JP2006293781A - Recording and reproducing apparatus, information processor, and information processing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allows an eject operation to be performed even when a hang-up or forcible termination of an application occurs during a lock state of a recording and reproducing apparatus after the start of a copy operation from an information processor to the recording and reproducing apparatus. <P>SOLUTION: While communication is performed between the recording and reproducing apparatus and the information processor to write information to an external recording medium on the recording and reproducing apparatus side, an indication command which putting the external recording medium into a removable state is transmitted from the information processor to the recording and reproducing apparatus before the occurrence of a hang-up or forcible termination on the information processor side, to release a lock state of the external recording medium. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording / reproducing apparatus, an information processing apparatus, and an information processing system, and more particularly to an open / close state of a disk drive in data transmission when a data communication apparatus having a recording control unit and a communication control unit is connected to a network.

  When copying data recorded by an imaging device such as a digital camera or digital video camera, the data is transferred to, for example, a personal computer (abbreviated as a personal computer or a PC for short) and temporarily stored in a large-capacity recording device on the personal computer side. The data is stored in Then, after replacing the recording medium in the imaging apparatus with a new recording medium, the data temporarily stored in the large-capacity recording apparatus on the personal computer side is written to the recording medium to create duplicate data Is generally done. A technique for copying data recorded on an optical disk to a personal computer and then recording the data on a new optical disk is proposed in Patent Document 1, for example.

  By the way, when trying to copy data by such a method, if a digital camera or a digital video camera is used, a digital interface such as USB (universal serial bus) or IEEE1394 (Institute of Electrical and Wireless) is used. The data on the recording medium is transferred to the large-capacity recording device on the personal computer side with a high-speed serial interface such as Electronics Engineers), and the data recorded on the large-capacity recording device on the personal computer side is again connected to the same digital camera via the digital interface. Alternatively, the data is transferred to the digital video camera.

  FIG. 6 shows a state in which a digital video camera 101 using a random access medium 102 as a recording medium and a personal computer 103 are connected by a USB interface 104. In this state, the personal computer 103 operates as a USB host, and the digital video camera 101 operates as a USB device.

  When a USB host acquires data from a USB device via a USB interface, for example, “Universal Serial Bus Still Image Capture Device Definition Revision 1.0 July 11,2000” (hereinafter PTP) or “Universal Serial Bus Mass Storage” In general, communication is performed according to standards such as Class Bulk-Only Transport Revision 1.0 September 31, 1999 "(hereinafter, mass storage).

  In the example of FIG. 6, communication is performed in accordance with the latter mass storage. When the personal computer 103 detects the connection of the USB interface 104, the personal computer 103 acquires device information called a descriptor.

  FIG. 7 shows a configuration example of the descriptor. In a device conforming to mass storage, the configuration descriptor 202 and the interface descriptor 203 are continued under the device descriptor 201, and the OUT direction for bulk transfer (data is sent to the device under the interface descriptor 203). It is common to have a first endpoint descriptor 204 in the direction) and a second endpoint descriptor 205 in the IN direction for bulk transfer (the direction in which data is sent from the device).

As shown in FIG. 8, the configuration of the device descriptor 201 indicates USB version information, vendor ID, product ID, and the like.
Further, as shown in FIG. 9, the configuration descriptor 202 indicates the number of interfaces, power supply attribute information, and the like.
Further, as shown in FIG. 10, in the interface descriptor 203, an interface number, an interface class (08h in the case of mass storage), an interface subclass (02h in the case of using an ATAPI command), and a SCSI command are used. 06h), interface protocol (50h for BULK ONLY TRANSPROT) is defined.

  The endpoint descriptors 205 and 204 show a bulk IN endpoint in FIG. 11, and a bulk OUT endpoint in FIG.

  BEndpointAddress 700 shown in FIG. 12 indicates an endpoint in the IN direction when the first bit is “1”, and indicates an endpoint in the OUT direction when it is “0”. The lower 1 byte indicates the endpoint number.

  The endpoint number is a number uniquely added to each endpoint. In addition, the endpoint descriptor indicates the type of the endpoint with bmAttribute 701. There are four types of end points: control transfer, synchronous communication, asynchronous communication, and interrupt. Mass storage uses a bulk endpoint (02h) for asynchronous communication.

A flow of acquiring the descriptor information described above will be described with reference to FIG.
As shown in FIG. 13, the Get_Descriptor command Device is designated and transmitted from the personal computer to the imaging device (step S001).

