JP5121772B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus that records content data on a recording medium.

Currently, recording devices (recording devices) for recording programs broadcast by TV (television) broadcasting are widespread.
A user of the recording apparatus attaches a recording disk such as a DVD (Digital Versatile Disc) or a BD (Blu-ray Disc) to the recording apparatus. Furthermore, the user operates the recording device to reserve recording of a desired program.
The recording device records the content data of the program reserved for recording on the recording disk (reserved recording).

However, when the recordable capacity of the recording disk is small, there is a possibility that the entire content data of the program reserved for recording cannot be recorded.
In order to eliminate such inconvenience, there has been proposed an image recording apparatus that detects the recordable capacity of a recording disk and changes the compression rate of content data in accordance with the detected recordable capacity (Patent Document). 1).
In the image recording apparatus described in Patent Document 1, the compression rate of content data increases as the recordable capacity of the recording disk decreases. For this reason, it is suppressed that the recordable capacity of the recording disk is insufficient and recording of content data fails.

JP 2008-35051 A

  When the image recording apparatus described in Patent Document 1 is used, the compression rate of content data may be partially changed. For this reason, for example, when content data having a low compression ratio in the first half and a high compression ratio in the second half is reproduced, the image of the displayed program has a higher image quality at the beginning and a lower image quality at the end. As a result, viewers who watch the program that has been reserved and recorded may feel uncomfortable.

  The present invention has been made in view of such circumstances, and its main object is to record content data on a recording medium at a compression rate corresponding to the recordable capacity of the recording medium. An object of the present invention is to provide a recording apparatus capable of making the quality of content to be reproduced uniform while suppressing the recording of content data from failing due to insufficient recordable capacity.

The recording apparatus according to the present invention is a recording apparatus that records content data on a detachable recording medium, a storage unit that stores content data, and the storage before storing the content data to be recorded on the recording medium. Data storage control means for storing in the storage section, storage amount detection means for detecting the data amount of the content data stored in the storage section, capacity detection means for detecting the recordable capacity of the recording medium, and the capacity detection Storage compression calculation means for calculating the compression rate of the content data to be recorded on the recording medium based on the detection result of the means and the detection result of the storage amount detection means; and the content data stored in the storage unit , a compression recording means for recording on the recording medium at a compression rate of the storage compression operation means has operation content data to the recording medium Correspondence determining means for determining whether or not the content data recorded on the recording medium and the content data stored in the storage section correspond to each other when recording is completed, and the correspondence determining means A storage deletion unit that deletes the content data stored in the storage unit when it is determined that the storage unit is compatible; the correspondence determination unit includes a frame of content data recorded on the recording medium; The degree of coincidence is calculated by comparing with the frame of the content data accumulated in the accumulation unit, and when the calculated degree of coincidence is equal to or greater than the predetermined coincidence, it is determined that it corresponds, and is less than the predetermined coincidence If features a Citea Rukoto to determine that does not correspond.

The recording apparatus according to the present invention is a recording apparatus for recording content data on a detachable recording medium, a storage unit for storing the content data, a data amount calculating means for calculating a data amount of the content data to be recorded, Based on the capacity detection means for detecting the recordable capacity of the recording medium, the detection result of the capacity detection means, and the calculation result of the data amount calculation means, the compression rate of the content data to be recorded on the recording medium is calculated. Data compression calculation means, compression / accumulation control means for storing content data to be recorded in the storage section at a compression rate calculated by the data compression calculation means before recording on the recording medium, and storage in the storage section the content data being the data recording means for recording on a recording medium, the recording of the content data to the recording medium final In this case, correspondence determination means for determining whether or not the content data recorded on the recording medium and the content data stored in the storage unit correspond to each other, and the correspondence determination means correspond to each other. Storage unit for deleting content data stored in the storage unit when the storage unit determines that the content data stored in the storage unit, the correspondence determination unit includes a frame of content data recorded on the recording medium, and the storage unit Compare the content data frames stored in the file to calculate the degree of coincidence. If the calculated degree of coincidence is equal to or higher than the predetermined degree of coincidence, it is determined to be compatible. and wherein the Citea Rukoto to determine and to not.

  The recording apparatus according to the present invention is characterized in that the data amount calculation means calculates the data amount using EPG (Electronic Program Guide) data.

  The recording apparatus according to the present invention is characterized in that the content data is data representing the contents of a broadcast program.

In the present invention, the storage unit is handled like a buffer memory when recording content data on a recording medium. For this purpose, the recording apparatus of the present invention further includes data storage control means, storage amount detection means, capacity detection means, storage compression calculation means, and compression recording means.
The data storage control means stores the content data to be recorded in the storage unit before recording it on the recording medium.
The accumulation amount detection means detects the data amount of the content data accumulated in the accumulation unit.
The capacity detection unit detects the recordable capacity of the recording medium.

If the recordable capacity detected by the capacity detection means is greater than or equal to the detection result of the storage amount detection means, the content data recording fails even if the content data stored in the storage section is recorded on the recording medium as it is. There is nothing.
However, when the recordable capacity detected by the capacity detection unit is less than the detection result of the accumulation amount detection unit, if the content data stored in the storage unit is recorded on the recording medium as it is, the recordable capacity of the recording disk is increased. Insufficient recording of content data.

Therefore, the storage compression calculation means calculates the compression rate of the content data to be recorded on the recording medium based on the detection result of the capacity detection means and the detection result of the storage amount detection means. Here, the calculated compression rate is a compression rate that does not cause a shortage of the recordable capacity of the recording disk.
The compression recording unit records the content data stored in the storage unit on the recording medium at the compression rate calculated by the storage compression calculation unit.

In the present invention, the storage unit is handled like a buffer memory when recording content data on a recording medium. For this purpose, the recording apparatus of the present invention further comprises data amount calculation means, capacity detection means, data compression calculation means, compression / accumulation control means, and data recording means.
The data amount calculating means calculates the data amount of the content data to be recorded.
The capacity detection unit detects the recordable capacity of the recording medium.

When the recordable capacity detected by the capacity detection means is equal to or greater than the calculation result of the data amount calculation means, the content data recording will not fail even if the content data to be recorded is recorded on the recording medium as it is.
However, if the recordable capacity detected by the capacity detection means is less than the calculation result of the data amount calculation means, if the content data to be recorded is recorded on the recording medium as it is, the recordable capacity of the recording disk becomes insufficient. Data recording fails.

Therefore, the data compression calculation means calculates the compression rate of the content data to be recorded on the recording medium based on the detection result of the capacity detection means and the calculation result of the data amount calculation means. Here, the calculated compression rate is a compression rate that does not cause a shortage of the recordable capacity of the recording disk.
The compression / accumulation control means accumulates the content data to be recorded in the accumulation unit at the compression rate calculated by the data compression calculation means before recording it on the recording medium.
The data recording means records the content data stored in the storage unit on a recording medium.

