JP3997356B2 - Data recording / reproducing apparatus and data recording / reproducing method - Google Patents

Description

  The present invention relates to a data recording / reproducing apparatus and a data recording / reproducing method, and in particular, when data is overwritten, data recording / reproduction in which an operation for selecting data to be overwritten and an operation for overwriting can be easily performed. The present invention relates to an apparatus and a data recording / reproducing method.

  Conventionally, various techniques have been disclosed for more easily selecting data to be overwritten and already stored for overwriting of recorded data in a data recording / reproducing apparatus.

  For example, in Patent Document 1, in an audio recording / reproducing apparatus, it is possible to set the order in which audio files recorded in advance are erased, and when the recording area runs short during recording of audio data, the order is set. A technique for overwriting a file is disclosed.

Further, in Patent Document 2, when the storage capacity of the broadcast information storage unit for storing broadcast information is lost in the program storage device, the stored order, the order stored at the time closest to the current time, or already stored. A technique for overwriting broadcast information in accordance with the order of importance stored in advance with respect to broadcast information is disclosed.
JP 2002-341898 A JP 2000-333359 A

  However, in the technique disclosed in Patent Document 1, since the user is required to perform a complicated operation of setting the order of deleting files in advance, it is necessary to consider simplification of the operation. Further, the technique disclosed in Patent Document 2 requires the same consideration as Patent Document 1 in that the order of importance must be stored in advance.

  In the technique disclosed in Patent Document 2, when program information that has already been stored is to be overwritten in the order in which it is stored, or in the order stored in the time close to the current time, Such a complicated work was not required. However, in the stored information, such an order is not necessarily the order that the user desires to delete.

  That is, the conventional technique has a problem that the user needs a complicated operation in order to select data to be overwritten in a user's desired mode.

  The present invention has been conceived in view of such circumstances, and its purpose is to perform data recording / reproduction in which data desired by the user is to be overwritten and the operation required by the user is made simpler. An apparatus and a data recording / reproducing method are provided.

A data recording / reproducing apparatus according to an aspect of the present invention includes an operation unit that is operated to input information, a reception unit that receives video data, and a video storage unit that stores video data. recording means includes temporary storage means is a ring buffer for temporarily recording the program data, and a file recording means for recording as a file image data for each program, video data received by the receiving unit in the temporary storage means And a time shift reproduction means for performing a time shift reproduction for reproducing the video data recorded in the temporary storage means, a reproduction means for reproducing the file, and the reception means received by the reception means to the file recording means Recording control means for recording video data, information storage means for storing information of the file recorded in the file recording means, A file information display means for displaying a list of files recorded in the file recording means on a predetermined display device based on information of the file stored in the information storage means; and the file displayed by the file information display means. using the list, further comprising a file designating means for designating a file in the file recorded in the file recording means, by the file designating means when the reproducing operation is being performed by the time-shift playing means When the operation unit is operated in the first mode when the file is specified, the playback unit plays the specified file, and the operation unit is different from the first mode. When operated in the second mode, the recording control means sends the video data received by the receiving means to the file recording means. Wherein the recording by overwriting data in the specified file.

According to one aspect of the present invention, the first mode for designating the file recorded in the file recording means when time-shifted playback is performed in the same manner as when playing the file, and for playing back the operating means. If the operation is performed in a second mode different from the above, video data can be recorded as it is as a file to be overwritten as a designated file. In addition, the user can specify a file to be overwritten while viewing a list of files.

A data recording / reproducing apparatus according to another aspect of the present invention comprises an operation means operated to input information, a receiving means for receiving video data, and a video storage means for storing video data, video recording means includes temporary storage means is a ring buffer for temporarily recording the program data, and a file recording means for recording as a file image data for each program, the video said receiving means to said temporary storage means receives Time shift playback means for recording data and performing time shift playback for playing back video data recorded in the temporary storage means, and file designating means for designating a file from among the files recorded in the file recording means And a recording means for recording the video data received by the receiving means to the file recording means. Anda control means, when the specified file is made by the file designating means when the reproducing operation is being performed by the time shift reproduction means, when said operating means is operated in the first mode When the reproducing means reproduces the designated file and the operating means is operated in a second mode different from the first mode, the recording control means sends the file recording means to the file recording means. The video data received by the receiving means is recorded by overwriting the designated file.

According to another aspect of the present invention, when time shift playback is being performed, the first recording is performed in the same manner as when the file recorded on the file recording means is played back, and the operation means is played back. By operating in a second mode different from the mode, video data can be recorded as it is, with the designated file as the file to be overwritten.

