JP2007042238A - Recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure empty capacity of a hard disk in which data of broadcasted programs are recorded. <P>SOLUTION: In the recording apparatus receiving broadcasted data with a digital tuner 1 and recording the data in a hard disk 15, the apparatus is provided with a recording and reproducing part 14 recording a holding time for holding the data with the data and a clock part 11 clocking the elapsed time after the data is recorded in the hard disk 15, when the elapsed time clocked by the clock part 11 exceeds the holding time of data, the recording and reproducing part 14 erases the data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording apparatus that increases the free space of a recording medium by erasing data that has been recorded for a predetermined time after being recorded on the recording medium.

Conventional hard disk recorders include a recording / reproducing unit that records program data received by a digital tuner on a hard disk and reproduces the recorded data.
The hard disk recorder has a reservation function for receiving a recording start time in advance and starting recording of program data by the recording / playback unit from the received recording start time.

In the hard disk recorder configured as described above, the program data can be automatically recorded from the reserved recording start time by using the reservation function.
JP 2004-86288 A

  However, there is a problem in that reserved program data is not recorded when there is no more free space on the hard disk.

  The present invention has been made in view of such circumstances, and its purpose is to record a storage time for storing data recorded on a recording medium, and when the storage time has elapsed since the data was recorded on the recording medium An object of the present invention is to provide a recording apparatus that can increase the free capacity of the recording medium every time the data storage time elapses by configuring the data to be erased from the recording medium.

  Another object of the present invention is to record the storage time for each data recorded on the recording medium, thereby erasing the data with a different storage time for each data and reducing the free capacity of the recording medium. It is to provide a recording apparatus that can be increased.

  Furthermore, another object of the present invention is to provide a recording apparatus in which the user can arbitrarily set the storage time of the data by receiving the storage time for storing the data.

  Still another object of the present invention is to provide a table in which data types and storage times are associated with each other, specify a storage time for each data type based on the table, record data, and then store the data. To provide a recording apparatus capable of erasing data with a different storage time for each type of data and increasing the free capacity of the recording medium by erasing the data when time has elapsed. It is in.

  Furthermore, another object of the present invention is to provide a warning that data will be erased when the elapsed time after recording the data is a predetermined time before the storage time elapses. It is an object of the present invention to provide a recording apparatus that can prevent accidental erasure.

  Still another object of the present invention is to provide a recording apparatus that can specify erased data from the information by configuring the information to identify the erased data when the data is erased. Is to provide.

  Still another object of the present invention is to provide a recording apparatus capable of appropriately changing the storage time of data by changing the storage time of recorded data.

  Furthermore, another object of the present invention is to record the number of times the data is reproduced for each data, and to change the storage time according to the number of times the data is reproduced. An object of the present invention is to provide a recording apparatus capable of erasing data and increasing the free capacity of a recording medium.

  Still another object of the present invention is to reduce the storage time of data when the free space of the recording medium is less than a predetermined capacity, so that the free space of the recording medium becomes less than the predetermined capacity. Another object of the present invention is to provide a recording apparatus that can increase the free capacity of a recording medium more quickly.

  Furthermore, another object of the present invention is that even when the storage time of data has elapsed, if the free capacity of the recording medium is equal to or greater than the predetermined capacity, the data is not erased, and if the data is less than the predetermined capacity, the data is It is an object of the present invention to provide a recording apparatus that can maintain data recording even after the storage time has elapsed when the free space is equal to or greater than a predetermined capacity.

  The recording apparatus according to the present invention is a recording apparatus configured to record received data on a recording medium, a storage time recording means for recording a storage time for storing the data, and after the data is recorded on the recording medium. And a erasure unit for erasing the data when the elapsed time measured by the timing unit exceeds the storage time recorded by the storage time recording unit. .

  In the present invention, when the elapsed time after the data is recorded on the recording medium exceeds the storage time, the erasing means erases the data from the recording medium. Therefore, the data recorded on the recording medium is deleted from the recording medium every time the storage time elapses, and the free capacity of the recording medium increases.

  The recording apparatus according to the present invention is characterized in that the storage time recording means records the storage time of the data in association with the data.

  In the present invention, the storage time of the data is recorded for each data recorded on the recording medium, and the data is erased from the recording medium based on the storage time. Accordingly, the data is erased from the recording medium after the storage time that differs for each data elapses.

  The recording apparatus according to the present invention includes a storage time reception unit that receives a storage time of data, and the storage time recording unit includes a unit that records the storage time received by the storage time reception unit.

In the present invention, the storage time receiving means receives the storage time for storing the data, and the storage time recording means records the received storage time, so appropriately set the length of the storage time for storing the data, The increase rate of the free capacity of the recording medium can be adjusted.
For example, the free space of the recording medium can be secured by setting the storage time shorter as the capacity of data recorded in a certain period is larger.

  The recording apparatus according to the present invention includes a receiving unit that receives discrimination data for discriminating the type of broadcast data, a table that associates the type of data and a storage time, and the discrimination data received by the table and the receiving unit. And an erasing unit for erasing the data when the elapsed time measured by the timing unit exceeds the storage time specified by the identifying unit. Means are provided.

In the present invention, the receiving unit receives the determination data for determining the type of data, and the specifying unit specifies the storage time of the data based on the received determination data and the table.
Then, the erasing unit erases the data from the recording medium based on the storage time specified by the specifying unit.
Therefore, data is erased with different storage times for each type of data, and the free capacity of the recording medium increases.

