JP2004005495A - Recorder, recording method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital recorder requiring no switching of a command according to a data format of an optical disk installed in a digital recorder by a controller such as a DTV, and solving the problem of compatibility. <P>SOLUTION: This recorder 120 is a recorder for recording various data on the optical disk 372, and is provided with an optical disk drive 370 for installing the optical disk 372 and a command processing means 330 for detecting a data classification for permitting recording by the data format predetermined in the optical disk 372 installed in the optical disk drive 370, and discriminates the data classification of data acquired from an external part. When the data classification is a data classification for permitting the recording by the command processing means 330, an optical disk drive control means 360 records the data on removable media, and when the data classification is an unpermitted data classification, the data is recorded on an information storage buffer 350. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technique for supporting recording and reproduction on a removable disk of two or more different data formats by one apparatus.
[0002]
[Prior art]
A digital recorder for digitally recording AV data transmitted by digital broadcasting has been developed and sold. The digital recorder is generally used by being connected to a digital television (hereinafter, referred to as “DTV”) for receiving digital broadcasting through an IEEE1394 interface. The IEEE 1394 enables inter-device transfer of AV data or the like that requires real-time properties by an isochronous transfer method, and enables inter-device transfer of control-related data by asynchronous transfer. An AV / C command specified by the 1394 Trade Association is used to transfer data relating to this control.
[0003]
The AV / C command is a command set for the AV device to remotely control another AV device connected by IEEE1394. Here, a device that remotely controls, such as a DTV, that is, a device that transmits a command is called a controller, and a device that is remotely controlled, such as a digital recorder, that is, a device that receives a command is called a target. The commands include commands for controlling the target functions such as reproduction, recording, writing and reading of information related to AV data, etc., and commands for inquiring about the status of the target.
[0004]
Various applications are realized using the AV / C command. For example, the DTV reads information such as a title name, recording date and time, and program contents relating to each AV data from the digital recorder using an AV / C command, so that the user can select the AV data with reference to the information. This is an application in which these are shaped and displayed on a display, and when one of the displayed information is selected and operated by the user, an AV / C command for reproducing the AV data corresponding to the information is transmitted to the digital recorder. .
[0005]
Hereinafter, an example of a processing flow of this application will be described.
The DTV receives AV data transmitted through digital broadcasting, and receives information (hereinafter referred to as AV data information) related to AV data such as a title name, recording date and time, and program contents from an EPG (electronic program guide) transmitted together. .) And transfer them to the digital recorder using an AV / C command instructing them to be written.
[0006]
The digital recorder that has received the AV / C command records the transferred AV data and AV data information on a recording medium in accordance with the instruction of the AV / C command.
Subsequently, after the completion of the recording, the DTV instructs the digital recorder to read out all the AV data information held by the digital recorder from the recording medium by using an AV / C command for instructing reading, from the recording medium. .
[0007]
The digital recorder receiving this command transmits the AV data information according to the read instruction to the DTV.
The DTV that has acquired the AV data information creates a list listing title names, program contents, and the like based on the information, and displays the list on a display.
When one of the information in the list is selected by a user operation, the DTV specifies the AV data corresponding to the selected information, instructs the digital recorder to read the AV data, and as a result, transfers the AV data. Play the data on the display.
[0008]
When the recording target medium of the digital recorder is an optical disk, the data format differs depending on the type of the optical disk, and therefore, there is a compatibility problem depending on the combination of the device and the optical disk.
Here, the data format defines the type, area, and area size of AV data information to be recorded on the optical disc. For example, in the case of DVD-RAM and DVD-RW, a video coding format is applied as a data format, and in the case of DVD-R and DVD-ROM, a DVD video format is applied.
[0009]
In order to solve this compatibility problem, there has been a conventional technology that analyzes the file structure and contents of an optical disc and performs a reproduction process based on the analysis result (for example, see Patent Document 1).