  Upon receiving the Get_Descriptor Device, the digital video camera returns device descriptor information to the personal computer (step S002). Similarly, the personal computer issues a command to the digital video camera by specifying Length in the configuration of Get_Descriptor as the length of the configuration descriptor (step S003), and acquires configuration descriptor information (step S004).

  The personal computer knows the total descriptor data length from wTotalLength (400 in FIG. 9) of the acquired configuration descriptor, and acquires this descriptor by setting this value in the Get_Descriptor configuration (step S005). The digital video camera that has received the command returns all the descriptors (step S006).

  The personal computer that has acquired all the descriptors sets the configuration by issuing a Set_Configuration command to the digital video camera. As described above, the connection destination digital video camera is recognized, and the optimum driver for the connection destination device is loaded on the basis of the protocol to be used and the information of the endpoint to be used. After loading the driver, it communicates according to the mass storage protocol.

  FIG. 14 shows a protocol flow in mass storage. A personal computer uses a bulk OUT endpoint to send data to a digital video camera in a packet called Command Block Wrapper (CBW).

FIG. 15 shows the configuration of CBW. By using ATAPI or SCSI command in the CBCWC field in FIG. 15, communication using ATAPI command or SCSI command is performed. The specific contents of ATAPI and SCSI are
"Advanced Technology Attachment Packet Interface for CD-ROMs.SFF-8020i",
"Reduced block Commands (RBC), T10 / 1240-D",
"Multi-Media Command Set2 (MMC-2)",
"SCSI Primary Commands-2 (S PC-2), Revision 3 or later",
It is described in.

  Following the CBW, if there is data to be transmitted from the personal computer, the data is transmitted using the bulk OUT endpoint (step S102). After the data is transmitted, Status Transport Wrapper (CSW) from the digital video camera is received. The configuration of CSW is shown in FIG. In the BCSWStatus field, if the command is successful, 00h is returned, and if the command fails, 01h is returned. If there is data to be received from the digital video camera, the data is received from the bulk IN end point (step S103). Thereafter, as described above, the success or failure of the command is determined by CSW (step S104).

  FIG. 17 is a diagram illustrating an example of an application installed in the personal computer 103 when creating a copy. This application is an application that reads data from an external device and records and saves the data in an arbitrary recording medium. The user activates the data storage application 1201 after connecting the digital video camera 101 to the personal computer 103.

  After the activation, a list of video data recorded on the recording medium of the digital video camera 101 is displayed in the display area 1203, and the first title bar 1202 indicates that these data are in the recording medium of the digital video camera 101. Show.

  A second title bar 1204 indicates a recording device that is a recording destination. In this state, the recording destination indicates the digital video camera 101 that is the reading source. When the user presses the copy button 1206, the application issues an ATAPI PREVENT / ALLOW MEDIUM REMOVAL command shown in FIG. 18 to the digital video camera 101 to lock the drive tray of the digital video camera 101. Thus, the disc cannot be ejected. The explanation regarding the PREVENT / ALLOW MEDIUM REMOVAL command will be described later.

  When all the data in the recording medium of the digital video camera 101 is temporarily recorded in the designated folder of the recording medium of the personal computer 103 and the data recording is completed, the personal computer 103 sends a PREVENT / ALLOW MEDIUM REMOVAL command to the digital video camera 101. To unlock the drive tray.

  As a result, the tray lock in the digital video camera 101 is released and the recording medium 102 of the digital video camera 101 is replaced with a writable recording medium, and then the tray is locked by the PREVENT / ALLOW MEDIUM REMOVAL command. Data temporarily recorded on the recording medium is transmitted to the digital video camera 101.

  The digital video camera 101 that has received the data performs data recording on the recording medium 102. When the data writing is completed, the tray is unlocked by the PREVENT / ALLOW MEDIUM REMOVAL command.

  Returning to this application example, when the copy button 1206 is actually pressed, the data storage application 1201 accesses the USB driver and the mass storage driver of the personal computer 103 to start reading data in accordance with the mass storage. . Here, the operation sequence of mass storage is as described above.

  In this example, a command block is generated according to a command set (subclass 0x02) of ATAPI (the above-mentioned “Multi-Media Command Set 2 (MMC-2)”, hereinafter unified by ATAPI), and the personal computer 103 is connected to the digital video camera 101. In response to this, the command is transmitted by the Command Block.