  The recording apparatus according to the present invention includes a determination unit that determines whether or not a predetermined time before the storage time elapses from when the data is recorded on the recording medium, based on the time measurement result and the storage time of the time measuring unit. And a warning means for warning that the data will be erased when the determination means determines that the predetermined time has passed.

  In the present invention, if it is a predetermined time before the storage time elapses, the warning means warns that the data will be deleted, thereby notifying the user that the data will be deleted within the predetermined time. Can do.

  The recording apparatus according to the present invention is characterized by comprising means for recording information for specifying the erased data when the erasure means erases the data.

  In the present invention, when data is erased from the recording medium, information for specifying the erased data is recorded. Therefore, the data erased by the erasing means can be specified from the recorded information.

  The recording apparatus according to the present invention is characterized by comprising changing means for changing the recorded storage time.

  In the present invention, the data storage time can be appropriately changed by the changing means. When the length of the storage time is changed, the increase rate of the free capacity of the recording medium changes.

  The recording apparatus according to the present invention includes a reproducing unit that reproduces data recorded on a recording medium, and a reproduction number recording unit that records the number of times reproduced by the reproducing unit for each reproduced data, the changing unit Comprises means for changing the storage time in accordance with the number of reproductions recorded by the reproduction number recording means.

In the present invention, the changing means changes the storage time according to the number of times of reproduction of the data recorded on the recording medium. Therefore, the increase rate of the free capacity of the recording medium changes according to the number of data reproductions.
For example, when the recording medium records data having been reproduced one or more times, the increase rate of the free capacity of the recording medium can be increased by reducing the storage time.

  The recording apparatus according to the present invention includes capacity determining means for determining whether or not the free capacity of the recording medium is equal to or greater than a predetermined capacity, and the changing means is recorded when the capacity determining means determines NO A means for shortening the storage time is provided.

  In the present invention, when the free space of the recording medium becomes less than the predetermined capacity, the storage time of the data recorded on the recording medium is shortened, so that the storage time is shortened more quickly. In addition, data can be erased from the recording medium, and the free space of the recording medium can be increased.

  The recording apparatus according to the present invention includes means for recording received data under a directory having a hierarchical structure, capacity determination means for determining whether or not a free space of a recording medium is equal to or greater than a predetermined capacity, A means for moving the data from the one directory to another directory having a hierarchical structure when the elapsed time measured by the time measuring means exceeds the data storage time, and the erasing means comprises the time counting If the elapsed time measured by the means exceeds the storage time and the capacity determining means determines NO, the data under the other directory is erased.

In the present invention, received data is recorded under one directory, and when the data storage time has elapsed, the data moves from one directory to another directory. Then, the erasing unit erases the data under the other directory because the storage time has passed when the free capacity of the recording medium is less than the predetermined capacity.
Therefore, even when the storage time has elapsed, data is not erased when the free capacity of the recording medium is greater than or equal to the predetermined capacity.

  According to the present invention, when the storage time for storing data elapses, the free space of the recording medium can be increased by deleting the data from the recording medium.

  According to the present invention, it is possible to erase the data with different storage times for each data recorded on the recording medium, and to increase the free capacity of the recording medium.

  According to the present invention, the user can arbitrarily set the data storage time.

  According to the present invention, it is possible to increase the free capacity of a recording medium by erasing data with different storage times for each type of data.

  According to the present invention, it is possible to prevent data from being accidentally erased from a recording medium.

  According to the present invention, the data erased from the recording medium by the erasing means can be specified.

  According to the present invention, the storage time of data recorded on a recording medium can be changed as appropriate.

  According to the present invention, it is possible to increase the free capacity of a recording medium by erasing data with a storage time corresponding to the number of reproductions.

  According to the present invention, when the free capacity of the recording medium becomes less than the predetermined capacity, the free capacity of the recording medium can be increased more quickly.

  According to the present invention, when the free space is greater than or equal to the predetermined capacity, data recording can be maintained even after the storage time has elapsed, and when the free space is less than the predetermined capacity, the storage time has elapsed. Data can be erased.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
FIG. 1 is a hard disk recorder according to Embodiment 1 of the present invention. The hard disk recorder according to the first embodiment is configured to record received program data and a storage time for storing the data, and to erase the data when the data storage time has elapsed.

  In the figure, reference numeral 1 denotes a digital tuner that amplifies an RF signal received by the antenna A and detects a signal of a selected channel. The digital tuner 1 performs AD conversion of the detected signal into digital data, and performs AD conversion. Data is supplied to the demodulator 2. The channel to be detected is set by a signal given from the control unit 9.

  Data output from the digital tuner 1 is modulated by an OFDM (Orthogonal Frequency Division Multiplexing) method, and the demodulator 2 demodulates the data into an MPEG2TS format transport stream, and demodulates the demodulated transport stream. This is given to the multiplexer 3 and the selector 12.

  The transport stream is composed of a plurality of TS packets, and a video stream and an audio stream are restored from the plurality of TS packets.

The demultiplexer 3 selects video and audio TS packets from the transport stream, and applies the video stream and audio stream including the selected TS packets to the video buffer 4a and the audio buffer 4b, respectively.
Further, the demultiplexer 3 selects program arrangement information (SI: Service Information) included in the transport stream, and provides the selected program arrangement information to the EPG decoder 5c. The program arrangement information includes information such as the title of the program to be broadcast, the channel, the broadcast start time, the broadcast end time, and the genre to which the program such as a movie or a drama belongs.

