JPH07200178A - Information storage medium utilization system - Google Patents

Abstract

PURPOSE:To obtain a management method for a storage part which stores data such as image information and voice information by managing the storage part as plural divisions. CONSTITUTION:An external system sends a division quantity setting command for a buffer memory, an input selection condition setting command for respective buffer divisions, and an output data selection condition setting command for the respective buffer divisions to a central processing part. For example, data of a CD-ROM disk which are outputted from a CD-ROM decoder 14 are stored in buffer divisions 54 to 56 according to data selection conditions of input data selection parts 51 to 53. The data of the CD-ROM data which are stored in the buffer divisions 54 to 56 are transferred to the external system through a bus interface part 11 according to data selection conditions of output data selection parts 57 to 59. In this case, the data are stored in the respective buffer divisions under conditions matching the input data selection conditions, so data storage capacity that each division manages is variable in length.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information storage medium utilization system in which image information, audio information, etc. stored in an information storage medium are stored in a storage unit and the stored data is utilized, and in particular, information The present invention relates to data management of a storage unit that stores

[0002]

2. Description of the Related Art As an example of a conventional information storage medium utilization system, for example, there is a game machine system utilizing a ROM cartridge and an optical disk memory described in Japanese Patent Laid-Open No. 4-303488.

A game machine system using this ROM cartridge and an optical disk memory uses a processing program such as image processing stored in a semiconductor ROM in the ROM cartridge and a read program to convert the image data and audio data stored in the optical disk memory. It is characterized by being used.

[0004]

The above-mentioned prior art has not disclosed a method of managing a storage unit for storing data such as image information and audio information.

An object of the present invention is to provide a management method for a storage unit that stores data such as image information and audio information.

[0006]

In order to achieve the above object, an information storage medium utilization system of the present invention is an information storage medium on which information is recorded, and an information storage medium for reading information recorded on the information storage medium. A read control unit, an image information processing unit that processes image information recorded in the information storage medium,
A voice information processing unit that processes voice information recorded in the information storage medium, a storage unit that stores information recorded in the information storage medium, an information storage medium read control unit, an image information processing unit, a voice information processing unit, and A central processing unit that controls the storage unit.

[0007]

According to the information storage medium utilization system of the present invention, the information storage medium read control unit mounted with the information storage medium
The information recorded in the information storage medium is stored in a designated section of the storage section managed by a plurality of sections under the control of the central processing section, and if the information stored in the designated section is image information, an image is displayed. The data is transferred to the image information processing unit that processes the information, and if the information stored in the designated section is audio information, the data is transferred to the audio information processing unit that processes the audio information.

When the bus interface unit is added, the data transfer request from the external system is
Data transmitted to the central processing unit via the bus interface unit and transferred by the central processing unit to data required by the external system are transferred to the external system via the bus interface unit.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram for explaining the concept of an information storage medium utilization system according to the present invention. In the following embodiments, an optical disc is assumed as an example of the information storage medium.

The central processing unit 1 reads the information recorded on the optical disc 2 by the optical disc read control unit 3 and judges the content of the information recorded on the optical disc 2.
Then, if the information recorded on the optical disc 2 is image information, the central processing unit 1 transfers the data to the image processing unit 5 via the local bus 4 and displays the processed result on the display 6. If the information recorded on the optical disc 2 is audio information, the data is transferred to the audio processing unit 7 via the local bus 4, and the processed result is output from the speaker 8.

The buffer memory 9 serving as a storage unit stores information recorded on the optical disk 2 when the information is not image information or audio information, or when image information or audio information does not need to be processed immediately. To store.

A data transfer request from the external system 10 is transmitted to the central processing unit 1 via the bus interface unit 11 and the local bus 4, and the data requested by the external system 10 is controlled by the central processing unit 1. Data is transferred from the buffer memory 9 to the external system 10 via the local bus 4 and the bus interface unit 11.

FIG. 2 is a block diagram showing a first embodiment of the information storage medium utilization system according to the present invention. However,
The same parts as those in FIG. 1 have the same numbers.

In this embodiment, a compact disc (CD) 12 is used as an optical disc, and an MPEG (Moving Picture Ex) is used as image information and audio information.
The compressed data according to the Pert Group standard is adopted. The connection with the external system is directly connected to the signal bus (host bus) of the external system.