  The PREVENT / ALLOW MEDIUM REMOVAL command in FIG. 18 is a command for locking and unlocking the drive. If the Prevent bit of 1302 is 1, it becomes a drive lock command, and if the Prevent bit is 0, it becomes a drive unlock command. Reference numeral 1301 denotes an operation code.

JP 2003-22607 A

  When the communication between the personal computer 103 and the digital video camera 101 is performed by the above procedure, the personal computer 103 may hang up or the application may be forcibly terminated for some reason. If a hang-up or forced termination of the application occurs, the digital video camera 101 remains locked, and not only the copy operation is not performed, but also the disk can be replaced by pressing the eject button of the digital video camera 101. There was a problem that could not be done.

  In view of the above-described problems, the present invention causes a personal computer to hang up or forcibly terminate an application while the copying operation from the information processing apparatus to the recording / reproducing apparatus is started and the recording / reproducing apparatus is locked. Even so, the purpose is to enable the ejection operation.

  The recording / reproducing apparatus of the present invention includes a communication unit that communicates with an information processing apparatus connected via a line, an instruction to determine whether or not to remove a recording medium sent from the information processing apparatus via the communication unit, and a constant An operation control means for controlling the operation of each unit to execute a predetermined command transmitted at intervals, a recording / reproducing means for recording / reproducing a removable recording medium according to the control of the operation control means, and the communication means. And an elapsed time determining means for determining whether or not a predetermined time has elapsed since the predetermined command is transmitted from the information processing device, and the predetermined command is transmitted from the information processing device as a result of the determination of the elapsed time determination. And a take-out control means for making the recording medium ready to be taken out after a predetermined time has elapsed.

  An information processing apparatus according to the present invention includes a communication unit that communicates with a recording / reproducing apparatus having a plurality of operation modes connected via a line, and a recording medium that is attached to the recording / reproducing apparatus via the communication unit. A predetermined event is executed when a recording medium is mounted on the recording / reproducing apparatus and the recording / reproducing apparatus is in an operation mode in which data can be transferred. Event execution means, and event execution determination means for determining whether an event by the event execution means is being executed. As a result of the determination by the event execution determination means, an event is executed by the event execution means. When the recording medium is read, an instruction command is transmitted to the recording / reproducing apparatus from the removal permission / inhibition instructing unit so that the recording medium cannot be removed. And when the event being performed by the event execution means ends, an instruction command is transmitted from the take-out enable / disable instruction means to the recording / reproducing apparatus so that the recording medium can be taken out. Features.

  An information processing system according to the present invention includes any one of the recording / reproducing apparatuses described above and any one of the information processing apparatuses described above.

  The recording / reproducing apparatus control method of the present invention is attached to the recording / reproducing apparatus via a communication step of communicating with a recording / reproducing apparatus having a plurality of operation modes connected via a line, and the communication step. A predetermined event when a recording medium is mounted in the recording / reproducing apparatus and the recording / reproducing apparatus is in an operation mode capable of transferring data, and a step of instructing whether or not the recording medium can be ejected; And an event execution determination step for determining whether or not an event by the event execution step is being executed. As a result of the determination in the event execution determination step, the event execution step When an event is being performed, an instruction command is transmitted to the recording / reproducing apparatus from the removal permission / inhibition instruction step to remove the recording medium. When the event being performed by the event execution step ends, an instruction command is transmitted from the removal permission / inhibition instruction step to the recording / reproducing device, and the recording medium can be removed. It is characterized by making it.

  An information processing apparatus control method according to the present invention includes: a communication step of communicating with a recording / reproducing device connected via a line via a communication unit; and a recording medium attached to the recording / reproducing device in the communication step. A removal permission / instruction step for instructing whether or not removal is possible; an event execution step for executing a predetermined event in a state where a recording medium is mounted on the recording / reproducing apparatus; and whether an event by the event execution step is being executed. An event execution determination step for determining whether or not the event execution determination process results in the recording / playback apparatus from the take-out availability instruction step when the event being executed by the event execution step ends. An instruction command is transmitted to the recording / reproducing apparatus so that the recording medium can be taken out.