In the present invention, the data amount calculation means calculates the data amount of the content data to be recorded using the EPG data.
At the time when the data amount calculation means calculates the data amount, the recording device may not yet obtain the content data. For this reason, the data amount calculation means needs to calculate the estimated data amount.
The EPG data can be obtained before the content data is obtained. For this reason, the amount of content data to be recorded can be estimated by using EPG data.

The present invention further includes correspondence determination means and accumulation / deletion means.
From the viewpoint of copyright protection, in order to suppress unlimited copying of content data, it is necessary to delete the content data stored in the storage unit at an appropriate timing. However, when recording on the recording medium fails for some reason, it is difficult to restore the already deleted content data and record it again on the recording medium.

Therefore, the correspondence determining means compares the content data recorded on the recording medium with the content data stored in the storage unit when the recording of the content data on the recording medium is completed, and the two correspond to each other. It is determined whether or not.
The case where the content data recorded on the recording medium corresponds to the content data stored in the storage unit is a case where the recording on the recording medium is successful. On the other hand, the case where it does not correspond is a case where recording on the recording medium has failed.
That is, the correspondence determination unit confirms whether or not the recording to the recording medium is successful after the content data is recorded on the recording medium and before the content data stored in the storage unit is deleted.

When it is determined that the correspondence determination unit is compatible, the storage deletion unit deletes the content data stored in the storage unit. That is, when the recording on the recording medium is successful, the content data stored in the storage unit is deleted.
As a result, it is possible to suppress unlimited copying of content data, and to suppress the disadvantage that content data stored in the storage unit is unnecessarily deleted when recording on a recording medium fails. Both can be achieved.

  In the present invention, data representing the contents of a broadcast program is recorded on the recording medium as the content data. For this reason, the recording device can record video and audio of the broadcast program.

In the case of the recording apparatus of the present invention, content data to be recorded can be recorded in the recording medium at a constant compression rate corresponding to the recordable capacity of the recording medium after accumulating in the storage unit. Alternatively, according to the recording apparatus of the present invention, the content data to be recorded can be recorded in the storage medium after being stored in the storage unit at a certain compression rate according to the recordable capacity of the recording medium.
Therefore, it is possible to make the quality of reproduced content (image quality, sound quality, etc.) uniform while suppressing the recordable capacity of the recording disk from being insufficient and failing to record content data.

It is a conceptual diagram which shows the external appearance of the video recording apparatus which is a recording device which concerns on Embodiment 1 of this invention. It is a block diagram which shows the principal part structure of the video recording apparatus which is a recording device which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the recording disc confirmation process performed with the video recording apparatus which is a recording device which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the scheduled video recording process performed with the video recording apparatus which is a recording device which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the scheduled video recording process performed with the video recording apparatus which is a recording device which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the scheduled video recording process performed with the video recording apparatus which is a recording device which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the reservation video recording process performed with the video recording apparatus which is a recording device which concerns on Embodiment 2 of this invention. It is a flowchart which shows the procedure of the reservation video recording process performed with the video recording apparatus which is a recording device which concerns on Embodiment 2 of this invention. It is a flowchart which shows the procedure of the reservation video recording process performed with the video recording apparatus which is a recording device which concerns on Embodiment 2 of this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.

Embodiment 1.
In the present embodiment, a program broadcast by TV broadcasting is exemplified as the content.
FIG. 1 is a conceptual diagram showing an external appearance of a recording apparatus 1 that is a recording apparatus according to Embodiment 1 of the present invention. FIG. 2 is a block diagram showing a main configuration of the recording device 1.
As shown in FIG. 1, a TV receiver 4 is connected to the recording apparatus 1. The recording device 1 transmits a video signal and an audio signal to the TV receiver 4. The TV receiver 4 displays a video based on the received video signal and outputs a sound based on the audio signal. The video displayed by the TV receiver 4 and the audio to be output are video and audio of a program broadcast by TV broadcasting.

  A remote controller (remote controller) 5 is a device for remotely operating the recording device 1 by the Bluetooth (registered trademark) system. For example, the user operates the remote controller 5 when selecting a channel on which a desired program is broadcast. For this purpose, the remote controller 5 is provided with various operation buttons pressed by the user of the recording apparatus 1. The remote controller 5 transmits an operation signal corresponding to the pressed operation button. The remote controller 5 may be a remote control device such as an infrared method or an RF method.

As shown in FIG. 2, the recording device 1 includes a broadcast input unit 11, a signal input unit 12, a signal output unit 13, a reception unit 14, a display unit 15, a hybrid drive device 2, and a back end unit 3. .
The hybrid drive device 2 records content data representing the contents of the broadcast program on a removable recording disk D. For this purpose, the hybrid drive device 2 includes a control unit 20, a recording unit 21, a storage unit 22, and an interface unit 23. These are connected to each other via a system bus 2b in the hybrid drive device 2.

  The back end unit 3 generates content data of a broadcast program. For this purpose, the back end unit 3 includes a CPU 30, a digital tuner 31, an encoder 32, a stream processing unit 33, a volatile memory 34, a decoder 35, a video processing unit 36, a non-volatile memory 37, and an interface unit 38. The CPU 30, the stream processing unit 33, the volatile memory 34, the decoder 35, the nonvolatile memory 37, and the interface unit 38 are connected to each other via the system bus 3 b in the back end unit 3. Each of the digital tuner 31 and the encoder 32 is connected to the stream processing unit 33. The decoder 35 is connected to the video processing unit 36, and the video processing unit 36 is connected to the signal output unit 13 outside the back end unit 3.

The hybrid drive device 2 and the back end unit 3 are connected via an interface unit 23 and an interface unit 38. Each of the interface unit 23 and the interface unit 38 is, for example, an interface unit conforming to a serial ATA (Advanced Technology Attachment) standard.
The CPU 30 of the back end unit 3, the receiving unit 14, and the display unit 15 are connected to each other via the system bus 1b.
The broadcast input unit 11 is connected to the digital tuner 31 of the back end unit 3, and the signal input unit 12 is connected to the encoder 32 of the back end unit 3.

The broadcast input unit 11 is connected to an external antenna or the like (not shown). A broadcast signal obtained by demodulating a broadcast wave of a digital broadcast is input to the broadcast input unit 11. The broadcast input unit 11 outputs the input digital broadcast broadcast signal to the digital tuner 31.
The signal input unit 12 is connected to an external tuner (not shown). A broadcast signal obtained by demodulating an analog broadcast wave is input to the signal input unit 12. The signal input unit 12 outputs the input analog broadcast broadcast signal to the encoder 32.