  The data recording / reproducing apparatus according to the present invention includes an information storage unit that stores information of a file recorded in the file recording unit, and the file recording unit based on the information of the file stored in the information storage unit. File information display means for displaying a list of files recorded in the means on a predetermined display device, wherein the file designation means uses the file list displayed by the file information display means to use the file list. It is preferable to specify.

  As a result, the user can specify the file to be overwritten while viewing the list display of the files.

A data recording / reproducing method according to an aspect of the present invention includes an operation means operated to input information , a temporary storage means that is a ring buffer for temporarily recording program data, and a video data file for each program. a data recording and reproducing method in a data recording and reproducing apparatus and a file recording means for recording as to record the steps of receiving video data, the video data thus received in the temporary storage means, and said temporary storage means A step of performing time-shift reproduction by reproducing the video data recorded on the file, a step of storing information of the file recorded in the file recording means, and the file recording based on the information of the stored file Displaying a list of files recorded on the means on a predetermined display device; and Using the list of Le, a step of specifying a file in the file recording means recorded file, when specified the file is made when the time shift reproduction is being carried out, said operation means Is operated in the first mode, the designated file is reproduced, and when the operating unit is operated in the second mode different from the first mode, the file recording unit is operated. And recording the received video data by overwriting the designated file.

A data recording / reproducing method according to another aspect of the present invention includes an operating means operated to input information , a temporary saving means that is a ring buffer for temporarily recording program data, and a video data file for each program. A data recording / reproducing method in a data recording / reproducing apparatus comprising: a file recording unit for recording as: a step of receiving video data; a step of recording the received video data in the temporary storage unit; and the temporary storage unit Performing the time shift reproduction by reproducing the video data recorded in the file, the step of designating a file from among the files recorded in the file recording means, and the time shift reproduction when the time shift reproduction is performed. If the operation means is operated in the first mode when a file is specified, the specified When the operation unit is operated in a second mode different from the first mode, the received video data is overwritten on the designated file by the file recording unit. It is characterized by recording.

  The data recording / reproducing method according to the present invention includes a step of storing file information recorded in the file recording unit, and a file recorded in the file recording unit based on the stored file information. And displaying the list on a predetermined display device, and in the step of designating the file, the file is preferably designated using the displayed list of files.

  According to the present invention, an operation for designating data to be overwritten and an operation for executing overwriting can be performed as a series of operations. Therefore, in the data recording / reproducing apparatus, the data desired by the user can be overwritten, and the operation required by the user can be simplified.

  Further, according to the present invention, the user can specify the data to be overwritten while looking at the list display of data (file), so that the data to be overwritten can be easily specified.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of an information recording / reproducing apparatus 100 which is an embodiment of a data recording / reproducing apparatus of the present invention.

  The information recording / reproducing apparatus 100 includes a system control circuit 10 that controls the overall operation of the information recording / reproducing apparatus 100, and a timer 23 for the system control circuit 10 to check the time.

  In the information recording / reproducing apparatus 100, when a digital broadcast channel designation signal is supplied from the system control circuit 10, the tuner 11 receives a digital broadcast wave of the designated channel. At this time, the tuner 11 obtains an MPEG (Moving Picture Experts Group) signal by demodulating the received digital broadcast wave, and supplies this to the hard disk device 12 as an MPEG signal M1. The tuner 11 is supplied with a channel designation signal for analog television broadcasting (NTSC (National Television Standards Committee), PAL (Phase Alternation by Line), or SECAM (SEquential Couleur A Memoire)) from the system control circuit 10. If it is, the analog television broadcast wave of the designated channel is received. At this time, the tuner 11 supplies a television signal obtained by demodulating the received analog television broadcast wave to the MPEG encoder 14. The MPEG encoder 14 supplies a signal obtained by subjecting the television signal to MPEG coding processing to the hard disk device 12 as an MPEG signal M2.

  The hard disk device 12 supplies the reproduction MPEG signal RM to the MPEG decoder 17. The MPEG decoder 17 performs an MPEG decoding process on the MPEG signal supplied from the hard disk device 12 to obtain a video signal and supplies it to the selector 18 as a video signal DAV.

  An OSD (On Screen Display) image generation circuit 19 generates a message image signal DC to display an image corresponding to various message display commands supplied from the system control circuit 10, and supplies this to the selector 18. The selector 18 selectively selects one of the video signal DAV and the message image signal DC according to the selection signal supplied from the system control circuit 10 and supplies it to the display device 200.

