JP2010205309A - Recording and reproducing device and recording and reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing device which, even when power from the outside is cut off during constant recording of an input signal in a volatile memory for the follow-up reproduction, holds the input signal before power cutting-off so as to enable follow-up reproduction to be performed. <P>SOLUTION: The recording and reproducing device (exemplified by recording and reproducing device 1) is provided with, in addition to a memory disk 10 having a volatile memory used for constant recording, a driving device (e.g., input/output I/F 14) for a portable recording medium. The control unit 15 of the recording and reproducing device 1 controls, when a recordable portable recording medium is loaded on the input/output I/F 14 during the constant recording in the volatile memory, the input/output I/F 14 so as to constantly record data for backup in the portable recording medium. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a recording / reproducing apparatus and a recording / reproducing method, and more particularly to a recording / reproducing apparatus and a recording / reproducing method capable of constantly recording a broadcast signal in a volatile memory and reproducing it from an arbitrary point.

  2. Description of the Related Art Conventionally, a recording / playback apparatus that continually records a broadcast program being received on a hard disk or the like automatically for later playback has been distributed. When the user selects a channel for viewing, etc., the broadcast program for that channel is automatically recorded sequentially. When the hard disk is full, the recorded contents are overwritten in order from the oldest. By doing so, the latest program of a predetermined time can always be played back (follow-up playback).

  For example, a television receiver described in Patent Literature 1 includes a television receiving unit that receives a television signal including video and audio signals of a broadcast program, and a recording unit that records the received television signal on a randomly accessible recording medium. And a recording / reproducing means comprising a reproducing means capable of reproducing a television signal being recorded on the recording medium from an arbitrary point of time, a video display means for displaying an image represented by the video signal of the reproduced television signal, and a reproduction Audio output means for outputting audio represented by the audio signal of the television signal and control input means for controlling stop and restart of reproduction by the recording / reproducing means.

  On the other hand, a data storage device (called a memory disk) using a volatile memory or a nonvolatile memory such as an SDRAM (Synchronous Dynamic Random Access Memory) has been conventionally used in a computer to make it look like a hard disk.

Japanese Patent No. 2935788

  As described above, a hard disk is generally used as a recording medium for continuous recording, but it is desirable to use a semiconductor memory from the viewpoint of high speed, quietness, power consumption, heat generation, impact resistance, and the like.

  However, when a volatile memory such as an SDRAM is used as the semiconductor memory, if the power supply is cut off due to a power failure or the like, the recorded content recorded at all times is lost, and the follow-up reproduction cannot be performed.

  Further, in the television receiver described in Patent Document 1, no consideration is given to adopting a volatile memory as a randomly accessible recording medium. Therefore, even if a volatile memory is adopted as a recording medium in this television receiver, follow-up reproduction cannot be performed because there is no means for holding the recorded broadcast signal against an unexpected power-off state such as a power failure. .

  The present invention has been made in view of the above-described circumstances, and the purpose of the present invention is even when an external power supply is cut off while constantly recording an input signal in a volatile memory for follow-up reproduction. Another object of the present invention is to provide a recording / reproducing apparatus and a recording / reproducing method capable of holding an input signal before being cut off so that follow-up reproduction is possible.

  In order to solve the above-described problem, a first technical means of the present invention includes a reproducing unit that reproduces an input signal, a recording unit that includes a volatile memory and records the input signal in the volatile memory, and While reproducing the input signal by the reproducing unit, the recording unit records the input signal in the volatile memory, and the input signal recorded in the volatile memory is changed from the arbitrary point in time according to a user operation. A recording / reproducing device for reproducing by the reproducing unit, the recording / reproducing device further comprising a drive device for a portable recording medium, wherein the recording / reproducing control unit comprises the volatile memory When a recordable portable recording medium is mounted on the drive device during recording during reproduction, the drive device is controlled to perform backup recording on the portable recording medium. It is what.

  According to a second technical means, in the first technical means, the recording / reproducing control unit is mounted with a portable recording medium capable of recording in the driving device at the time of recording during the reproduction to the volatile memory. In this case, only when a predetermined condition is satisfied, the drive device is controlled to perform backup recording on the portable recording medium.

  According to a third technical means, in the second technical means, the predetermined condition includes a condition that the portable recording medium is a rewritable recording medium.

  According to a fourth technical means, in the second or third technical means, the predetermined condition includes a condition that a recordable capacity of the portable recording medium is equal to or more than a first predetermined capacity. It is.

  According to a fifth technical means, in any one of the second to fourth technical means, the predetermined condition includes a condition that recording for backup on the portable recording medium is permitted by a user setting. It is characterized by.

  In a sixth technical means, in any one of the second to fifth technical means, the predetermined condition includes a condition that the recording during reproduction on the portable recording medium is executed less than a predetermined number of times. It is characterized by that.

  According to a seventh technical means, in any one of the second to sixth technical means, the predetermined condition includes a condition that a recording reservation for the portable recording medium is not set. .

  According to an eighth technical means, in any one of the second to seventh technical means, the predetermined condition includes a condition that there is a history that a power failure has occurred in a past fixed period. .

  According to a ninth technical means, in any one of the second to eighth technical means, the predetermined condition is that an error in a defective area at the time of data writing to the portable recording medium does not reach a predetermined frequency or a predetermined number of times. It is characterized by including the condition.

