JP3938168B2 - Data recording / reproducing device - Google Patents

Description

  The present invention relates to a data recording / reproducing apparatus, and more particularly to a data recording / reproducing apparatus in which a data recording medium is detachable.

  A DVD (Digital Versatile Disk) recording / reproducing apparatus and other data recording / reproducing apparatuses can be loaded with a plurality of types of recording media (for example, disks). In this data recording / reproducing apparatus, there are many cases where there are restrictions on the recording media that can be used for each apparatus. Therefore, for example, when a disc on which data cannot be written is loaded in a certain device, the user knows that writing on the disc is restricted until video / audio is actually recorded on the disc. could not. On the other hand, in many cases, the instruction manual of the device includes a description regarding the restriction, but it is necessary to refer to the description every time, and the convenience of the device is not always good.

  Therefore, for example, Japanese Patent Laid-Open No. 10-228718 (Patent Document 1) discloses an optical disc apparatus capable of displaying a disc after identifying the type of the loaded disc. This device makes a laser beam incident on an optical disc, discriminates the type of the optical disc using a signal obtained from the reflected light, and displays a disc discriminating circuit for outputting a disc discrimination signal and the type of the loaded optical disc Optical disc display circuit.

According to the optical disk device disclosed in Patent Document 1, since the type of the loaded disk is displayed, erroneous operation can be prevented.
Japanese Patent Laid-Open No. 10-228718

  By the way, as an optical disk apparatus and other data recording / reproducing apparatuses, apparatuses that can be used in various modes have been proposed for data writing or reading. In this case, a medium that can be used in a specific mode can be written or read with data in an apparatus corresponding to the mode. For this reason, when a medium that can be used in a mode not supported by the apparatus is loaded into the apparatus, the user of the apparatus may not be able to use the medium.

  In such a case, according to the optical disk device disclosed in Patent Document 1, only the type of the loaded disk is displayed. To determine which mode can be used, it is necessary to refer to the use manual of the device. Therefore, user convenience is not always good.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a data recording / reproducing apparatus capable of preventing erroneous operation and improving convenience.

  In order to solve the above-described problems, according to one aspect of the present invention, a data recording / reproducing apparatus includes a drive unit to which a recording medium can be attached and detached. The recording medium stores media information indicating the type of medium and recording mode information indicating a data recording method. The data recording / reproducing apparatus further includes a storage unit for storing a program created in advance for specifying whether data can be written to and read from a recording medium mounted on the driving unit, and an input unit for receiving an instruction input from the outside. And an acquisition means for reading out the media information and the recording mode information from the recording medium attached to the driving means, and the attached recording based on the media information, the recording mode information, and the program in response to the input of the instruction. Recording data on a medium, copying data from a recording medium to another recording medium, editing data, erasing data, and appending to record new data in addition to the data recorded on the recording medium Are determined based on the result of determination by the determination means and the determination means. Comprising a mode of, and a mode of processing of the data is determined to be not possible, and generating means for generating display data for representing each a different display mode, and output means for outputting display data.

  According to another aspect of the present invention, a data recording / reproducing apparatus includes a drive unit to / from which a recording medium can be attached / detached. The recording medium stores media information indicating the type of medium and recording mode information indicating a data recording method. The data recording / reproducing apparatus further includes storage means for storing specific information for specifying whether data can be written to and read from the recording medium attached to the driving means, and media information from the recording medium attached to the driving means. And an acquisition unit for reading out the recording mode information, a determination unit for determining whether data can be written to and read from the mounted recording medium based on the media information, the recording mode information, and the specific information; A generating means for generating display data for representing the result and an output means for outputting the generated display data are provided.

  Preferably, each of the different types of recording media is detachable from the driving means.

  Preferably, the storage means stores a predetermined program for specifying whether data can be written to and read from the recording medium. The determination means determines whether data can be written to and read from the loaded recording medium by executing a program using the media information and the recording mode information.

  Preferably, the storage unit stores predetermined determination data regarding whether data can be written and read for each type of recording medium that can be mounted on the driving unit. The determination means determines whether data can be written to and read from the loaded recording medium by comparing the media information and the recording mode information with the determination data.