A computer program according to the present invention includes a communication step of communicating with an information processing apparatus connected via a line via a communication unit, and a command for determining whether or not to remove a recording medium sent from the information processing apparatus in the communication step. And an operation control step for controlling the operation of each unit so as to execute a predetermined command transmitted at regular intervals, a recording / reproduction step for recording / reproducing a removable recording medium according to the control of the operation control step, and the communication An elapsed time determining step for determining whether a predetermined time has elapsed since the predetermined command is transmitted from the information processing device in the process; and, as a result of the determination of the elapsed time determination, the predetermined command is transmitted from the information processing device. And a control method for controlling the recording / reproducing apparatus, wherein the recording medium is made in a state in which the recording medium can be taken out after a predetermined time has elapsed And characterized by causing a computer to execute the.
Further, the computer program of the present invention is characterized in that a communication step of communicating with a recording / reproducing device having a plurality of operation modes connected via a line, and the recording / reproducing device via the communication step An instruction mode for instructing whether or not the recording medium mounted on the recording medium can be removed, and an operation mode in which the recording / reproducing apparatus is capable of transferring data, with the recording medium being mounted on the recording / reproducing apparatus. An event execution step for executing a predetermined event at a time, and an event execution determination step for determining whether an event by the event execution step is being executed, as a result of the determination in the event execution determination step, When an event is performed in the event execution step, an instruction command is sent from the take-out permission / instruction step to the recording / reproducing device The recording medium is made unusable, and when the event being performed by the event execution step ends, an instruction command is sent from the takeout permission / inhibition step to the recording / reproducing device, It is characterized by causing a computer to execute a control method of an information processing apparatus that makes a recording medium ready to be taken out.

  The recording medium of the present invention records the computer program described above.

  According to the present invention, when data is transmitted from the information processing apparatus to the recording / reproducing apparatus and the operation of the recording / reproducing apparatus is locked while copying the data to the recording medium of the information processing apparatus, the hang-up is performed. Since the locked state of the recording / playback device is released before the forced termination of the application or the application is terminated, the ejecting operation of the recording / playback device can be performed because the hangup or the forced termination of the application has occurred. It can be prevented from disappearing. This allows the user to open the drive tray and replace the media.

(First embodiment)
Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a configuration example of a data transmission system according to the present invention. In this example, the digital video camera 1501 records data shot using an optical disk 1502 such as a DVD-RAM (8 cm) as a recording medium.

  On the other hand, the personal computer 1504 has a large-capacity hard disk as a recording medium. The digital video camera 1501 and the personal computer 1504 realize data transmission by connecting the USB cable 1503 to the USB interface of each. Also in this embodiment, a case where mass storage is used as the USB transmission protocol will be described. In this embodiment, a USB cable is used for the purpose of transferring the data recorded on the optical disc 1502 to the hard disk of the personal computer 1504 and receiving the data recorded on the hard disk.

  FIG. 2 is a main block diagram relating to transfer of imaging data (image file) stored on the optical disc 1502 in the digital video camera 1501 according to the present embodiment to the personal computer 1504. Since it is a digital video camera, it has a configuration relating to imaging, AE, AF control, and encoding, but it should be noted that these configurations are omitted in the drawing. In addition, the digital video camera 1501 has, as its operation mode, a shooting mode (a mode for recording image data obtained by imaging on a recording medium attached) and a reproduction mode (an image file recorded on the attached recording medium). Mode), data transfer mode (reproducing an image file recorded on the attached recording medium and transmitting it to an external device via a communication line, recording an image file input via a communication line on the recording medium, etc. In the following, a description will be given of a data transfer mode in which each component of FIG. 2 and its function are executed.

The main control unit 1401 is connected to each component via a bus 1400, and issues a control instruction for each component by software operating on the main control unit 1401.
When the communication control unit 1402 is connected to an external device, that is, the personal computer 1504 in FIG. 1 via the USB device connector 1408 with the USB cable 1503, the communication control unit 1402 performs communication control according to the mass storage standard described above.

  The input operation control unit 1404 determines key information when the user inputs an input key of the digital video camera 1501 and notifies the software operating on the main control unit 1401.

A display control unit 1406 generates a video to be displayed on the display unit 1407 of the digital video camera 1501 and controls the display.
The recording / playback control unit 1405 controls the optical disc 1502 to record and play back the captured data and transfer the read data to the internal memory 1403. The read data is transmitted to the outside via the communication control unit 1402 or transferred to the display unit via the display control unit 1406.
The drive control unit 1409 performs control such as taking out the optical disc 1502, loading, unloading, and locking / unlocking the eject.