A digital tuner 31 to which a broadcast signal of a digital broadcast is input from the broadcast input unit 11 converts a broadcast signal of a selected channel, that is, a broadcast signal of a specific frequency band among the input broadcast signals, into an MPEG (Moving Picture Experts). Group) -2TS (Transport Stream) or other digital stream data. Next, the digital tuner 31 outputs the stream data to the stream processing unit 33.
The encoder 32 to which an analog broadcast signal is input from the signal input unit 12 encodes the input broadcast signal into digital stream data such as MPEG-2PS (Program Stream) or MPEG-2TS. Next, the encoder 32 outputs the stream data to the stream processing unit 33.

  Note that the recording device 1 may further include a digital interface such as Ethernet (registered trademark) that receives stream data from an external device such as a tuner device. This digital interface is connected to the stream processing unit 33 and outputs the received stream data to the stream processing unit 33.

  The stream processing unit 33 performs predetermined data processing on the stream data input from the digital tuner 31 and / or the encoder 32. This data processing is, for example, processing for releasing scramble for digital broadcasting. Hereinafter, the stream data that has been subjected to predetermined data processing by the stream processing unit 33 is referred to as content data. The content data generated by the stream processing unit 33 represents the content of the program broadcast on the channel selected by the user by operating the remote controller 5, and the program can be reproduced by being decoded by the decoder 35. It will be.

When viewing a program, the content data generated by the stream processing unit 33 is input to the decoder 35.
When recording a program, the content data generated by the stream processing unit 33 is directly input to the storage unit 22. Content data generated by the stream processing unit 33 is not directly input to the recording unit 21.
The output of content data from the stream processing unit 33 to the decoder 35 and the output of content data from the stream processing unit 33 to the storage unit 22 may both be executed, or one of them may be executed. Further, the content data input to the decoder 35 and the content data input to the storage unit 22 may be the same or different.

  The output destination of the content data from the stream processing unit 33 is determined by the CPU 30 according to the operation signal transmitted from the remote controller 5. When the user only wants to view the program, the content data is output only to the decoder 35, and when only the recording is desired, the content data is output only to the storage unit 22, and viewing and recording are desired simultaneously. If it is, the data is output to both the decoder 35 and the storage unit 22.

Furthermore, the stream processing unit 33 changes the bit rate of the content data to the bit rate set by the CPU 30. The content data whose bit rate is to be changed is content data output from the storage unit 22 and input to the stream processing unit 33. Here, when the bit rate of content data is low (or high), the compression rate of content data is high (or low). For this reason, the data amount of the content data is small (or large), but the program to be reproduced is low (or high).
The content data whose bit rate has been changed by the stream processing unit 33 is input to the recording unit 21.

  The storage unit 22 uses a mass storage device such as a flash memory or a hard disk. The storage unit 22 stores content data input to itself. Further, the storage unit 22 reads and outputs the content data stored in itself.

The recording unit 21 uses, for example, an optical disc drive. A recording disk D having portability such as a DVD or a BD is detachably mounted inside the recording unit 21. The recording unit 21 records the recording data input to itself on the recording disk D. Such a recording disk D functions as a recording medium in the present invention.
The recording unit 21 reads various types of information such as the type of the recording disk D and the recordable capacity indicating the amount of data that can be recorded on the recording disk D, and outputs the various types of read information to the control unit 20. . Further, the recording unit 21 reads and outputs the content data recorded on the recording disk D.
The content data output from the recording unit 21 is input to the decoder 35.

The decoder 35 decodes the content data into a video signal and an audio signal, and then outputs them to the video processing unit 36.
The video processing unit 36 to which the video signal and the audio signal are input performs video processing such as pixel interpolation or color adjustment on the video signal. Next, the video processing unit 36 outputs the video signal and the audio signal to the signal output unit 13.
The signal output unit 13 outputs the input video signal and audio signal to the TV receiver 4.
When the video signal and audio signal input to the TV receiver 4 are obtained by decoding the content data read from the recording disk D, the recorded program is reproduced on the TV receiver 4.

  The control unit 20 uses a RAM (not shown) as a work area and directly controls the operation of each part of the hybrid drive device 2 according to various information stored in the ROM (not shown). Further, the control unit 20 outputs a control signal indicating an operation state of each unit of the hybrid drive device 2 and information on the recording disk D to the CPU 30.

Each of the volatile memory 34 and the nonvolatile memory 37 is a readable / writable memory.
The CPU 30 uses the volatile memory 34 as a work area, and directly controls the operation of each part of the backend unit 3 according to the computer program and various information stored in the nonvolatile memory 37. Further, the CPU 30 outputs a control signal for controlling the operation of each part of the hybrid drive device 2 to the control unit 20 of the hybrid drive device 2. The control unit 20 controls the operation of each unit of the hybrid drive device 2 in accordance with the control signal input to itself. That is, the CPU 30 indirectly controls the operation of each unit of the hybrid drive device 2.

The display unit 15 uses, for example, a liquid crystal display. The display unit 15 is controlled by the CPU 30 to display an operation status of the recording device 1 and / or a message to the user. For example, when the recording disk D is not attached to the recording unit 21, characters, symbols, etc. (hereinafter referred to as no disk warning) for notifying the user that the recording disk D is not attached are displayed on the display unit 15. Is displayed.
The receiving unit 14 is a Bluetooth standard transceiver. The receiving unit 14 receives the operation signal transmitted from the remote controller 5 and outputs the received operation signal to the CPU 30.
The CPU 30 to which the operation signal is input executes various processes according to the input operation signal.

Incidentally, a recording apparatus as described in Patent Document 1 includes an optical disk drive and a hard disk drive. Hard disk drives operate faster than optical disk drives, and hard disks have more storage capacity than optical disks. For this reason, a general user records a program on a hard disk and then dubbes it on an optical disk. As a result, there is no risk of program recording failure due to the lack of recordable capacity of the optical disc.
However, the user needs to record the program on the hard disk once by operating the recording apparatus, and then dubb the program from the hard disk to the optical disk by further operating the recording apparatus. That is, the operation of the recording apparatus is complicated.

On the other hand, when using a recording device having only an optical disc drive, the user directly records the program on the optical disc by operating the recording device. That is, the operation of the recording apparatus is simple.
However, there is a risk that the recording of the program may fail due to the lack of recordable capacity of the optical disc.

  In order to prevent a recording failure in such a recording apparatus, it is necessary for the user to grasp the recordable capacity of the optical disc and appropriately determine the bit rate of the content data. However, when the program being watched is recorded immediately, there may be no time to check the recordable capacity of the optical disc. Further, it is possible to suppress recording failure by always recording at the minimum bit rate, but in this case, the image quality of the reproduced program is very low.

  Alternatively, a recording device that is recording a program frequently detects the recordable capacity of the optical disc, and gradually reduces the bit rate of the content data recorded on the optical disc according to the detection result. Conceivable. However, such a recording apparatus has a complicated configuration. In addition, since the picture quality of the reproduced program is gradually lowered, the viewer may feel uncomfortable.

