JP2005149544A - Data recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data recording and reproducing device capable of surely recording the end of a program. <P>SOLUTION: The data recording and reproducing device includes a step (S406) of commanding image recording to a file area whose write attribute flag is "0" during the execution of reserved image recording, a step (S408) for changing the write attribute flag of the file area to "1", and a step (S418) of commanding the image recording to a leading file area when the file area whose write attribute flag is "0" is not present (NO in S412) and a subscribing image recording mode is set to be ON (YES in S416) in the case of executing the image recording to the next file area (YES in S410). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a data recording / reproducing apparatus, and more particularly to an apparatus capable of recording data up to a reception time specified in advance when recording received data.

  Hard disk recorders and other data recording / reproducing devices record received signals such as radio waves on hard disks and other recording media. At this time, if the capacity of the recording medium is smaller than the data amount scheduled to be recorded, the input signal cannot be recorded on the recording medium.

  Therefore, for example, registered utility model No. 3089165 (Patent Document 1) discloses a hard disk recorder capable of always performing proper recording. This hard disk recorder includes a remaining amount detection circuit for detecting the remaining amount, a storage capacity display circuit for displaying a shortage of storage capacity, and a control circuit for controlling overwriting recording.

According to the hard disk recorder disclosed in Patent Document 1, when receiving a reservation recording command, the control circuit calculates a recordable time in the information recording area. When the storable capacity is insufficient with respect to the reserved recording time, this control circuit displays the shortage of recording capacity in the information recording area on the shortage of capacity display section. The corresponding file is deleted. In this way, even when the remaining capacity of the hard disk that can be stored is insufficient, the hard disk recorder can properly record the signal.
Registered Utility Model No. 3089165 gazette

  However, according to the hard disk recorder disclosed in Patent Document 1, when recording to the hard disk, the fact that the remaining capacity is insufficient is displayed on the display unit, but if the erasable file is not selected, it is stored. Data is not erased. For this reason, when the storage capacity of the hard disk is insufficient, it may not be possible to record until the time specified by the recording reservation.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a data recording / reproducing apparatus capable of performing designated recording even when the storage capacity of the information recording medium is insufficient. Is to provide.

  In order to solve the above-described problem, according to one aspect of the present invention, a data recording / reproducing apparatus includes: a receiving unit for receiving video / audio data; and an input unit for a user to input settings for reserved recording. A setting recording means for recording the setting of the input reserved recording, a storage area for recording data based on a recording instruction, and a recording means for recording the video / audio data in the storage area; Recording / reproducing means for randomly writing and reading video / audio data, status data recording means for recording the recording status of the video / audio data in the storage area, reservation recording While recording audio / video data based on the settings, there is a free area in the storage area that is required to record the audio / video data according to the scheduled recording settings based on the recording status. Whether a determination means for determining, based on a result of determination by the determination means, and a control means for controlling the recording and reproducing means. The storage area includes a plurality of data recording areas having a predetermined storage capacity. The status data recording means records a recording flag indicating whether video / audio data is recorded in the data recording area for each data recording area. The determination means determines that there is no free area in the storage area when any of the recording flags indicates that video / audio data is recorded in each data recording area. When it is determined that there is no free area in the storage area during recording of the video / audio data instructed to be recorded by the reservation recording setting, the control means starts recording the video / audio data based on the setting of the reservation recording. The recording / reproducing means is controlled so that the newly received video / audio data is overwritten on the already recorded video / audio data in the data recording area after the head portion of the stored area.

  According to the data recording / reproducing apparatus having the above-described configuration, the determining means is a free area necessary for recording the video / audio data according to the setting of the reserved recording based on the recording state of the video / audio data in the data recording area Is present in the storage area. For example, when any of the recorded data indicates that video / audio data is recorded in each data recording area, the determining means determines that there is no free area in the storage area. At this time, if there is no free space when the video / audio data is recorded based on the setting of the reserved recording, the recording / playback means will start from the beginning of the storage area where the recording of the video / audio data is started based on the setting. In the data recording area, the newly received video / audio data is overwritten on the already recorded video / audio data. In this way, even if there is no free space for recording new video / audio data in the storage area, the received data can be recorded continuously, so the user can specify it by setting the scheduled recording. You can watch at least the end of the program. Accordingly, it is possible to provide a data recording / reproducing apparatus capable of performing designated recording even when the capacity of the information recording medium is insufficient.

  According to another aspect of the present invention, the data recording / reproducing apparatus includes a receiving unit for receiving video / audio data, an input unit for a user to input a setting for reserved recording, and an input setting for the reserved recording Setting recording means for recording, a storage area for recording data based on a recording instruction, recording means for recording video and audio data in the storage area, and randomly accessing the recording means, Recording / reproducing means for executing writing and reading of video / audio data, status data recording means for recording the recording status of video / audio data in the storage area, and recording of video / audio data based on the setting of reserved recording In order to determine whether or not there is a free area in the storage area necessary for recording the video / audio data according to the reservation recording setting based on the recording state On the basis of the result of determination by the determination means, the newly received video / audio data has already been recorded in the storage area where the video / audio data instructed to be recorded by the reservation recording setting has already been recorded. Control means for controlling the recording / reproducing means so as to overwrite the video / audio data.