Next, a block diagram of a main part of the personal computer 1504 is shown in FIG. As shown in FIG. 3, an input operation for inputting from a main control unit (configured by a CPU) 1601 that controls the entire apparatus, a pointing device such as a mouse (registered trademark), and an input device 1605 configured by a keyboard. Video to the control unit 1604, the communication control unit 1602 having the USB host connector 1606, the internal memory 1603 used for loading an OS and various applications and used as a buffer area, a display unit 1609 including a CRT, a liquid crystal display, and the like A display control unit 1608 is provided that outputs a signal or draws an internal video memory in response to a request from the main control unit 1601. Also provided is an OS and a hard disk drive (HDD) 1607 that stores an application program for performing main processing in the present embodiment.
Heretofore, the configurations of the digital video camera 1501 and the personal computer 1504 in the embodiment have been described. Next, processing in the embodiment will be described.

<Description of application program>
FIG. 4 shows the flow of implementation of the application program in the present embodiment.
When the application program starts, in step S1701, the connection status of the digital video camera 1501 is confirmed based on information sent from the communication control unit 1602 to the main control unit 1601.

  If the result of this confirmation is that the digital video camera 1501 has just been connected, information on the digital video camera 1501 is acquired. If the digital video camera 1501 is not connected as a result of the confirmation, the digital video camera 1501 is detected in step S1701 until confirmation. If the digital video camera 1501 is connected, the process proceeds to step S1702.

  In step S1702, it is determined whether an end command has been issued. The termination command here is, for example, a forced termination command from the operating system (OS) operating in the main control unit 1601 or an application termination command input by the user from the input key of the digital video camera 1501. If it is determined that there is no end instruction, the process proceeds to step S1703 to determine whether there is an event currently being executed.

  In step S1703, it is determined whether or not there is an event being executed. The event referred to here is, for example, data transmission / reception between the digital video camera 1501 and the personal computer 1504, or digital video from the personal computer 1504. This refers to a disk format command, a disk finalize command, and the like for the camera 1501.

  If it is determined in step S1703 that the event is being executed, the process transitions to step S1706. In step S1706, processing according to events such as data transmission / reception, formatting, finalization, etc. is executed, and the process returns to step S1701 again to check whether the digital video camera 1501 is connected.

  On the other hand, if it is determined in step S1703 that the event is not being executed, the process proceeds to step S1704. In step S1704, the user inputs an event command such as a copy start, a format start, or a finalize start that needs to lock the drive tray to the input device 1605, and further performs main control via the input operation control unit 1604. Notified to the unit 1601 and acquired by the application.

  Here, if the acquired event information is event information such as copy start, format start, finalization start, etc., in order to set the drive of the digital video camera 1501 to the eject lock state in step S1707, the ATAPI PREVENT / The Prevent bit (1302) of the ALLOW MEDIUM REMOVAL command is set to 1 and transmitted to the digital video camera 1501, and the process returns to step S1701. Note that the internal memory 1603 stores the drive lock state of the digital video camera 1501 and event information being executed.

  If it is determined in step S1704 that there is no event that requires the drive to be locked, the process proceeds to step S1705, where it is determined whether an event such as data transmission / reception, formatting, or finalization has ended. As a result of this determination, if the event ends, the process proceeds to step S1708, and the Prevent bit (1302) of the ATAPI PREVENT / ALLOW MEDIUM REMOVAL command is set to 0 in order to release the eject lock of the drive of the video camera 1501. Is transmitted to the digital video camera 1501 and the process returns to step S1701. Note that information about the lock state of the drive of the digital video camera 1501 is stored in the internal memory 1603.

  If there is no event in step S1705, the process advances to step S1709 to transmit, for example, an ATAPI GET EVENT STATUS NOTIFICATION command in order to acquire the state of the digital video camera 1501. Although the GET EVENT STATUS NOTIFICATION command is used here, any command including a vendor command may be used. Since GET EVENT STATUS NOTIFICATION is a command defined in the ATAPI standard, a description thereof is omitted here. After transmitting the command, the process returns to step S1701.

  Here, in step S1702, a forced termination command from the OS operating in the main control unit or a user's selection from the input device 1605 is sent to the main control unit 1601 via the input operation control unit 1604. If the application receives an application end command, the process proceeds to step S1710. If the current format or finalization is being performed according to the event state held in the internal memory 1603, the process ends and the application is terminated. finish.