  The EPG decoder 5 c generates program guide image data based on the program arrangement information supplied from the demultiplexer 3, and supplies the generated program guide image data to the OSD display processing unit 6. The OSD display of the program guide by the EPG decoder 5 c and the OSD display processing unit 6 is controlled by the control unit 9.

  The video buffer 4a and the audio buffer 4b output the video stream and audio stream supplied from the demultiplexer 3 to the video decoder 5a and audio decoder 5b, respectively, at a predetermined timing.

  The video decoder 5a demodulates the video stream given from the video buffer 4a according to the compression / decompression method of the MPEG2 format, and gives the demodulated video stream to the OSD display processing unit 6.

  The OSD display processing unit 6 generates a video stream obtained by synthesizing the image of the data provided from the EPG decoder 5c or the control unit 9 with the video stream output from the video decoder 5a, and the generated video stream Is applied to the video signal output unit 7a at the timing of

  The audio decoder 5b demodulates the audio stream supplied from the audio buffer 4b in accordance with an MPEG2 AAC (Advanced Audio Coding) format compression / decompression method, and supplies the demodulated audio stream to the audio signal output unit 7b at a predetermined timing.

  The video signal output unit 7 a and the audio signal output unit 7 b DA convert the video stream and audio stream supplied from the OSD display processing unit 6 and the audio decoder 5 b into analog video signals and audio signals, and perform the D / A converted video signal. And the audio signal are output to an external display device and speaker (not shown).

The selection unit 12 selects the TS packet of the selected channel from the transport stream supplied from the demodulation unit 2, and provides the selected TS packet to the buffer memory 13.
In the transport stream obtained from one channel, TS packets of 1 to 3 programs are multiplexed, and the selection unit 12 selects a TS packet of a designated program from among the multiplexed TS packets. To the buffer memory 13.

  The buffer memory 13 stores the TS packets selected by the selection unit 12 and sequentially supplies them to the recording / reproduction unit 14.

  The recording / reproducing unit 14 modulates the TS packet provided from the buffer memory 13 into a predetermined data format according to the signal provided from the control unit 9, and records the modulated data on the hard disk 15. The recording / reproducing unit 14 reads data recorded on the hard disk 15, demodulates the read data into TS packet data, and supplies the data to the demultiplexer 3.

  The control unit 9 is provided with a display unit 10 for displaying information relating to data recording, reproduction, and erasure, and a clock unit 11 (time measuring means).

  The clock unit 11 has a timer function. When the recording start date and time of a program is set and the recording start date and time is counted, a signal to start recording is given to the control unit 9. The control unit 9 receives the recording start signal and executes processing related to data recording of the program. Similarly, when the recording end date / time of the program is set in the clock unit 11 and the recording unit 11 counts the recording end date / time, a recording end signal is given to the control unit 9.

In addition, the control unit 9 is provided with a receiving unit 16 that includes a photodiode and receives an infrared light signal transmitted from the remote control device 17.
Further, the control unit 9 stores 7 days as an initial value of the storage time for storing the program data recorded in the hard disk 15.

  FIG. 2 is a block diagram of the remote control device 17. The remote control device 17 includes a substantially rectangular parallelepiped housing, a program guide button 17b, a cross key 17c, a determination button 17d, a cancel button 17e, a storage time setting button 17f for setting a storage time for storing data, and a title display. A button 17g, a playback button 17h, a stop button 17i, and the like are disposed on the front surface of the casing. On the front side of the housing, there is provided a transmitter 17a including a light emitting diode that transmits a signal of the operated button with infrared light when each button is operated.

  FIG. 3 is a flowchart showing a processing procedure of the control unit 9 related to acceptance of the storage time.

  When receiving the signal from the program guide button 17b, the control unit 9 causes the EPG decoder 5c to acquire the program arrangement information output from the demultiplexer 3 (step S1).

Then, the control unit 9 causes the EPG decoder 5c to generate a program guide image based on the program arrangement information, and causes the OSD display processing unit 6 to OSD display the program guide image on the program video (step S2).
The program table is a table displaying the title of the broadcast program, the broadcast start date and time, and the broadcast end date and time of each program channel.

Next, the control unit 9 accepts the recording reservation of the program, that is, the program title name, channel, recording start date and time, and recording end date and time (step S3).
Specifically, the control unit 9 causes the OSD display processing unit 6 to display a cursor for selecting a program on the program guide, and moves the cursor up, down, left, and right when a signal from the cross key 17c is received. . As the cursor moves, programs with different channels and broadcast dates are selected with the cursor.
When the signal of the determination button 17d is received, the control unit 9 specifies the title name, channel, recording start date / time, recording end date / time, etc. of the program selected by the cursor from the program arrangement information, and the specified title name Etc. are displayed on the OSD display processing unit 6.

  FIG. 4 is a schematic diagram of an image displayed by OSD when a program is reserved. When the signal of the determination button 17d is received, the OSD display processing unit 6 performs OSD display of a list of images in which title names, channels, recording start date / time, and recording end date / time are arranged in the horizontal direction, as shown in FIG. .