The recording apparatus 1 according to the present embodiment includes a recording unit 21 and a storage unit 22. In the recording device 1, the program is once recorded in the storage unit 22 and then dubbed on the recording disk D. At this time, the content data output from the storage unit 22 is recorded on the recording disk D at the bit rate calculated by the CPU 30. However, this bit rate is the maximum and constant bit rate at which all content data can be recorded on the recording disk D.
Therefore, the program recording failure due to the lack of the recordable capacity of the recording disk D is suppressed. Moreover, the picture quality of the reproduced program is uniform and is the highest as long as the recordable capacity permits.

For this purpose, the user may record the program on the recording disk D by operating the recording device 1. At this time, the user does not need to be aware of dubbing from the storage unit 22 to the recording disk D. In addition, there is no problem even if the user does not know the existence of the storage unit 22. That is, the recording device 1 is easy to operate. As a result, the recording apparatus 1 has improved user convenience.
In the present embodiment, the bit rate is exemplified as the content data compression rate, but the present invention is not limited to this.

Hereinafter, a procedure for recording a program in the recording apparatus 1 will be described in more detail.
FIG. 3 is a flowchart showing a procedure of recording disk confirmation processing executed by the CPU 30.
A user who desires to record a program attaches the recording disk D to the recording unit 21.
The control unit 20 constantly monitors the operation of the recording unit 21. When the recording disk D is loaded in the recording unit 21, the control unit 20 outputs a control signal indicating that the recording disk D is loaded to the CPU 30.
The CPU 30 determines whether or not the recording disk D is loaded in the recording unit 21 by determining whether or not a control signal indicating that the recording disk D is loaded is input (S11).

When the recording disk D is not loaded in the recording unit 21 (NO in S11), the CPU 30 repeatedly executes the process of S11. In this case, a warning about no disk is displayed on the display unit 15.
When the recording disk D is loaded in the recording unit 21 (YES in S11), the CPU 30 causes the display unit 15 to delete the no disk warning (S12).

The recording unit 21 loaded with the recording disk D detects the type of the recording disk D by reading the loaded recording disk D, and further detects the recordable capacity of the recording disk D. Such a recording unit 21 functions as a capacity detection unit.
The detection result by the recording unit 21 is given to the control unit 20, and the control unit 20 outputs a control signal indicating the given detection result to the CPU 30.
By the way, when the detection result of the type of the recording disk D indicates that the recording disk D is a type that requires initialization, the control unit 20 controls the recording unit 21 to initialize the recording disk D. Turn into.

After the processing of S12 is completed, the CPU 30 determines whether or not a control signal indicating the detection result of each type of recording disk D and recordable capacity has been input (S13), and if not yet input (NO in S13). , S13 is repeatedly executed.
When the control signal is input (YES in S13), the CPU 30 stores the type of the recording disk D and the recordable capacity indicated in the input control signal in the volatile memory 34 (S14).

A user desiring to take out or replace the recording disk D operates the remote controller 5 or operates a discharge button (not shown) provided in the recording apparatus 1 to eject the recording disk D from the recording unit 21. Let
When the recording disk D is ejected from the recording unit 21, the control unit 20 outputs a control signal indicating that the recording disk D has been ejected to the CPU 30.
For this reason, after the processing of S14 is completed, the CPU 30 determines whether or not the recording disk D is ejected from the recording unit 21 by determining whether or not a control signal indicating that the recording disk D is ejected is input. Determine (S15).
When the recording disk D is not ejected from the recording unit 21 (NO in S15), the CPU 30 repeatedly executes the process of S15.

When the recording disk D is ejected from the recording unit 21 (YES in S15), the CPU 30 displays a no-disk warning on the display unit 15 (S16).
After the process of S16 is completed, the CPU 30 deletes the type and recordable capacity of the recording disk D stored in the volatile memory 34 (S17), and then returns the process to S11.

  For example, when the user wants to record a program being broadcast, the user operates the remote controller 5 to select a channel on which the program is broadcast, and further gives a recording start command to the recording apparatus 1. .

  Receiving the recording start command, the recording apparatus 1 starts recording the selected program. Next, the recording device 1 ends the recording of the program at an appropriate timing. This timing is determined when the user gives a recording end command to the recording apparatus 1 by operating the remote controller 5 or for a predetermined time (30 minutes or 60 minutes, etc.) after the recording apparatus 1 receives the recording start command. It is the time when has passed. Note that the recording apparatus 1 that has obtained EPG data may be configured to end the recording of a program that has been broadcast when the recording start command is received.

Further, when the user wants to record a program scheduled to be broadcast in the future, the user selects a channel on which the program is broadcast by operating the remote controller 5, and further, the recording device 1 is notified of the recording start time and the recording start time. Recording reservation information including the recording end time is given (recording reservation). Note that the EPG may be available at the time of recording reservation.
The recording apparatus 1 that has received the recording reservation information starts recording the program when the recording start time is reached, and ends the recording of the program when the recording end time is reached (reserved recording).

Below, the case where the video recording apparatus 1 performs the reservation video recording of one program is illustrated.
4 to 6 are flowcharts showing the procedure of the reserved recording process executed by the CPU 30. FIG.
As shown in FIG. 4, the CPU 30 determines whether or not a recording reservation has been made by the user based on the operation signal received via the receiving unit 14 (S31), and the recording reservation has not been made. (NO in S31), the process of S31 is repeatedly executed.
When the recording reservation is made (YES in S31), the CPU 30 stores the recording reservation information in the nonvolatile memory 37 (S32).

  After completing the process of S32, the CPU 30 determines whether or not the recording start time has been reached using a clock unit (not shown) (S33). If the recording start time has not been reached (NO in S33), the CPU 30 Repeat the process.

  When the recording start time is reached (YES in S33), the CPU 30 controls the digital tuner 31, for example, to output stream data obtained by converting broadcast signals of channels reserved for recording to the stream processing unit 33. Further, the content data generated by the stream processing unit 33 is output to the hybrid drive device 2 (S34). At this time, the stream processing unit 33 generates content data of a program broadcast on a channel reserved for recording. Further, the stream processing unit 33 does not change the bit rate of the content data.

  Further, the CPU 30 controls the control unit 20 to input the content data output from the stream processing unit 33 to the storage unit 22 (S35). By executing the process of S35, the content data is stored in the storage unit 22 at the bit rate as it is. The CPU 30 in S35 functions as a data accumulation control unit.

Next, the CPU 30 determines whether or not the recording end time has been reached (S36). If the recording end time has not been reached (NO in S36), the process returns to S35 to store the content data for the storage unit 22. Continue input control.
When the recording end time is reached (YES in S36), the CPU 30 ends the content data input control for the storage unit 22 (S37).
After the process of S37 is completed, the CPU 30 deletes the recording reservation information stored in the nonvolatile memory 37 (S38).