  According to the data recording / reproducing apparatus having the above configuration, it is necessary to record the video / audio data corresponding to the reserved recording setting based on the recording state during the recording of the video / audio data based on the reserved recording setting. It is determined whether a free area exists in the storage area. The control means controls the recording / reproducing means so as to write the newly received video / audio data to the storage area where the video / audio data has already been recorded in accordance with the setting based on the result of the judgment by the judgment means. . For example, when the determining means determines that there is no free area, the recording / reproducing means overwrites the newly received video / audio data on the existing data. Therefore, even if the recording means (for example, a hard disk device) has insufficient capacity for recording the video / audio data instructed to be recorded, the end of the data is surely recorded. As a result, the viewer can reproduce and view at least a part of the program corresponding to the video / audio data that is not recorded due to a lack of free space. Accordingly, it is possible to provide a data recording / reproducing apparatus capable of performing designated recording even when the recording capacity of the information recording medium is insufficient.

  Preferably, when there is no free area in the storage area, the control means records / reproduces so as to write the video / audio data newly received from the head portion of the storage area where the video / audio data has already been recorded. Write control means for controlling

  According to the data recording / reproducing apparatus having the above configuration, when a free area does not exist in the recording area, the newly received video / audio data is overwritten from the beginning of the storage area where the video / audio data is already recorded. Therefore, it is possible to record a program portion corresponding to video / audio data which is not recorded due to a lack of free space.

  Preferably, the storage area includes a plurality of data recording areas having a predetermined storage capacity. The status data recording means records a recording flag indicating whether video / audio data is recorded in the data recording area for each data recording area. The determination means determines that there is no free area in the storage area when any of the recording flags indicates that video / audio data is recorded in each data recording area. When it is determined that the free area does not exist in the storage area during the recording of the video / audio data instructed by the reservation recording setting, the write control means starts the recording of the video / audio data. In the data recording area after the portion, the recording / reproducing means is controlled so that the newly received video / audio data is overwritten on the already recorded video / audio data.

  According to the data recording / reproducing apparatus having the above configuration, when any of the recording data indicates that the video / audio data is recorded in each data recording area, the newly received video / audio data is already The recorded video / audio data is overwritten. Therefore, the user can at least view the overwritten video / audio data, that is, the video / audio data that is not recorded because there is essentially no free space.

  Preferably, the recording / reproducing means writes the video / audio data to the recording means by compressing the video / audio data. The data recording / reproducing apparatus further includes compression ratio changing means for changing the compression ratio of the video / audio data in the recording / reproducing means based on the result of the determination by the determining means.

  According to the data recording / reproducing apparatus having the above-described configuration, the amount of video / audio data written at a predetermined time can be changed. In this way, for example, when the compression ratio is increased, the amount of data to be written is reduced, so that the amount of erasure of already recorded data can be reduced.

  Preferably, when it is determined that the free area does not exist in the storage area, the compression rate changing means is the data after the head part of the data recording area where the recording of the video / audio data is started based on the setting of the reserved recording. The compression rate of the video / audio data is increased with respect to writing to the recording area.

  According to the data recording / reproducing apparatus having the above configuration, when there is no empty area in the storage area, the amount of video / audio data to be written becomes small, so that the amount of erasure of already recorded data can be reduced. .

  Preferably, the data recording / reproducing apparatus further includes a detecting means for detecting an instruction relating to writing of the audio / video data after the head portion of the area from an instruction inputted by the user during execution of the reserved recording, and And prohibiting means for prohibiting recording of the audio / video data to the head portion of the area based on the instruction.

  According to the data recording / reproducing apparatus having the above-described configuration, when the user inputs an instruction to prohibit overwriting during execution of reserved recording, the recording process can be canceled when the reserved recording becomes unnecessary. As a result, already recorded data is not erased by overwriting with other data.

  Preferably, the reserved recording data includes overwrite control data indicating whether or not overwrite recording is possible. The detecting means detects an instruction to prohibit overwriting from the instruction. When the prohibition instruction is detected, the prohibition unit changes the content of the overwrite control data so as to prohibit the overwrite recording.

  According to the data recording / reproducing apparatus having the above-described configuration, the recording process can be canceled when the reserved recording becomes unnecessary by inputting an instruction to prohibit overwriting by the user.

  Preferably, the data recording / reproducing apparatus further includes a release instruction detecting means for detecting an instruction to release protection of the video / audio data being reproduced during reproduction of the video / audio data recorded in the past in the storage area, and a protection And permission means for permitting recording of new data in the storage area in which the video / audio data being reproduced is recorded based on the instruction to cancel the recording.