Next, the control unit 9 causes the OSD display processing unit 6 to OSD display a storage time for storing the data of the program reserved for recording together with information related to the recording reservation of the program, and accepts the storage time (step S4). In the initial state, the control unit 9 performs OSD display using 7 days as the storage time.
Specifically, when the signal of the cross key 17c is received, particularly when the up / down key signal is received, the control unit 9 increases or decreases the storage time and displays the changed storage time in the OSD display. The storage time can be arbitrarily changed up to an infinite time.

  And the control part 9 determines whether the signal of the cancel button 17e was received (step S5). When it determines with having received the signal of the cancel button 17e (step S5: YES), the control part 9 complete | finishes a process.

  When determining that the signal of the cancel button 17e has not been received (step S5: NO), the control unit 9 determines whether or not the signal of the determination button 17d has been received (step S6).

  When it determines with having received the signal of the decision button 17d (step S6: YES), the control part 9 memorize | stores a title name, a channel, a recording start date and time, a recording end date and time, and the set preservation | save time (step S7). The process is terminated. Further, the control unit 9 sets the recording start date and time and the recording end date and time in the clock unit 11.

  When it determines with not having received the signal of the decision button 17d (step S6: NO), the control part 9 returns a process to step S4.

  FIG. 5 is a flowchart showing a processing procedure of the control unit 9 relating to program data recording.

  When the recording start signal is received from the clock unit 11 that has recorded the recording start date and time, the control unit 9 causes the recording and reproduction unit 14 to record the program recording start date and time, the program title name, and the channel in the recording and reproduction unit 14 ( Step S11).

  In addition, the control unit 9 causes the recording / playback unit 14 to record the storage time corresponding to the program to be recorded (step S12). The storage time is the storage time accepted when recording a program.

  Next, the control unit 9 gives a control signal for instructing selection of a channel of the reserved program to the digital tuner 1 and the selection unit 12, and causes the digital tuner 1 to acquire data of the selected program (step S13).

  Then, the control unit 9 causes the recording / playback unit 14 to record the data of the program that has been acquired and processed in various types of data (step S14).

Next, the control unit 9 determines whether or not a recording end signal given from the clock unit 11 has been received (step S15).
If it is determined that the recording end signal has been received (step S15: YES), the control unit 9 stops the data recording by the recording / reproducing unit 14 (step S16) and ends the process.

  When it determines with not having received the signal of the completion | finish of recording (step S15: NO), the control part 9 returns a process to step S13.

FIG. 6 is a flowchart showing a processing procedure of the control unit 9 related to program data erasure.
The control unit 9 acquires the date and time that the clock unit 11 is timing (step S21).

  Next, the control unit 9 causes the recording / playback unit 14 to read the recording date and time and the storage time of the data recorded on the hard disk 15 (step S22).

  Then, the control unit 9 determines whether or not the storage time has elapsed from the data recording date and time based on the date and time that the clock unit 11 measures, the data recording date and time, and the data storage time ( Step S23).

  When it is determined that the storage time has elapsed (step S23: YES), the control unit 9 causes the recording / playback unit 14 to erase the data whose storage time has elapsed from the hard disk 15 (step S24).

  When it determines with the preservation | save time not having passed (step S23: NO), the control part 9 complete | finishes a process.

  The control unit 9 periodically executes the processes in steps S21 to S24 described above.

  FIG. 7 is a flowchart illustrating a processing procedure of the control unit 9 according to the change of the storage time. When the control unit 9 receives the signal of the storage time setting button 17f, the control unit 9 displays the title name, channel, recording start date / time, recording end date / time and storage time of the data recorded on the hard disk 15 as a recording / reproducing unit. 14 is read (step S31).

  Next, the control unit 9 generates a title list image that displays the title, channel, recording start date / time, recording end date / time, storage time, and the like of the read data, and causes the OSD display processing unit 6 to display the generated image in an OSD manner. (Step S32).

  FIG. 8 is a schematic diagram showing an image of the title list displayed on the OSD. In the title list row, that is, in the horizontal direction, title, channel, recording start date and time, recording end date and time, and storage time items are arranged. In the title list column, that is, in the vertical direction, they are recorded on the hard disk 15. Each data is arranged with the item.

Next, the control unit 9 accepts a change in storage time (step S33). Specifically, the control unit 9 causes the cursor for selecting the storage time to be changed to be OSD-displayed on the title list, and when the cross key 17c signal, particularly the up / down key signal is received, moves the cursor up / down. Move.
When the control unit 9 receives the left / right key signal of the cross key 17c, the control unit 9 increases or decreases the storage time corresponding to the data selected by the cursor.
The user moves the cursor up and down to select one of the data recorded on the hard disk 15, and operates the left and right keys of the cross key 17c to save the data selected by the cursor. You can increase or decrease the time.

Next, the control unit 9 determines whether or not the signal of the cancel button 17e has been received (step S34).
When it determines with having received the signal of the cancel button 17e (step S34: YES), the control part 9 complete | finishes a process.
If it is determined that the signal of the cancel button 17e has not been received (step S34: NO), the control unit 9 determines whether or not the signal of the determination button 17d has been received (step S35).

  When it determines with not having received the signal of the decision button 17d (step S35: NO), the control part 9 returns a process to step S33.

  When it determines with having received the signal of the determination button 17d (step S35: YES), the control part 9 records the changed preservation | save time on the recording / reproducing part 14 (step S36), and complete | finishes a process.

  In the hard disk recorder according to the first embodiment, when data is recorded on the hard disk 15, the storage time of the data is recorded, and when the storage time has elapsed, the data is erased from the hard disk 15. Accordingly, it is possible to increase the free space of the hard disk 15 and secure a free space for recording the reserved program.