Next, as shown in FIG. 5, the CPU 30 detects the amount of content data stored in the storage unit 22 (S41). At this time, the CPU 30 may directly access the storage unit 22 to detect the data amount of the content data, or control the control unit 20 to acquire the data amount detected by the control unit 20. Also good. The CPU 30 in S41 functions as a storage amount detection unit.
In the present embodiment, when content data is stored in the storage unit 22, the bit rate of the content data is not changed to a low bit rate. For this reason, the amount of content data stored in the storage unit 22 is large.

Next, the CPU 30 determines whether or not the recordable capacity of the recording disk D is stored in the volatile memory 34 (S42).
When the recordable capacity of the recording disk D is not stored in the volatile memory 34 (NO in S42), since the recording disk D is not loaded in the recording unit 21, the CPU 30 repeatedly executes the process of S42. That is, in the recording apparatus 1 according to the present embodiment, recording to the program storage unit 22 is executed even if the recording disk D is not attached.

  When the recordable capacity of the recording disk D is stored in the volatile memory 34 (YES in S42), the CPU 30 is based on the data amount detected in S41 and the recordable capacity stored in the volatile memory 34. Then, the bit rate of the content data to be recorded on the recording disk D is calculated (S43). The CPU 30 in S43 functions as a storage compression calculation means.

  After the processing of S43 ends, the CPU 30 sets the bit rate that is the calculation result of S43 in the stream processing unit 33 (S44). Next, the CPU 30 controls the control unit 20 to output content data from the storage unit 22 (S45), and causes the stream processing unit 33 to input / output the output content data (S46). The stream processing unit 33 to which the content data is input from the storage unit 22 changes the bit rate of the input content data to the bit rate set by the CPU 30.

  Next, the CPU 30 outputs the content data whose bit rate has been changed by the stream processing unit 33 to the hybrid drive device 2, controls the control unit 20, and inputs it to the recording unit 21 (S47). By executing the processing of S47, the recording unit 21 records the content data stored in the storage unit 22 on the recording disk D at the bit rate calculated by the CPU 30 in S43. That is, the CPU 30 and the recording unit 21 in S47 function as a compression recording unit.

Note that the recording apparatus 1 is not limited to the configuration in which the stream processing unit 33 of the back end unit 3 changes the bit rate of the content data. For example, the hybrid drive device 2 includes a rate change unit (not shown) that changes the bit rate of the input content data, and the content data output from the storage unit 22 is input to and output from the rate change unit and then input to the recording unit 21. It may be configured.
Further, when the bit rate of the content data output from the storage unit 22 is equal to or lower than the bit rate calculated in S43, it is not necessary to change the bit rate. For this reason, the content data is input to the recording unit 21 at the bit rate as it is.

  Further, when the bit rate calculated in S43 is less than the predetermined lower limit value, the recording disk D mounted on the recording unit 21 is ejected, and the user is prompted to mount a new recording disk D. It may be configured. Conversely, when the bit rate calculated in S43 exceeds a predetermined upper limit value, the upper limit value may be used instead of the calculated bit rate. The lower limit value / upper limit value of the bit rate may be a fixed value, or may be determined by the CPU 30 according to the image quality range desired by the user.

  Furthermore, in order to save the storable capacity of the storage unit 22, the stream processing unit 33 may change the content data to a bit rate smaller than the original bit rate before inputting the content data to the storage unit 22. Good. However, it is desirable that the bit rate after the change is not less than the maximum value of the bit rate calculated in S43.

After the processing of S47 is completed, the CPU 30 determines whether or not all the content data stored in the storage unit 22 has been recorded on the recording disk D by changing the bit rate (S48), and the recording has not been completed. If not (NO in S48), the process returns to S45.
When the recording of the content data is finished (YES in S48), as shown in FIG. 6, the CPU 30 compares the content data recorded on the recording disk D with the content data stored in the storage unit 22. Then, it is determined whether or not it corresponds (S60). The CPU 30 in S60 functions as a correspondence determination unit.

  When comparing the correspondence of content data, for example, the CPU 30 controls the recording unit 21 via the control unit 20 and outputs the content data recorded on the recording disc D for a plurality of frames. Further, the CPU 30 controls the storage unit 22 via the control unit 20 to output the content data stored in the storage unit 22 for a plurality of frames. At this time, the content data output from the recording disk D and the storage unit 22 are the first frame, the last frame, and the like. Next, the CPU 30 compares the output content data using, for example, a pattern matching method, and calculates the degree of coincidence. Further, the CPU 30 determines whether or not the calculated coincidence is equal to or greater than the predetermined coincidence. If the calculated coincidence is equal to or greater than the predetermined coincidence, the CPU 30 determines that it corresponds. Judge that there is no.

  That is, the process of S60 determines whether or not the program reproduced based on the content data recorded on the recording disk D matches the program reproduced based on the content data stored in the storage unit 22. This is a process for determining. If the programs to be reproduced match, dubbing from the storage unit 22 to the recording disk D has succeeded, and if they do not match, the dubbing has failed.

  If the content data output from each of the recording disk D and the storage unit 22 corresponds (YES in S60), the dubbing from the storage unit 22 to the recording disk D is successful. Therefore, the CPU 30 deletes the content data stored in the storage unit 22 (S61). At this time, the CPU 30 may directly access the storage unit 22 to delete the content data, or the control unit 20 may be controlled to delete the content data. The CPU 30 in S61 functions as an accumulation deletion unit.

After the processing of S61 is completed, the CPU 30 detects the recordable capacity of the recording disk D by causing the recording unit 21 to read the recording disk D via the control unit 20 (S62). The CPU 30 and the recording unit 21 in S62 function as a capacity detection unit.
Next, the CPU 30 overwrites the recordable capacity detected in S62 with the recordable capacity already stored in the volatile memory 34 (S63), and then returns the process to S31.

  Note that the CPU 30 is not limited to the configuration that immediately deletes content data in S61. For example, the CPU 30 may be configured to delete content data that can be deleted at a predetermined timing by only associating information indicating that the content data can be deleted at the time of executing S61. Here, the predetermined timing is a timing when the accumulable capacity of the storage unit 22 becomes equal to or less than a predetermined capacity, or a timing when the user gives a deletion command to the recording apparatus 1 using the remote controller 5.

  If the content data recorded on the recording disk D and the content data stored in the storage unit 22 do not correspond (NO in S60), dubbing from the storage unit 22 to the recording disk D has failed. Therefore, the CPU 30 determines whether or not the type of the recording disk D stored in the volatile memory 34 is a type capable of rewriting content data (S64).

When the recording disk D is a rewritable type (YES in S64), the CPU 30 controls the operation of the recording unit 21 via the control unit 20 and is recorded on the recording disk D as a result of the process of S47. The content data is deleted (S65).
When the recording disk D is of a non-rewritable type (NO in S64), the CPU 30 controls the operation of the recording unit 21 via the control unit 20 and is recorded on the recording disk D as a result of the process of S47. The invalid content data is invalidated (S66).