  According to the data recording / reproducing apparatus having the above configuration, when the user instructs to cancel the protection of the video / audio data being reproduced during reproduction of the video / audio data recorded in the past in the storage area, New data can be recorded in the storage area where the video / audio data is recorded. At this time, for example, a flag for controlling data writing is changed. In this way, the user can efficiently organize the data in the storage area of the recording means (for example, setting for saving, setting for deleting the recorded data, etc.) while checking the contents of the video / audio data while viewing it. Can be done well.

  Preferably, the permission means is an attribute changing means for permitting recording of new data by changing an attribute of an area in which video / audio data being reproduced is recorded when an instruction to cancel protection is detected. including.

  According to the data recording / reproducing apparatus having the above-described configuration, when the user inputs an instruction to cancel the protection of the data, the attribute of the area where the video / audio data being reproduced is recorded is changed. Therefore, it is possible to record newly received video / audio data.

  Preferably, the attribute changing means changes the data indicating the attribute of the storage area in which the video / audio data being reproduced is recorded from data indicating prohibition of data recording to data allowing recording.

  According to the data recording / reproducing apparatus having the above configuration, when the user inputs an instruction to cancel the protection of the data, the data indicating the attribute of the storage area in which the video / audio data being reproduced is recorded is recorded in the data. The data indicating the prohibition is changed to the data allowing the recording. This makes it possible to efficiently organize recorded data during reproduction.

  According to the data recording / reproducing apparatus of the present invention, it is possible to reliably record the end portion of the designated program even when the storage capacity of the information recording medium is insufficient during the execution of the recording based on the reservation recording setting. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment>
A data recording / reproducing apparatus 100 according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a configuration of data recording / reproducing apparatus 100.

  The data recording / reproducing apparatus 100 includes a system control circuit 110, an OSD (On Screen Display) image generation circuit 114, an operation unit 122, a light receiving unit 124, a timing circuit 126, a display unit 128, a tuner 130, An MPEG (Moving Picture Experts Group) encoder 132, a hard disk device 140, an MPEG decoder 146, and an output unit 148 are included. The system control circuit 110 includes a memory 112. The hard disk device 140 includes an information recording / reproducing head 142 and a hard disk 144. Data recording / reproducing apparatus 100 is connected to television 150, for example.

  A signal received by the antenna 190 is detected by the tuner 130. A signal output from the tuner 130 is input to the MPEG encoder 132. The MPEG encoder 132 performs a predetermined encoding process to encode the input signal.

  A signal output from the MPEG encoder 132 is input to the hard disk device 140 via the system control circuit 110. The information recording / reproducing head 142 of the hard disk device 140 records an input signal in a predetermined storage area of the hard disk 144 based on the control of the system control circuit 110. In this way, the data recording / reproducing apparatus 100 records the television program received by the antenna 190. The hard disk device 140 also reads and outputs data recorded on the hard disk 144 based on a control signal from the system control circuit 110.

  A signal output from the hard disk device 140 is input to the MPEG decoder 146 via the system control circuit 110. The MPEG decoder 146 performs a predetermined decoding process to decode the input signal.

  A signal output from the MPEG decoder 146 is input to the output unit 148. The output unit 148 combines an input signal from the MPEG decoder 146 and an input signal from the OSD image generation circuit 114 described later, and outputs the synthesized signal. This output signal is input to the television 150 and other display devices connected to the data recording / reproducing apparatus 100. In this way, the data recording / reproducing apparatus 100 reproduces data already recorded on the hard disk device 140.

  The operation unit 122 is an operation panel provided on the front surface of the data recording / reproducing apparatus 100, for example. In such a data recording / reproducing apparatus 100, when a user inputs a predetermined instruction, the instruction is detected by the operation unit 122. The operation unit 122 outputs the detected instruction to the system control circuit 110.

  When the user outputs a predetermined instruction using a remote controller (not shown), the signal is detected by the light receiving unit 124. The light receiving unit 124 outputs the detected signal to the system control circuit 110.

  The display unit 128 displays predetermined information based on a signal output from the system control circuit 110. This information includes, but is not limited to, for example, a reception channel, time, and an operation mode (for example, a recording mode and a recording mode) of the data recording / reproducing apparatus 100.

  The data recording / reproducing apparatus 100 is an HDD (Hard Disk Drive) recorder, for example, as described above, but is not limited thereto. For example, a PC (Personal Computer) or other computer having an HDD as a storage device for image data or the like may be used. In this case, the computer processing can also be realized by causing a CPU (Central Processing Unit) to execute software for controlling the operation.

  Such software may be stored in advance in computer hardware, or may be stored and distributed in a CD-ROM (Compact Disk-Read Only Memory) or other recording medium, and the recording medium may be recorded by a disk drive device. May be temporarily stored in an HDD or other storage device that stores the program. The software is read from the storage device to a RAM (Random Access Memory) or other main storage unit and executed by the CPU. Such a computer configuration is general. Therefore, it can be said that the most essential part of the present invention is software recorded on an HDD or other storage device, or a CD-ROM or other recording medium.

