GB2157035A - Information retrieval system - Google Patents
Information retrieval system Download PDFInfo
- Publication number
- GB2157035A GB2157035A GB08507070A GB8507070A GB2157035A GB 2157035 A GB2157035 A GB 2157035A GB 08507070 A GB08507070 A GB 08507070A GB 8507070 A GB8507070 A GB 8507070A GB 2157035 A GB2157035 A GB 2157035A
- Authority
- GB
- United Kingdom
- Prior art keywords
- information
- retrieval
- recorded
- disc
- image information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
- G11B27/026—Electronic editing of analogue information signals, e.g. audio or video signals on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
- G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/327—Table of contents
- G11B27/329—Table of contents on a disc [VTOC]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1259—Formatting, e.g. arrangement of data block or words on the record carriers on discs with ROM/RAM areas
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/211—Discs having both read-only and rewritable or recordable areas containing application data; Partial ROM media
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/218—Write-once discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2512—Floppy disks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2525—Magneto-optical [MO] discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/34—Indicating arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
An information retrieval system for retrieving image information with the aid of retrieval information has a non-erasable first record region for recording the image information and a second record region for recording the retrieval information, which are separated from each other. Then, the desired image information is retrieved from the first record region in accordance with the retrieval information. Therefore, important image information can not be erased even if an operation is wrong and a bit unit price of information to be recorded can be made inexpensive. A first embodiment uses two regions of an optical recording disc for the record regions. In a second embodiment the first, second regions are on an optical disc, floppy magnetic disc, respectively. A third embodiment uses a hybrid optical-magnetic disc where the optical, magnetic recording regions are displaced radially from each other on the same disc.
Description
SPECIFICATION
Information retrieval system
The present invention relates to an information retrieval system.
Recently, in a medical field, in order to manage a case history of a patient, medical image information is filed together with retrieval information such as a name and a birthday of the patient. However, since a known medical image filing system
utilizes an erasable and rewritable magnetic disc, a memory storage is very small and thus a bit unit price increases correspondingly. In addition, there is a drawback such that important image information might be erased if an operation is wrong.
The present invention has for its object to elimi
nate the drawbacks mentioned above and to provide an information retrieval system which can make a bit unit price of information to be recorded inexpensive in cost, and can not erase important information even if an operation is wrong.
According to the invention, an information retrieval system for retrieving image information with the aid of retrieval information corresponding thereto, comprises a first record region in which said image information is recorded and a second record region in which said retrieval information is recorded, said first record region being separated from said second record region and at least said first record region being constructed by a nonerasable region.
For a better understanding of the invention, reference is made to the accompanying drawings, in which:
Figure 1 is a schematic view showing a data structure of retrieval information according to the invention;
Figure 2 is a black diagram illustrating a construction of one embodiment of the information retrieval system according to the invention;
Figures 3 and 4 are flow charts respectively depicting an operation of the information retrieval system shown in Fig. 2;
Figure 5 is a block diagram showing a construction of another embodiment of the information retrieval system according to the invention;
Figures 6 and 7 are flow charts respectively illustrating an operation of the information retrieval system depicted in Fig. 5; and
Figure 8 is a schematic view depicting an embodiment of a memory of the information retrieval system according to the invention.
In a first embodiment of the information retrieval system according to the invention which uses a non-erasable optical disc, image information is recorded in a first record region positioned at an outer or an inner portion on the optical disc, and retrieval information is recorded in a second record region located at an inner or an outer portion on the optical disc which is separated from the first record region. The optical disc is accessed by a track number and a sector number, as is the same as a magnetic disc.
Fig. 1 is a schematic view showing a data struc
ture of the retrieval information according to the
invention. In this embodiment, Keyword shows a
name of respective image information, Track No.
and Sector No. illustrate a track number and a
head sector number respectively and Data Length
depicts the number of sectors. Moreover, Pointer shows an address No. of renewed image information when the image information has been rewritten, but is maintained at a Null state when the
renewed operation is not performed. That is to say,
in Fig. 1, the image information of the keyword "ABCD" is recorded along 64 sectors from the sector No. =1 on the track No. =1. Moreover, the image information of the keyword "DEF" was recorded along 128 sectors from the sector No.
