setting the maximum value of the number of stored preliminary recording data and pre-preliminary recording data to a predetermined number.

  FIG. 3 shows an example of the video management information 16 stored in the recording management information recording unit 12. In the video management information 16, a plurality of item data indicated by reference numeral 17 in FIG. 3 is recorded for each recorded video information stored in the recording medium 6. Recorded video information is input not only from broadcast programs that have been reserved for recording but also from external devices such as broadcast programs that have started recording by pressing the record button on the remote control during viewing and video connected to this video recording device. Information such as video information. The video management information 16 is also referred to when a recorded program list is displayed to the viewer as shown in FIG.

  The data items of the video management information 16 have areas for registering the main data file name, preliminary recording data file name, and pre-recording data file name in which the recorded video information data is recorded. As management information, there are a pre-recorded data storage priority flag, a main data delete flag, a pre-record data delete flag, and a pre-record data delete flag.

  In addition, as information representing the outline of the recorded video information, there are areas of reception channels, program titles, program genres, and program contents. Recorded video information reserved for recording is acquired from EPG data and recorded in these areas. . Furthermore, as the information indicating the access status, the recording start date and time and the recording end date and time of the main data are recorded. When pre-recording is performed, the pre-recording start date and time is recorded, and when pre-recording is performed, Record the recording end date and time. The viewing completion flag is information representing the viewing history of the recorded video information.

  Next, recording conditions for preliminary recording data will be described. The recording condition includes a valid / invalid setting indicating whether or not to perform preliminary recording, a maximum number of files for preliminary recording data, and an image quality setting value for preliminary recording data. In particular, it is desirable that the image quality setting of the preliminary recording data is the same as that of the main data. As a result, even if the broadcast time of the broadcast program is delayed from the reserved time, preliminary recording is performed with the image quality set in the main data, so the broadcast program reserved for recording can be extracted from the main data and the preliminary recording data. -Save and edit RAM etc. with high image quality.

  With reference to FIG. 4, an example of a user interface that performs recording conditions for preliminary recording data will be described. The set recording conditions may be recorded in the recording management information recording unit 12, or may be recorded for each video information in the recording reservation information 15 and the video management information 16. Specifically, FIG. 4A shows an example in which the image quality, recording time, and priority can be set for each program genre of a broadcast program reserved for recording. Here, the program genre is based on data obtained from EPG data. In FIG. 4B, the image quality, recording time, and priority can be set according to the recording time of this data.

  Here, the maximum number of files stored for the preliminary recording data is determined by the number of programs recorded by the viewer. If it is an ordinary viewer, the broadcast program that has been reserved and recorded is often viewed on the same day or the next day. About 10 programs even if the program is stored on weekdays and the program is stored on a holiday. It is sufficient if the preliminary recording data can be saved. Assuming that preliminary recording is performed for 30 minutes in the standard image quality mode, a region for recording preliminary recording data having a capacity of 10 GB may be secured. The normal video recording apparatus is equipped with an HDD of 100 GB or more, and there is no problem even if reserve recording data with a capacity of 10 GB is secured.

  Also, the priority setting in FIG. 4 is referred to when the preliminary recording data is deleted, since it is deleted from those not set.

  In the above example, the recording condition of the pre-recorded data has been described. However, the recording condition of the pre-recorded data may be similarly set by the viewer and recorded in the recording management information recording unit 12.

  FIG. 5 is a flowchart when recording is performed using the method of the present invention. First, the user makes a recording reservation from a certain start time to a certain end time (step 50). Scheduled recording is started when the recording start time set by the user is reached (step 51). Recording processing is performed based on the reserved recording, and the broadcast program is recorded in the main data file (step 52). When the recording end time set by the user comes, the reserved recording ends (step 53).

  Next, the video recording apparatus determines whether another recording reservation is set immediately after the current reserved recording (step 54). If there is no other recording reservation immediately after that, the system apparatus next determines whether or not the user has enabled the preliminary recording function (step 401) in the preliminary recording related settings in FIG. 55). If the preliminary recording function is enabled, recording of the extended portion of the same channel as the currently reserved recording channel is started as preliminary recording data and recorded in the preliminary recording data file (step 56).