The compact disc (CD) 12 loaded in the CD reading section 13 is a data disc (CD-R).
In the case of an OM disc), the output signal of the CD reading unit 13 is converted into CD-ROM data by the CD-ROM decoder 14 and stored in the CD-ROM work memory 15.

The central processing unit 1 judges the contents of the CD-ROM data, and if the CD-ROM data is image information, it is C
Data is transferred from the D-ROM work memory 15 to the MPEG video processing unit 16 via the local bus 4. M
In the PEG video processing unit 16, the data is once MPE
After being stored in the G work memory 17, the MPEG work memory 1
The compressed image data in 7 is decoded into digital video data, and displayed on the display 6 via the video reproducing unit 18.

When the CD-ROM data is audio information, the data is transferred from the CD-ROM work memory 15 to the MPEG audio processing section 19 via the local bus 4. The MPEG audio processing unit 19 decodes the compressed audio data into an audio signal, and outputs the audio from the speaker 8 via the audio reproducing unit 20.

The buffer memory 9 is a memory managed by the central processing unit 1, and normally stores file management information, but stores data that cannot be stored in the CD-ROM work memory 15 or a CD. -ROM work memory 1
The data in 5 is once stored in this buffer memory 9,
It is also used as a data buffer for data transfer to the MPEG video processing unit 16 and the MPEG audio processing unit 19.

A data transfer request from an external system is reflected on the host bus 21 and transmitted to the central processing unit 1 via the bus interface unit 11 and the local bus 4. The central processing unit 1 transfers the data requested by the external system to the host bus 21 (external system) via the local bus 4 and the bus interface unit 11.

When the compact disc (CD) 12 loaded in the CD reading unit 13 is an audio disc, the central processing unit 1 selects the audio signal input of the audio reproducing unit 20 by the audio switching signal and inputs the CD audio signal. Then, the output signal of the CD reading unit 13 is output to the outside as sound (music) from the speaker 8 via the sound reproducing unit 20. That is, in this case, the information storage medium utilization system of the present invention operates as a general CD audio player.

FIG. 3 is a block diagram showing a second embodiment of the information storage medium utilization system according to the present invention. However,
2 are the same as those in FIG.

In this embodiment, the CD-ROM work memory 15 and the buffer memory 9 are used in common. Effective in reducing the number of parts.

CD-R from CD-ROM decoder 14
The OM data is stored in the buffer memory 9 and then stored on the CD.
-Perform error correction (layered ECC) as a ROM. This error correction may be performed in real time (real time processing), but since it may be completed before it is read from the buffer memory 9, the priority and processing time of other control processing should be taken into consideration. It is also possible to delay the start time of error correction.

That is, while the CD-ROM data from the CD-ROM decoder 14 is stored in the buffer memory 9, the error correction (layered ECC) as the CD-ROM is time-divisionally performed. This process can be performed until the buffer capacity of the buffer memory 9 is exceeded.

FIG. 4 is a block diagram showing an embodiment of the bus interface unit 11 in the information storage medium utilization system according to the present invention. However, the same components as those in FIG. 2 have the same numbers.

A data transfer request from an external system is written in the command register 22 as a data transfer request command via the host bus 21. The central processing unit (not shown) reads the content (data transfer request) of the command register 22 via the local bus 4 and determines the content of the data transfer.

When a control parameter is required in association with the data transfer request command, the parameter register 23
Control parameters are exchanged via.

The operation status indicating the operation state in the information storage medium utilization system is transmitted to the host bus 21 (external system) via the status register 24.
There are two types of operation status: hardware status generated by the logic of the circuit and software status managed by the central processing unit by software. Regarding the hardware status, the logic of the circuit automatically generates, so the central processing unit reads the hardware status when the hardware status changes,
Although it is necessary to judge the content, since the same content of the software status is stored in the register in the central processing unit, it is sufficient to write it in the status register 24 only when the software status is changed.

Data required by the external system is transferred from the local bus 4 to the host bus 21 via the data bus matching circuit 25.

If the control parameters necessary for the data transfer request command are provided via the data bus matching circuit 25, the parameter register 23 can be dispensed with.

FIG. 5 is an explanatory view for explaining a concrete management method of the buffer memory of the present invention.