  A tenth technical means according to any one of the first to ninth technical means, wherein the recording / reproducing control unit is configured such that when a recordable capacity of the portable recording medium becomes equal to or less than a second predetermined capacity, The drive device is controlled so as to erase only the input signal recorded for the backup from the portable recording medium.

  According to an eleventh technical means, in any one of the first to tenth technical means, the recording / reproducing control unit performs the reproduction to the volatile memory when a power source of the recording / reproducing apparatus is turned off by a user. When the recording is stopped by the user, the driving device is controlled so that only the input signal recorded for the backup is erased from the portable recording medium.

  A twelfth technical means includes a reproducing unit that reproduces an input signal, a recording unit that has a volatile memory and records the input signal in the volatile memory, a drive device for a portable recording medium, a control unit, A recording / reproducing method in a recording / reproducing apparatus, wherein the control unit causes the recording unit to record the input signal in the volatile memory while the reproducing unit reproduces the input signal; And the control unit reproduces the input signal recorded in the volatile memory by the reproduction unit from an arbitrary point of time according to a user operation, and the reproduction is being performed on the volatile memory. At the time of recording, when the control unit determines whether or not a recordable portable recording medium is mounted on the driving device, and when it is determined that the recording unit is mounted in the determination step, the control unit But said portable And controlling the drive device so as to record for backup medium is obtained by further comprising a.

  According to the present invention, an input signal before being cut off is held so that follow-up reproduction is possible even when the external power supply is cut off during continuous recording of the input signal in the volatile memory for follow-up reproduction. It becomes possible.

It is a block diagram which shows the example of 1 structure of the video recording / reproducing apparatus based on this invention. It is a figure which shows the example of 1 structure of the memory disk using SDRAM in the recording / reproducing apparatus of FIG. It is a flowchart for demonstrating an example of the continuous recording process in the video recording / reproducing apparatus of FIG. It is a flowchart for demonstrating the other example of the continuous recording process in the video recording / reproducing apparatus of FIG. FIG. 5 is a flowchart for explaining an example of a predetermined condition determination process in the continuous recording process of FIG. 3 or FIG. 4.

  A recording / reproducing apparatus according to the present invention includes a reproducing unit that reproduces an input signal, a volatile memory, a recording unit that records the input signal in the volatile memory, and a recording / reproducing control unit. Assumption. This recording unit is a kind of what is called a memory disk. The recording / reproducing control unit causes the recording unit to record the input signal in the volatile memory while the reproducing unit reproduces the input signal (hereinafter, the recording during the reproduction is referred to as “always recording”), An input signal always recorded in the volatile memory is played back by the playback unit from an arbitrary time point according to a user operation. That is, the recording / playback control unit performs control such that chasing playback (tracking playback) is performed using a volatile memory.

  Hereinafter, a recording / reproducing apparatus according to the present invention will be described with reference to the drawings. However, in the following description, it is assumed that the input signal is a broadcast signal including both the video signal and the audio signal received by the broadcast receiving unit, and the recording / playback apparatus is cited as the recording / playback apparatus according to the present invention. However, it can also be configured as a radio recording / reproducing apparatus, for example. As input signals, in addition to broadcast signals, video and / or audio signals input for dubbing from other recording devices, video and / or audio signals externally input from tuner devices, via a network Thus, video and / or audio signals input from a server device or the like for download can also be applied.

  FIG. 1 is a block diagram showing a configuration example of a recording / playback apparatus according to the present invention, and FIG. 2 is a diagram showing a configuration example of a memory disk using SDRAM in the recording / playback apparatus of FIG.

  The recording / playback apparatus 1 illustrated in FIG. 1 includes a memory disk 10, a tuner 12, a transcoder 13, an input / output I / F (Interface) 14, a control unit 15, a remote control receiving unit 16, a decoder 17, an audio output unit 18, and A display output unit 19 is provided.

  The control unit 15 includes the recording / playback control unit, and includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like for controlling the entire apparatus. The control unit 15 may store a computer-readable program for executing the processing procedure described below in a ROM or the like so that the CPU can execute the program while reading the program into the RAM.

  The remote control receiving unit 16 includes a light receiving unit that receives an operation signal from an operation input unit such as a remote controller, and interprets the received operation signal and passes it to the control unit 15. The operation of the playback position (such as a return operation or a subsequent feed operation) when performing follow-up playback is also received by the remote control receiver 16 via the remote controller or the like. The operation can also be performed by an operation button (not shown) provided on the main body of the recording / playback apparatus 1.

  The tuner 12 is an example of the broadcast receiving unit, and has a configuration capable of receiving a digital broadcast wave via the antenna 11. Of course, the tuner 12 may be configured to receive both analog broadcast waves and digital broadcast waves, or may be configured to receive only analog broadcast waves. When the tuner is externally connected by STB (Set Top Box) or the like, the tuner 12 may not be provided. The tuner 12 and the terminal for external connection may be called a front end unit with respect to the back end unit including the transcoder 13, the control unit 15, the decoder 17, and the like.

  The reproduction unit can be exemplified mainly by the decoder 17, the audio output unit 18, and the display output unit 19. The audio output unit 18 includes an audio processing unit that performs various processes on the digital broadcast program received via the antenna 11, the portable recording medium, and the audio data of the content recorded in the memory disk 10. It is mainly composed of an audio output terminal that outputs audio data as audio to an internal speaker or an external speaker (not shown).