  During the preliminary recording, it is monitored whether or not another scheduled recording start time has come (step 57), and when the next scheduled recording start time comes, the preliminary recording is stopped (step 58). If no other scheduled recording start time is reached, the preliminary recording is performed for the time set in the recording time (403) of the preliminary recording setting in FIG. 4A, and the process ends (step 59). When the preliminary recording process is completed, the main data file name, the preliminary recording data fail name, the preliminary recording end date and time, etc. are recorded in the recording management information 16 and the reserved recording process is ended (step 60). In this way, the broadcast program reserved for recording and the subsequent broadcast program are continuously recorded in the main data file and the preliminary recording data file.

Next, a procedure for viewing a prerecorded broadcast program will be described.
FIG. 6 shows an example of a display screen for allowing a viewer to select recorded video information stored in the recording medium 6 by operating a remote controller or the like. In the display screen of FIG. 6, a recorded program name 61, a channel number 62, a recording date 63, a recording start time and an end time 64 are displayed. In this screen, the recording start time and the end time 64 displayed are the time when the user set the reserved recording, that is, the time of the main data, and does not include the time of the preliminary recording data. And

  The display screen data in FIG. 6 is obtained by reading out item data of program title, reception channel, start date / time, and end date / time from the video management information 16 shown in FIG. Are displayed as appropriate.

  Next, a processing flow when a user views video information such as a recorded broadcast program will be described with reference to FIG. First, as shown in FIG. 6, a list of recorded programs is displayed to the viewer, and a program to be viewed is selected (step 70). As a result, one data group of the video management information 16 shown in FIG. 3 corresponding to the selected recorded program is identified, and the file recorded in the main data fail name item is read and MPEG-decoded. Video playback is started (step 71). The main data file is sequentially read to the end, and the video is displayed (step 72). When the reproduction of the main data is completed, it is next determined with reference to the prerecorded data file name of the video management information 16 whether or not prerecorded data exists (step 73).

  If the preliminary recording data does not exist, a viewing end process (step 76) described later is performed, and the playback of the viewing program ends. If the preliminary recording data exists, a confirmation display as to whether or not to perform the reproduction display of the preliminary recording data as shown in FIG. 8 is displayed to the viewer (step 74). Here, the extended reproduction time to be displayed is acquired from the recording end date and time and the preliminary recording end date and time of the video management information 16.

  When the viewer gives an input instruction to reproduce the pre-recorded data, the file recorded in the pre-recorded file name item of the video management information 16 is read and the pre-recorded data is reproduced (step 75). ). If the viewer gives an instruction not to replay the pre-recorded data, the pre-recording deletion flag in the video management information 16 is set, and then the viewing end process (step 76) is performed to replay the viewing program. End. In this case, since the viewer has confirmed that all the video data of the broadcast program reserved for recording has been recorded in the main data file by viewing the main data, there is no problem even if the preliminary recording deletion flag is set. There is no.

  In the viewing end process (step 76), the viewing completion flag of the video management information 16 is set. The capacity management of the pre-recorded data, which will be described in detail below, is performed by using the viewing completion flag and the pre-recording deletion flag described above.

  FIG. 9 is a flowchart for explaining the capacity management of preliminary recording data at the time of recording reservation. In this example, a case where the number of preliminary recording data exceeds the maximum number 402 of preliminary recording data set by the user on the GUI screen of FIG.

  The viewer sets the recording reservation information 15 based on the EPG data, and on the screen shown in FIG. 4 (a), the preliminary recording data corresponding to the maximum number of preliminary recording data set by the viewer has already been stored in the HDD. It is assumed that a new reservation recording is started in the stored state (step 90).

First, it is determined whether or not the preliminary recording function of the video recording apparatus of the present embodiment is enabled (step 91). If the preliminary recording function is disabled, the recording reservation process is terminated. If the pre-recording function is enabled, refer to the recording management information 16 as follows and delete any pre-saved pre-recorded data to set the pre-recorded data recording area. Secure.
In order to secure a preliminary recording data area for reserved recording to be recorded this time, any of the preliminary recording data that has already been stored must be deleted. Therefore, the video recording apparatus searches the video management information 16 for any of the genres that the user prioritizes on the GUI screen of FIG. Step 92). As a result, the preliminary recording data of the genre set in the priority setting is excluded from the deletion target, so the preliminary recording data of the genre set in the priority setting as shown in FIG. 10 is excluded from the recording management information 16. A preliminary recording data list is created (step 93).