  Preferably, data writing and reading are recorded on the recording medium, recording data on the recording medium, copying data from the recording medium to another recording medium, editing data, deleting data, and recording on the recording medium. In addition to the existing data, additional recording for recording new data is included.

  Preferably, the data recording / reproducing apparatus further includes input means for receiving an input of an instruction from the outside. The determination means determines whether or not data can be written to and read from the recording medium based on an instruction input.

  Preferably, the data recording / reproducing apparatus further includes detection means for detecting attachment of the recording medium to the drive means. The determination means determines whether or not it is possible in response to detection of wearing.

  Preferably, the generation unit generates, as display data, data for representing the data processing mode determined to be possible and the data processing mode determined to be impossible in different display modes, respectively. To do.

  According to the data recording / reproducing apparatus of the present invention, the user can easily confirm whether data can be written to and read from the recording medium that can be attached to the apparatus, and therefore, the user's erroneous operation is prevented and the convenience is improved. Can be improved.

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

  With reference to FIG. 1, the structure of the DVD recorder 100 which concerns on embodiment of this invention is demonstrated. FIG. 1 is a block diagram showing a hardware configuration of DVD recorder 100. The DVD recorder 100 is an aspect of the data recording / reproducing apparatus according to the present invention, and is not limited to this.

  DVD recorder 100 has an operation unit 122 for receiving an instruction input from outside and outputting a signal corresponding to the instruction, and a light receiving unit 124 for receiving a remote control signal and outputting a command corresponding to the signal. The timer circuit 126 for measuring the time of the DVD recorder 100 and outputting a signal according to the time, and the display unit 128 for displaying the operation state of the DVD recorder 100 to the outside are included. Here, the state of operation represents, for example, whether the DVD recorder 100 is reproducing or recording, or whether a disc is loaded in the DVD drive device 170 as will be described later.

  The DVD recorder 100 is further connected to an antenna 190, receives a radio wave, selects a channel for which channel selection is instructed, and video data and audio data from a cable (not shown) connected to the outside. The external input unit 132 for accepting input and the broadcast radio wave video data selected by the tuner 130 or the video data input from the external input unit 132 are converted into MPEG (Moving Picture Experts Group) 2 format and output. And a system control circuit 110 for executing a predetermined process based on a signal input from the outside and data stored in advance in the inside.

  The DVD recorder 100 is further loaded with a hard disk device 140 and a data readable / writable disc, a DVD drive device 170 for writing video and audio data in a data format corresponding to the disc, and compressed in the MPEG2 format. MPEG data 154 for restoring data output from the system control circuit 110, information indicating the operation state of the DVD recorder 100 output from the system control circuit 110, and predetermined data Based on the above, an OSD (On Screen Display) image generation circuit 114 for generating an image to be displayed on the video display unit, data output from the MPEG decoder 154, and data output from the OSD image generation circuit 114 A combining circuit 158 for combining and outputting, A D / A (Digital to Analog) converter 160 that converts a digital signal output from the circuit 158 into an analog signal and a television 400 are connected to output video and audio data output from the D / A converter 160. An output unit 168.

  The hard disk device 140 includes a data recording / reproducing head 142 for recording and reproducing data and a hard disk 144 for storing data. A DVD-RAM (Random Access Memory) disk and other disks 172 are mounted on the DVD drive device 170. Here, the disk 172 includes disks such as DVD ± RW, DVD-R, and CD-RW.

  Referring again to FIG. 1, the system control circuit 110 reads media information representing the type of medium from the disk 172 mounted on the DVD drive device 170 based on data and programs stored in advance in the memory 112. A function for reading out recording mode information indicating a data recording method, and in response to an instruction inputted from the outside, based on the read out media information and recording mode information and an algorithm, Data recording, data copying from a recording medium to another recording medium, data editing, data erasing, and additional recording for recording new data in addition to data recorded on the recording medium. Based on the function of determining whether or not it is possible and the result of the determination, it is determined that the data processing mode that is determined to be possible and the mode of data processing that is not possible Realizing the function of generating display data for representing a different display mode and a mode of processing of the data.

  The system control circuit 110 further includes a demodulator for returning the signal read from the disk 172 to its original form, an error correction unit for correcting an error in the read signal, and respective identifiers. It functions as a demultiplexer for separating the video signal or audio signal based on the identifier.