After the process of S65 or S66 is completed, the CPU 30 detects the recordable capacity of the recording disk D by causing the recording unit 21 to read the recording disk D via the control unit 20 (S67). The CPU 30 and the recording unit 21 in S67 function as a capacity detection unit.
Further, the CPU 30 overwrites the recordable capacity detected in S67 with the recordable capacity already stored in the volatile memory 34 (S68).

  Next, the CPU 30 determines whether or not the recordable capacity stored in the volatile memory 34 is greater than or equal to a predetermined capacity (S69). If the recordable capacity is greater than or equal to the predetermined capacity (YES in S69), the process proceeds to S43. return. At this time, in S43, the bit rate of the content data to be recorded on the recording disk D is calculated based on the data amount detected in S41 and the recordable capacity newly detected in S67.

That is, when dubbing fails and the rewritable recording disk D is loaded in the recording unit 21, the recorded content data is deleted and the same content data is recorded on the recording disk D again.
Further, when the write-once recording disk D is mounted on the recording unit 21, if the recordable capacity of the recording disk D is sufficient, the recorded content data is invalidated and the same content data is recorded again. Recorded on disk D.
On the other hand, if the recordable capacity of the recording disk D is insufficient, after the recorded content data is invalidated, the same content data is recorded on a new recording disk D having a sufficient recordable capacity. That's fine.

Therefore, when the recordable capacity stored in the volatile memory 34 is less than the predetermined capacity (NO in S69), the CPU 30 transfers the recording disk D to the recording unit 21 via the control unit 20. Is discharged (S70).
When the process of S70 is executed, the process of S17 shown in FIG. 3 is executed. When a new recording disk D is loaded in the recording unit 21, the process of S14 shown in FIG. 3 is executed.

After the process of S70 is completed, the CPU 30 determines whether or not the recordable capacity of the recording disk D is stored in the volatile memory 34 (S71).
When the recordable capacity of the recording disk D is not stored in the volatile memory 34 (NO in S71), since the recording disk D is not loaded in the recording unit 21, the CPU 30 repeatedly executes the process of S71.
When the recordable capacity of the recording disk D is stored in the volatile memory 34 (YES in S71), the CPU 30 returns the process to S69.

The recording apparatus 1 as described above has an intermediate configuration between a recording apparatus as described in Patent Document 1 and a recording apparatus incorporating only an optical disk drive, and has the advantages of both. In other words, the recording device 1 is easy to operate, as is the case with a recording device having only an optical disk drive, and can record on the recording disk D as with the recording device described in Patent Document 1. Program failure due to lack of capacity is suppressed. In addition, the picture quality of the reproduced program is uniform.
Further, since the bit rate is not changed before the content data is stored in the storage unit 22, it is not necessary to execute the bit rate changing process a plurality of times. As a result, the recording apparatus 1 can realize a reduction in recording processing time and a reduction in calculation load.

Furthermore, the recording device 1 is configured to detect the data amount of content data already stored in the storage unit 22. For this reason, for example, when the amount of content data is estimated based on the recording reservation information, or when the amount of content data to be recorded is acquired from the outside, the accurate amount of content data is reduced. Can be obtained. As a result, an optimum bit rate can be calculated based on an accurate data amount.
If the bit rate is calculated based on an inaccurate amount of data, if the bit rate is too high, the recordable capacity of the recording disk D may be insufficient and content data recording may fail. On the other hand, if the bit rate is too low, the image quality of the reproduced program may be unnecessarily lowered.

  Furthermore, the user does not need to be aware of dubbing from the storage unit 22 to the recording disk D. As a result, the user can easily operate the recording apparatus 1, and the convenience for the user can be improved.

  In addition, when the dubbing to the recording disk D is successful, the content data stored in the storage unit 22 is deleted by the process of S61, so that unlimited copying of the content data can be suppressed. If dubbing to the recording disk D fails, the content data recorded on the recording disk D is deleted by the process of S65, or the content recorded on the recording disk D by the process of S66. Since data is invalidated, unlimited copying of content data can be suppressed. As a result, the recording apparatus 1 can protect the copyright.

In addition, when dubbing to the recording disk D fails, dubbing can be performed again. For this reason, the content data can be reliably recorded on the recording disk D.
When recording a plurality of programs on the recording disk D, the recording apparatus 1 may record a plurality of programs in the storage unit 22 and dubb the recorded programs together on the recording disk D. For this purpose, the CPU 30 detects the total amount of content data of each of the plurality of programs in the process of S41 shown in FIG. 5, calculates the bit rate in S43 based on the detection result, and in S45 to S48. Then, the content data of each of the plurality of programs is sequentially output from the storage unit 22 and input to the recording unit 21 at the bit rate calculated in S43. In this case, the image quality of a plurality of programs recorded on the recording disk D is uniform.

  By the way, the timing of recording a plurality of programs on the recording disk D may be determined in advance (for example, every week) or may be designated by the user. Further, the CPU 30 detects the data amount of one content data or the sum of the data amounts of a plurality of content data, calculates the bit rate based on the detection result, and the calculated bit rate reaches a bit rate within a predetermined range. In such a case, the content data may be recorded on the recording disk D. In such a configuration, for example, when the user desires to record a program with standard image quality, when the calculated bit rate reaches a bit rate in a range corresponding to the standard image quality, Are recorded on the recording disk D. As a result, the recordable capacity of the recording disk D can be used without waste, and a desired image quality can be obtained.

Embodiment 2. FIG.
The main configuration of the recording apparatus 1 in the present embodiment is substantially the same as the main configuration of the recording apparatus 1 in the first embodiment. For this reason, parts corresponding to those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
The EPG is broadcast periodically, for example, by TV broadcasting. For this reason, the recording apparatus 1 can obtain EPG data by performing predetermined data processing on the stream data input to the digital tuner 31. The EPG data includes data indicating the broadcast start time and broadcast end time of the program. The broadcast end time may be the broadcast start time of the next program.

The stream processing unit 33 generates content data by performing predetermined data processing on the stream data input from the digital tuner 31 and / or the encoder 32, as in the first embodiment. Furthermore, unlike the first embodiment, the stream processing unit 33 changes the bit rate of the content data to the bit rate set by the CPU 30 simultaneously with the generation of the content data.
Hereinafter, a procedure for recording a program in the recording apparatus 1 according to the present embodiment will be described.

The recording disk confirmation process executed by the CPU 30 of the present embodiment is the same as the recording disk confirmation process shown in FIG. 3 of the first embodiment.
7 to 9 are flowcharts showing the procedure of the scheduled recording process executed by the CPU 30 in the recording apparatus 1 which is a recording apparatus according to Embodiment 2 of the present invention.
As shown in FIG. 7, the CPU 30 determines whether or not a recording reservation has been made by the user based on the operation signal received via the receiving unit 14 (S81), and the recording reservation has not been made. (NO in S81), the process of S81 is repeatedly executed.
When the recording reservation is made (YES in S81), the CPU 30 stores the recording reservation information in the nonvolatile memory 37 (S82).