  Next, it is determined with reference to the video management information 16 or the management table shown in FIG. 10 whether or not there is already viewed data from the remaining preliminary recording data not set to the priority setting. (Step 94). If there is no prerecorded data that has already been viewed, the oldest data among the prerecorded data is to be deleted (step 95). If pre-recorded data that has already been viewed exists, the oldest data among the pre-recorded data that has been viewed in the pre-recorded data is to be deleted (step 96).

  The preliminary recording data to be deleted in step 95 or step 96 is deleted to secure one or more preliminary recording data storage areas (step 97). Here, the preliminary recording data can be deleted by deleting the entity of the file corresponding to the preliminary recording data on the file system, or setting the preliminary recording deletion flag of the video management information 16 as described below. May be deleted in a pseudo manner. The timing for performing entity deletion in this case will be described later.

  FIG. 10 shows a more specific example of preliminary recording data deletion. FIG. 10 shows a list of preliminary recording data recorded in the video recording apparatus. A management table for such a list of preliminary recording data may be prepared, or the video management information shown in FIG. 3 may be referred to. In the list, for each preliminary recording data, the recording time and date (corresponding to the end date / time of the video management information 16 and the preliminary recording end date / time), the viewed flag (viewed flag), priority setting (save priority) Flag).

  In FIG. 10, it is assumed that there are five MPEG files in the preliminary recording data storage area, and a case where another reserved recording is newly executed here will be described, and the order of deleting the preliminary recording data already stored will be described. explain. First, it is determined what genre is a priority setting. In FIG. 4A, assuming that movies and music are prioritized, “movie 1” is first excluded from the deletion targets in the five files in FIG. Next, it is determined whether there is any prerecorded data that has been viewed. In FIG. 10, “Sport 1” has been viewed, and this is first deleted. After that, “Drama 1”, “Drama 2”, and “Drama 3” remaining as deletion targets are deleted from the oldest time. Based on the above determination, the preliminary recording data is deleted in the order of the “deletion column” in FIG.

  In the above description, the procedure for determining the deletion order of the preliminary recording data has been described. However, the file to be deleted can be specified in the same procedure for the main data and the pre-recording data. In this case as well, the file entity may be deleted, or the deletion flag may be set in the video management information 16 to delete the video file entity later.

  Next, a video data management method using a deletion flag such as a main part deletion flag will be described with reference to FIG. FIG. 11 is a diagram showing a list method of video files recorded in the video recording apparatus of the embodiment. Specifically, FIG. 11 (a) is a diagram for explaining a user display method of a recorded program list to be displayed to a user, and FIG. 11 (b) is a diagram for explaining a user's video data deletion designation, FIG. 11C is a diagram for explaining restoration designation after the user designates deletion of a video file. This will be described in detail below.

  The left table in FIG. 11 (a) shows a part of the video management information 16 shown in FIG. 3, for example, and is a data item related to the main video of the recorded video information stored in the video recording apparatus of the embodiment. Is the unit of the file. Here, the data items are the recording start date and time and the recording end date and time of the main data, the program information indicating the outline of the recorded video information, and the deletion flag of the main data. When the user gives an instruction to display a list of recorded programs, the main video file for which the deletion flag is not set (0 is set) is selected and the list is displayed as shown on the right. At this time, the recording date and time of the video file and the recorded program length are obtained and displayed based on the start time and end time, and the program name is extracted from the program information and displayed. This facilitates identification of the video file designated for deletion by the user.

  For example, if the user designates deletion of the Nth video file, a deletion flag corresponding to the designated video file is set (1 is set) as shown in FIG. When the deletion flag is set, the recorded program list is displayed excluding the Nth information reflecting the setting of the deletion flag. As a result, it is as if the Nth video file has been deleted from the user's perspective. At this time, the entity of the video file is not deleted, but the entity is deleted at the timing described later.

  Next, restoration processing of an apparently deleted video file for which a deletion flag is set will be described. In FIG. 11, the recorded program list is displayed by selecting and displaying the main video file with the deletion flag not set, but selecting the main video file with the deletion flag set, Display the same list of restored files. When the user selects the Nth program as a program to be restored, the deletion flag setting of the video management information corresponding to the program is not set (0 is set). When the user displays a list of recorded programs, as shown in FIG. 11C, the Nth program is displayed in the list of recorded programs, and it appears as if the Nth video file has been restored.