  The structure of the disk 172 will be described with reference to FIG. FIG. 2 is a conceptual diagram for explaining a data area in the disk 172.

  The disk 172 includes a lead-in area 200, a data area 210, and a lead-out area 250 as areas for storing data. The lead-in area 200 includes an emboss bit recording portion and a rewritable portion. Control data is stored in the emboss bit recording portion. This control data includes, for example, data for indicating the disc type, format, recording method, and the like. The rewritable part includes, for example, an area for recording data for processing a defect on the disc.

  A data area in the disk 172 will be described with reference to FIG. FIG. 3 is a diagram conceptually showing an aspect of the data structure in data area 210.

  The data area 210 includes a file system 220. The file system 220 stores data for managing data recorded on the disk 172. This management data includes, for example, information for indicating in which mode the video is recorded. This mode includes, for example, a video mode and a VR (Video Recording) mode. The data area 210 further includes “VIDEO_TS.IFO” and other data files. The file structure in the data area 210 is not limited to the mode shown in FIG.

  With reference to FIG. 4, the control structure of DVD recorder 100 according to the present embodiment will be described. FIG. 4 is a flowchart showing a procedure of processing executed by system control circuit 110 of DVD recorder 100. This process is realized, for example, by executing a program stored in the memory 112, but can also be realized by a circuit that realizes each process.

  In step S410, system control circuit 110 detects an instruction to execute a disc determination process based on the input data. In step S420, system control circuit 110 acquires media information from lead-in area 200 of disc 172 mounted on DVD drive device 170. Here, the media information is information for indicating the type of the loaded disc.

  In step S 430, system control circuit 110 acquires recording mode information from data area 210 of disc 172. More specifically, the system control circuit 110 acquires recording mode information based on data stored in the file system 220 of the disk 172. If the information is stored in the file system 220 as it is, the information is read out. Alternatively, the information may be generated by combining a plurality of data.

  In step S440, system control circuit 110 identifies the type of disk 172 by executing a predetermined program based on the acquired media information and recording mode information. This program is configured to output media types and recording mode information as input data, and output disc types that are associated in advance according to the respective information.

  In step S450, system control circuit 110 generates screen display data based on the type of disk 172. For example, when the disk 172 is a DVD-R (Recordable) disk and the recording mode is the video mode, the system control circuit 110 represents data indicating that dubbing, editing, and additional writing are possible. Is generated. Further, the system control circuit 110 generates data for notifying that direct recording and erasure cannot be performed on this disc. The system control circuit 110 displays data for display on the screen based on the item-specific data generated in this way (for example, highlights possible operations, for example, underlines or inverts the color and displays the data). Generate). Alternatively, when the disc 172 is a DVD-R and the recording mode is the VR mode, the system control circuit 110 generates data indicating that direct recording, dubbing, editing, and additional writing are possible. To do. System control circuit 110 further generates data indicating that erasure is impossible.

  In step S460, system control circuit 110 outputs the generated screen display data to OSD image generation circuit 114. The OSD image generation circuit 114 generates data for displaying predetermined items based on a predetermined format for display on the screen, and outputs the data to the synthesis circuit 158.

  With reference to FIG. 5, the disc determination menu displayed based on the data output from DVD recorder 100 according to the present embodiment will be described. FIG. 5 is a diagram illustrating an aspect of a disc determination menu screen displayed on television 400 based on the output data.

  As shown in FIG. 5, when the disc 172 is a DVD-R and is used in the video mode, it is displayed to indicate that dubbing, editing, and appending can be operated. Further, in this case, it is displayed that recording and erasure cannot be performed directly on the disk 172.

  On the other hand, when the disc is used in the VR mode, it indicates that the disc can be directly recorded, dubbed, edited, and additionally written. Furthermore, it indicates that the disk cannot be erased. Here, in FIG. 5, an underlined mode is used as a display for indicating whether or not such an operation is possible, but other modes may be used. For example, a mode in which only valid operations are displayed with normal brightness and functions that cannot be operated may be displayed by darkening the display portion.

  An operation of DVD recorder 100 according to the present embodiment based on the above-described structure and flowchart will be described.