  The display output unit 19 performs video processing for performing various types of video processing on digital broadcast programs received via the antenna 11, video data of content recorded in a portable recording medium or the memory disk 10, and additional data. And a video output terminal for outputting processed video data or the like to a built-in or externally connected display device (not shown). Examples of the display device include a CRT (Cathode-ray Tube) device, a plasma display device, a liquid crystal display device, and an organic / inorganic EL (electroluminescence) device. The display output unit 19 can also output a list of recorded contents generated by the control of the control unit 15 and a list of a plurality of thumbnails generated from specific recorded contents to the display device.

  When viewing digital broadcasting using the recording / playback apparatus 1, the tuner 12 demodulates a high-frequency signal (digital modulation signal) input from the antenna 11 and inputs the demodulated signal to the decoder 17. The decoder 17 separates and decodes the input demodulated signal into a video signal, an audio signal, and an additional signal, and then generates a display control output signal and an audio control output signal synchronized therewith from the decoded signal. The output signal is output to the display output unit 19, and the audio control output signal is output to the audio output unit 18. The display control output signal is a signal related to a signal obtained by superimposing a decoded signal generated from the additional signal on a decoded signal generated from the video signal.

  The display control output signal output from the display output unit 19 is input to a built-in or externally connected display device such as a television device or a monitor device, and the display screen allows the user to perform a digital broadcast program corresponding to the display control output signal. Video and additional information can be viewed. The audio control output signal output from the audio output unit 18 is input to a built-in or externally connected display device with a speaker such as a television device or a monitor device, and the speaker allows the user to perform digital broadcasting corresponding to the audio control output signal. You can listen to the audio of the program. When the tuner 12 is configured to be able to receive an analog broadcast, the analog broadcast can be viewed if the decoder 17 is also configured to be compatible with analog.

  Further, when playing back content recorded on a memory disk 10 or a portable recording medium, which will be described later, such as at the time of follow-up playback according to a user operation, the decoder 17 is recorded on the memory disk 10 or the portable recording medium. After the content data is decoded, the video data and the additional data are converted into a video output format and output to the display output unit 19, and the audio data is converted into a format capable of audio output and the audio output unit 18. Output in sync with the video data.

  The recording unit can be exemplified mainly by the memory disk 10. The memory disk 10 has a volatile memory and is connected to an ATA I / F 15 b provided in the control unit 15 by an ATA bridge (Advanced Technology Attachment Bridge) 20. With this connection, data can be exchanged between the control unit 15 and the memory disk 10. In addition, although the example which the control part 15 and the memory disk 10 were connected based on the ATA standard is shown, it connects based on other standards, such as SATA (Serial ATA) standard and SCSI (Small Computer System Interface) standard. Also good. However, it is preferable to adopt the standard exemplified here because the memory disk 10 looks like a hard disk from the control unit 15.

  A configuration example of the memory disk 10 will be described with reference to FIG. However, the configuration is not limited to the configuration example described here, and any recording unit using a volatile memory may be used. For example, although an example using an SDRAM as a volatile memory is given, other volatile memories such as other types of DRAM (Dynamic RAM) and pseudo SRAM (Pseudo Static RAM) can be employed. Examples of other types of DRAM include various types such as a DDR (Double Data Rate) SDRAM, a DDR2 SDRAM, a DDR3 SDRAM, and a DDR4 SDRAM to be released. In addition, each volatile memory exemplified here needs to be refreshed. However, an SRAM (Static RAM) that does not need to be refreshed and can store and hold with little power consumption can also be applied.

  In addition to the ATA bridge 20, the memory disk 10 includes a file system controller 21, three memory controllers 22a, 22b, and 22c, SDRAMs 23a to 23d, 23a 'to 23d', SDRAMs 24a to 24d, SDRAMs 25a to 25d, a power supply control circuit 26, and a battery 27 are provided. However, as will be described later, the battery 27 is not essential in the present invention, and AC power may be supplied directly to the power control circuit 26.

  The file system controller 21 controls a file system in which a storage area is configured by all SDRAMs. The file system controller 21 is connected in parallel with modules (three modules in this example) that are composed of a memory controller and an SDRAM that controls the reading and writing of data. The memory controllers 22a, 22b, and 22c are controlled by the file system controller 21 to read and write data. Note that the volatile memories provided in one module are all the same type (the same standard as illustrated in the SDRAM, but the storage capacities may be different) because they share a memory controller, but are different. Different types of volatile memory may be employed between modules. For example, DDR2 may be mounted in one module and DDR3 may be mounted in another module.

  In the SDRAMs 23a to 23d, 23a 'to 23d', the SDRAMs 24a to 24d, and the SDRAMs 25a to 25d, data reading and writing are controlled by the memory controller 22a, the memory controller 22b, and the memory controller 22c, respectively. Each SDRAM is connected in parallel to the memory controller such that SDRAMs 23a-23d are connected in parallel to the memory controller 22a and SDRAMs 24a-24d are connected in parallel to the memory controller 22b. A plurality of SDRAMs may be connected in series as exemplified by the SDRAMs 23a and 23a ′. Since SDRAM has a high response speed, even if such a connection method is adopted, processing can be performed without any problem. Further, it is preferable that each SDRAM (SDRAM group) connected in parallel to one memory controller has the same storage capacity and distributes the storage area uniformly.