[0010]
[Patent Document 1]
JP-A-2001-57026
[0011]
[Problems to be solved by the invention]
However, if the DTV and the optical disc mounted on the digital recorder have different data formats corresponding to each other, and the information defined in the DTV data format is not defined in the data format of the optical disc, the DTV transmits the AV / C command. However, there is a problem that the digital decoder cannot write the information for which recording has been instructed on the optical disc, and this problem cannot be solved by the technique of Patent Document 1. As a result of the inability to write, even if the DTV instructs the digital recorder to read the information, the DTV cannot obtain the information because it is not recorded on the optical disc, and cannot display the information on the display. Occur.
[0012]
In particular, the data format corresponding to a large-capacity optical disk developed in recent years defines various types of data that are not in the current format. Becomes remarkable. As a solution to this, a method in which the DTV identifies the format of the optical disc mounted on the digital recorder and switches the AV / C command issued to the digital recorder in accordance with the identification result is also conceivable. However, this method has a problem that the development efficiency of the application on the DTV side is inferior.
[0013]
Therefore, an object of the present invention is to provide a digital recorder that solves the above-mentioned compatibility problem without the need for a controller such as a DTV to switch commands according to the data format of an optical disc mounted on the digital recorder.
[0014]
[Means for Solving the Problems]
In order to solve the above problem, a recording device of the present invention is a recording device that records various data on a removable medium, wherein the mounting device has a removable medium mounted thereon, an obtaining device that obtains data from outside, and the mounting device. A detecting means for detecting a data type in which a data format already defined in the removable medium attached by recording permits recording, and a data type of data acquired by the acquiring means is determined. If the data type is a data type permitted to be recorded by the detection means, the data is recorded on the removable medium.If the data type is not permitted, the data is recorded on another medium that is not the removable medium. Recording means for recording.
[0015]
The recording apparatus further includes: a read instruction acquisition unit configured to acquire a read instruction of predetermined data from the outside; and, when the predetermined data according to the read instruction is recorded on the removable medium, the read instruction is acquired from the removable medium. Reading means for reading predetermined data and reading the predetermined data from the other medium and outputting the read data to the outside when the data is not recorded on the removable medium and is recorded on the other medium. May be provided.
[0016]
The recording device may further generate pseudo data as a substitute for the predetermined data when the predetermined data according to the read instruction is not recorded on any of the removable medium and the other medium. Pseudo data generating means for outputting the pseudo data to the outside.
The pseudo data generation means may be configured to generate the pseudo data using data recorded on the removable medium or the other medium.
[0017]
The recording apparatus may further include a notifying unit that outputs, to the outside, a notification signal indicating that the recording unit has executed the recording after recording on the removable medium or the other medium.
The type of the removable medium mounted on the recording device may be one or more of a DVD-RAM, a DVD-R, a DVD-ROM, and a DVD-RW.
[0018]
The recording device may be configured to exchange signals with the outside via a digital interface.
The digital interface may be one of IEEE1394, USB, and Ethernet (registered trademark).
The other medium may be any one of a flexible disk, a hard disk, an MO, and a semiconductor memory.
[0019]
The recording apparatus further includes a disk identifier obtaining unit that obtains a disk identifier of the removable medium mounted by the mounting unit when recording on the other medium by the recording unit, wherein the recording unit includes the mounting unit. May be configured to record data on the other medium in association with data of a data type that is not allowed to be recorded on the removable medium attached by the disk identifier acquired by the disk identifier acquiring means. .
[0020]
The disk identifier obtaining unit further obtains a disk identifier of the removable medium mounted by the mounting unit when reading from the other medium by the reading unit, and the reading unit performs the predetermined operation according to the read instruction. If the data is not recorded on the removable medium, the removable medium recorded on the other recording medium is searched by using the disk identifier acquired by the disk identifier acquiring means as a key, and the data corresponding to the disk identifier is searched for. When the predetermined data to be recorded is recorded on the other recording medium, the data may be read and output to the outside.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a connection example composed of a DTV and an optical disk recorder.
In FIG. 1, the DVT 110 and the optical disk recorder 120 are connected via an IEEE 1394 bus 100. The remote controller 130 receives a user operation and gives an instruction corresponding to the operation to the DTV 110.
[0022]
FIG. 2 shows a configuration example of the optical disk recorder 120.
