JPH01211388A - Optical disk device - Google Patents

Abstract

PURPOSE:To enable a physical directory to be managed on a host computer even when the host computer is connected later on by providing a physical directory memory part storing the physical directory concerning with a file when each file is recorded. CONSTITUTION:When a control part 4 records the file on an optical disk by controlling an input/output part 3 and an optical disk driving part 1, it makes the physical directory concerning with that file and makes the physical directory memory part 5 to store it. Therefore, even in case that the host computer is not connected, the physical directory can be stored in the memory part 5. Thus, when the host computer is connected later on, the information of the physical directory is sent to the host computer and it can be managed on the host computer.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an optical disc device for recording and reproducing digital data on an optical disc.

BACKGROUND OF THE INVENTION Conventional optical disk devices include, for example, Japanese Patent Application Laid-open No. 1986-62-
It is shown in Japanese Patent No. 226487. FIG. 4 shows a configuration diagram of this conventional optical disc device, where 3o is an optical disc drive unit that rotates the set optical disc and records and plays back data, and 31 is an optical disc drive unit that moves from an external device to a designated sector. a read/write control unit that outputs information and data recorded on the optical disc to the optical disc drive unit; 3;
2 is an input/output circuit for exchanging data with an external device.

FIG. 6 is a block diagram of an image file system using a conventional optical disk device. In FIG. 5, 33 is the optical disk device shown in FIG. 4, 34 is a terminal device for operating this image file system, 36 is an image input device for inputting images such as an image scanner or a television camera, 36 3 is a host computer that controls the image file system and performs various data processing; 37 is a keyboard for the operator to input data; 38 is a screen display section for displaying data to the operator; 39 is the keyboard 37 and screen a control unit for controlling the display unit 38, 4
0 is an input/output circuit for transmitting data with the host computer 36 , 41 is a CPU that executes various arithmetic processing and control, and 42 is an input/output circuit for transmitting data with the optical disk device 33 . , 43 is an input/output circuit for exchanging data with the terminal device 34, and 44 is an input/output circuit for exchanging data with the image input 35.

The recording operation and reproducing operation to the optical disk device 33 in the image file system using the conventional optical disk device configured as described above will be explained below. During recording, the CPU 41 of the host computer 36 responds to instructions from the operator's keyboard 37 of the terminal device 34.
takes in an image from the image input device 35, performs various arithmetic processing, outputs it to the optical disk device 33, and records it on an optical disk.

At this time, the CPU 41 creates a physical directory. The physical directory is the actual image file name.

It consists of information such as the sector address indicating the first sector of the image file on the optical disc and the length of the image file. The actual image file name is a name automatically added by the CPU 41, and can also be represented by a number, for example. The operator creates a logical directory based on this physical directory. The logical directory consists of a logical image name that is a name given to the image by the operator, a real image file name added to the image, and the like. When playing,
The CPU 41 uses the above-mentioned physical directory and logical directory to obtain the address on the optical disk of the image designated by the operator, instructs the optical disk device 33 to reproduce the address, and uses the reproduction signal to reproduce the image on the terminal device 34. The image is displayed on the display section 38.

Problems to be Solved by the Invention However, in the above configuration, the physical directory is created by the CPUK of the host computer 36, so when the optical disk device 33 is disconnected from the host computer 36 and recording/reproduction is performed, the image is not transferred to the optical disk. It is necessary for the operator himself to manage which of the above addresses the data is recorded on, and there is a problem in that the optical disc device 33 cannot be used without a host computer.

In view of these points, the present invention allows various video and audio files to be recorded and played back on an optical disk by combining with a video signal processing device or an audio signal processing device even when a host computer is not connected. ,
To provide an optical disk device that can manage video and audio files recorded when there is no host computer on the host computer even when the device is connected to the host computer afterwards. ' Means for Solving the Problems The present invention provides an optical disc drive unit that records and reproduces data on an optical disc, an input/output unit that transmits and receives data to and from an external device, and a physical file for each file when recording the file. The optical disk drive apparatus includes a control section for assigning a name, and a physical directory storage section for storing a physical directory indicating the correspondence between the physical file name and the starting address of the file on the optical disk.

According to the above-described structure, when the control section controls the input/output section and the optical disk drive section to record a file on the optical disk, the control section creates a physical directory related to the file, and stores the physical directory in the physical directory storage section. to be memorized.

This allows you to store the physical directory in the physical directory storage unit even when the host computer is not connected, and then send the physical directory information to the host computer when the host computer is connected. , can be managed on the host computer.

Embodiment FIG. 1 shows a configuration diagram of an optical disc device in an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an optical disk drive unit that records and reproduces data on an optical disk, 2 a recording/reproduction data processing unit that performs modulation/demodulation and error correction processing, and 3
4 is an input/output unit that sends and receives data to and from an external device; 4 is a control unit that assigns a physical file name to each file when recording the file; 6 is a physical file name of each file and its starting address on the optical disk; 6 is a character display section that displays a physical file name.

FIG. 2 shows the configuration of a video/audio file system using the optical disk device of this embodiment. In FIG. 2, 7 is the optical disk device shown in FIG. 1, 8 is a video signal processing device, 9 is an audio signal processing device, 10 is a video input section, 11 is a video display section, 12 is a video signal processing section, 13 is the input/output section, 1
4 is an audio input section, 16 is an audio output section, 16 is an audio signal processing section, and 17 is an input/output section.