  Further, since the user can set a storage time for each program to be recorded, the data can be erased with a different storage time for each data, and the free space of the hard disk 15 can be increased.

  Furthermore, since the storage time of data once recorded on the hard disk 15 can be changed, the storage time can be changed as appropriate to secure the free space of the hard disk 15. For example, when the data scheduled to be recorded in a certain period increases, the free space of the hard disk 15 can be increased more quickly by reducing the storage time, and the free capacity of the hard disk 15 can be secured.

  In the first embodiment, a hard disk is used as a recording medium, but other recording media capable of rewriting data, such as DVD-RW, DVD + RW, DVD-RAM, Blu-ray Disc, Advanced An optical disc or the like may be employed.

  Also, the hard disk recorder using the digital tuner has been described. However, as long as it has a function of receiving broadcast program data, it may be applied to the hard disk recorder in place of another receiving unit such as an analog tuner. .

Further, it may be configured not to include a tuner but to acquire and record data output from a tuner included in an external display device. When the display device includes a digital tuner, the hard disk recorder has the same effect as that of the first embodiment.
Furthermore, the storage time is recorded for the video and audio data, and the data whose storage time has elapsed is erased. It may be configured to record the time and erase the data whose storage time has elapsed.
Furthermore, in the first embodiment, the elapsed storage time is determined based on the time measured by the clock unit, the time when the data was recorded, and the storage time, but the data was recorded. The elapsed time from the time may be counted directly to determine the elapsed storage time.

(Embodiment 2)
The hard disk recorder according to the second embodiment has the same digital tuner 1, demodulator 2, demultiplexer 3, video buffer 4a, audio buffer 4b, video decoder 5a, audio decoder 5b, OSD display processor 6 as in the first embodiment. A control unit 9, a display unit 10, a clock unit 11, a recording / reproducing unit 14, a receiving unit 16, and the like.

  The control unit 9 according to the second embodiment includes a storage unit that stores a table in which a genre to which a program belongs and a storage time are associated with each other, and specifies a data storage time based on the table. Genres include, for example, movies, dramas, news, and the like, and the storage unit stores 30 days, 14 days, and 1 day of storage time for movies, dramas, and news as initial values, respectively (FIG. 11).

FIG. 9 is a flowchart illustrating a processing procedure of the control unit 9 according to data recording in the second embodiment.
Similarly to the first embodiment, when the control unit 9 according to the second embodiment receives a recording start signal from the clock unit 11 that measures the recording start date and time, the control unit 9 records the program recording start date and time, Are recorded on the recording / reproducing unit 14 (step S41).

  Next, the control unit 9 acquires data to be recorded, that is, determination data indicating the genre to which the program belongs, from the program arrangement information given by the demultiplexer 3 (step S42), and records the acquired determination data in the recording / reproducing unit 14. (Step S43).

  Next, the control unit 9 executes the processes of Steps S44, 45, 46, and 47 similar to the processes of Steps S13, 14, 15, and 16 relating to data recording and stopping shown in FIG.

FIG. 10 is a flowchart illustrating a processing procedure of the control unit 9 according to the change of the storage time in the second embodiment.
When the control unit 9 receives the signal of the storage time setting button 17f, the control unit 9 causes the OSD display processing unit 6 to display an acceptance screen for accepting a change in the storage time (step S51).

  FIG. 11 is a schematic diagram illustrating an example of a reception screen for receiving a change in storage time. The reception screen is composed of a list of genres such as movies, dramas, and news, and storage times corresponding to the genres.

Next, the control unit 9 accepts a change in storage time for each genre (step S52).
Specifically, the control unit 9 causes the OSD display processing unit 6 to perform OSD display of a cursor for selecting a storage time corresponding to each genre. When the up / down key signal of the cross key 17c is received, the control unit 9 moves the cursor up and down. Further, when the left / right key signal of the cross key 17c is received, the control unit 9 increases or decreases the storage time corresponding to the genre selected by the cursor.
The user selects one of the genres by moving the cursor with the cross key 17c, and operates the left and right keys of the cross key 17c to increase or decrease the storage time of the genre selected by the cursor. be able to.

  Next, the control unit 9 determines whether or not the signal of the cancel button 17e has been received (step S53).

  When it determines with having received the signal of the cancel button 17e (step S53: YES), the control part 9 complete | finishes a process.

  When determining that the signal of the cancel button 17e has not been received (step S53: NO), the control unit 9 determines whether or not the signal of the determination button 17d has been received (step S54).

When it determines with having received the signal of the determination button 17d (step S54: YES), the control part 9 memorize | stores the table by which the preservation | save time was changed (step S55).
When it determines with not having received the signal of the decision button 17d (step S54: NO), the control part 9 returns a process to step S51.

  FIG. 12 is a flowchart showing a processing procedure of the control unit 9 related to erasure of program data in the second embodiment.

The control unit 9 acquires the date and time that the clock unit 11 is timing (step S61).
Then, the control unit 9 causes the recording / reproducing unit 14 to read the recording date and time of the data recorded on the hard disk 15 and the discrimination data of the data (step S62).

Next, the control unit 9 specifies the storage time based on the determination data and the table (step S63).
For example, in the case where a table as shown in FIG. 11 is stored, the control unit 9 specifies the storage time of 30 days when it is determined from the data determination data that the genre of the data is drama.