In the figure, an optical disk recorder 120 includes an isochronous processing unit 310 for controlling isochronous transfer, an asynchronous processing unit 320 for controlling asynchronous transfer, a command processing unit 330 for performing processing for AV / C commands, and temporarily storing AV data. It comprises a data buffer 340 for storing data, an information storage buffer 350, an optical disk drive control means 360 for controlling the optical disk drive 370, and an optical disk drive 370.
[0023]
In this configuration, the information storage buffer 350 is a storage medium for recording AV data information of a data type whose predetermined data format does not permit recording on the optical disc 372 mounted on the optical disc drive 370. It is. This storage medium is, for example, a flexible disk, a hard disk, an MO, and a semiconductor memory.
[0024]
The optical disk drive 370 includes a recording and reproduction control unit 371 that controls recording and reproduction on the optical disk 372 mounted.
The type of the optical disk 372 mounted on the optical disk drive 370 is DVD-RAM, DVD-R, DVD-ROM, DVD-RW, or the like.
FIG. 3 shows a data configuration example of AV data information transferred from the DTV 110 to the optical disk recorder 120 by an AV / C command.
[0025]
In the figure, AV data information includes header information 400 indicating the overall size and the like, program management information 410 storing information on all programs (AV data), and one or more program individual information 420 storing detailed information on each program. Consists of
The individual program information 420 includes header information 430 indicating the size of the individual program information, recording date and time data 440 indicating the recording date and time of the program, title data 450 storing the title of the program, and content information data 460.
[0026]
The data stored in the program individual information 420 is not limited to this, and may store, for example, a channel name or the like. In addition, #n (where n is a natural number) is a number given for convenience to distinguish program individual information. For example, the DTV 110 can transfer only the program individual information # 1 to the optical disc recorder 120, or can transfer the entire AV data information.
[0027]
FIG. 4 shows a configuration example of the recorded program management information 500 which is a part of the data configuration defined by the data format of the optical disk 372.
The recorded program management information 500 is an area for storing information related to AV data (program), and stores a program management information table 510 for managing the entire AV data recorded on the optical disc, and information of each AV data. And a program information table 520. The program information table 520 includes header information 530 for storing information such as the size of the program information table, and one or more pieces of program information 540 in which information of each AV data is stored. Each program information 540 includes recording date / time data 550 and title data 560.
[0028]
Although not shown, the data format of the optical disk 372 defines not only the recorded program management information 500 but also the area of AV data.
The data format of the optical disk 372 shown in FIG. 4 is defined by comparing the recording date / time data 440 and title data 450 of FIG. The information data 460 is not defined. That is, this digital format allows recording date / time data and title data to be recorded on the optical disc 372, and does not permit recording of content information data.
[0029]
It should be noted that the data format of the optical disc permits recording of data of which data type and does not permit recording of data of which data type is not limited to the example of FIG.
FIG. 5 shows a configuration example of data stored in the information storage buffer when the optical disk 372 having the data format of FIG. 4 is mounted.
[0030]
The information storage buffer 350 includes header information 600 indicating the number of recorded AV data and the like, and one or more pieces of program individual information 610. Each program individual information 610 is composed of content information data 620.
Here, in FIG. 3, FIG. 4, and FIG. 5, the data having the same data name constituting the program individual information to which the same number is assigned is the same. That is, the recording date / time data 440 and title data 450 which are components of the program individual information # 1 in FIG. 3 are the same data as the recording date / time data 550 and title data 560 which are components of the program individual information # 1 in FIG. It is. The content information data 460 which is a component of the program individual information # 1 in FIG. 3 is the same as the content information data 620 which is a component of the program individual information # 1 in FIG.
[0031]
Next, recording of AV data information will be described.
FIG. 6 shows a framework of the FCP transmitted from the DTV 110 to the optical disc recorder 120.
FCP is a protocol used in AV / C commands for controlling AV devices on IEEE1394.
[0032]
FIG. 7 shows a data configuration of an AV / C command indicating a recording instruction.
In the figure, an AV / C command stores an operation code 800 indicating an instruction content (data write), auxiliary information 810 indicating capture information regarding the instruction content, a transfer length 820 indicating a size of data to be transmitted, and data. An address 830 indicating a position, an original data length 840 indicating the length of data to be overwritten, and data 850 storing data to be transmitted (in this case, AV data information).