  As described above, the memory controllers 22a, 22b, and 22c control reading and writing of data with respect to the SDRAMs 23a and 23b, the SDRAMs 24a to 24d, and the SDRAMs 25a to 25d, respectively, based on the control from the file system controller 21.

  The memory disk 10 also stores management data for managing the recorded data when storing the data indicated by the broadcast signal, that is, the recorded data (video / audio data). This management data normally includes information such as the recording data title and recording time, and information such as the recording data storage area.

  The memory disk 10 is supplied with power from an AC power supply, but is illustrated with a battery 27 in order to prevent data from being lost immediately when the power supply is cut off, such as during a power failure or when the power cord is disconnected. Installed (or connected). The power control circuit 26 supplies power from the battery 27 to each module when power supply from the AC power supply is stopped. At this time, in view of data recovery, it is desirable to supply power to the module storing the management data with priority over the module storing the recorded data. For this purpose, the file system controller 21 may perform allocation in advance so as to save the recording data and the management data in separate modules.

  Although an example in which the battery 27 is mounted as the memory disk 10 is given, even if the external power supply is interrupted for a long time even if the battery 27 is present, the battery 27 has insufficient battery power and all data in the SDRAM is lost. It cannot be recovered. If the battery 27 is not installed, all data in the SDRAM will be lost after the external power supply is cut off.

  In order to cope with such a problem, the recording / reproducing apparatus 1 according to the present invention includes a drive device for a portable recording medium, and the recording / reproducing control unit described above attaches (inserts) a recordable portable recording medium. ), The drive unit is controlled so as to always record on the portable recording medium for backup. Since the recording / reproducing control unit is included in the control unit 15 as described above, hereinafter, the control of the constant recording to the driving device will be described as the control by the control unit 15.

  As an example of the drive device, the recording / playback device 1 includes an input / output I / F 14. The input / output I / F 14 inputs / outputs (writes / reads) data by mounting a portable recording medium such as a BD (Blu-Ray Disc), a DVD (Digital Versatile Disc), or a USB (Universal Serial Bus) memory. . This portable recording medium may be called a removable disk regardless of whether it is a disk type or not. The input / output I / F 14 exchanges data with the control unit 15 via an I / F 15 a provided in the control unit 15. Also in the input / output I / F 14, when data indicated by a broadcast signal, that is, recording data (video / audio data) is recorded on a portable recording medium, management data for managing the recording data is also recorded.

  The control unit 15 is loaded (inserted) with a portable recording medium that can be recorded in the input / output I / F 14 when the broadcast signal is always recorded in the volatile memory (the volatile memory in the memory disk 10). In this case, the input / output I / F 14 is controlled so as to always perform backup recording on the portable recording medium. Here, whether the recordable portable recording medium or the non-recordable portable recording medium can be recorded by the control unit 15 via the input / output I / F 14 (that is, recording / reproducing). It may be determined by checking the type indicating sharing / not recordable (that is, reproduction only). Moreover, the constant recording of the broadcast signal on the portable recording medium is only for backup, and naturally the constant recording of the broadcast signal on the volatile memory is executed when this backup is executed.

  At the time of follow-up playback, the recording / playback apparatus 1 first tries to play back from a point designated by the user with reference to the memory disk 10, and if playback is not possible (that is, data in the memory disk 10 can be played back due to a power failure or the like). Data in the portable recording medium is searched for and reproduced via the input / output I / F 14.

  As described above, in the recording / playback apparatus 1 according to the present invention, even when the external power supply is cut off during the continuous recording of the broadcast signal received in the volatile memory in the memory disk 10 for follow-up playback, It becomes possible to hold the broadcast signal before the interruption on the portable recording medium so that the follow-up reproduction is possible, and the data of the broadcast signal before the interruption is read from the portable recording medium via the input / output I / F 14. Thus, the follow-up reproduction can be performed from an arbitrary point of the program that the user wants to view. Such an effect is exhibited even when the battery 27 is not mounted or when the remaining battery level of the mounted battery 27 is exhausted.

  In addition, the recording / playback apparatus 1 includes a drive device (input / output I / F 14) such as a memory disk 10 and a BD, and is configured to be able to always record data indicated by broadcast signals in both of them. Since the configuration does not require a dedicated hardware configuration and can be realized by using the memory disk 10 used by the user for normal recording and a drive device for a portable recording medium, the design is easy and inexpensive. It is economical and economical. The recording / playback apparatus 1 includes, for example, a memory disk recorder with a driving device such as a BD having a built-in digital tuner, a memory disk recorder with a driving device such as a BD to which the digital tuner can be externally connected, a driving device such as a BD, and the like. A television device or a monitor device with a built-in memory disk can be appropriately configured.

  Furthermore, in the recording / reproducing apparatus 1 according to the present invention, when the recordable capacity of the portable recording medium is larger than the recordable capacity of the memory disk 10 at the time when the constant recording is started, the portable recording medium is more past. Follow-up playback can be performed. Therefore, at the time of follow-up reproduction, when the user goes back to a position where no data exists in the memory disk 10 according to the user's return operation, the control unit 15 retrieves data from the portable recording medium via the input / output I / F 14. You may do it.