The external system instructs the central processing unit to set the number of sections (n) of the buffer memory, the input data selection condition setting command for each buffer section, and
An output data selection condition setting command for each buffer section is issued.

Input data selection conditions for each buffer section are as follows:
These are file number specification, channel number specification, submode specification, coding information specification, buffer size specification of buffer section, and opening / closing instruction of buffer section. A file number and a channel number are set in the sub-header of each sector data.

The output data selection condition of each buffer section is as follows:
File number designation, channel number designation, submode designation, coding information designation, etc. In the sub mode designation, the data type (video data, audio data, general data) of the sector data is designated.

The data of the CD-ROM disc output from the CD-ROM decoder 14 is stored in the buffer section 5 according to the data selection conditions of the input data selection sections 51 to 53.
4 to 56. The data of the CD-ROM disc stored in the buffer sections 54 to 56 is transferred to the external system via the bus interface unit 11 according to the data selection conditions of the output data selection units 57 to 59.

In the embodiment of FIG. 5, since each buffer section stores data in that section under the condition that matches the input data selection condition of that section, the data storage capacity managed by each section of the buffer memory is It has a variable length. That is,
The storage capacity of the buffer memory, which is limited, will be occupied by the competition among the sections.

FIG. 6 is an explanatory diagram for explaining a specific method of copy processing in the buffer memory management of the present invention.

FIG. 6A shows the structure of the copy source buffer section before copying.

Logical block number (N
o. ) Is managed by a continuous sequence number starting from 1, but the logical block number (N) of the entire buffer (all partitions)
o. ) Is not a continuous sequence number because it is the order of physical arrangement.

The copy source stores data D1 to D5 corresponding to the logical block numbers 1 to 5 in the copy source buffer section.

FIG. 6B shows the structure of the copy destination buffer section before copying.

The copy destination stores data D6 to D9 corresponding to the logical block numbers 1 to 4 in the copy destination buffer section.

In such a buffer partition state, when the copying process for copying the data D3 and D4 of the copy source buffer partition next to the logical block number 1 of the copy destination buffer partition is carried out, the structure of the copy destination buffer partition becomes , FIG. 6 (c), FIG.
As shown in (d), data D3 and D4 are stored at the logical block numbers 2 and 3 in the buffer partition, respectively. In the copy destination buffer section, this data D3, D4
Is newly stored, the logical block number in the entire buffer (all partitions) becomes the new number (18, 19). The structure of the copy source buffer section does not change due to the copy process.

FIG. 6C shows the structure of the copy destination buffer section after copying in the insert mode. Since the mode is the insertion mode, the data D7 to D9 are stored at the logical block numbers 4 to 6 in the buffer partition, respectively. The logical block numbers (13, 14, 16) in the entire buffer (all partitions) for the data D7 to D9 do not change.

FIG. 6D shows the structure of the copy destination buffer section after copying in the overwrite mode. Since it is the overwrite mode, the data D7 and D8 are overwritten and erased. Note that it is only erased logically, and physically
Logical block number 1 in the entire buffer (all partitions)
It exists at 3,14.

FIG. 7 is an explanatory view for explaining a concrete method of the moving process in the buffer memory management of the present invention.

The structure of the transfer source buffer partition before the transfer and the structure of the transfer destination buffer partition before the transfer are the same as the structure of the copy source buffer partition before the copying described in the copying process.
Also, since the configuration of the copy destination buffer section before copying is exactly the same, it is omitted in FIG.

Data D3 and D4 of the transfer source buffer section
Is moved to the logical block number 1 of the destination buffer partition, the configuration of the source buffer partition is as shown in FIG. Then, the data D5 is stored, and the number of blocks in the migration source buffer section changes from 5 to 3.

The structure of the destination buffer partition is shown in FIG.
As shown in (b) and FIG. 7 (c), data D3 is placed at the logical block numbers 2 and 3 in the buffer partition, respectively.
D4 is stored. In the destination buffer partition, this data D3, D4 is only moved from the source, so logical block numbers (10, 1) in the entire buffer (all partitions) are moved.
1) does not change.