  The display device 200 performs image display based on the video signal DAV or message image signal DC supplied from the information recording / reproducing device 100.

  The operation device 22 receives various operations such as an operation for designating a broadcast channel and an operation for designating a file to be reproduced from recorded files from the user, and various operation signals corresponding to the operations are sent to the system control circuit 10. To supply. Note that the operating device 22 includes, for example, a remote controller that is separated from the main body housing of the information recording / reproducing device 100. The operation device 22 does not necessarily have to be separated from the main body housing of the information recording / reproducing apparatus 100, and is configured integrally with the main body housing and a portion separated from the main body housing. May be included.

  FIG. 2 shows a plan view of the operating device 22.

  The operation device 22 is a numeric keypad 229 that is used to input numbers 0 to 9 when specifying a broadcast channel, etc., and a switch that is operated to switch between time-shift playback and recorded file playback, which will be described later. Key 220 is included. Further, the operation device 22 plays back a recorded file in order to start / stop / pause a fast-forward key 228 / rewind key 227 operated to fast-forward / rewind the playback position. A reproduction key 224 / stop key 225 / pause key 226 operated by Further, the operation device 22 is operated to input a power key 221 for switching ON / OFF of power supply to the information recording / reproducing device 100 and a user's intention to determine the content displayed on the screen or the like. A determination key 222 and a recording key 223 operated to perform a recording operation are included.

  FIG. 3 schematically shows the contents of the storage area of the hard disk 120 of the hard disk device 12.

  The hard disk 120 includes a time shift area 121 that is a ring buffer and a recording area 122 for recording information for a long time. Note that the sizes of the time shift area 121 and the recording area 122 on the hard disk 120 are determined based on, for example, information input via the operation device 22 by the user. In the hard disk 120, the position of the time shift area 121 and the position of the recording area 122 are managed by recording addresses of the areas in the memory 10 </ b> A in the system control circuit 10.

  The information recording / reproducing apparatus 100 performs a recording operation, a time shift reproduction operation, and a recorded file reproduction operation. The recording operation is an operation for recording the MPEG signal M1 or M2 obtained by receiving in the tuner 11 in the recording area 122. In the time shift reproduction operation, the MPEG signal M1 or M2 is recorded in the time shift area 121, the signal recorded in the time shift area 121 is reproduced as a reproduction MPEG signal RM, and the signal is supplied to the MPEG decoder 17 for display. This is an operation for displaying an image on the apparatus 200.

  The system control circuit 10 obtains a recording speed signal SW corresponding to the bit rate from the MPEG signal M1 or M2 obtained by receiving it at the tuner, and obtains it from a built-in register (a register not shown in the memory 10A) ) And the pickup device 1200 is operated at a speed corresponding to the recording speed signal SW to record a signal in the time shift area 121 or the recording area 122.

  The recorded file reproduction operation is an operation in which the signal recorded in the recording area 122 is reproduced as a reproduction MPEG signal RM, supplied to the MPEG decoder 17 and displayed on the display device 200.

  FIG. 4 schematically shows a recording position and a reproduction position on the hard disk 120 when time-shift reproduction is performed in the information recording / reproducing apparatus 100.

  In time shift reproduction, a recording operation is performed on the write point WP in the time shift area 121 of the hard disk 120, and a reproduction operation is performed on the lead point RP. Since the time shift area 121 is configured by a ring buffer, the recording operation in the time shift reproduction is performed so that the time shift area 121 is repeatedly used even if it is performed to the end of the time shift area 121. In the information recording / reproducing apparatus 100, when the switching key 220 is operated during such time-shift reproduction, the program recorded in the recording area 122 is reproduced.

  FIG. 4 shows a state where N files of areas 122A, 122B, 122C,... 122N are recorded in the recording area 122. A file refers to video data for each program. One program is intended for video data recorded from when a recording operation is started to when the recording operation is completed.

  The system control circuit 10 includes a memory 10A therein. The contents stored in the memory 10A include information on the program recorded in the recording area 122 as schematically shown in a table format in FIG. 5, for example. As understood from FIG. 5, the program information recorded in the recording area 122 stored in the memory 10 </ b> A includes the title of the program, the recording start position of the program in the recording area 122, and the program. This is information that is associated with the length of time (recording time).