Next, the CPU 30 calculates the data amount of the content data of the program to be recorded based on the recording reservation information stored in the volatile memory 34 (S83).
Since the content data has not yet been obtained at the time when the process of S83 is executed, the actual data amount of the content data cannot be detected. For this reason, the data amount calculated in S83 is the estimated data amount of the content data and the data amount before the bit rate is changed by the stream processing unit 33.

When content recording is reserved using EPG, the recording start time and recording end time of the program correspond to the broadcast start time and broadcast end time of the program. Therefore, the CPU 30 in S83 obtains the broadcast start time and broadcast end time of the program from the EPG data, and calculates the broadcast time during which the program is broadcast by subtracting the broadcast start time from the acquired broadcast end time. Next, the CPU 30 calculates the data amount of the content data of the program to be recorded based on the calculated broadcast time.
When the data amount of the program content data is included in the EPG data, the CPU 30 in S83 may read the data amount of the content data of the program to be reserved for recording from the EPG data.

  When the content is reserved for recording without using the EPG, the CPU 30 in S83 calculates a recording time for recording the program based on the recording start time and recording end time directly given by the user. Next, the CPU 30 calculates the data amount of the content data of the program to be recorded based on the calculated recording time.

After completing the process of S83, the CPU 30 determines whether or not the recordable capacity of the recording disk D is stored in the volatile memory 34 (S84).
When the recordable capacity of the recording disk D is not stored in the volatile memory 34 (NO in S84), since the recording disk D is not loaded in the recording unit 21, the CPU 30 repeatedly executes the process of S84. That is, in the recording apparatus 1 of the present embodiment, even if the recording disk D is not attached, even the recording to the program storage unit 22 is not executed.

  When the recordable capacity of the recording disk D is stored in the volatile memory 34 (YES in S84), the CPU 30 is based on the data amount calculated in S83 and the recordable capacity stored in the volatile memory 34. Then, the bit rate of the content data to be recorded on the recording disk D is calculated (S85). The CPU 30 in S85 functions as a data compression calculation unit.

After the processing of S43 is completed, the CPU 30 sets the bit rate that is the calculation result of S85 in the stream processing unit 33 (S86).
After completing the process of S86, the CPU 30 determines whether or not the recording start time has been reached using a clock unit (not shown) (S87). If the recording start time has not been reached (NO in S87), the CPU 30 Repeat the process.

  When the recording start time is reached (YES in S87), the CPU 30 controls the digital tuner 31, for example, to output stream data obtained by converting broadcast signals of channels reserved for recording to the stream processing unit 33. Further, the content data generated by the stream processing unit 33 is output to the hybrid drive device 2 (S88). At this time, the stream processing unit 33 generates content data of a program broadcast on a channel reserved for recording, and further changes the bit rate of the content data to the bit rate set by the CPU 30.

Next, as illustrated in FIG. 8, the CPU 30 controls the control unit 20 to input the content data output from the stream processing unit 33 to the storage unit 22 (S91). By executing the processing of S91, the content data is stored in the storage unit 22 at the bit rate calculated by the CPU 30. The CPU 30 in S91 functions as compression / accumulation control means.
In the present embodiment, when the content data is stored in the storage unit 22, the bit rate of the content data is changed to a small bit rate, so the data amount of the content data stored in the storage unit 22 is small. That is, the storable capacity of the storage unit 22 is saved.

Next, the CPU 30 determines whether or not the recording end time has been reached (S92). If the recording end time has not been reached (NO in S92), the process returns to S91 and the content data for the storage unit 22 is returned. Continues input control.
When the recording end time is reached (YES in S92), the CPU 30 ends the content data input control for the storage unit 22 (S93).
After the processing of S93, the CPU 30 deletes the recording reservation information stored in the nonvolatile memory 37 (S94).

  Next, the CPU 30 controls the control unit 20 to output content data from the storage unit 22 (S95), and input the output content data to the recording unit 21 (S96). By executing the process of S96, the recording unit 21 records the content data stored in the storage unit 22 on the recording disk D at the same bit rate. That is, the CPU 30 and the recording unit 21 in S96 function as data recording means.

After the process of S96 is completed, the CPU 30 determines whether or not all the content data stored in the storage unit 22 has been recorded on the recording disk D (S97). If the recording has not been completed (S97) NO), the process returns to S95.
When the recording of the content data is completed (YES in S97), as shown in FIG. 9, the CPU 30 compares the content data recorded on the recording disk D with the content data stored in the storage unit 22. It is determined whether or not it corresponds (S110). The CPU 30 in S110 functions as a correspondence determination unit.

  When the content data output from each of the recording disk D and the storage unit 22 corresponds (YES in S110), the dubbing from the storage unit 22 to the recording disk D is successful. Therefore, the CPU 30 deletes the content data stored in the storage unit 22 (S111). The CPU 30 in S111 functions as an accumulation deletion unit.

After the processing of S111 is completed, the CPU 30 detects the recordable capacity of the recording disk D by causing the recording unit 21 to read the recording disk D via the control unit 20 (S112). The CPU 30 and the recording unit 21 in S62 function as a capacity detection unit.
Next, the CPU 30 overwrites the recordable capacity detected in S112 with the recordable capacity already stored in the volatile memory 34 (S113), and returns the process to S81.

When the content data recorded on the recording disk D and the content data stored in the storage unit 22 do not correspond (NO in S110), dubbing from the storage unit 22 to the recording disk D has failed. Therefore, the CPU 30 determines whether or not the type of the recording disk D stored in the volatile memory 34 is a type in which the content data can be rewritten (S114).
When the recording disk D is of a rewritable type (YES in S114), the CPU 30 controls the operation of the recording unit 21 via the control unit 20 and is recorded on the recording disk D as a result of the process of S96. The content data is deleted (S115), and the process returns to S95.

If the recording disk D is of a non-rewritable type (NO in S114), the CPU 30 controls the operation of the recording unit 21 via the control unit 20 and is recorded on the recording disk D as a result of the process of S96. The invalid content data is invalidated (S116).
Next, the CPU 30 moves the recordable capacity stored in the volatile memory 34 to the nonvolatile memory 37 (S117). The recordable capacity stored in the nonvolatile memory 37 as a result of the process of S117 is hereinafter referred to as an initial recordable capacity.

After the processing of S117 is completed, the CPU 30 causes the recording unit 21 to eject the recording disk D via the control unit 20 (S118).
When the process of S118 is executed, the process of S17 shown in FIG. 3 is executed. When a new recording disk D is loaded in the recording unit 21, the process of S14 shown in FIG. 3 is executed.