  When the user inserts the disc 172 into the DVD drive device 170, the DVD recorder 100 starts a process for determining the type of the disc 172 (step S410). The DVD recorder 100 acquires media information from the lead-in area 200 of the disc 172 (step S420), and further acquires recording mode information from the data area 210 (step S430). When the DVD recorder 100 executes the process of specifying the type of the disc 172 (step S440), screen display data corresponding to the specified type is generated (step S450). When the DVD recorder 100 finishes this process, the data is output (step S460), and the television 400 displays the screen.

  As described above, the DVD recorder 100 according to the present embodiment specifies the function corresponding to the disc 172 mounted on the DVD drive device 170, and distinguishes and displays valid operations and invalid operations. Generate data and output the data. As a result, a screen for individually indicating whether data can be read or written on the disk 172 is displayed on a television or other display device. Thereby, the user can easily confirm what kind of operation is possible with respect to the disc 172 mounted on the DVD recorder 100.

  In the present embodiment, the disc type determination process is performed when the disc is loaded into the DVD drive device 170, for example, but may be performed at other timings. For example, when a disc is already loaded, a predetermined button on the operation unit 122 is pressed, or a corresponding operation is performed via a remote control terminal (not shown), and further displayed on the television 400. The determination process may be executed by selecting a determination process execution menu.

<Modification>
Hereinafter, modifications of the embodiment of the present invention will be described. The DVD recorder 100 according to the present modification is different from the DVD recorder according to the above-described embodiment in that data for displaying valid operations and invalid operations for each disk is stored in advance. That is, the DVD recorder 100 stores the disc type, recording mode, and functions in the memory 112 in association with each other. The DVD recorder according to this modification has the same hardware configuration as that of the DVD recorder 100 shown in FIG. Their functions are the same. Therefore, the description of the hardware configuration and function will not be repeated.

  With reference to FIG. 6, the data structure of the DVD recorder 100 according to the present modification will be described. FIG. 6 is a diagram conceptually showing one mode of data storage in memory 112 of system control circuit 110. Therefore, the data may be stored according to other modes.

  In the area 610, media information that is the type of the disk is stored. Area 620 stores data representing the recording mode of the disc. Data for indicating whether or not the first process is valid is stored in area 630. Here, the first processing is, for example, direct recording. In area 640, data for indicating whether or not the second process is valid is stored. Here, the second processing is, for example, recording data dubbing. Area 650 stores data indicating whether or not the third process is valid. Here, the third process is data editing. Data for indicating whether or not the fourth process is valid is stored in area 660. Here, the fourth process is erasure of recorded data. Data for indicating whether or not the fifth process is valid is stored in area 670. Here, the fifth process is data addition. In area 680, data for indicating whether the sixth process is valid is stored. Here, the sixth processing is reproduction of mp3 (MPEG-1 Audio Layer-III) data. This process can be a target of the determination process when, for example, a CD (Compact Disk) is also available in the DVD recorder 100.

  Thus, by storing data according to the type of each disk in this way, the mode and function according to the type (area 610) of the disc loaded when the disc is loaded into the DVD drive device 170 are effective. Information indicating whether or not is retrieved. Based on the data thus searched, the OSD image generation circuit 114 generates data to be displayed on the screen.

  In this case, the system control circuit 110 executes a process of retrieving data from the memory 112 as described above, instead of the process shown in step S440 of FIG. In this way, the user can be easily notified of the type of disk and the effective function.

  As described above, the data recording / reproducing apparatus 100 according to the present modification also displays a screen indicating whether processing is possible regarding the execution of data writing or reading processing on the loaded disc 172. Incorrect operation can be prevented.

  As shown in FIG. 1, the DVD recorder 100 according to the present embodiment includes a hard disk device 140, but may not include such a device.

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

  The present invention can be applied to a data recording apparatus to which a recording medium can be attached and detached, for example, a DVD recorder, a CD player, and the like.