  In the example shown in FIG. 5, the recording start position specifies the recording position by the time from the start position of the recording area 122, but is not limited to this, and is an address in the recording area 122. May be. Also, the recording time is not limited to the recording length, and may be the amount of data to be recorded.

  In the program information shown in Table 5, the recording end position in the recording area 122 of the program may be associated with the program title or the like instead of the recording time of the program. This is because the recording time can be calculated from the time information of the recording end position and the recording start position.

  In the program information, a designation check field is provided for each program. As will be described later, in the information recording / reproducing apparatus 100, a part of the files recorded in the recording area 122 can be designated for recording or reproduction (step S502 described later). The designation check column is a column that is checked when a file corresponding to the program is designated at this time.

  FIG. 5 shows information about a plurality of programs including a program with the title “AAA” and a program with the title “BBBB”. Each program corresponds to video data recorded in any one of the areas 122A, 122B, 122C,.

  Further, the memory 10A stores information about a recording reservation made by a known technique, as schematically shown in a table form in FIG. 6, for example. As can be understood from FIG. 6, the information about the recording reservation includes the recording channel (recording channel), the recording date (recording date), the recording start time (recording start time), and the recording end. This is information stored as a set in a state where time (recording end time) is associated with each other. As can be understood from FIG. 6, the recording reservation information may include a plurality of sets including recording channels or the like, or may include only a single set. When no recording reservation is set by the user, no information about the recording reservation is recorded in the table as shown in FIG.

  As information about the recording reservation, the length of time for recording may be stored instead of the time for ending recording. This is because the recording end time can be calculated from the recording start time and the length information of the recording time.

  Here, a process executed by the system control circuit 10 after the power-on of the information record generating apparatus 100 is started will be described with reference to FIG. FIG. 7 is a flowchart of a main routine executed by the system control circuit 10.

  When the power supply key 221 is operated, for example, when the information recording / generating apparatus 100 is turned on, the system control circuit 10 checks the timer 23 in S1, and the current time is stored in the memory 10A. It is determined whether or not it is the recording start time of the recording date of the scheduled recording, and if so, the process corresponding to the recording reservation (scheduled recording process) is executed in S2, and then the process returns to S1. On the other hand, if it is determined that it is not the recording start time, the process proceeds to S3. The reserved recording process is a process for recording video data of a channel designated by the recording channel in the recording area 122.

  In S3, the system control circuit 10 executes a time shift reproduction process for performing the above time shift reproduction. In S3, processing such as reception of a signal corresponding to a channel to be received by the tuner 11 is executed in response to information such as a channel change input from the operation device 22.

  Next, the system control circuit 10 determines whether or not the switching key 220 has been operated in S4. If it is determined that the switching key 220 has been operated, the process proceeds to S5. On the other hand, if it is determined that this is not the case, a process corresponding to the operated key is performed in S6, and the process returns to S1.

  In S5, the system control circuit 10 executes the recorded video reproduction process and returns the process to S1.

  Here, the detailed operation of the system control circuit 10 in the recorded video reproduction process executed in S5 will be described with reference to FIG. FIG. 8 is a flowchart of a subroutine for recorded video reproduction processing.

  In the recorded video reproduction process, the system control circuit 10 first displays a list of files recorded in the recording area 122 by referring to the storage contents in the memory 10A as shown in FIG. 200. The file list may be displayed by displaying the titles of all programs recorded in the recording area 122, or by displaying thumbnail images of the first frame image of the video data corresponding to each program. Good.

  Next, the system control circuit 10 accepts a file designation from the user in S502. For example, the user moves the operating device 22 to the position corresponding to the file to be specified while viewing the display of the file list displayed on the display device 200 and moves the cursor displayed simultaneously with the file list. By appropriately operating the key 222 or the like, information specifying a file can be input to the information recording / reproducing apparatus 100.

  Note that a single file or a plurality of files may be accepted in S502. When a single file is designated, the designated file is referred to as an Mth file recorded in the recording area 122 for convenience. Further, when an operation for designating a file is performed by the user, the system control circuit 10 accepts the designation of the file by checking a designation check column (see FIG. 5) corresponding to the designated file.

  Next, the system control circuit 10 checks the content of the key operation on the operation device 22 in S503. If it is determined that the playback key 224 has been operated, the process proceeds to S510, and if it is determined that the recording key 223 has been operated, the process proceeds to S504.

  In step S <b> 504, the system control circuit 10 sets the value of a function called P to 1. As will be described later, the function P is a function used for overwriting recording, and is a function set in advance in the system control circuit 10.