[0033]
The AV / C command of FIG. 7 is stored and transferred in the command storage area 700 of the FCP of FIG.
Next, how the AV data information recording instruction command transferred using the data configuration of FIGS. 6 and 7 is processed in the optical disk recorder 120 will be described.
[0034]
FIG. 8 is a flowchart showing a recording process of the AV data information in the optical disc recorder 120.
The AV / C command and the AV data information transmitted from the DTV 110 are received through the asynchronous processing means 320 (Step 900).
The command processing means 330 extracts the AV / C command from the command storage area 700, interprets the operation code 800 and the like, and determines the processing content. Next, the command processing means 330 extracts the AV data information and determines whether there is an area that can be recorded on the optical disc for each of the data stored in the program individual information 420 (step 901). This determination is made by detecting a data type permitted to be recorded by a data format predetermined on the optical disc, and comparing the detected data type with the data type stored in the program individual information 420. Is
[0035]
More specifically, the command processing means 330 specifies what the data format of the optical disc is. Specifically, for example, the command processing unit 330 stores in advance characteristics unique to each data format in association with the name of the data format, and checks which characteristics the mounted optical disk has. Specified by
[0036]
As features, for example, data unique to each data format, a data length unique to each data format, a structure unique to an optical disc of each data format, a data format name recorded in each data format, and the like can be used.
Next, the command processing means 330 detects a data type whose data format permits recording. More specifically, the command processing means 330 stores in advance each data format and the name of the data type that the data format permits recording, and stores the data format corresponding to the specified data format. The name is detected by reading from the stored contents.
[0037]
Lastly, the command processing unit 330 acquires the data type of the program individual information 420, and determines whether each of the acquired data types matches the previously detected data type. As a result of this determination, data types that match are permitted to be recorded on the optical disc, and data types that do not match are not permitted to be recorded.
As a result of the determination in step 901, data having an area to be stored on the optical disk, for example, recording date and time data (Yes in step 901) is recorded on the optical disk 372 via the optical disk drive control means 360 (step 902).
[0038]
On the other hand, data having no area to be stored on the optical disk (No in Step 901) is stored in the information storage buffer 350 (Step 903). After recording or storing all of the AV data transmitted from the DTV 110, the command processing unit 330 transmits a completion notification of the AV / C command to the DTV 110 via the asynchronous processing unit 320 (Step 904).
[0039]
Thus, the transfer processing of the AV data information from the DTV 110 to the optical disk recorder 120 is completed.
Next, reading of AV data information will be described.
FIG. 9 shows a data configuration of an AV / C command indicating a read instruction.
In the figure, an AV / C command includes an operation code 1000 indicating the instruction content (data read), auxiliary information 1010 indicating supplementary information on the instruction content, a transfer length 1020 indicating the size of data to be transferred, and data to be transferred. Is composed of an address 1030 indicating the position in the AV data information in which is stored.
[0040]
The AV / C command is stored in the FCP command storage area 700 in FIG. 6 and transferred from the DTV 110 to the optical disk recorder 120 in the same manner as the recording instruction.
Next, how the command for reading the AV data information transferred using the data configuration of FIG. 9 is processed in the optical disk recorder 120 will be described.
[0041]
FIG. 10 is a flowchart showing a read instruction of the AV data information in the optical disk recorder 120.
The AV / C command transmitted from the DTV 110 is received through the asynchronous processing unit 320, and the command is analyzed by the command processing unit 330 (step 1100).
[0042]
The command processing means 330 extracts the AV / C command from the command storage area 700, interprets the operation code 1000 and the like, and determines the processing content. Next, the command processing means 330 determines whether or not each of the AV data information (recording date / time data 440, title data 450, and content information data 460) indicated by the received AV / C command is recorded on the optical disc ( Step 1101).
[0043]
This determination is made, for example, as follows. First, the command processing unit 330 specifies what the data format of the optical disk mounted on the optical disk drive 370 is. This specification may be the same as that in step 901.