  The operation itself of a computer having such a configuration is well known. Therefore, detailed description of the operation will not be repeated here.

  With reference to FIG. 2, a data storage mode in data recording / reproducing apparatus 100 according to the present embodiment will be described. FIG. 2A is a diagram illustrating one mode of a configuration of an area for storing data in the hard disk 144. FIG. 2B is a diagram showing details of a storage area included in the hard disk 144.

  As shown in FIG. 2A, the hard disk 144 includes a system management area 200, a time shift buffer area 220, and a storage area 240 as areas for storing data.

  In the system management area 200, for example, system control data for controlling the operation of the data recording / reproducing apparatus 100 is stored. This system control data is stored in the recording reservation data set by the user (for example, recording start date / time, end date / time, reception channel, recording mode, etc.), or in the time shift buffer area 220 or the storage area 240. Data attributes.

  Note that the recording reservation is not limited to the case where the recording start date and time and the end date and time and the reception channel are set as described above. For example, a reservation method (so-called one-touch recording reservation or the like) in which a recording time is set according to the number of times a specific button is pressed may be used. In this case, a predetermined time (for example, every 15 minutes, every 30 minutes, etc.) from the time when the button is pressed becomes the reserved recording time. Also, the reception channel set when the button is pressed becomes the recording channel at that time.

  In the time shift buffer area 220, program data received by the data recording / reproducing apparatus 100 via the tuner 130 is temporarily recorded. The capacity of this area is, for example, several tens GB (Giga Byte), but the capacity of the time shift buffer area 220 is not limited to this.

  In the storage area 240, information (that is, recorded data) instructed to store data in accordance with a user instruction is recorded. For example, when a user presses a recording button on the data recording / reproducing apparatus 100, or when a recording reservation is set in advance, those data are stored in the storage area 240.

  Referring to FIG. 2B, the system management area 200 includes a recording data management area 202 and a file data management area 204.

  The recording data management area 202 stores data for recording reservation (for example, recording start date / time, end date / time, reception channel, recording mode, etc.). The file data management area 204 stores data for managing the usage status of each file area in the time shift buffer area 220. The contents of these data will be described in detail in FIG.

  The data recorded in the system management area 200 of the hard disk 144 will be described with reference to FIG. FIG. 3A shows data stored in the recording data management area 202 in the system management area 200. FIG. 3B shows data stored in the file data management area 204 in the system management area 200.

  As shown in FIG. 3A, the recording reservation information is stored in the recording data management area 202. For example, the recording reservation number is stored in the data area D300. The recording start date and time is stored in the data area D302. The recording end date and time is stored in the data area D304. The recording channel is stored in the data area D306.

  The recording mode is stored in the recording area D308. This recording mode is a setting for storing data in the storage area 240. This setting includes, for example, a standard mode or a long-time recording mode.

  The file overwrite control flag is stored in the data area D310. When this flag is set to “file overwriting impossible”, data is not stored in this file area. If the flag is set to “file overwritable”, the data can be stored in this file area.

  Thus, the data stored in each area is uniquely managed by the recording reservation number stored in the data area D300. This number is automatically given by the system control circuit 110 according to the recording reservation setting by the user.

  Referring again to FIG. 3A, when a recording reservation is further added after the recording reservation already set by the user, additional reservation data is stored in the data areas D320 to D330. In such a plurality of recording reservations, the manner in which data is stored is not limited to that shown in FIG.

  Next, with reference to FIG. 3B, data representing the usage status of the file area in the storage area 240 will be described.

  As shown in FIG. 3B, the file data management area 204 in the system management area 200 stores data indicating whether or not each file area in the storage area 240 is in use. Here, the file area refers to a data storage area managed in advance by the system control circuit 110, which is a division formed in advance for recording data. When data is being recorded, when the capacity of the file area being recorded becomes full, the system control circuit 110 detects this and records the data in the free file area. Thereby, the data recording / reproducing apparatus 100 can continue recording.

  For example, as shown in FIG. 3B, when data “1” is stored in data area D360, file area “9000” in storage area 240 indicates that it is in use. When data “0” is stored in the data area D370, it indicates that the file area “9001” in the storage area 240 is unused (that is, an empty area).

  With reference to FIG. 4, a control structure of data recording / reproducing apparatus 100 according to the present embodiment will be described. FIG. 4 is a flowchart showing the procedure of the recording process executed by the system control circuit 110 of the data recording / reproducing apparatus 100. This process is executed when the user has set a recording reservation.

  In step S <b> 402, system control circuit 110 detects the time based on the signal input from timer circuit 120.

  In step S404, system control circuit 110 determines whether or not the current time is the recording start time based on the detected time and the data stored in recording data management area 202. If it is determined that the current time is the recording start time (YES in step S404), the process proceeds to step S406. If not (NO in step S404), the process ends.