  On the other hand, if the event held in the internal memory 1603 is writing or reading other than formatting and finalizing, the process proceeds to step S1711 and the digital video camera 1501 stored in the internal memory 1603 stores the event. If it is determined from the drive status information that the drive status is locked, the process further proceeds to step S1712. If the drive status is not locked, the application is terminated.

  In step S1712, in order to release the eject lock of the drive of the video camera 1501, the Prevent bit (1302) of the ATAPI PREVENT / ALLOW MEDIUM REMOVAL command is set to “0”, and the application is transmitted to the digital video camera 1501. Terminate.

  In this embodiment, the drive state of the digital video camera 1501 is determined. However, when step S1710 is omitted and the process proceeds to step S1711 and the process ends, the Prevent bit of the ATAPI PREVENT / ALLOW MEDIUM REMOVAL command is always used. (1302) may be set to 0 and transmitted to the digital video camera 1501 to unlock the drive of the digital video camera 1501.

<Description of digital video camera>
The flow of implementation of the digital video camera 1501 in this embodiment will be described with reference to FIG.
In step S1801, the main control unit 1401 determines connection information sent from the communication control unit 1402 as to whether or not the personal computer 1504 is connected to the USB cable 1503.

  As a result of the determination, if the personal computer 1504 is connected, the process proceeds to step S1802. If the personal computer 1504 is not connected, the process waits until the personal computer 1504 is connected. Note that configuration values are exchanged with the personal computer 1504 at the time of connection, but since the outline has already been described above, the description is omitted here.

  When connected to the personal computer 1504 via the USB cable 1503 and transiting to step S1802, the system waits to receive an ATAPI command defined by the mass storage class CBW. If it is determined in step S1802 that a command has not been issued even after a certain period of time has elapsed, it is determined that the application of the personal computer 1504 to be connected is not operating, and the flow advances to step S1808.

  In step S1808, the drive control unit 1409 is inquired as to whether or not the current drive state is a locked state. If the drive status is locked, the process advances to step S1809 to determine whether an event such as formatting, finalizing, or data writing has occurred. As a result of the determination, if an event has not occurred, the process proceeds to step S1810. If an event has occurred, the process returns to step S1801.

  In step S1810, the main control unit 1401 sends a drive unlock release command to the drive control unit 1409. If the drive state is not locked, the process returns to step S1801.

  On the other hand, if an ATAPI command is received within a predetermined time in step S1802, the process proceeds to step S1803 to determine the command. This command is discriminated based on Operation Code 1301, and if it is 0x1E, it can be judged that it is a Prevent / Allow Medium Removal command.

  If it is determined that the command is a Prevent / Allow Medium Removal command, the process proceeds to step S1804, and the drive control unit 1409 is inquired as to whether the drive is in the locked state. As a result of this inquiry, if the drive is in the locked state, the process proceeds to step S1805, where the drive control unit 1409 is locked. If the drive is not in the locked state, the process proceeds to step S1806 to control the drive. The drive unlock command is executed to the unit 1409, and the process returns to step S1801.

  On the other hand, as a result of the determination in step S1803, if it is determined by Operation Code 1301 that the command is not a Prevent / Allow Medium Removal command, processing corresponding to each command is executed, and the process returns to step S1801. Here, description of the processing of each command is omitted.

  As described above, according to the present embodiment, the problem that the drive is locked in the disk copy function can be solved, and a user-friendly device can be provided.

(Another embodiment according to the present invention)
Each step of the recording / reproducing apparatus, the information processing apparatus, the control method of the recording / reproducing apparatus, and the control method of the information processing apparatus in the embodiment of the present invention described above is stored in a RAM or a ROM of a computer. It can be realized by running the program. This program and a computer-readable recording medium on which the program is recorded are included in the present invention.

  In addition, the present invention can be implemented as a system, apparatus, method, program, storage medium, or the like, and can be applied to a system composed of a plurality of devices. Moreover, you may apply to the apparatus which consists of one apparatus.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 4 and 5) for realizing the functions of the above-described embodiments is directly or remotely supplied to the system or apparatus. And the case where the computer of the system or apparatus also achieves by reading and executing the supplied program code.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, or the like.

  As a recording medium for supplying the program, for example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card ROM, DVD (DVD-ROM, DVD-R) and the like.