=65 on the track No. =1, but the renewed operation has been performed and renewed image information has been recorded along 128 sectors from the sector No. 1 on the track No. =10. In this case, the image information is recorded in the first record region together with the track No. and the sector No.
Fig. 2 is a block diagram showing a construction of the information retrieval system according to the invention. In this embodiment, an optical disc unit 1, an image display unit 2 and a console unit 3 are respectively connected with a central processing unit (CPU)4.
Figs. 3 and 4 are flow charts for explaining an operation of the embodiment mentioned above. At first, an operation for recording the image information and retrieval information on an optical disc will be explained. The optical disc is set to the optical disc unit 1 and then as shown in Fig. 3 empty areas in the first and second record regions on the optical disc are detected under the control of the
CPU4. Then, if at least one of the first and second record regions has no empty area, an indication "Disc Full" representing no recording area on this disc is indicated on the image display unit 2. Then the optical disc has to be exchanged.In case that the both record regions have the empty areas, data sizes of the image information to be recorded and the retrieval information corresponding to the keyword are inputted by means of the console unit 3, and a decision whether the data to be recorded can be stored in each empty areas in the first and the second regord regions or not is performed.
Then, if at least one of data to be recorded exceeds the corresponding empty area, "Disc Full" is indicated on the image display unit 2. Also in this case, the optical disc has to be exchanged. If the both data can be stored in each empty areas, a decision whether the inputted keyword has been recorded in the second record region or not is further effected. Then, in case that the inputted keyword has not been recorded previously, the retrieval information corresponding to the inputted keyword is recorded in the empty area of the second record region, and the corresponding image information is recorded in the empty area of the first record region together with the track No. and the sector No.In addition, in case that the inputted keyword has been recorded previously, the pointer of the retrieval information to be renewed is re written into a head address number of the renewed retrieval information in the second record region. In this manner, the renewed retrieval information and the corresponding image information are respectively recorded in the second and the first record regions of the optical disc.
Further, in case that desired image information is retrieved from the optical disc, all the retrieval information recorded in the second record region is readout and stored in a memory provided in the
CPU 4, and then the keyword corresponding to the desired image information to be retrieved in inputted by means of the console unit 3, so that the data corresponding to the inputted keyword are retrieved from the second record region. Then, if there is not an identical keyword, an indication "No Data" is indicated on the image display unit 2.
Contrary to this, if there is an identical keyword, a decision whether the pointer of the retrieval information is maintained at Null state or not is further performed. In this case, when the pointer is Null state, the track No., sector No. and data length of the desired image information are detected from this retrieval information, and the desired image information is retrieved from the first record region corresponding to the detected data and is displayed on the image display unit 2. Moreover, when the pointer is not Null state, the renewed address of the retrieval information recorded in this pointer is readout and a decision whether the pointer of the renewed retrieval information is maintained at Null state or not is further performed.
In the present embodiment, since use is made of the non-rewritable optical disc and thus even the retrieval information to be renewed is rewritten in the empty area, an important information could not be erased at all even if the operation is wrong and also a large amount of information can be recorded, so that the bit unit price of the recorded information can be made extremely inexpensive. In this case, since an error rate of the optical disc is about 10-6, it is preferable to arrange an error correction space in the retrieval information.
In a second embodiment according to the invention, the image information is recorded in an optical disc serving as the first record region, and the retrieval information is recorded in an erasable and rewritable magnetic disc such as a floppy disc which is arranged separately from the optical disc and functions as the second record region. Then, the same ID number is labeled to the corresponding image information and retrieval information, and only when the labeled ID numbers are identical with each other, an access for the image information is admitted.Moreover, the retrieval information to be recorded in the magnetic disc has such a data structure that only the pointer is eliminated from the data structure shown in Fig. 1, and in case of exchanging the image information the track No., sector No. and data length in the recorded retrieval information corresponding to the keyword are rewritten into those of the retrieval information to be renewed. Further, the image information is recorded in the optical disc together with the track No. and sector No., as is the same as the first embodiment mentioned above.
Fig. 5 is a block diagram showing a construction of another embodiment of the information retrieval system according to the invention. In this embodiment, only a magnetic disc unit 5 connected to the
CPU 4 is added to the embodiment shown in Fig.