  In step S406, system control circuit 110 commands recording to a file area whose write attribute flag is “0” in storage area 240. As a result, the received video / audio data is written in the area.

  In step S408, the system control circuit 110 changes the write attribute flag of the file area in which data is written in the file data management area 204 of the hard disk 144 to “1”.

  In step S410, system control circuit 110 determines whether or not to perform recording in the next file area. This determination is made, for example, based on whether or not a recording command signal is output when the current writing is completed. If it is determined that recording to the next file area is to be executed (YES in step S410), the process proceeds to step S412. If not (NO in step S410), the process ends.

  In step S412, system control circuit 110 determines whether or not there is a file area whose write attribute flag is “0”. This determination is made, for example, by sequentially scanning the data stored in each data area with respect to the file data management area 204. For example, when there is a file area where data can be written, a data area whose write attribute flag is “0” is detected. If there is a file area whose write attribute flag is “0” (YES in step S412), the process proceeds to step S414. If not (NO in step S412), the process proceeds to step S416.

  In step S 414, system control circuit 110 increments the file area number by “1” in the temporary work area of memory 112.

  In step S416, system control circuit 110 determines whether or not the overwrite recording mode is set to ON. This determination is made based on a value read from a predetermined data area of the recording data management area 202 in which the data of the reserved recording currently being executed is stored. If overwrite recording mode is set to ON (YES in step S416), the process proceeds to S418. If not (NO in step S416), the process ends.

  In step S418, system control circuit 110 commands recording to the first file area of storage area 240 where data writing based on reserved recording has started.

  In step S420, system control circuit 110 detects the current time based on the signal input from time measuring circuit 126.

  In step S422, system control circuit 110 determines whether or not the current time is the recording end time. If the current time is the recording end time (YES in step S422), the process proceeds to step S430. If not (NO in step S422), the process proceeds to step S424.

  In step S424, system control circuit 110 commands recording to a file area having the next number.

  In step S430, system control circuit 110 commands the end of recording.

  An operation of data recording / reproducing apparatus 100 according to the present embodiment based on the above-described structure and flowchart will be described.

  When the scheduled recording time preset by the user is reached (YES in step S404), recording to a writable file area in storage area 240 is commanded (step S406).

  If the scheduled recording time is longer than the free area of storage area 240, it is determined that recording to the next file area is to be executed (YES in step S410), and whether there is an area where data can be recorded. Confirmed (step S412). If there is no data writable area in storage area 240 (NO in step S412) and overwrite recording mode is set to ON (YES in step S416), the received program based on the recording reservation Is written in a predetermined head area of the storage area 240 where recording is started (step S418).

  Thereafter, until the recording end time is reached (NO in step S422), data is overwritten and recorded in the file area of the storage area 240 (step S424). Thereafter, when the scheduled recording end time comes (YES in step S422), the data recording / reproducing apparatus 100 ends the series of recording operations based on the scheduled recording settings.

  As described above, according to the data recording / reproducing apparatus 100 according to the present embodiment, when a shortage of a predetermined storage area is detected during execution of recording based on the reserved recording setting, reception data is recorded first. The received data is overwritten in the designated area. In this way, since the second half of the program for which the user has set reservation recording is recorded reliably, the user can surely watch the ending portion of the program.

<Second Embodiment>
Hereinafter, a second embodiment of the present invention will be described. The data recording / reproducing apparatus 100 according to the present embodiment is different from the first embodiment described above in that it has a function of changing the data compression rate when data is overwritten based on the recording reservation setting. The data recording / reproducing apparatus according to the present embodiment has the same hardware configuration as that of the data recording / reproducing apparatus 100 according to the first embodiment. The function about them is the same. Therefore, detailed description thereof will not be repeated here.

  With reference to FIG. 5, a control structure of data recording / reproducing apparatus 100 according to the present embodiment will be described. FIG. 5 is a flowchart showing the procedure of recording processing executed by the system control circuit 110 of the data recording / reproducing apparatus 100. The same processes as those in the first embodiment described above are denoted by the same step numbers, and description thereof will not be repeated here.

  In step S500, system control circuit 110 changes the data compression rate when writing to hard disk device 140. This change reduces the compression rate. The changed compression rate is selected from a plurality of compression rates stored in advance in the memory 112 of the system control circuit 110, for example. The size of the compression rate is not particularly limited.

  The operation of the data recording / reproducing apparatus according to the present embodiment based on the above-described structure and flowchart will be described. The description of the same operation as that of the first embodiment is not repeated here.

  When the data recording / reproducing apparatus 100 is performing reserved recording and the data storage capacity in the storage area 240 is insufficient, if the overwrite recording mode is set to ON (YES in step S416), the beginning of the file area Recording to the number is commanded (step S418). At this time, the data compression rate when the signal output from the MPEG encoder 132 is written to the hard disk 144 is changed (step S500), and the recording is continued.