  Next, supplementary description will be given regarding recording on a portable recording medium via the memory disk 10 or the input / output I / F 14. When recording a digital broadcast program (digital broadcast content) that is data indicated by a received broadcast signal, such as during continuous recording according to the present invention, the tuner 12 demodulates a high-frequency signal (digital modulation signal) input from the antenna 11. Then, the control unit 15 records on the memory disk 10 or records on various portable recording media such as a BD via the input / output I / F 14. In the recording / playback apparatus 1, the content recorded on the portable recording medium is moved to the memory disk 10 via the input / output I / F 14 or copied as it is, or conversely, the content recorded on the memory disk 10 is input. It can be configured such that it can be moved to a portable recording medium via the output I / F 14 or copied as it is. Therefore, at the time of follow-up reproduction from the portable recording medium after the power supply is restored, it is also possible to copy the data from the portable recording medium to the memory disk 10 and perform follow-up reproduction in a state where high-speed access is possible.

  When a received digital broadcast program is recorded, such as during continuous recording according to the present invention, the recording may be performed after rate conversion. The transcoder 13 is provided for such rate conversion. The transcoder 13 dequantizes the compression-encoded video data, changes the quantization step (also referred to as a quantization width, a quantization scale, a quantization coefficient, etc.) and re-quantizes it to perform compression processing. Do. The transcoder 13 can also record the content recorded on the memory disk 10 or the portable recording medium by converting the rate. Further, the rate conversion process can be performed on input data without changing the standard, and MPEG (Moving Picture Experts Group) -2 standard TS data is converted to H.264 format. It is also possible to perform conversion while converting input data into data of a standard different from the standard of the data, such as conversion to TS data of H.264 / AVC (Advanced Video Coding) standard.

  Further, instead of the transcoder 13, a device (a device including an encoder) that re-encodes and records the compression-encoded data after decoding can be employed. In the example of FIG. 1, the recording / playback apparatus 1 may be configured so that an encoder is provided instead of the transcoder 13 and the video data decoded by the decoder 17 is re-encoded by the encoder. Further, this encoder can be provided together with the transcoder 13 so that it can be compressed by both re-quantization and re-encoding processes.

  When the recording / playback apparatus 1 is configured to be able to receive an analog broadcast and the received analog broadcast program is recorded, the tuner 12 demodulates a high-frequency signal (analog modulation signal) input from the antenna 11, and the encoder demodulates the demodulated signal. And the encoded data may be converted into a format suitable for recording (for example, a program stream) and recorded on the memory disk 10 or a portable recording medium.

  Hereinafter, a preferred example of the constant recording process in the recording / playback apparatus 1 according to the present invention will be described with reference to FIGS.

  When a recording medium that is recordable in the input / output I / F 14 is mounted at the time of continuous recording in the volatile memory in the memory disk 10, the control unit 15 performs portable recording only when a predetermined condition is satisfied. It is desirable to control the input / output I / F 14 so that backup recording is always performed on the medium. Although examples of the predetermined conditions will be described later, conditions such as the user's setting contents, the type / status of the disk, the performance of writing and power failure, etc. may be adopted, and the execution / stop of backup may be controlled in a timely manner according to the adopted conditions.

  Such control will be specifically described with reference to FIG. FIG. 3 is a flowchart for explaining an example of the constant recording process in the recording / reproducing apparatus of FIG. First, the control unit 15 determines whether or not there has been a user instruction for continuous recording (step S1). The user instruction for continuous recording may be a transition instruction to the follow-up playback mode when, for example, the follow-up playback mode / non-follow-up playback mode is configured to be selectable by the user. As described above, the user instruction itself may be performed using a button on the main body or a remote controller. Of course, such a determination is not necessary when the default recording is set to always record or when the device is always always recording.

  If YES in step S1, the control unit 15 determines whether or not a recordable portable recording medium (hereinafter referred to as a recordable medium) is loaded via the input / output I / F 14 (step S2). The timing of this determination may be at the time of YES in step S1, but the determination is made when the portable recording medium is loaded, and the determination is made in the memory in the control unit 15 at least until the portable recording medium is removed. The determination result may be held.

  In the case of NO at step S2, the control unit 15 always records the broadcast signal only on the memory disk 10 (step S6). At this time, the control unit 15 performs control so that the data immediately after recording on the memory disk 10 or data with a predetermined time delay is output from the audio output unit 18 and the display output unit 19. Even if there is an operation that goes back in the past, it is preferable because it can be handled immediately. Of course, when the user does not perform the follow-up reproduction operation so as to go back in the past, the data received by the tuner 12 is directly decoded by the decoder 17 and output from the audio output unit 18 and the display output unit 19. Alternatively, it may be switched so that the data in the memory disk 10 is reproduced at the time when such an operation for following reproduction is performed.

  If YES in step S2, the control unit 15 determines whether or not a predetermined condition stored in an internal memory or the like is satisfied (step S3). If NO in step S3, the process proceeds to step S6.

  If YES in step S3, the control unit 15 controls the memory disk 10 and the input / output I / F 14 so that the broadcast signal is always recorded on both the memory disk 10 and the recordable medium (step S4). Also in step S4, as described in step S6, it is preferable to perform control so that data immediately after recording on the memory disk 10 or data with a predetermined time delay is output from the audio output unit 18 and the display output unit 19.