It is a block diagram showing the hardware constitutions of the DVD recorder which concerns on embodiment of this invention. It is a conceptual diagram for demonstrating the data area in the disc with which the DVD recorder which concerns on embodiment of this invention is mounted | worn. It is a figure which represents notionally one aspect | mode of the data structure in the data area of the disc with which the DVD recorder which concerns on embodiment of this invention is mounted | worn. It is a flowchart showing the procedure of the process which the DVD recorder which concerns on embodiment of this invention performs. It is a figure showing the one aspect | mode of the screen of the disc determination menu displayed based on the data output by the DVD recorder which concerns on embodiment of this invention. It is a figure which represents notionally the one aspect | mode of the data storage in the DVD recorder which concerns on the modification of embodiment of this invention.

Explanation of symbols

  100 DVD recorder, 110 system control circuit, 112 memory, 114 OSD image generation circuit, 122 operation unit, 124 light receiving unit, 126 timing circuit, 128 display unit, 130 tuner, 132 external input unit, 140 hard disk device, 142 data recording / reproduction Head, 144 hard disk, 152 MPEG encoder, 154 MPEG decoder, 158 synthesis circuit, 160 D / A converter, 168 output, 170 DVD drive, 172 disk, 190 antenna, 400 television.

Claims (9)

A drive means for detaching the recording medium;
The recording medium stores media information representing the type of medium and recording mode information representing a data recording method,
further,
Storage means for storing a program created in advance for specifying whether data can be written to and read from the recording medium attached to the driving means for each of the plurality of data recording methods;
An input means for receiving an instruction input from the outside;
An acquisition means for reading the media information and the recording mode information from a recording medium mounted on the driving means;
In response to the input of the instruction, based on the media information, the recording mode information, and the program, for each of a plurality of recording methods of the data, the data recording on the mounted recording medium, Data can be copied from the recording medium to another recording medium, data can be edited, data can be deleted, and additional data can be recorded to record new data in addition to the data recorded on the recording medium. A determination means for determining whether there is,
A data processing mode determined to be possible and a data processing mode determined not to be possible for each of the plurality of data recording modes based on the determination result by the determination unit Generating means for generating display data for representing each in a different display mode;
A data recording / reproducing apparatus comprising output means for outputting the display data. A drive means for detaching the recording medium;
The recording medium stores media information representing the type of medium and recording mode information representing a data recording method,
further,
Storage means for storing specific information for specifying whether data can be written to and read from a recording medium mounted on the driving means for each of a plurality of data recording methods;
An acquisition means for reading the media information and the recording mode information from a recording medium mounted on the driving means;
On the basis of the media information and the recording mode information and the specific information for each of the methods of recording method of a plurality of said data, determining for determining whether it is possible to whether and reading of writing data in the loaded recording medium Means,
Generating means for generating display data for representing a result of determination by the determination means for each of the plurality of data recording methods;
A data recording / reproducing apparatus comprising: output means for outputting the generated display data.   The data recording / reproducing apparatus according to claim 2, wherein each of the different types of recording media is detachable from the driving unit. The storage means stores a predetermined program for specifying whether data can be written to and read from the recording medium,
The determination unit determines whether data can be written to and read from the mounted recording medium by executing the program using the media information and the recording mode information. Item 4. The data recording / reproducing apparatus according to Item 3. The storage means stores determination data predetermined for whether data can be written and read for each type of recording medium that can be mounted on the driving means,
The determination means, by comparing the judgment data and the medium information and the recording mode information to determine whether the availability and reading of writing data in the loaded recording medium, according to claim 2 or claim 4. The data recording / reproducing apparatus according to 3.   The data writing and reading are performed by recording data on the mounted recording medium, copying data from the recording medium to another recording medium, editing data, erasing data, and recording on the recording medium. 6. The data recording / reproducing apparatus according to claim 2, further comprising additional recording for recording new data in addition to the recorded data. The data recording / reproducing apparatus further includes input means for receiving an input of an instruction from the outside,
7. The data recording / reproducing apparatus according to claim 2, wherein the determination unit determines whether each of the recording media is possible based on an input of an instruction that determines whether data can be written to or read from the recording medium. . The data recording / reproducing apparatus further includes detection means for detecting attachment of a recording medium to the driving means,
The data recording / reproducing apparatus according to claim 2, wherein the determination unit determines whether or not each of the determinations is possible in response to the detection of the attachment.   The generation means generates data as the display data to represent the data processing mode determined to be possible and the data processing mode determined to be impossible in different display modes, respectively. A data recording / reproducing apparatus according to any one of claims 2 to 8.

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