  As described above, according to the data recording / reproducing apparatus 100 according to the present embodiment, when overwriting recording is performed based on reserved recording, the compression rate is increased, so that the data overwriting amount is reduced. Therefore, it is possible to reduce the amount of erasure of already recorded data. As a result, the data recording / reproducing apparatus 100 can record the reserved recording to the end while suppressing the recorded data erasure amount.

<Third Embodiment>
Hereinafter, a third embodiment of the present invention will be described. The data recording / reproducing apparatus according to the present embodiment is different from the data recording / reproducing apparatus 100 according to the above-described embodiments in that it has a function of changing the overwrite recording mode during reserved recording.

  Note that the data recording / reproducing apparatus according to the present embodiment has the same hardware configuration as that of the data recording / reproducing apparatus 100 shown in FIG. Their functions are the same. Therefore, description thereof will not be repeated here.

  With reference to FIG. 6 and FIG. 7, a control structure of the data recording / reproducing apparatus according to the present embodiment will be described. FIG. 6 and FIG. 7 are flowcharts showing the procedure of processing executed by the system control circuit of the data recording / reproducing apparatus 100 according to the present embodiment. Note that the same step numbers are assigned to the same processes as those in the above-described embodiments, and description thereof will not be repeated.

  In step S700, system control circuit 110 executes overwrite recording mode change processing to be described later. When this process is executed, the setting for whether or not overwriting is possible in the area given for the reserved recording is changed.

  In step S702, system control circuit 110 detects an instruction to display the setting screen for the overwrite recording mode. This detection is performed, for example, when a user operates a remote controller (not shown) to instruct display of a setting screen for a predetermined overwrite recording mode.

  In step S704, the system control circuit 110 reads data set for the file area being recorded from the system management area 200.

  In step S706, system control circuit 110 outputs a display command for the read data. Thereby, the reservation information is displayed on the television 150 connected to the data recording / reproducing apparatus 100.

  In step S708, system control circuit 110 detects that the overwrite recording mode has been changed from OFF to ON. For example, when the user changes the display of the overwrite recording mode from OFF to ON by performing a predetermined operation (for example, pressing a remote control button) on the reservation information display screen, the change is detected.

  In step S710, system control circuit 110 saves the changed overwrite recording mode in a predetermined data area of system management area 200. Thereby, the change of the overwrite recording mode becomes effective.

  An operation of data recording / reproducing apparatus 100 according to the present embodiment based on the above-described structure and flowchart will be described. The description of the same operation as that of the data recording / reproducing apparatus according to each of the above embodiments will not be repeated here.

  When the user starts changing the setting of the overwrite recording mode using the remote controller while the data recording / reproducing apparatus 100 is executing the reserved recording, the data recording / reproducing apparatus 100 detects an instruction to display the change screen (step S702). ). The reservation data is read from the system management area 200 (step S704), and the data is displayed on the television 150 (step S706).

  When the user changes the overwrite recording mode initially set to ON to OFF (step S708), the changed data is stored in the recording data management area 202 of the system management area 200. Thereafter, when there is no more area for writing data in the storage area 240 of the hardware 144 (NO in step S412), the overwrite recording mode is set to OFF (NO in step S416). The apparatus 100 ends the reserved recording.

  In this case, since the user is in the vicinity of the data recording / reproducing apparatus 100, even if the received program is not recorded in the data recording / reproducing apparatus 100 based on the preset recording information set in advance, the program being broadcast is viewed. can do. Further, the data already recorded in the storage area 240 is stored as it is without being erased.

  As described above, according to the data recording / reproducing apparatus 100 according to the present embodiment, the user can change the setting of the overwrite recording mode during execution of the reserved recording. Therefore, for example, even if the overwrite recording mode is initially set to ON, by changing the setting in the middle, the user can view the program being received while leaving the already recorded data. it can. Moreover, since the setting of the recording mode can be easily changed as described above, an erroneous setting by the user can be canceled.

<Fourth embodiment>
Hereinafter, the fourth embodiment of the present invention will be described with reference to FIGS. The data recording / reproducing apparatus according to the present embodiment is different from the data recording / reproducing apparatus according to the above-described embodiments in that it has a function of changing the setting of overwrite recording for data recorded in the past. . Note that the data recording / reproducing apparatus according to the present embodiment has the same hardware configuration as that of the data recording / reproducing apparatus 100 shown in FIG. The function about them is the same. Therefore, description thereof will not be repeated here.

  With reference to FIG. 8, data recorded in data recording / reproducing apparatus 100 according to the present embodiment will be described. 8A and 8B are diagrams for explaining data changes in the system management area 200 of the hard disk 144, respectively.

  As shown in FIG. 8A, in the recording data management area 202 of the system management area 200, a recording reservation number and a flag indicating whether a file can be overwritten are recorded in each data area. ing. For example, as shown in FIG. 8A, for the recording reservation number “01”, overwriting of the initial file is set to “impossible” (flag “1” in the data area D310).