Next, the command processing unit 330 detects a data type in which the data format of the mounted optical disc permits recording. This detection may be the same as that in step 901.
[0044]
Then, the command processing means determines whether or not the data type of the AV data information read and instructed by the received AV / C command matches the previously detected data type. It is determined that the data is not recorded on the optical disk if they do not match.
If the area to be stored on the optical disk is specified (Yes in step 1101), the command processing unit 330 reads out from the optical disk via the optical disk drive control unit 360 (step 1102).
[0045]
On the other hand, for data for which the area to be stored on the optical disk is not specified (No in step 1102), the data is obtained from the information storage buffer 350 (step 1103). After collecting the data specified by the AV / C command in this way, the command processing unit 330 transmits the collected AV data information and the completion notification of the AV / C command to the DTV 110 via the asynchronous processing unit 320.
[0046]
As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiments, and may be configured as follows.
(1) If data for which an area to be stored on the optical disk is not specified is not stored in the information storage buffer 350, pseudo data may be created using related information. For example, if no title name is stored, the title names may be set to “title 1”, “title 2”, “title 3”, etc. in the order of the titles using the number of titles. If the content information is not stored, the content information may be created by acquiring information from the Internet or the like and extracting only necessary information. By creating the data in a simulated manner, the data can be displayed to the user, and convenience can be provided. Thus, the transfer processing of the AV data information from the optical disk recorder 120 to the DTV 110 is completed.
[0047]
As described above, by storing data not specified in the optical disk in the information storage buffer, even if an AV / C command indicating transmission / reception of data whose area to be recorded on the optical disk is not specified is received, Processing can be completed without terminating the C command with an error. As a result, the DTV can use the same application without being conscious of the media mounted on the optical disc recorder.
(2) In the embodiment, the program content data is described as data for which the area to be recorded on the optical disk is not specified, but the data is not limited thereto. For example, title data may be used.
(3) In the embodiment, the controller is a DTV, but is not limited thereto. For example, an STB (set-top box) connected to a TV with an analog cable may be used.
(4) In the embodiment, the information storage buffer is a memory, but is not limited thereto. For example, an HDD (hard disk drive) or the like may be used, or a manufacturer-specific area or a user data area provided on the optical disk may be used.
(5) In the embodiment, data not specified in the optical disk is used as the content information data, but the present invention is not limited to this. For example, the area of the title data may not be defined, or the area of all data may not be defined.
(6) The command processing means may be provided with a function of applying the same command processing, instead of performing different command processing on a plurality of optical discs having different application formats to be mounted. In this case, the DTV is notified of one type of mounted disk regardless of its type, for example, "general-purpose recording / reproducing disk". On the other hand, for example, the user can transmit text data “DVD-RAM” from the optical disk recorder to the DTV and display the screen to check the loaded medium. As a result, it is possible to simplify the command processing without making the DTV aware of a plurality of types of discs or confusing the user, and it is possible to reduce the burden on application development.
(7) In the embodiment, the DTV and the optical disk recorder are connected to the 1394 bus, but this is not a limitation. For example, an HDD recorder may be connected. In this case, if the AV data information transmitted / received between the DTV and the HDD recorder is the same as the AV data transmitted / received between the DTV and the optical disk recorder, application development of the DTV can be facilitated.
(8) In the embodiment, the data transferred by the AV / C command is the AV data information, but this is not a limitation. For example, it may be data indicating device settings.
(9) In the embodiment, the recorder using the optical disk is used. For example, a recorder using an HDD may be used.
(10) In the embodiment, the IEEE 1394 is used as the digital interface, but the digital interface is not limited thereto. For example, USB or Ethernet (registered trademark) may be used.
(11) In the embodiment, the example is shown in which the optical disk recorder 120 performs the recording and reading processing for one optical disk, but the optical disk recorder 120 may be configured to support a plurality of optical disks.
[0048]
In this case, when recording the AV data information in the information storage buffer 350, the optical disk recorder 120 acquires the disk identifier (for example, a serial number) of the mounted optical disk 372, and stores the disk identifier and the AV data information. Are recorded in the information storage buffer 350 in association with In this manner, at the time of recording, AV data information can be recorded in the information storage buffer 350 by dividing the optical disc into a plurality of optical discs.