The operation of the video/audio file system configured as shown in FIG. 2 will be described below. When recording a still image file, the video signal processing device 7 inputs a video signal from the video input section 1o of a camera, VTR, etc.
2 as still image data. In the optical disc device 7, when the optical disc is loaded, a physical directory is reproduced from the optical disc and stored in the physical directory storage unit 5. The control unit 4 includes a physical directory storage unit 6
Searches for an unrecorded area sufficient to record a still image on the optical disc by referring to the physical directory stored in the , and instructs the optical disc drive unit 1 to move the optical head to the start address of the unrecorded area. do. After that, the control unit 4
controls the input/output section 3 to input still image data from the video signal processing device 8 to the recording/reproduction data processing section 2 via the input/output section 13, and also controls the optical disk drive section 1 to input the still image data. Record on an optical disc. At this time, the physical file name for the recorded still image file is a number automatically assigned by the control unit 4, and together with the start address of the file on the optical disc, it is used as a physical directory.
It is added to the physical directory storage unit 5. The physical file name is then displayed on the character display section 6. The contents of the physical directory storage unit 6 are recorded on the optical disc via the control unit 4 and the recording/reproduction data processing unit 2 when the optical disc is ejected.

When playing a still image file, when the user instructs to play a file with a certain physical file name, the control unit 4 refers to the contents of the physical builf)+J storage unit 6 and obtains the start address on the optical disk for that file. , controls the optical disc drive unit 1 to reproduce a predetermined file. At the same time, the input/output section 3 sends playback data to the video signal processing device 8, and the video signal processing device 8 outputs the playback data to the video display section 11.
to be displayed. A similar operation is performed when recording and reproducing audio. As a result, the user is freed from the conventional management of the start address on the optical disc, and only has to manage the physical file name.

If the user manages the first address on the optical disc, if the management information is lost, in order to play a certain file, for example, the address values must be played in order of decreasing value. In many cases, it is an address in the middle of a still image file, so
Reproducing a given file is extremely difficult. In contrast, in the video/audio file system using the optical disk device of this embodiment, the user only has to manage the physical file name, so even if the user loses the management information, the numeric value representing the physical file name can be used. By sequentially inputting the following files and sequentially playing back the corresponding files, it is relatively easy to play back a given file.

FIG. 3 shows the configuration of a video/audio file system using the optical disk device and host computer of this embodiment. In FIG. 3, 18 is a terminal device operated by an operator, 19 is an image input device such as an image scanner, 20 is a host computer, and 21 is a CPU that controls the host computer.

22 is an input/output unit that sends and receives data to and from the optical disk device 7; 23 is an input/output unit that sends and receives data to and from the terminal device 18; and 24 is an input/output unit that sends and receives data to and from the image input device 19. .

In the video/audio file system configured as shown in FIG. Computer 20 C
The PU 21 does not have to manage addresses on the optical disk. Therefore, when the operator instructs recording of a still image from the terminal device 18, the data of the still image input from the video signal processing device 8 is recorded on the optical disk device 7. At this time, the control unit 4 automatically assigns a physical file name to the still image file and sends it to the host computer 2 via the input/output unit 3.
The physical file name is notified to the CPU 21 of o. On the host computer, an operator can add a logical file name and search information to the physical file name, but it is not possible to change the physical file name. A similar operation is performed for audio recording. During playback, the operator specifies the playback file by a logical file name and assigns it to C
The PU 21 converts it into a physical file name and instructs the optical disc device 7 to reproduce it. The control unit 4 searches for the start address on the optical disc for the physical file name and reproduces the video or audio.

Accordingly, the CPU 21 of the host computer 20
Freed from managing the start address on the optical disk. Also, by obtaining the physical directory from the control unit 4,
As shown in FIG. 2, even files recorded without being connected to a host computer can be managed by giving them logical file names and search information.

As described in detail, according to the present invention, even when a host computer is not connected, various video and audio files can be recorded and played back on an optical disk by combining with a video signal processing device or an audio signal processing device. Moreover, even if the computer is connected to the host computer afterwards, the video and audio files recorded when the host computer was not connected can be managed on the host computer, which has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an optical disk device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of a video/audio file device using the same embodiment, and FIG.
FIG. 4 is a block diagram showing a configuration in which a host computer is connected to the device shown in the figure, FIG. 4 is a configuration diagram of a conventional optical disk device, and FIG. 6 is a configuration diagram of a conventional image file system using the same device. DESCRIPTION OF SYMBOLS 1... Optical disc drive unit, 2... Recording/reproducing data processing unit, 3... Input/output unit, 4...
. . . control unit, 5 . . . physical directory storage unit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Entrance

Claims (1)

[Claims] an optical disk drive section that records and plays back data on the optical disk; a recording/playback data processing section that performs modulation/demodulation and error correction processing; an input/output section that sends and receives data to and from external devices; An optical disc device comprising: a control unit that names a physical file; and a physical directory storage unit that stores a physical directory indicating a correspondence between the physical file name and the start address of the file on the optical disc.