  In the above, referring to the deletion flag of the main video file, the list of recorded programs is displayed and the deletion and restoration of the recorded programs are explained. However, when deleting a recorded program, the related preliminary recording file or pre-recording file is deleted. If there is a file, the deletion processing may be performed by setting the preliminary deletion flag and the pre-recording deletion flag simultaneously with the setting of the main deletion flag. In this case, when the recorded program is restored, it goes without saying that the preliminary deletion flag and the pre-recording deletion flag are canceled simultaneously with the cancellation of the main deletion flag setting.

  Next, a method for deleting an entity of a video file that is set to be deleted by setting a deletion flag such as a main deletion flag will be described. As shown above, by displaying a list of video files based on the deletion flag of the video management information, it seems that the files have been deleted. Not deleted. For this reason, the capacity of the drive 6 such as an HDD will eventually become insufficient. In particular, when the preliminary recording file is stored in a separate section from the main file, it is necessary to delete the preliminary recording file with the deletion flag set.

  The video file deletion procedure flow is described with reference to FIG. 12, but the actual deletion of the video file is performed when the system is activated when the video recording apparatus is powered on or when the system of the video recording apparatus is terminated. If the actual deletion of the video file is performed at such timing, since the user does not perform an operation, it is possible to prevent a decrease in response due to the deletion process. Alternatively, the remaining capacity of the drive storing the video file is detected at a predetermined cycle, and when there is no set remaining capacity, the actual deletion of the video file is performed.

  First, the file system capacity of the drive or partition for recording the video file is detected, and the remaining capacity of the drive or partition is calculated. It is determined whether the remaining capacity is equal to or greater than a specified value. If the remaining capacity is equal to or greater than the specified value, the process is terminated (step 1201). Here, the prescribed value of the remaining capacity is set to, for example, a recording capacity for several hours, or a percentage capacity (for example, 10%) of a drive or partition for storing a recording file.

  If the remaining capacity is not equal to or greater than the specified value, the video management information 16 is referred to identify a preliminary recording file for which the preliminary deletion flag is set, and delete the file from the file system (step 1202). Thereafter, the video management information is updated by clearing each item data of the preliminary deletion flag, the preliminary recording file name, and the preliminary recording end date and time of the video management information 16 (step 1203). This process is performed for all the video information stored in the video management information. Thereafter, the file system capacity of the drive or partition for recording the video file is detected again, and the remaining capacity of the drive or partition is calculated. It is determined whether the remaining capacity is equal to or greater than a specified value. If the remaining capacity is equal to or greater than the specified value, the process is terminated (step 1204).

  Next, if the remaining capacity is not equal to or greater than the specified value, the video management information 16 is referred to, and the video information for which the storage priority flag is not set and the viewing flag is set is extracted, and the recording start date / time and recording end date / time are extracted. Sort from oldest to newest. The main video file, the pre-record file, and the pre-record file for the sorted video information are deleted, and each time a file related to one video information is deleted, it is determined whether the remaining capacity of the drive or the partition is equal to or more than a predetermined value. The sorted video information is deleted from the oldest recording start date / time and the recording end date / time until the remaining capacity of the drive or the partition becomes equal to or greater than the predetermined value (step 1205). Thereafter, all data items of the video management information 16 corresponding to the deleted video file are cleared and data is deleted from the video management information (step 1206). In this process, since the video file with the viewed flag set is targeted for deletion, unviewed video information is not deleted before viewing. Thereafter, the file system capacity of the drive or partition for recording the video file is detected again, and the remaining capacity of the drive or partition is calculated. It is determined whether the remaining capacity is equal to or greater than a specified value. If the remaining capacity is equal to or greater than the specified value, the process is terminated (step 1207).

  Next, when the remaining capacity is not equal to or greater than the specified value, the video management information 16 is referred to, video information for which the storage priority flag is not set is extracted, and the recording start date / time and the recording end date / time are sorted in order from the oldest. The main video file, the pre-record file, and the pre-record file for the sorted video information are deleted, and each time a file related to one video information is deleted, it is determined whether the remaining capacity of the drive or the partition is equal to or more than a predetermined value. The sorted video information is deleted in order of oldest recording start date / time and recording end date / time until the remaining capacity of the drive or section becomes equal to or greater than the specified value (step 1208). At this time, if the viewing / listening flag of the video information to be deleted is not set, the user may be asked to confirm the deletion. Thereby, unviewed video information can be prevented from being unconditionally deleted. Thereafter, all data items of the video management information 16 corresponding to the deleted video file are cleared and data is deleted from the video management information (step 1209).