[0049]
When reading the AV data information, a disk identifier is obtained from the mounted optical disk 372, and the disk identifier is used to read the AV data information recorded in the information storage buffer 350 in association with the disk identifiers of the plurality of optical disks. From among them, the AV data information corresponding to the disk identifier of the mounted optical disk is specified and read.
[0050]
【The invention's effect】
A recording device of the present invention is a recording device that records various data on a removable medium, a mounting unit for mounting the removable medium, an obtaining unit for obtaining data from outside, and a removable medium mounted by the mounting unit. Detecting means for detecting a data type whose recording is permitted by a data format which has already been determined, and discriminating a data type of data acquired by the acquiring means, and the data type is recorded by the detecting means. Recording means for recording the data on the removable medium if the data type is permitted, and recording means for recording the data on another medium other than the removable medium if the data type is not permitted. It is characterized by having.
[0051]
With this configuration, when the recording device acquires all types of data defined in a data format supported by an external device (for example, a DTV) together with a recording instruction, the recording device stores any data in a removable medium or another medium. Can be recorded without missing. At the time of recording, the external device does not need to recognize which data type of the removable media attached to the recording device permits recording of which data type and which data type does not permit recording. Also, there is no need to change the recording instruction command according to the recognition.
[0052]
The recording apparatus further includes: a read instruction acquisition unit configured to acquire a read instruction of predetermined data from the outside; and, when the predetermined data according to the read instruction is recorded on the removable medium, the read instruction is acquired from the removable medium. Reading means for reading predetermined data and reading the predetermined data from the other medium and outputting the read data to the outside when the data is not recorded on the removable medium and is recorded on the other medium. May be provided.
[0053]
With this configuration, even if the recording device receives an instruction to read data of a type not defined in the data format of the removable medium from an external device, even if the data is recorded on another recording medium, Can read from it and respond to external equipment. At the time of this reading, the external device does not need to recognize the data type defined in the data format of the removable medium, and does not need to change the command of the reading instruction according to the recognition.
[0054]
The recording device may further generate pseudo data as a substitute for the predetermined data when the predetermined data according to the read instruction is not recorded on any of the removable medium and the other medium. Pseudo data generating means for outputting the pseudo data to the outside.
With this configuration, the recording apparatus can generate and respond to pseudo data even when a read instruction for data not recorded on the removable medium or another recording medium is received from the outside.
[0055]
The pseudo data generation means may be configured to generate the pseudo data using data recorded on the removable medium or the other medium. With this configuration, the pseudo data generation unit can generate pseudo data related to data recorded on a removable medium or another recording medium.
The recording apparatus may further include a notifying unit that outputs, to the outside, a notification signal indicating that the recording unit has executed the recording after recording on the removable medium or the other medium.
[0056]
The type of the removable medium mounted on the recording device may be one or more of a DVD-RAM, a DVD-R, a DVD-ROM, and a DVD-RW.
The recording device may be configured to exchange signals with the outside via a digital interface.
[0057]
The digital interface may be one of IEEE1394, USB, and Ethernet (registered trademark).
The other medium may be any one of a flexible disk, a hard disk, an MO, and a semiconductor memory.
With this configuration, the recording apparatus can record data on another recording medium by associating data with a disk identifier for each removable medium in response to the case where a plurality of removable media are replaced and detached.
[0058]
The recording apparatus further includes a disk identifier obtaining unit that obtains a disk identifier of the removable medium mounted by the mounting unit when recording on the other medium by the recording unit, wherein the recording unit includes the mounting unit. May be configured to record data on the other medium in association with data of a data type that is not allowed to be recorded on the removable medium attached by the disk identifier acquired by the disk identifier acquiring means. .
[0059]
With this configuration, even when data is recorded on another recording medium corresponding to a plurality of removable media, the recording device identifies the corresponding data from the disk identifier of the attached removable medium. Can be read out.
[Brief description of the drawings]
FIG. 1 shows a connection example including a DTV and an optical disk recorder.
FIG. 2 shows a configuration example of an optical disk recorder 120.