FIG. 6B shows the structure of the copy destination buffer section after copying in the insert mode. Since the mode is the insertion mode, the data D7 to D9 are stored at the logical block numbers 4 to 6 in the buffer partition, respectively. The logical block numbers (13, 14, 16) in the entire buffer (all partitions) for the data D7 to D9 do not change.

FIG. 6C shows the structure of the copy destination buffer section after copying in the overwrite mode. Since it is the overwrite mode, the data D7 and D8 are overwritten and erased. Note that it is only erased logically, and physically
Logical block number 1 in the entire buffer (all partitions)
It exists at 3,14.

In the above embodiments, an optical disc is assumed, but it goes without saying that any medium can be used as long as it can store information, not limited to an optical disc.

Further, although the image processing unit and the audio processing unit are incorporated in the information storage medium utilizing system, they may be incorporated in the external system side if the data transfer is sufficiently high speed.

[0055]

The information storage medium utilization system of the present invention comprises:
The information recorded on the information storage medium is read out from the information storage medium read control section, in which the information storage medium is mounted, to the local bus under the control of the central processing section, and if the information is image information, the image information is processed. If the information is voice information, the data is transferred to a voice information processing unit that processes voice information. And the management request about the buffer memory from the external system is
It is transmitted to the central processing unit via the bus interface unit, and the buffer memory required by the external system can be managed under the control of the central processing unit.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating the concept of an information storage medium utilization system according to the present invention.

FIG. 2 is a block diagram showing a first embodiment of an information storage medium utilization system according to the present invention.

FIG. 3 is a block diagram showing a second embodiment of the information storage medium utilization system according to the present invention.

FIG. 4 is a block diagram showing an embodiment of a bus interface unit 11 in the information storage medium utilization system according to the present invention.

FIG. 5 is an explanatory diagram for explaining a specific management method of the buffer memory of the present invention.

FIG. 6 is an explanatory diagram for explaining a specific method of copy processing in the buffer memory management of the present invention.

FIG. 7 is an explanatory diagram for explaining a specific method of movement processing in buffer memory management of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Central processing part, 2 ... Optical disk, 3 ... Optical disk read-out control part, 4 ... Local bus, 5 ... Image processing part, 6 ...
Display, 7 ... Voice processing section, 8 ... Speaker, 9 ... Buffer memory, 10 ... External system, 11 ... Bus interface section, 12 ... Compact disk (CD), 1
3 ... CD reading unit, 14 ... CD-ROM decoder, 1
5 ... CD-ROM work memory, 16 ... MPEG video processing unit, 17 ... MPEG work memory, 18 ... Video reproducing unit, 19 ... MPEG audio processing unit, 20 ... Audio reproducing unit, 21 ... Host bus, 22 ... Command register, Two
3 ... Parameter register, 24 ... Status register,
25 ... Data bus matching circuit.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Setsuhiro Fukuyama 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Stock company Hitachi Image Information Systems (72) Shinji Otsuka 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi, Ltd. Information & Video Media Division (72) Inventor Mikihisa Uematsu 292 Yoshida-cho, Totsuka-ku, Yokohama-shi Kanagawa Stock Company Hitachi's Information & Video Media Division

Claims (6)

[Claims] 1. An information storage medium on which information is recorded, an information storage medium read control unit for reading out the information recorded on the information storage medium, and image information for processing image information recorded on the information storage medium. A processing unit, a voice information processing unit that processes voice information recorded in the information storage medium, a storage unit that stores information recorded in the information storage medium, the information storage medium read control unit, and the image information. In an information storage medium utilization system including a processing unit, the voice information processing unit, and a central processing unit that controls the storage unit, the storage unit is managed by a plurality of partitions. Media utilization system. 2. When the information recorded on the information storage medium is input to the plurality of sections, the information is selected and input for each section and managed. Information storage medium utilization system. 3. The information storage medium according to claim 1, wherein when outputting from the plurality of sections, the input information is selected, output, and managed for each section. Utilization system. 4. The information storage medium utilization system according to claim 1, wherein the stored information can be moved or copied between the plurality of partitions. 5. A bus interface unit coupled to an external system under the control of the central processing unit is added, and the storage unit is managed from the external system.
The information storage medium utilization system according to claim 1. 6. The information according to claim 5, wherein input / output can be performed with respect to an arbitrary section of the storage unit to / from the external system via the bus interface unit. Storage medium utilization system.