  Next, the control unit 9 determines whether or not it is three days before the storage time elapses from the data recording date and time based on the recording date and time of the read data, the specified storage time, and the date and time counted by the clock unit 11. Is determined (step S64).

  When it determines with it not being 3 days before storage time progress (step S64: NO), the control part 9 complete | finishes a process.

  If it is determined that it is three days before the storage time has elapsed (step S64: YES), the control unit 9 causes the display unit 10 to display a warning that data will be deleted (step S65).

  When the process of step S65 is completed, the control unit 9 determines whether or not the storage time has elapsed from the data recording date and time (step S66).

  When it determines with the preservation | save time not having passed (step S66: NO), the control part 9 complete | finishes a process.

  When it is determined that the storage time has elapsed (step S66: YES), the control unit 9 causes the recording / reproducing unit 14 to erase the data recorded on the hard disk 15 (step S67).

  Next, the control unit 9 causes the recording / playback unit 14 to record the title name of the erased data (step S68).

  The control unit 9 periodically executes the processes in steps S61 to S68 described above.

  On the other hand, when a button (not shown) for displaying the erased title is operated, the control unit 9 performs OSD display of the title list of the erased data on the OSD display processing unit 6 based on the data recorded in step S68. Execute the process.

  The other configurations, operations, and effects of the hard disk recorder according to the second embodiment are the same as the configurations, operations, and effects of the hard disk recorder according to the first embodiment. Detailed description thereof is omitted.

In the hard disk recorder according to the second embodiment, data can be deleted from the hard disk 15 based on the storage time that differs for each genre to which the program belongs, and the free space of the hard disk 15 can be secured.
For example, the storage time of drama data broadcast every week is set shorter than the storage time of movie data, and the storage time of news data is set shorter than the storage time of drama, depending on the genre. Therefore, it is possible to preferentially erase the data whose usage period has expired to secure the free space of the hard disk 15.

  Further, since the user can appropriately change the storage time corresponding to each genre, the storage time desired by the user can be set for each genre.

  Furthermore, since a warning that the data is erased is displayed on the display unit 3 days before the data is erased, it is possible to prevent the data from being accidentally erased.

  Further, when the data is erased, the title of the program of the erased data is recorded on the hard disk 15, so that the user can confirm the data erased from the hard disk 15.

(Embodiment 3)
The hard disk recorder according to the third embodiment has the same digital tuner 1, demodulator 2, demultiplexer 3, video buffer 4a, audio buffer 4b, video decoder 5a, audio decoder 5b, and OSD display processor 6 as in the first embodiment. A control unit 9, a display unit 10, a clock unit 11, a recording / reproducing unit 14, a receiving unit 16, and the like.
The hard disk recorder according to the third embodiment changes the data storage time according to the number of times the program data recorded on the hard disk 15 is reproduced and the free space of the hard disk 15.

FIG. 13 is a flowchart illustrating a processing procedure of the control unit 9 according to data recording in the third embodiment.
The control unit 9 according to the third embodiment causes the recording / reproducing unit 14 to record the recording start date / time of the program, the title name of the program, and the channel when receiving a recording start signal from the clock unit 11 that measures the recording start date / time. (Step S71).

  Next, the control unit 9 causes the recording / reproduction unit 14 to record data indicating that the number of reproductions is 0 (step S72).

  Next, the control unit 9 performs the processing in steps S73, 74, 75, 76, and 77 similar to the processing in steps S12, 13, 14, 15, and 16 related to the storage time and data recording and recording stop shown in FIG. Execute.

  FIG. 14 is a flowchart illustrating a processing procedure of the control unit 9 related to data reproduction in the third embodiment.

  When the signal of the playback button 17h is received, the control unit 9 acquires the date and time that the clock unit 11 is timing (step S81).

  Then, the control unit 9 causes the recording / playback unit 14 to read the recording date and time and the storage time of the data recorded on the hard disk 15 (step S82).

  Next, the control unit 9 determines whether or not it is three days before the storage time elapses from the data recording date and time based on the date and time that the clock unit 11 measures, the data recording date and time, and the data storage time. Determination is made (step S83).

  When it is determined that it is three days before the storage time has elapsed (step S83: YES), the control unit 9 causes the OSD display processing unit 6 to display an OSD display image that warns that data is to be deleted (step S84).

  When the process of step S84 is completed, or when it is determined that it is not three days before the storage time has elapsed (step S83: NO), the control unit 9 causes the recording / reproducing unit 14 to read data (step S85).

  Then, the control unit 9 decodes the read data by the video decoder 5a and the audio decoder 5b (step S86), and outputs the DA-converted video signal and audio signal to the outside (step S87).

  Next, the control unit 9 determines whether or not the signal of the stop button 17i has been received (step S88).

  When it is determined that the signal of the stop button 17i has been received (step S88: YES), the control unit 9 adds 1 to the data value indicating the number of reproductions and causes the recording / reproduction unit 14 to record the data (step S89). And the control part 9 stops reproduction | regeneration of the data by the recording / reproducing part 14 (step S90), and complete | finishes a process.

  When it determines with not having received the signal of the completion | finish of recording (step S88: NO), the control part 9 returns a process to step S85.

  FIG. 15 is a flowchart illustrating a processing procedure of the control unit 9 according to the change of the storage time in the third embodiment.

  The control unit 9 causes the recording / playback unit 14 to read the recording date and time and the storage time of the data recorded on the hard disk 15 (step S91).