FIG. 3 shows a data configuration example of AV data information transferred from the DTV 110 to the optical disk recorder 120 by an AV / C command.
FIG. 4 shows a configuration example of recorded program management information 500 which is a part of a data configuration defined by a data format of an optical disk 372.
5 shows a configuration example of data stored in an information storage buffer when an optical disk 372 having the data format of FIG. 4 is mounted.
FIG. 6 shows a framework of FCP transmitted from the DTV 110 to the optical disc recorder 120.
FIG. 7 shows a data configuration of an AV / C command indicating a recording instruction.
FIG. 8 is a flowchart showing recording processing of AV data information in the optical disk recorder 120.
FIG. 9 shows a data configuration of an AV / C command indicating a read instruction.
FIG. 10 is a flowchart showing an instruction to read out AV data information in the optical disk recorder 120.
[Explanation of symbols]
100 IEEE 1394 bus
110 DTV
110 DVT
120 Recording device
120 Optical Disk Recorder
130 remote control
310 Isochronous processing means
320 Asynchronous processing means
330 Command processing means
340 data buffer
350 Information storage buffer
360 Optical disk drive control means
370 Optical Disk Drive
371 Recording / playback control means
372 optical disk

Claims (23)

A recording device for recording various data on a removable medium,
Mounting means on which the removable media is mounted,
Acquisition means for acquiring data from outside;
Detecting means for detecting a data type in which a data format already defined in the removable medium mounted by the mounting means permits recording,
The data type of the data obtained by the obtaining unit is determined, and if the data type is a data type permitted to be recorded by the detecting unit, the data is recorded on the removable medium, A recording device for recording the data on a medium other than the removable medium when the data type is not the same. The recording device further comprises:
Read instruction acquisition means for acquiring a read instruction for predetermined data from outside;
When the predetermined data according to the read instruction is recorded on the removable medium, read the predetermined data from the removable medium,
A reading unit that reads the predetermined data from the other medium and outputs the read data to the outside when the data is not recorded on the removable medium and is recorded on the other medium. The recording device according to claim 1. The recording device further comprises:
When the predetermined data according to the read instruction is not recorded on any of the removable medium and the other medium, pseudo data for generating pseudo data to substitute for the predetermined data and outputting the pseudo data to the outside 3. The recording apparatus according to claim 2, further comprising a generation unit. The recording apparatus according to claim 3, wherein the pseudo data generation unit generates the pseudo data using data recorded on the removable medium or the other medium. The recording device further comprises:
The recording apparatus according to claim 2, further comprising: a notifying unit that outputs, to the outside, a notification signal indicating that the recording has been performed after the recording unit has recorded on the removable medium or the other medium. 3. The recording apparatus according to claim 2, wherein the type of the removable medium mounted on the recording apparatus is one or more of a DVD-RAM, a DVD-R, a DVD-ROM, and a DVD-RW. . 3. The recording apparatus according to claim 2, wherein the recording apparatus exchanges signals with an external device via a digital interface. The recording apparatus according to claim 7, wherein the digital interface is one of IEEE1394, USB, and Ethernet (registered trademark). The recording apparatus according to claim 2, wherein the other medium is any one of a flexible disk, a hard disk, an MO, and a semiconductor memory. The recording device further comprises:
When recording on the other medium by the recording means, comprises a disk identifier obtaining means for obtaining a disk identifier of the removable medium mounted by the mounting means,
The recording means,
Data of a data type that is not allowed to be recorded on the removable medium mounted by the mounting means is recorded on the other medium in association with the disk identifier acquired by the disk identifier acquiring means. The recording apparatus according to claim 2, wherein The disk identifier obtaining unit further obtains a disk identifier of a removable medium mounted by the mounting unit when reading from the other medium by the reading unit,
The reading means,
If the predetermined data according to the read instruction is not recorded on the removable medium, the removable medium recorded on the other recording medium is searched using the disk identifier acquired by the disk identifier acquiring unit as a key. 11. The recording apparatus according to claim 10, wherein when the predetermined data corresponding to the disc identifier is recorded on the other recording medium, the data is read and output to the outside. A recording method for recording various data on a removable medium,
A mounting step in which the removable media is mounted,
An acquisition step for acquiring data from outside;
A detecting step of detecting a data type in which a data format already defined in the removable medium mounted by the mounting step permits recording,