  In such a state, when the user performs a predetermined operation, it is possible to change the setting so that the file can be overwritten for the same recording reservation number “01” (the flag “in FIG. 8B”). 0 ").

  A control structure of data recording / reproducing apparatus 100 according to the present embodiment will be described with reference to FIG. FIG. 9 is a flowchart showing a procedure of processing executed by the system control circuit 110 of the data recording / reproducing apparatus 100 having a function of changing the overwrite recording mode during reproduction.

  In step S1000, system control circuit 110 executes reproduction overwrite recording mode change processing to be described later. When this process is executed, data for controlling whether or not to allow overwriting recording in the system management area 200 is changed.

  With reference to FIG. 10, the control structure of data recording / reproducing apparatus 100 according to the present embodiment will be further described. FIG. 10 is a flowchart showing the procedure of the overwrite overwrite recording mode change process executed by the system control circuit 110.

  In step S1002, system control circuit 110 determines whether data recorded in the past is being reproduced. This determination is made, for example, by detecting whether the current operation mode of the data recording / reproducing apparatus 100 is the recording mode or the reproduction mode. If data recorded in the past is being reproduced (YES in step S1002), the process proceeds to step S1004. If not (NO in step S1002), the process returns to the main process.

  In step S1004, system control circuit 110 determines whether or not an input for setting overwriting ON is detected for data recorded in the past. This determination is made based on, for example, whether or not a signal corresponding to the setting is input from the operation unit 122 or the light receiving unit 124. If an input of setting for overwriting recording ON is detected (YES in step S1004), the process proceeds to step S1006. If not (NO in step S1004), the process returns to the main process.

  In step S1006, system control circuit 110 changes the write attribute flag to “0” for the recorded data being reproduced.

  An operation of data recording / reproducing apparatus 100 according to the present embodiment based on the above-described structure and flowchart will be described. The description of the same operation as that of the data recording / reproducing apparatus according to each of the above embodiments will not be repeated here.

  When the user executes a predetermined operation while the data recording / reproducing apparatus 100 is reproducing the recorded data, it is detected that an instruction to change the overwrite recording mode has been issued (step S1000). When the user changes overwriting to ON for the current setting displayed on television 150 (YES in step S1004), the changed setting is stored in system management area 200 (step S1006).

  As a result, when the data recording / reproducing apparatus 100 executes the next scheduled recording, if the data area necessary for recording is insufficient in the storage area 240, the recording data is a file area that is overwritten by the user. Is written to.

  As described above, according to the data recording / reproducing apparatus 100 according to the present embodiment, the user can change the setting of the overwrite recording mode during reproduction of the recorded data. Even when the recording area is insufficient, data can be written in an area where overwriting recording is permitted. This increases the free space in the hard disk 144, so that the data recording / reproducing apparatus 100 can increase the file area required in the future. Further, since the user can change the setting of the overwrite recording mode while confirming the contents of the recorded data (during data reproduction), the file can be efficiently organized.

  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 block diagram showing the structure of the data recording / reproducing apparatus which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the data storage area in the hard-disk apparatus of the data recording / reproducing apparatus shown in FIG. It is a figure for demonstrating the data memorize | stored in the hard-disk apparatus of the data recording / reproducing apparatus shown in FIG. It is a flowchart showing the procedure of the process which the data recording / reproducing apparatus concerning the 1st Embodiment of this invention performs. It is a flowchart showing the procedure of the process which the data recording / reproducing apparatus concerning the 2nd Embodiment of this invention performs. It is a flowchart (the 1) showing the procedure of the process which the data recording / reproducing apparatus concerning the 3rd Embodiment of this invention performs. It is a flowchart (the 2) showing the procedure of the process which the data recording / reproducing apparatus concerning the 3rd Embodiment of this invention performs. It is a figure for demonstrating the data memorize | stored in the hard-disk apparatus of the data recording / reproducing apparatus which concerns on the 4th Embodiment of this invention. It is a flowchart (the 1) showing the procedure of the process which the data recording / reproducing apparatus which concerns on the 4th Embodiment of this invention performs. It is a flowchart (the 2) showing the procedure of the process which the data recording / reproducing apparatus concerning the 4th Embodiment of this invention performs.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Data recording / reproducing apparatus, 110 System control circuit, 112 Memory, 114 OSD image generation circuit, 122 Operation part, 124 Light receiving part, 126 Time measuring circuit, 128 Display part, 130 Tuner, 132 MPEG encoder, 140 Hard disk drive, 142 Information recording Playback head, 144 hard disk, 146 MPEG decoder, 148 output unit, 150 TV, 190 antenna.