  Then, in S505, the system control circuit 10 refers to the program information as shown in FIG. 5 so that the P-th checked file in the designation check column is recorded in the recording area 122 of the file. Recording of video data received by the tuner 11 is started from the start position of the recording area. The P-th file checked in the designation check field corresponds to the P-th selected file in FIG. The video data recorded at this time is the video data of the channel selected in the immediately preceding time shift reproduction process (see S3 in FIG. 7). In step S505, the Pth selected file is overwritten. In step S505, the system control circuit 10 removes the check placed in the designation check column for the Pth selected file when overwriting recording of the Pth selected file is started.

  Next, in S506, the system control circuit 10 determines whether the recording time of the Pth selected file has elapsed since the Pth overwrite recording was started in S505. If it is determined that the time has elapsed, the process proceeds to S507.

In S507, the system control circuit 10 refers to the program information shown in FIG. 5 to determine whether or not there is a next selected file (file specified in S502). This determination is made by referring to the check column of program information as shown in FIG. 5 and determining whether or not there are still programs (files) checked in the check column. If it is determined that there is no such file, the recording operation is stopped in S509 and the process is returned. On the other hand, if it is determined that such a file exists, P is updated by adding “1” in S508, and the process returns to S505.

  On the other hand, in S510, the system control circuit 10 reproduces the Mth file.

  Next, the system control circuit 10 determines whether or not the reproduction of the currently reproduced file (M-th file) has been completed, and if it is determined that the file has been completed, the next recording area 122 is recorded in S513. Determine whether the file is recorded. If it is determined that there is a next file, the system control circuit 10 updates M by adding “1” in S514, and returns the process to S510. On the other hand, when determining that there is no next file, the system control circuit 10 returns the processing.

  In S511, if the system control circuit 10 determines that the reproduction of the currently reproduced file has not yet been completed, it determines in S512 whether or not the stop key 225 has been operated. If it is determined that it has not been operated, the process directly returns to S510, and if it is determined that it has been operated, the file playback operation is stopped and the process returns in S515.

  In the present embodiment described above, the files recorded in the recording area 122 are reproduced sequentially from the file designated by the user (M-th file) by the processing of S510 to S515. The information recording / reproducing apparatus 100 designates a plurality of files when the processes of S510 to S515 are executed, and reproduces only the designated files by the processes of S510 to S515. It may be configured.

  In the present embodiment described above, the recording operation is executed by setting the file designated by the user as the file to be overwritten by the processing of S504 to S509. When the user designates a plurality of files, the plurality of files are overwritten in order using a function called P. The order at this time may be the order recorded in the place where the address value in the recording area 122 is small, or when the user's designation is accepted in S502, the order of the file is one by one. The designations may be accepted and may be in the order accepted at this time.

  Further, in the present embodiment described above, the system control circuit 10 executes the processing described with reference to FIGS. 7 and 8 according to a program stored in advance in a memory inside the system control circuit 10. . Note that the program for executing the processing described with reference to FIGS. 7 and 8 is a CD-ROM (compact disc read only memory) configured to be detachable from the information recording / reproducing apparatus 100. It may be recorded in a memory external to the playback apparatus 100. That is, as shown in FIG. 9, the information recording / reproducing apparatus 100 may further include a CD-ROM drive 24 connected to the system control circuit 10 in addition to the configuration shown in FIG. In this case, the system control circuit 10 is inserted into the CD-ROM 201 in which a program for executing the processing described with reference to FIGS. 7 and 8 is stored in the CD-ROM drive 24. The program stored in the ROM 201 is read and the processing described with reference to FIGS. 7 and 8 is executed.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which shows the structure of the information recording / reproducing apparatus of one embodiment of this invention. It is a top view of the operating device of FIG. It is a figure which shows typically the content of the storage area of the hard disk of the hard-disk apparatus of FIG. 1 schematically shows a recording position and a reproduction position on a hard disk when time-shift reproduction is performed in the information recording / reproducing apparatus of FIG. It is a figure which shows typically an example of the memory | storage aspect of the information of the video recording program memorize | stored in the memory in the system control part of FIG. It is a figure which shows typically an example of the memory | storage aspect of the recording reservation information memorize | stored in the memory in the system control part of FIG. It is a flowchart of the main routine which the inside of the system control part of FIG. 1 performs. It is a flowchart of the subroutine of the recorded video reproduction process of FIG. It is a figure which shows the modification of a structure of the information recording / reproducing apparatus of the form shown in FIG.