The data type of the data acquired in the acquiring step is determined, and if the data type is a data type permitted to be recorded in the detecting step, the data is recorded on the removable medium and the data type is recorded. A recording method for recording the data on a medium other than the removable medium when the data type does not exist. The recording method further comprises:
A read instruction obtaining step of obtaining a read instruction of predetermined data from outside,
When the predetermined data according to the read instruction is recorded on the removable medium, read the predetermined data from the removable medium,
A step of reading the predetermined data from the other medium and outputting the read data to the outside when the data is not recorded on the removable medium and is recorded on the other medium. The recording method according to claim 12. The recording method further comprises:
When the predetermined data according to the read instruction is not recorded on any of the removable medium and the other medium, pseudo data for generating pseudo data to substitute for the predetermined data and outputting the pseudo data to the outside 14. The recording method according to claim 13, further comprising a generating step. 15. The recording method according to claim 14, wherein in the pseudo data generation step, the pseudo data is generated using data recorded on the removable medium or the other medium. The recording method further comprises:
When recording on the other medium by the recording step, comprises a disk identifier obtaining step of obtaining a disk identifier of the removable medium mounted in the mounting step,
The recording step includes:
The data of the data type that is not allowed to be recorded on the removable medium mounted in the mounting step is recorded on the other medium in association with the disk identifier obtained in the disk identifier obtaining step. 14. The recording method according to claim 13, wherein: The disk identifier obtaining step further obtains a disk identifier of the removable medium mounted in the mounting step when reading from the other medium in the reading step,
The reading step includes:
If the predetermined data according to the read instruction is not recorded on the removable medium, the removable medium recorded on the other recording medium is searched using the disk identifier acquired in the disk identifier acquiring step as a key. 17. The recording method according to claim 16, wherein when the predetermined data corresponding to the disc identifier is recorded on the another recording medium, the data is read and output to the outside. A program for recording various data on a removable medium, the program being stored in a computer,
A mounting step in which the removable media is mounted,
An acquisition step for acquiring data from outside;
A detecting step of detecting a data type in which a data format already defined in the removable medium mounted by the mounting step permits recording,
The data type of the data acquired in the acquiring step is determined, and if the data type is a data type permitted to be recorded in the detecting step, the data is recorded on the removable medium and the data type is recorded. If the data type does not exist, a recording step of recording the data on another medium other than the removable medium is executed. The program further comprises:
A read instruction obtaining step of obtaining a read instruction of predetermined data from outside,
When the predetermined data according to the read instruction is recorded on the removable medium, read the predetermined data from the removable medium,
A step of reading the predetermined data from the other medium and outputting the read data to the outside when the data is not recorded on the removable medium and is recorded on the other medium. The program according to claim 18. The program further comprises:
When the predetermined data according to the read instruction is not recorded on any of the removable medium and the other medium, pseudo data for generating pseudo data to substitute for the predetermined data and outputting the pseudo data to the outside 20. The program according to claim 19, further comprising a generating step. 21. The program according to claim 20, wherein in the pseudo data generation step, the pseudo data is generated using data recorded on the removable medium or the other medium. The program further comprises:
Upon recording on the other medium by the recording step, including a disk identifier obtaining step of obtaining a disk identifier of the removable medium mounted by the mounting step,
The recording step includes:
The data of the data type that is not allowed to be recorded on the removable medium mounted in the mounting step is recorded on the other medium in association with the disk identifier obtained in the disk identifier obtaining step. The program according to claim 19, wherein: The disk identifier obtaining step further obtains a disk identifier of the removable medium mounted in the mounting step when reading from the other medium in the reading step,
The reading step includes:
If the predetermined data according to the read instruction is not recorded on the removable medium, the removable medium recorded on the other recording medium is searched using the disk identifier acquired in the disk identifier acquiring step as a key. 23. The program according to claim 22, wherein when the predetermined data corresponding to the disc identifier is recorded on the other recording medium, the data is read and output to the outside.

Images