Claims (11)

Receiving means for receiving video and audio data;
An input means for the user to enter settings for scheduled recording;
A setting recording means for recording the setting of the input reservation recording;
A storage unit for recording data based on a recording instruction, and a recording unit for recording the video / audio data in the storage region;
Recording / reproducing means for randomly accessing the recording means and executing writing and reading of the video / audio data;
Status data recording means for recording the recording status of the video and audio data in the storage area;
During the recording of the video / audio data based on the reservation recording setting, a free area necessary for recording the video / audio data corresponding to the reservation recording setting exists in the storage area based on the recording state. A determination means for determining whether or not,
Control means for controlling the recording / reproducing means based on the result of the judgment by the judging means,
The storage area includes a plurality of data recording areas having a predetermined storage capacity,
The status data recording means records a recording flag indicating whether or not the video / audio data is recorded in the data recording area for each of the data recording areas,
The determination means determines that the empty area does not exist in the storage area when each of the recording flags indicates that the video / audio data is recorded in each of the data recording areas,
When it is determined that the free area does not exist in the storage area during the recording of the video / audio data instructed to be recorded by the setting of the reserved recording, the control means performs video / audio based on the setting of the reserved recording Controls the recording / reproducing means so that newly received video / audio data is overwritten on the previously recorded video / audio data in the data recording area after the beginning of the storage area where data recording has started. A data recording / reproducing apparatus. Receiving means for receiving video and audio data;
An input means for the user to enter settings for scheduled recording;
A setting recording means for recording the setting of the input reservation recording;
A storage unit for recording data based on a recording instruction, and a recording unit for recording the video / audio data in the storage region;
Recording / reproducing means for randomly accessing the recording means and executing writing and reading of the video / audio data;
Status data recording means for recording the recording status of the video and audio data in the storage area;
During the recording of the video / audio data based on the reservation recording setting, a free area necessary for recording the video / audio data corresponding to the reservation recording setting exists in the storage area based on the recording state. A determination means for determining whether or not,
Based on the result of the determination by the determination means, the newly received video / audio data has already been recorded in the storage area where the video / audio data instructed to be recorded by the setting of the reserved recording has already been recorded. A data recording / reproducing apparatus comprising: control means for controlling the recording / reproducing means so as to overwrite the video / audio data.   When the free area does not exist in the storage area, the control means writes the video and audio data newly received from the head portion of the storage area in which the video and audio data has already been recorded. The data recording / reproducing apparatus according to claim 2, further comprising write control means for controlling the recording / reproducing means. The storage area includes a plurality of data recording areas having a predetermined storage capacity,
The status data recording means records a recording flag indicating whether or not the video / audio data is recorded in the data recording area for each of the data recording areas,
The determination means determines that the empty area does not exist in the storage area when each of the recording flags indicates that the video / audio data is recorded in each of the data recording areas,
When the recording control unit determines that the empty area does not exist in the storage area during the recording of the video / audio data instructed by the setting of the reserved recording, the recording of the video / audio data is started. 4. The recording / reproducing means is controlled so that the newly received video / audio data is overwritten on the already recorded video / audio data in a data recording area after the head portion of the data recording area. Data recording / reproducing apparatus. The recording / reproducing means writes the video / audio data to the recording means by compressing the video / audio data,
The data recording / reproducing apparatus further includes a compression rate changing unit for changing a compression rate of the video / audio data in the recording / reproducing unit based on a result of the determination by the determining unit. A data recording / reproducing apparatus according to claim 1.   When it is determined that the free area does not exist in the storage area, the compression rate changing means is configured to record the video and audio data starting from the beginning of the data recording area based on the reserved recording setting. 6. The data recording / reproducing apparatus according to claim 5, wherein a compression rate of the video / audio data is increased with respect to writing in the data recording area. The data recording / reproducing apparatus further includes:
Detecting means for detecting an instruction relating to writing of the video / audio data after the head portion of the area from an instruction input by the user during execution of the reserved recording;
The data recording / reproducing apparatus according to claim 2, further comprising: prohibiting means for prohibiting recording of the video / audio data with respect to a head portion of the area based on the instruction relating to the writing. The reserved recording data includes overwrite control data indicating whether or not the overwrite recording is possible,
The detection means detects an instruction to prohibit the overwriting from the instruction,
8. The data recording / reproducing apparatus according to claim 7, wherein when the prohibition instruction is detected, the prohibition unit changes the content of the overwrite control data so as to prohibit the overwrite recording. The data recording / reproducing apparatus further includes:
Cancellation instruction detection means for detecting an instruction to cancel protection of the video / audio data being reproduced during reproduction of the video / audio data recorded in the past in the storage area;
2. The data recording according to claim 1, further comprising: permission means for permitting recording of new data in a storage area in which the video / audio data being reproduced is recorded based on an instruction to release the protection. Playback device.   The permission means, when an instruction to release the protection is detected, an attribute for permitting recording of the new data by changing an attribute of an area in which the video / audio data being reproduced is recorded The data recording / reproducing apparatus according to claim 9, comprising changing means.   The attribute changing means changes data representing an attribute of a storage area in which the video / audio data being reproduced is recorded from data representing prohibition of data recording to data permitting recording. The data recording / reproducing apparatus as described.

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