Explanation of symbols

  10 system control circuit, 10A memory, 11 tuner, 12 hard disk device, 18 selector, 14 MPEG encoder, 17 MPEG decoder, 19 OSD image generation circuit, 22 operation device, 23 timer, 24 CD-ROM drive, 30 DVD recording / playback device , 31 DVD, 100 information recording / reproducing device, 120 hard disk, 121 time shift area, 122 recording area, 200 display device, 201 CD-ROM, 220 switching key, 221 power key, 222 enter key, 223 recording key, 224 playback key 225 Stop key, 229 Numeric keypad.

Claims (6)

An operating means operated to input information;
Receiving means for receiving video data;
Video storage means for storing video data,
It said image recording means includes a temporary storage means is a ring buffer for temporarily recording the program data, and a file recording means for recording as a file image data for each program,
Time-shift playback means for recording the video data received by the receiving means in the temporary storage means and performing time-shift playback for playing back the video data recorded in the temporary storage means;
Playback means for playing back the file;
Recording control means for recording the video data received by the receiving means to the file recording means;
Information storage means for storing information of the file recorded in the file recording means;
File information display means for displaying a list of files recorded in the file recording means on a predetermined display device based on the information of the files stored in the information storage means;
Using said list of said file displayed by the file information display means, further comprising a file designating means for designating a file in the file recording means recorded file,
When the operation means is operated in the first mode when a file is designated by the file designating means when a reproduction operation is being performed by the time shift reproduction means , the reproduction means When the specified file is reproduced and the operation means is operated in a second mode different from the first mode, the recording control means receives the video data received by the reception means to the file recording means A data recording / reproducing apparatus for recording by overwriting the designated file. An operating means operated to input information;
Receiving means for receiving video data;
Video storage means for storing video data,
It said image recording means includes a temporary storage means is a ring buffer for temporarily recording the program data, and a file recording means for recording as a file image data for each program,
Time-shift playback means for recording the video data received by the receiving means in the temporary storage means and performing time-shift playback for playing back the video data recorded in the temporary storage means;
File designation means for designating a file from among the files recorded in the file recording means;
Playback means for playing back the file;
Further comprising a recording control means for recording the received video data of said receiving means to said file recording means,
When the operation means is operated in the first mode when a file is designated by the file designating means when a reproduction operation is being performed by the time shift reproduction means , the reproduction means When the specified file is reproduced and the operation means is operated in a second mode different from the first mode, the recording control means receives the video data received by the reception means to the file recording means A data recording / reproducing apparatus for recording by overwriting the designated file. Information storage means for storing information of the file recorded in the file recording means;
File information display means for displaying a list of files recorded in the file recording means on a predetermined display device based on the file information stored in the information storage means;
The data recording / reproducing apparatus according to claim 2, wherein the file designating unit designates the file by using the list of files displayed by the file information display unit. Data in a data recording / reproducing apparatus comprising operating means operated to input information, temporary storage means that is a ring buffer for temporarily recording program data, and file recording means for recording video data as a file for each program A recording / playback method,
Receiving video data; and
Recording the received video data in the temporary storage means, and performing time shift reproduction by reproducing the video data recorded in the temporary storage means;
Storing file information recorded in the file recording means;
Displaying a list of files recorded in the file recording unit on a predetermined display device based on the information of the stored files;
Designating a file among the files recorded in the file recording means using the displayed list of files;
When the operation unit is operated in the first mode when the file is specified while the time shift reproduction is performed , the specified file is reproduced, and the operation unit And a step of recording the received video data by overwriting the designated file on the file recording means when operated in a second mode different from the first mode. Recording and playback method. Data in a data recording / reproducing apparatus comprising operating means operated to input information, temporary storage means that is a ring buffer for temporarily recording program data, and file recording means for recording video data as a file for each program A recording / playback method,
Receiving video data; and
Recording the received video data in the temporary storage means, and performing time shift reproduction by reproducing the video data recorded in the temporary storage means;
Designating a file from among the files recorded in the file recording means;
When the operation unit is operated in the first mode when the file is specified while the time shift reproduction is performed , the specified file is reproduced, and the operation unit A data recording / reproducing method for recording, when operated in a second mode different from the first mode, by overwriting the received video data on the designated file to the file recording means. Storing file information recorded in the file recording means;
Displaying a list of files recorded in the file recording unit on a predetermined display device based on the stored file information;
6. The data recording / reproducing method according to claim 5, wherein in the step of designating the file, the file is designated using the displayed list of files.

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