After the process of S118 ends, the CPU 30 determines whether or not the recordable capacity of the recording disk D is stored in the volatile memory 34 (S119).
When the recordable capacity of the recording disk D is not stored in the volatile memory 34 (NO in S119), since the recording disk D is not loaded in the recording unit 21, the CPU 30 repeatedly executes the process of S119.
When the recordable capacity of the recording disk D is stored in the volatile memory 34 (YES in S119), the CPU 30 stores the recordable capacity stored in the volatile memory 34 in the nonvolatile memory 37. It is determined whether or not the first recordable capacity is exceeded (S120).

When the recordable capacity stored in the volatile memory 34 is less than the initial recordable capacity stored in the nonvolatile memory 37 (NO in S120), the CPU 30 returns the process to S118.
When the recordable capacity stored in the volatile memory 34 is equal to or greater than the first recordable capacity stored in the nonvolatile memory 37 (YES in S120), the CPU 30 is stored in the nonvolatile memory 37. The first recordable capacity is deleted (S121), and the process returns to S95.

That is, when a rewritable recording disk D is loaded in the recording unit 21, the recorded content data is deleted, and the same content data is recorded on the recording disk D again.
When the write-once recording disk D is mounted on the recording unit 21, the same content data is recorded on the new recording disk D.
When the write-once recording disk D is mounted on the recording unit 21, the bit rate may be recalculated in the same manner as in the first embodiment.

Similar to the recording apparatus 1 of the first embodiment, the recording apparatus 1 as described above is an intermediate between a recording apparatus as described in Patent Document 1 and a recording apparatus having only an optical disk drive. It has a configuration and has the advantages of both. In other words, the recording device 1 is easy to operate, as is the case with a recording device having only an optical disk drive, and can record on the recording disk D as in the recording device described in Patent Document 1. Program failure due to lack of capacity is suppressed. In addition, the picture quality of the reproduced program is uniform.
Further, since the bit rate is not changed after the content data 22 is accumulated in the accumulation unit, it is not necessary to execute the bit rate changing process a plurality of times. As a result, the recording apparatus 1 can realize a reduction in recording processing time and a reduction in calculation load.

Furthermore, since the content data is stored in the storage unit 22 after the bit rate of the content data is changed in advance, the storable capacity of the storage unit 22 can be saved.
Furthermore, the user does not need to be aware of dubbing from the storage unit 22 to the recording disk D. As a result, the user can easily operate the recording apparatus 1, and the convenience for the user can be improved.

  In addition, when the dubbing to the recording disk D is successful, the content data stored in the storage unit 22 is deleted by the processing of S111, so that unlimited copying of the content data can be suppressed. If dubbing to the recording disk D fails, the content data recorded on the recording disk D is deleted by the process of S115, or the content recorded on the recording disk D by the process of S116 Since data is invalidated, unlimited copying of content data can be suppressed. As a result, the recording apparatus 1 can protect the copyright.

In addition, when dubbing to the recording disk D fails, dubbing can be performed again. For this reason, the content data can be reliably recorded on the recording disk D.
When recording a plurality of programs on the recording disk D, the recording apparatus 1 may record a plurality of programs in the storage unit 22 and dubb the recorded programs together on the recording disk D.

  For this purpose, the CPU 30 calculates the total amount of content data of each of a plurality of programs reserved for recording in the process of S83 shown in FIG. 7, and calculates the bit rate in S85 based on the calculation result. . In S88 and S91 shown in FIGS. 7 and 8, the CPU 30 inputs the content data to the storage unit 22 at the bit rate calculated in S85, and in S95 and S96, the content data of each of the programs is sequentially stored 22 and input to the recording unit 21. In this case, the image quality of a plurality of programs recorded on the recording disk D is uniform.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is not intended to include the above-described meanings, but is intended to include meanings equivalent to the claims and all modifications within the scope of the claims.

For example, in the first and second embodiments, the recording apparatus 1 that records content data on the recording disk D has been described. However, the present invention is not limited to this. For example, the recording device 1 may be configured to record content data on a portable hard disk or a memory card attached thereto.
Furthermore, the recording device 1 may be configured to record content data of content other than programs broadcast by TV broadcasting.
Further, as long as the effect of the present invention is obtained, the recording apparatus 1 may include components that are not disclosed in the first and second embodiments.

1 Recording device (recording device)
20 control unit 22 storage unit 30 CPU
D Recording disc (recording medium)

Claims (4)

In a recording apparatus for recording content data on a removable recording medium,
A storage unit for storing content data;
Data storage control means for storing content data to be recorded in the storage unit before recording the recording medium on the recording medium;
Accumulation amount detection means for detecting the amount of content data accumulated in the accumulation unit;
Capacity detecting means for detecting the recordable capacity of the recording medium;
Accumulation compression calculation means for calculating the compression rate of the content data to be recorded on the recording medium based on the detection result of the capacity detection means and the detection result of the accumulation amount detection means;
Compression recording means for recording content data stored in the storage section on the recording medium at a compression rate calculated by the storage compression calculation means ;
Correspondence determination means for determining whether or not the content data recorded on the recording medium and the content data stored in the storage unit correspond to each other when recording of the content data on the recording medium is completed When,
A storage deletion unit that deletes the content data stored in the storage unit when it is determined that the correspondence determination unit is compatible ;
The correspondence determination unit calculates a matching degree by comparing a frame of content data recorded on the recording medium and a frame of content data stored in the storage unit, and the calculated matching degree is a predetermined match. If it is more degrees determined to correspond, a recording apparatus according to claim Citea Rukoto so if less than the predetermined degree of match is determined not to correspond. In a recording apparatus for recording content data on a removable recording medium,
A storage unit for storing content data;
Data amount calculation means for calculating the amount of content data to be recorded;
Capacity detecting means for detecting the recordable capacity of the recording medium;
Data compression calculation means for calculating the compression rate of the content data to be recorded on the recording medium based on the detection result of the capacity detection means and the calculation result of the data amount calculation means;
Before storing the content data to be recorded on the recording medium, the compression / accumulation control means for accumulating in the accumulator at the compression ratio calculated by the data compression arithmetic means;
Data recording means for recording the content data stored in the storage unit on the recording medium ;
Correspondence determination means for determining whether or not the content data recorded on the recording medium and the content data stored in the storage unit correspond to each other when recording of the content data on the recording medium is completed When,
A storage deletion unit that deletes the content data stored in the storage unit when it is determined that the correspondence determination unit is compatible ;
The correspondence determination unit calculates a matching degree by comparing a frame of content data recorded on the recording medium and a frame of content data stored in the storage unit, and the calculated matching degree is a predetermined match. If it is more degrees determined to correspond, a recording apparatus according to claim Citea Rukoto so if less than the predetermined degree of match is determined not to correspond.   The recording apparatus according to claim 2, wherein the data amount calculation means calculates the data amount using EPG (Electronic Program Guide) data. Content data recording apparatus according to any one of claims 1 to 3, characterized in that the data representing the content of programs to be broadcast.

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