  Moreover, although the example which starts the continuous recording to both simultaneously was shown in step S4, the continuous recording to the memory disk 10 is started before the continuous recording to the recordable medium is decided (that is, before the determination of step S3). May be. In this case, a time lag occurs between the two, but if data stored in the memory disk 10 is copied to a recordable medium, for example, the same data as in the memory disk 10 can be stored in the recordable medium.

  After the process of step S4 or step S6, the control unit 15 determines whether or not a power-off operation has been performed (step S5). If there is, the process ends. If not, the process returns to step S2. Note that the off operation may include an operation for setting a standby state. Although the flow is not shown here, instead of returning to step S2, if step S4 is passed, the procedure returns to step S3, and if step S6 is passed, the procedure returns to step S2 or step S6 is continued. May be. When the determination in step S1 is performed, in step S5, it is determined whether or not there is a user instruction to end the continuous recording together with the determination of whether or not the power is turned off. May be.

  A processing example different from the processing example of FIG. 3 will be described with reference to FIG. FIG. 4 is a flowchart for explaining another example of the continuous recording process in the recording / reproducing apparatus of FIG. First, the control unit 15 performs the same processing as steps S1 to S4 and S6 in FIG. 3 (steps S11 to S14 and S18).

  After the processing in step S18, the same determination as in step S5 in FIG. 3, that is, whether or not there is a power-off operation (and whether or not there is an instruction to end recording constantly) is performed (step S19). Note that the off operation here may include an operation for setting the standby state. If YES in step S19, the process ends. If NO, the process returns to step S12. Here, instead of returning to step S12, the process of step S18 may be continued until YES is obtained in step S19.

  If YES in step S19 due to the operation for shifting to the standby state or the operation for ending the continuous recording, the recorded data recorded in the memory disk 10 is erased and then the transition to the standby state or the emergency recording is performed. You may make it transfer to a state. The erasing here may be to erase the recorded data itself (or not to perform refreshing so as to disappear), or to erase only the management information (management data) of the recorded data and later overwrite ( It may be in a writable state. When an off operation is performed to turn off the power and stop the power supply to the memory disk 10, the recorded data is automatically deleted by stopping the power supply to the memory disk 10.

  On the other hand, after the process of step S14, the control unit 15 determines whether or not the recordable capacity (that is, the remaining amount) of the recordable medium is equal to or less than the predetermined capacity R1 via the input / output I / F 14 (step S15). ). R1 may be determined to be 0.

  In the case of YES at step S15, only the broadcast signal recorded as backup from the recordable medium is deleted (step S17), and the process is terminated. Since the data originally recorded was recorded by the user, it is retained. Here, in the case of a disk-type portable recording medium, erasing means not erasing the recorded data itself, but erasing only the management data of the recorded data so that it can be overwritten later. The recorded data itself may be deleted by overwriting the data with blank data.

  As described above, the control unit 15 is configured so that when the recordable capacity of the recordable medium becomes equal to or less than the predetermined capacity R1, the input / output I It is preferable to control / F14. This control can be applied even when the determination of the predetermined condition is not adopted.

  Of course, after the process of step S17, since the remaining amount has recovered, the process may be executed again from step S11. Further, although the flow of the process is not illustrated, when the process of step S17 is performed after the determination of YES in step S15, it is preferable to proceed to step S13 or step S14 and resume the regular recording on the recordable medium. .

If NO in step S15, the same determination as in step S5 of FIG. 3, that is, whether or not there is a power-off operation (and whether or not there is an instruction to end recording constantly) is determined (step S16). If YES in step S16, the process proceeds to step S17 to delete the recorded data, and the process ends. Note that the off operation here may include an operation for setting the standby state. After such erasing, the control unit 15 may turn off the power or enter a standby state. on the other hand,
If it is determined in step S16 that there is an instruction to end recording at all times, the remaining amount has recovered after the process in step S17, so the process may be executed again from step S11.

  In this way, the control unit 15 deletes only the broadcast signal that is always recorded for backup from the recordable medium when the power of the recording / playback apparatus 1 is turned off by the user (of course, the normal off operation). In addition, it is preferable to control the input / output I / F 14. This control can be applied even when the determination of the predetermined condition is not adopted. Similarly, the control unit 15 performs input / output so as to erase only the broadcast signal that is always recorded for backup from the recordable medium when the user stops the continuous recording to the volatile memory in the memory disk 10. It is preferable to control the I / F 14. This control can be applied even when the determination of the predetermined condition is not adopted.

  Note that the recording data erasure has been described in step S17. However, the erasure of the recording data may be executed even when, for example, the channel being received is switched by a user instruction. In this case, only the recordable medium is used. Alternatively, the data in the memory disk 10 may be erased.

  If NO in step S16, the process returns to step S12. Here, instead of returning to step S12, the process may return to step S13, or the processes of steps S14 and S15 may be continued.

  Next, various examples of the predetermined condition determined by the control unit 15 in step S3 in FIG. 3 or step S13 in FIG. 4 will be described with reference to FIG. FIG. 5 is a flowchart for explaining an example of the predetermined condition determination process in the continuous recording process of FIG. 3 or FIG.

  First, it is determined whether or not continuous recording on a recordable medium (continuous recording for backup) is permitted by the user setting (step S21). Only in the case of YES, the process proceeds to step S4 / S14 to always record on both sides. Execute. Therefore, the control unit 15 may be configured to be able to set whether or not to perform continuous recording from the remote control receiving unit 16 and to read the setting from an internal memory or the like. For example, an OSD (On Screen Display) image of the menu screen may be output from the display output unit 19 in response to pressing of a menu key or the like on the remote controller, and further settings on the remote controller may be accepted to perform setting.