  As another program supply method, a client computer browser is used to connect to an Internet homepage, and the computer program itself of the present invention or a compressed file including an automatic installation function is downloaded from the homepage to a recording medium such as a hard disk. Can also be supplied.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  In addition, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer based on the instructions of the program is used for the actual processing. The functions of the above-described embodiment can be realized by performing some or all of the processes.

  Furthermore, after the program read from the recording medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion board or The CPU or the like provided in the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a figure which shows embodiment of this invention and shows the structure of a data transmission system. FIG. 2 is a block diagram illustrating the configuration of the first device according to the embodiment of this invention. FIG. 10 is a block diagram illustrating the configuration of a second device according to the embodiment of this invention. It is a flowchart which shows embodiment of this invention and shows the processing procedure of the program of a personal computer. 5 is a flowchart illustrating a processing procedure of the digital video camera according to the embodiment of the present invention. It is a figure which shows an example of the state which connected the digital camera and the digital video camera with the personal computer. It is a figure which shows an example of a structure of the descriptor at the time of mounting a USB mass storage class. It is a figure which shows an example of the device descriptor at the time of using a USB mass storage class. It is a figure which shows an example of the configuration descriptor at the time of using a USB mass storage class. It is a figure which shows an example of the interface descriptor at the time of using a USB mass storage class. It is a figure which shows an example of the bulk-in endpoint descriptor at the time of using a USB mass storage class. It is a figure which shows an example of the bulk-out endpoint descriptor at the time of using a USB mass storage class. It is a figure which shows an example of exchange of the descriptor information of a personal computer and an imaging device. It is a figure explaining the flow of the protocol of a mass storage class. It is a figure explaining the structure of CBW of a mass storage class. It is a figure explaining the structure of CSW of a mass storage class. It is a figure explaining the example of a copy application performed on a personal computer. It is a figure explaining the composition of ATAPI PERVENT / ALLOW MEDIUM REMOVAL command.

Explanation of symbols

1501 Digital video camera 1502 Optical disk 1503 USB cable 1504 Personal computer 1400 Bus 1401 Main control unit 1402 Communication control unit 1403 Internal memory 1404 Input operation control unit 1405 Recording / playback control unit 1405 Recording / playback control unit 1406 Display control unit 1407 Display unit 1408 USB device connector 1409 Drive control unit

Claims (13)