  Next, the control unit 9 causes the recording / playback unit 14 to read management information for managing data recorded on the hard disk 15, acquires the free capacity and the total capacity of the hard disk 15 from the management information, and It is determined whether the free capacity is 10% or more of the total capacity (step S92).

  If it is determined that the free space is 10% or more (step S92: YES), the control unit 9 ends the process.

  When it is determined that the free space is less than 10% (step S92: NO), the control unit 9 causes the recording / reproducing unit 14 to read data indicating the number of times of reproduction of each data recorded on the hard disk 15, Based on the read data, it is determined whether or not there is data recorded in the hard disk 15 that has been reproduced one or more times (step S93).

  When it is determined that there is data with the number of reproductions of one or more (step S93: YES), the control unit 9 reduces the storage time of the data with the number of reproductions of one or more, for example, reduces the storage time by half (step S93). S94), the process is finished. The storage time after the shortening is recorded by the recording / reproducing unit 14.

  When it is determined that there is no data whose number of reproductions is one or more (step S93: NO), the control unit 9 ends the process.

  The control unit 9 periodically executes the processes in steps S91 to S94 described above.

  The other configurations, operations, and effects of the hard disk recorder according to the third embodiment are the same as the configurations, operations, and effects of the hard disk recorder according to the first embodiment. Detailed description thereof is omitted.

  In the third embodiment, the lifetime of data that has been reproduced at least once is shortened by reducing the storage time of data in which the free space of the hard disk 15 is less than 10% of the total capacity and the number of reproductions is one or more. , The data can be erased from the hard disk 15, and the free space of the hard disk 15 can be increased.

(Embodiment 4)
The hard disk recorder according to the fourth embodiment has the same digital tuner 1, demodulator 2, demultiplexer 3, video buffer 4a, audio buffer 4b, video decoder 5a, audio decoder 5b, OSD display processing unit 6 as in the first embodiment. A control unit 9, a display unit 10, a clock unit 11, a recording / reproducing unit 14, a receiving unit 16, and the like.
The hard disk recorder according to the fourth embodiment records the received program data under a predetermined directory having a hierarchical structure, moves the program data whose storage time has elapsed to the temporarily deleted directory, and frees up the hard disk 15 When the capacity becomes less than the predetermined capacity, the data under the temporary erased directory is erased.

FIG. 16 is a flowchart illustrating a processing procedure of the control unit 9 related to erasure of program data in the fourth embodiment.
The control unit 9 acquires the date and time that the clock unit 11 is timing (step S101). Then, the control unit 9 causes the recording / playback unit 14 to read the recording date and time and the storage time of the data recorded on the hard disk 15 (step S102). Next, the control unit 9 determines whether or not the storage time has elapsed from the recording date and time (step S103).

When it is determined that the storage time has elapsed (step S103: YES), the control unit 9 temporarily erases the data for which the storage time has elapsed (step S104).
That is, management information for recording and managing data under a directory having a hierarchical structure is recorded on the hard disk 15, and the control unit 9 is under a temporarily erased folder for managing data whose storage time has elapsed. Then, the management information is changed so as to record and manage data whose storage time has elapsed. That is, the recording / reproducing unit 14 moves the data recorded under a predetermined directory to the temporarily deleted directory.

  When the process of step S104 is completed, or when it is determined in step S103 that the storage time has not elapsed (step S103: NO), the control unit 9 has 10% or more of the free capacity of the hard disk 15 as the total capacity. Whether or not (step S105).

  When it is determined that the free space of the hard disk 15 is 10% or more (step S105: YES), the control unit 9 ends the process.

  When it is determined that the free space of the hard disk 15 is less than 10% (step S105: NO), the control unit 9 causes the recording / playback unit 14 to erase the temporarily erased data, that is, the data under the temporarily erased folder. (Step S106), the process ends.

  The control unit 9 periodically executes the processes in steps S101 to S106 described above.

FIG. 17 is a flowchart showing a processing procedure of the control unit 9 related to recovery of temporarily erased data in the fourth embodiment.
When a list display button (not shown) for displaying a list of provisionally erased data is operated, the control unit 9 performs the provisionally erased data, that is, the provisionally erased folder based on the management information recorded on the hard disk 15. A list of title names of data recorded below is displayed on the OSD display processing unit 6 by OSD (step S111).
That is, the control unit 9 identifies the title names of the data under the temporarily deleted folder based on the management information, and generates a list image in which the identified title names are arranged in the vertical direction. Then, the generated list image data is given to the OSD display processing unit 6 to cause the OSD display processing unit 6 to display the list image in OSD.

Next, the control unit 9 accepts recovery of temporarily erased data (step S112).
That is, the control unit 9 causes the OSD display processing unit 6 to display an OSD display of a cursor for selecting data to be recovered, and moves the cursor up and down when a signal from the up / down key of the cross key 17c is received.

Next, the control unit 9 determines whether or not the signal of the determination button 17d has been received (step S113).
When it determines with having received the signal of the decision button 17d (step S113: YES), the control part 9 sets the preservation | save time of the data selected with the cursor to the date and time after the time which the timepiece part 11 has timed. The data is recovered by extending and changing the management information to the recording / reproducing unit 14 so that the data is managed under a predetermined folder (step S114).
That is, the recording / reproducing unit 14 moves the data under the temporarily deleted folder to a predetermined folder.