  In the case of NO in step S21, it is determined whether or not the recording reservation for the recordable medium is not set (step S22), and only in the case of YES, the process proceeds to step S4 / S14 to perform continuous recording on both sides. Therefore, the recording / playback apparatus 1 has a recording reservation function (recording reservation function), and the control unit 15 can perform setting for executing recording reservation from the remote control receiving unit 16 and can read the setting from an internal memory or the like. It may be configured as follows. The recording reservation is also set according to the user operation from the remote controller or the like, and the control unit 15 refers to the internal timer and sets the input / output I / F 14 etc. to record on the recordable medium when the reserved time comes. Control.

  Further, instead of step S22, it may be determined whether or not a recording reservation that uses a predetermined capacity or more is not set. Even if the determination process of step S22 is not adopted, if the recorded data corresponding to the constantly recorded data is erased from the recordable medium before the scheduled recording time arrives, the constantly recorded data is taken care of. Recording reservation can be carried out without doing.

  If NO in step S22, it is determined whether or not there is a history that a power failure has occurred in a certain fixed period in the past (step S23). Only in the case of YES, the process proceeds to step S4 / S14 to perform continuous recording on both sides. . Therefore, the control unit 15 may be configured to detect a power failure (including a case where the power is removed for some reason), store the history of the power failure in an internal memory or the like, and read the history.

  If NO in step S23, it is determined whether or not the recordable medium is rewritable (step S24). Only in the case of YES, the process proceeds to step S4 / S14 to perform continuous recording on both sides. This is because in the case of a disc that can be written only once, many discs are wasted if used for continuous recording. The control unit 15 determines whether the recording medium is rewritable via the input / output I / F 14 by checking the type of the loaded portable recording medium. This determination is preferably performed at the same time as the determination in step S2 / S12.

  If NO in step S24, it is determined whether or not the recordable capacity of the recordable medium is greater than or equal to a predetermined capacity R0 (step S25). Only in the case of YES, the process proceeds to step S4 / S14 to perform continuous recording on both sides. Execute. For this reason, the control unit 15 may be provided with a remaining amount detection unit that detects the remaining amount of recordable media via the input / output I / F 14. In addition, since the remaining amount of recordable media changes even during continuous recording, it is preferable to always detect even during continuous recording.

  If NO in step S25, it is determined whether or not constant recording on the same recordable medium has been executed less than a predetermined number of times (step S26). If YES, the process proceeds to step S4 / S14, and continuous recording on both sides is performed. Execute. In general, recordable media can be used by controlling the execution / stop of continuous recording under such writing conditions in consideration of the durability of recordable media, where the number of rewritable times is limited even if it is rewritable. It is possible to prevent the recordable medium from being destroyed or abnormal.

  Therefore, the control unit 15 stores a disk ID or the like for specifying an individual recordable medium in the internal memory or the like via the input / output I / F 14, and specifies the individual compared with the current recordable medium. It is configured to do so. With such a configuration, whether the same recordable medium or another recordable medium is used, even if it is once removed, information on the recordable media that has been loaded and stored in the memory in the control unit 15 (for example, the disk ID or the like) It can be determined by checking (information). Further, the control unit 15 may store the result of counting the number of times of continuous recording for each individual in an internal memory or the like. Even if the individual is not specified, the number of times may be counted only from when it is once worn until it is taken out, and the determination may be made only based on this count.

  In the case of NO in step S26, it is determined whether or not the error of the defective area at the time of writing data on the same recordable medium has not reached the predetermined frequency or the predetermined number of times (step S27). Go ahead and always record to both. By controlling such writing conditions in consideration of the reliability of recordable media, it is possible to prevent data recorded at all times from becoming a reproduction error. Here, when the error is compared with the predetermined frequency, the determination may be made in consideration of the error occurrence interval, that is, the number of occurrences within the predetermined time.

  In order to detect an error, the control unit 15 is configured to specify a recordable medium via the input / output I / F 14 and to perform an error when writing data to the recordable medium via the input / output I / F 14. What is necessary is just to comprise so that the detection part which detects may be provided. Errors can be detected as a result of continuous recording, as a result of recording on a recordable medium in another scene, as a result of executing test recording, and the error history can be read out to the internal memory of the control unit 15 Record it in a state. As described above, the determination may be made based only on the history of specifying the individual and storing the same recordable medium. However, in view of the possibility of the error on the input / output I / F 14 side, The history of recordable media (used within a certain period of time) may be comprehensively determined without specifying the individual recordable media. In this case, the normality / abnormality of the input / output I / F 14 can be determined. If a write error occurs during actual continuous recording, the continuous recording on the recordable medium may be terminated, and at that time, the error may be recorded in the memory in the control unit 15.

  If NO in step S27, the process proceeds to step S6 / S18 to perform continuous recording only on the memory disk 10. The determinations in steps S21 to S27 may be executed from any of them, but it is preferable to execute the determination from a determination process that does not require a load or time for the control unit 15 or the like. Moreover, although the example which progresses to step S4 / S14 when the result of determination of step S21-S27 is at least one is YES, only when one or more of these determination processes is YES, step S4 / You may employ | adopt the process which progresses to S14. In addition, in each of the determinations in steps S21 to S27, if NO is determined, control for prompting replacement of recordable media, for example, control such as ejecting recordable media or displaying a pop-up image in OSD display. You may make it perform.