  As described above, by deleting the file while identifying the video information to be deleted with reference to the preliminary recording deletion flag, the storage priority flag, the viewing completion flag, the recording start date and time, and the recording end date and time of the video management information, Unviewed video information and stored video information are not deleted.

  In addition, video information is composed of pre-record file, main file, and pre-record file, and whether or not each can be deleted is managed by pre-record delete flag, main program delete flag, and preliminary delete flag. Can be easily deleted.

1 is a system configuration diagram of a video recording apparatus of the present invention. It is a figure which shows the file structure of the video recording data of video information. It is a figure which shows the video management information which manages video information. It is a figure which shows an example of the setting screen of preliminary recording conditions. It is a flowchart which shows the video recording process procedure. It is a figure which shows an example of the list display of the recorded video information. It is a flowchart which shows the viewing-and-listening process procedure of video information. It is a figure which shows an example of the viewing-and-listening confirmation screen of preliminary recording data. It is a flowchart which shows the recording reservation processing procedure of video information. It is a figure explaining the deletion order of video information. It is a figure explaining the deletion / restoration procedure of video information. It is a flowchart which shows the deletion processing procedure of video information.

Explanation of symbols

1 ... antenna, 2 ... receiver, 3 ... display, 4 ... video signal processor,
5 ... compression / decompression processing unit, 6 ... DVD drive, 7 ... CPU, 8 ... EPG processing unit,
9 ... Timer processing unit, 10 ... Remote control processing unit, 11 ... Remote control,
12 ... Recording management information storage unit, 13 ... Video recording device, 15 ... Recording reservation information,
16… Video management information

Claims (3)

In a video recording device that records video information such as broadcast programs on a recording device,
A timer for setting the recording start time and recording end time of the video information instructed to be recorded,
A video recording control unit for recording video information in a recording device based on the timer;
A first video file that records video information from the recording start time to a recording end time; and a second video file that records video information for a predetermined time after the recording end time, the first video A recording device in which the file and the second video file are managed by a file identification name as a different file on the file management system of the recording device; and
For each identification name of the video information to be recorded, file identification names of the first video file and the second video file, a deletion instruction flag of the first and second video files, and a viewing flag of the video information And a recording management information recording unit that records a flag indicating storage priority of the video information,
Equipped with a,
The recording device is seen containing a first and a compartment for recording the first video file, a second compartment for recording the second video file,
The capacity of the first compartment is greater than the capacity of the second compartment,
A video recording apparatus, wherein the remaining recording capacity of the video recording apparatus is managed by the first partition remaining capacity. In a video recording device that records video information such as broadcast programs on a recording device,
Set the recording start time and recording end time of the video information,
Start recording video information when the recording start time comes,
When the recording end time is reached, the video information from the recording start time to the end time is stored as a first file in the recording device,
Storing the video information of the predetermined time from the recording end time as a second file in the recording device after a predetermined time has elapsed from the recording end time;
Register each file identification name of the first file and the second file in the video file management information for each video information identification name,
Further, the first and second file deletion instruction flag, the viewed flag of the video information and a flag indicating the storage priority of the video information are registered in the video file management information for each video information identification name ,
The second file is managed so that a total of its file capacity becomes a predetermined amount, or is managed so that a total of the number of files becomes a predetermined amount. Video file management method. In a video recording device that records video information such as broadcast programs on a recording device,
Set the recording start time and recording end time of the video information,
Start recording video information from before the recording start time,
The video information from the start of recording video information until the recording start time when the recording start time comes is stored as a third file in the recording device,
When the recording end time is reached, the video information from the recording start time to the end time is stored as a first file in the recording device,
The first file and the second file or the third file for storing video information of the predetermined time from the recording end time as a second file in the recording device after a predetermined time has elapsed from the recording end time. Each file identification name is registered in the video file management information for each video information identification name,
Further, a deletion instruction flag for the first, second and third files, a viewing flag for the video information, and a flag indicating the storage priority of the video information are registered in the video file management information for each video information identification name. as well as,
The second file or the third file is managed so that the total file capacity thereof is a predetermined amount, or is managed so that the total number of files thereof is a predetermined amount. Video file management method for video recording device.

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