  When the process of step S114 is completed or when it is determined that the signal of the determination button 17d is not received (step S113: NO), the control unit 9 determines whether or not the signal of the cancel button 17e is received. (Step S115).

When it determines with having received the signal of the cancel button 17e (step S115: YES), the control part 9 complete | finishes a process.
When it determines with not having received the signal of the cancel button 17e (step S115: NO), the control part 9 returns a process to step S111.

  The other configurations, operations, and effects of the hard disk recorder according to the fourth embodiment are the same as the configurations, operations, and effects of the hard disk recorder according to the first embodiment. Detailed description thereof is omitted.

  In the fourth embodiment, data whose storage time has elapsed is moved to the temporarily deleted folder, and when the free space of the hard disk 15 becomes less than 10% of the total capacity, the data under the temporarily deleted folder is deleted. By configuring so, the possibility that the data required by the user will be erased can be reduced.

1 is a hard disk recorder according to Embodiment 1 of the present invention. It is a block diagram of a remote control device. It is a flowchart which shows the process sequence of the control part which concerns on reception of preservation | save time. It is a schematic diagram of an image displayed OSD when a program is reserved. It is a flowchart which shows the process sequence of the control part which concerns on the data recording of a program. It is a flowchart which shows the process sequence of the control part which concerns on the data deletion of a program. It is a flowchart which shows the process sequence of the control part which concerns on the change of a preservation | save time. It is a schematic diagram which shows the image of the title list displayed by OSD. 11 is a flowchart illustrating a processing procedure of a control unit according to data recording in the second embodiment. 10 is a flowchart illustrating a processing procedure of a control unit according to a change in storage time in the second embodiment. It is a schematic diagram which shows an example of the reception screen for receiving the change of a preservation | save time. 10 is a flowchart illustrating a processing procedure of a control unit related to data erasure of a program in the second embodiment. 10 is a flowchart illustrating a processing procedure of a control unit according to data recording in the third embodiment. 14 is a flowchart illustrating a processing procedure of a control unit related to data reproduction in the third embodiment. 12 is a flowchart illustrating a processing procedure of a control unit according to a change in storage time in the third embodiment. 10 is a flowchart illustrating a processing procedure of a control unit related to data erasure of a program in the fourth embodiment. 14 is a flowchart illustrating a processing procedure of a control unit related to recovery of temporarily erased data in the fourth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Digital tuner 2 Demodulator 3 Demultiplexer 4a Video buffer 4b Audio buffer 5a Video decoder 5b Audio decoder 5c EPG decoder 6 OSD display processing unit 7a Video signal output unit 7b Audio signal output unit 8 STC
DESCRIPTION OF SYMBOLS 9 Control part 10 Display part 11 Clock part 12 Selection part 13 Buffer memory 14 Recording / reproducing part 15 Hard disk 16 Receiving part 17 Remote control device 17a Transmission part 17b Program guide button 17c Cross key 17d Decision button 17e Cancel button 17f Save time setting button 17g Title display button 17h Play button 17i Stop button

Claims (10)

In a recording apparatus for recording received data on a recording medium,
A storage time recording means for recording a storage time for storing data;
Clocking means for clocking an elapsed time since the data was recorded on the recording medium;
A recording apparatus comprising: an erasing unit for erasing the data when the elapsed time measured by the timing unit exceeds the storage time recorded by the storage time recording unit. The storage time recording means includes
The recording apparatus according to claim 1, wherein the storage time of the data is recorded in association with the data. A storage time receiving means for receiving data storage time is provided,
The storage time recording means includes
The recording apparatus according to claim 1, further comprising a unit that records the storage time received by the storage time reception unit. Receiving means for receiving discrimination data for discriminating the type of broadcast data;
A table that associates data types and storage times;
A specifying means for specifying a data storage time based on the table and the discrimination data received by the receiving means;
The erasing means includes
4. The apparatus according to claim 1, further comprising a unit that erases the data when the elapsed time measured by the time measuring unit exceeds the storage time specified by the specifying unit. 5. Recording device. A determination means for determining whether or not a predetermined time before the storage time elapses from when the data is recorded on the recording medium, based on the time measurement result and the storage time of the time measuring means;
The recording apparatus according to claim 1, further comprising: a warning unit that warns that data is erased when the determination unit determines that the predetermined time has passed. . The recording apparatus according to claim 1, further comprising: a unit that records information for specifying the erased data when the erasing unit erases the data. The recording apparatus according to claim 1, further comprising a changing unit that changes the recorded storage time. Reproducing means for reproducing data recorded on the recording medium;
Replay count recording means for recording the number of replays by the replay means for each replayed data,
The changing means is
The recording apparatus according to claim 7, further comprising a unit that changes a storage time according to the number of reproductions recorded by the reproduction number recording unit. Capacity determining means for determining whether or not the free capacity of the recording medium is equal to or greater than a predetermined capacity;
The changing means is
The recording apparatus according to claim 7, further comprising a unit that shortens a recorded storage time when the capacity determination unit determines NO. Means for recording received data under one directory having a hierarchical structure;
Capacity determining means for determining whether or not the free capacity of the recording medium is equal to or greater than a predetermined capacity;
A means for moving the data from the one directory to another directory having a hierarchical structure when the elapsed time measured by the time measuring means exceeds a data storage time; and
The erasing means includes
The data under the other directory is deleted when the elapsed time measured by the time measuring unit exceeds the storage time and the capacity determining unit determines NO. The recording apparatus according to any one of 8.

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