A communication means for communicating with an information processing apparatus connected via a line;
An operation control means for controlling the operation of each unit so as to execute an instruction to determine whether or not to take out the recording medium sent from the information processing apparatus via the communication means, and a predetermined instruction transmitted at a constant interval;
Recording and reproducing means for recording and reproducing a removable recording medium according to the control of the operation control means;
Elapsed time determination means for determining whether a predetermined time has elapsed since a predetermined command was transmitted from the information processing apparatus via the communication means;
And a take-out control unit that sets the recording medium to a take-out state when a predetermined time elapses after the predetermined command is transmitted from the information processing apparatus as a result of the judgment of the elapsed time. Recording / playback device. Event execution means for executing an event according to the control of the operation control means;
Event determining means for determining whether the event executing means is executing an event, and
The event determining means determines whether or not the event executing means is executing an event when a predetermined time has elapsed since the predetermined command was transmitted from the information processing apparatus via the communication means. 2. The recording / reproducing apparatus according to claim 1, wherein when the event execution means is not executing an event, the take-out control means makes the recording medium ready to be taken out.   When the event determination unit determines that the event execution unit is formatting or finalizing the recording medium, the extraction control unit does not make the recording medium ready to be extracted. The recording / reproducing apparatus according to claim 1 or 2. A communication means for communicating with a recording / reproducing apparatus having a plurality of operation modes connected via a line;
A take-out permission / instruction means for instructing whether or not a recording medium attached to the recording / reproducing apparatus is taken out via the communication means;
Event execution means for executing a predetermined event when a recording medium is mounted in the recording / reproducing apparatus and the recording / reproducing apparatus is in an operation mode capable of data transfer;
Event execution determining means for determining whether an event by the event executing means is being executed,
As a result of the determination by the event execution determination means, when an event is being performed by the event execution means, an instruction command is transmitted from the take-out enable / disable instruction means to the recording / playback apparatus, and the recording medium cannot be taken out When the event being performed by the event execution means ends, an instruction command is transmitted from the take-out enable / disable instruction means to the recording / reproducing apparatus so that the recording medium can be taken out. Information processing apparatus. An unloadability determining unit that communicates with the recording / reproducing device via the communication unit and determines whether or not the recording medium can be unloaded based on a processing state being executed by the recording / reproducing device;
The take-out enable / disable instructing means outputs an instruction command for enabling the take-out of the recording medium in a predetermined state set in advance even when the determination result of the take-out enable / disable determining means is unremovable. The information processing apparatus according to claim 4, wherein the information processing apparatus transmits the information to a reproduction apparatus.   The predetermined state set in advance is a state in which a forced termination command from an operating system (OS) operating in a main control unit or an application termination command input by a user is generated. The information processing apparatus according to claim 5.   Even when the determination result of the extraction permission / inhibition determination unit can be extracted, the extraction permission / inhibition instruction unit may remove the recording medium when the recording / reproducing apparatus is in a formatting operation or a finalizing operation. The information processing apparatus according to claim 5, wherein an instruction command to be enabled is not transmitted.   An information processing system comprising: the recording / reproducing apparatus according to any one of claims 1 to 3; and the information processing apparatus according to any one of claims 4 to 7. A communication step of communicating with an information processing apparatus connected via a line via a communication means;
An operation control step of controlling the operation of each unit so as to execute a command to determine whether or not to take out the recording medium sent from the information processing apparatus in the communication step, and a predetermined command transmitted at a constant interval;
A recording / reproducing step of recording / reproducing a removable recording medium according to the control of the operation control step;
An elapsed time determination step of determining whether a predetermined time has elapsed since a predetermined command was transmitted from the information processing apparatus in the communication step;
And a take-out control step for taking out the recording medium when a predetermined time has passed since the predetermined command is transmitted from the information processing device as a result of the judgment of the elapsed time. Control method. A communication step of communicating with a recording / reproducing apparatus having a plurality of operation modes connected via a line;
A take-out permission / instruction instruction step for instructing whether or not a recording medium attached to the recording / reproducing apparatus can be taken out through the communication step;
An event execution step of executing a predetermined event when the recording / reproducing apparatus is in a state where a recording medium is mounted and the recording / reproducing apparatus is in an operation mode capable of transferring data;
An event execution determination step of determining whether an event by the event execution step is being executed,
As a result of the determination of the event execution determination step, when an event is being performed by the event execution step, an instruction command is transmitted from the removal permission / inhibition instruction step to the recording / reproducing apparatus, and the recording medium cannot be removed. When the event being performed by the event execution step ends, an instruction command is transmitted from the take-out enable / disable instruction step to the recording / reproducing apparatus so that the recording medium can be taken out. A method for controlling the information processing apparatus. A communication step of communicating with an information processing apparatus connected via a line via a communication means;
An operation control step of controlling the operation of each unit so as to execute a command to determine whether or not to take out the recording medium sent from the information processing apparatus in the communication step, and a predetermined command transmitted at a constant interval;
A recording / reproducing step of recording / reproducing a removable recording medium according to the control of the operation control step;
An elapsed time determination step of determining whether a predetermined time has elapsed since a predetermined command was transmitted from the information processing apparatus in the communication step;
And a take-out control step for taking out the recording medium when a predetermined time has passed since the predetermined command is transmitted from the information processing device as a result of the judgment of the elapsed time. A computer program for causing a computer to execute a control method. A communication step of communicating with a recording / reproducing apparatus having a plurality of operation modes connected via a line;
A take-out permission / instruction step for instructing whether or not a recording medium mounted on the recording / reproducing apparatus is taken out through the communication step;
An event execution step of executing a predetermined event when the recording / reproducing apparatus is in a state where a recording medium is mounted and the recording / reproducing apparatus is in an operation mode capable of transferring data;
An event execution determination step of determining whether or not an event by the event execution step is being executed,
As a result of the determination in the event execution determination step, when an event is being performed in the event execution step, an instruction command is transmitted from the removal permission / inhibition instruction step to the recording / reproducing apparatus, and the recording medium cannot be removed. Information processing apparatus that transmits an instruction command to the recording / reproducing apparatus from the ejecting permission / inhibition instruction process so that the recording medium can be ejected when the event performed by the event execution process ends. A computer program for causing a computer to execute the control method.   A computer-readable recording medium on which the computer program according to claim 11 or 12 is recorded.

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