  As described above, as the processing in the recording / reproducing apparatus 1, as described above, the present invention can also adopt a form as a recording / reproducing method as described above. The recording / reproducing method according to the present invention will be described with reference to the configuration example of FIG. 1. A step of recording the broadcast signal in the volatile memory (that is, always recording), and the control unit 15 receives the broadcast signal recorded in the volatile memory in the memory disk 10 by the remote control receiving unit 16 or the like. And a step of reproducing from an arbitrary point in time.

  The main feature of this recording / reproducing method is whether or not a portable recording medium that can be recorded on the input / output I / F 14 by the control unit 15 during constant recording in the volatile memory in the memory disk 10 is mounted. And a step of controlling the input / output I / F 14 so that the control unit 15 always performs backup recording on a portable recording medium when it is determined that it is mounted. In addition. Other applications are the same as those described as processing in the recording / playback apparatus 1, and the description thereof is omitted.

DESCRIPTION OF SYMBOLS 1 ... Recording / reproducing apparatus, 10 ... Memory disk, 11 ... Antenna, 12 ... Tuner, 13 ... Transcoder, 14 ... Input-output I / F, 15 ... Control part, 15a ... I / F, 15b ... ATA I / F, DESCRIPTION OF SYMBOLS 16 ... Remote control receiving part, 17 ... Decoder, 18 ... Audio | voice output part, 19 ... Display output part, 20 ... ATA bridge, 21 ... File system controller, 22a, 22b, 22c ... Memory controller, 23a, 23a ', 23b, 23b ', 23c, 23c', 23d, 23d ', 24a, 24b, 24c, 24d, 25a, 25b, 25c, 25d ... SDRAM, 26 ... power supply control circuit, 27 ... battery.

Claims (12)

A reproducing unit for reproducing an input signal; a recording unit having a volatile memory for recording the input signal in the volatile memory; and the volatile unit with respect to the recording unit during reproduction of the input signal by the reproducing unit A recording / reproducing apparatus comprising: a recording / reproducing control unit that records the input signal in a memory and reproduces the input signal recorded in the volatile memory from an arbitrary point of time according to a user operation. And
The recording / reproducing apparatus further includes a drive device for a portable recording medium,
The recording / reproducing control unit performs backup recording on the portable recording medium when a recordable portable recording medium is attached to the driving device during recording during reproduction in the volatile memory. As described above, the drive device is controlled as described above.   The recording / reproducing control unit is configured to perform the portable recording only when a predetermined recording condition is satisfied when a recordable portable recording medium is mounted in the driving device during recording during reproduction in the volatile memory. The recording / reproducing apparatus according to claim 1, wherein the driving device is controlled to perform recording for backup on a medium.   The recording / reproducing apparatus according to claim 2, wherein the predetermined condition includes a condition that the portable recording medium is a rewritable recording medium.   4. The recording / reproducing apparatus according to claim 2, wherein the predetermined condition includes a condition that a recordable capacity of the portable recording medium is equal to or more than a first predetermined capacity.   5. The recording / reproducing apparatus according to claim 2, wherein the predetermined condition includes a condition that the backup recording on the portable recording medium is permitted by a user setting. .   6. The recording / reproducing according to claim 2, wherein the predetermined condition includes a condition that the recording during reproduction on the portable recording medium is executed less than a predetermined number of times. apparatus.   The recording / reproducing apparatus according to claim 2, wherein the predetermined condition includes a condition that no recording reservation is set for the portable recording medium.   The recording / reproducing apparatus according to claim 2, wherein the predetermined condition includes a condition that there is a history that a power failure has occurred in a past certain period.   The predetermined condition includes a condition that an error in a defective area at the time of data writing to the portable recording medium does not reach a predetermined frequency or a predetermined number of times. The recording / reproducing apparatus as described.   The recording / reproducing control unit deletes only the input signal recorded for the backup from the portable recording medium when the recordable capacity of the portable recording medium becomes a second predetermined capacity or less. The recording / reproducing apparatus according to claim 1, wherein the driving apparatus is controlled.   The recording / reproducing control unit is configured to read from the portable recording medium when the power of the recording / reproducing apparatus is turned off by a user or when recording during reproduction to the volatile memory is stopped by a user. The recording / reproducing apparatus according to any one of claims 1 to 10, wherein the driving device is controlled so as to erase only an input signal recorded for backup. Recording / reproducing apparatus comprising: a reproducing unit that reproduces an input signal; a recording unit that has a volatile memory and records the input signal in the volatile memory; a drive device for a portable recording medium; and a control unit A recording / reproducing method in which
The control unit causing the recording unit to record the input signal in the volatile memory while the reproduction unit reproduces the input signal;
The control unit includes the step of causing the reproduction unit to reproduce the input signal recorded in the volatile memory from an arbitrary time point according to a user operation,
A determination step of determining whether or not a recordable portable recording medium is mounted on the drive device during recording during reproduction in the volatile memory; and
If it is determined in the determination step that the controller is mounted, the control unit controls the driving device to perform backup recording on the portable recording medium;
The recording / reproducing method further comprising:

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