2. Hereinafter, an operation of the present embodiment will be explained.
In this embodiment, since each optical discs are related to respective magnetic discs, it is necessary to check whether the optical disc set in the optical disc unit 1 corresponds to the magnetic disc set in the magnetic disc unit 5 or not before starting the access operation. At first, in case of recording the image information and the retrieval information, the optical disc and the magnetic disc are respectively set to the optical disc unit 1 and the magnetic disc unit 5, and then a decision whether the
ID numbers of both discs are identical with each other or not is perfored under the control of the
CPU 4 as shown in Fig. 6. Then, if not identical with each other, an indication "Not Identical" is indicated on the image display unit 2, and if identical with each other, a decision whether empty areas are existent in the both discs or not is further effected.In case that at least one of these discs has no empty area, the indication "Disc Full" is indicated on the image display unit 2. In case that the both discs have the empty areas, data sizes of the image information to be recorded and the retrieval information corresponding to the keyword are inputted by means of the console unit 3, and a decision whether the data to be recorded can be stored in each empty areas in the optical disc and the magnetic disc or not is further effected. Then, if at least one of data to be recorded exceeds the corresponding empty area, "Disc Full" is indicated on the image display unit 2 in the same manner. If the both data can be stored in each empty areas, a decision whether the inputted keyword of the retrieval information has been recorded in the magnetic disc unit 5 or not is perfored.Then, in case that the inputted keyword has not been recorded previously, the retrieval information corresponding to the inputted keyword is recorded in the empty area of the magnetic disc, and the corresponding image information is recorded in the empty area of the optical disc together with the track No. and the sector No. In case that the inputted keyword has been recorded previously, the track No., sector No. and data length of the previously recorded retrieval information corresponding to the keyword are rewritten into those of the image information to be renewed, and the image information to be renewed is recorded on the optical disc.
Moreover, in case that the desired image information is retrieved from the optical disc, the ID numbers of the image information and the retrieval information are readout from the optical disc and the magnetic disc respectively, and a decision whether these ID numbers are identical with each other or not is performed. If not identical with each other, an indication "Not Identical is indicated on the image display unit 2. If identical with each other, the keyword corresponding to the image information to be retrieved next is inputted by means of the console unit 3, and the retrieval information corresponding to the inputted keyword is readout from the magnetic disc under the control of the CPU 4. Then, if there is not an identical keyword, the indication "No Data" is indicated on the image display unit 2.Contrary to this, if there is an identical keyword, the desired image information is retrieved from the optical disc corresponding to the readout retrieval information as is the same as the embodiment mentioned above, and is reproduced on the image display unit 2.
In the embodiment mentioned above, since the retrieval information is recorded in the magnetic disc, it is possible to rewrite the retrieval information and thus the recording space can be utilized effectively. In addition, since the error rate of the magnetic disc is low as compared with the optical disc, it is not necessary to correct the error and thus it is possible to decrease a cost of hardware.
In a third embodiment according to the invention, use is made of a hybrid disc such that the optical disc is arranged concentrically in the inner or the outer portion on the disc and also the magnetic disc is arranged concentrically in the outer or the inner portion on the same disc, and thUs the image information and the retrieval information are recorded respectively in the optical disc portion and the magnetic disc portion on the hybrid disc by means of independent heads.
Fig. 8 is a schematic view showing one embodiment of the hybrid disc mentioned above. In a hybrid disc 6 shown in Fig. 8, an optical disc 7 and a magnetic disc 8 are integrally formed in the outer and the inner portions in a concentric manner. In this case, the retrieval information system which utilizes the hybrid disc mentioned above has the same construction as that shown in Fig. 2, and an operation thereof is also the same as those shown in Figs. 6 and 7 except for the ID number comprison between the image information and the retrieval information.
Therefore, in the embodiment mentioned above, since the optical disc which records the image information and the magnetic disc which records the retrieval information are formed integrally in a concentric manner, it is not necessary to compare the ID numbers between the image information and the retrieval information as compared with the second embodiment, and thus it is possible to effect the information recording and retrieving operations effectively in a short time period as is the same as the first embodiment. In addition, it is not necessary to correct the error as is the same as the first embodiment and thus a hardward cost can be reduced.
The present invention is not limited tD the embodiments explained above, but various modifications can be effected. For example, in the embodiments mentioned above, use is made of the disc-shaped recording medium as the first and second record region, but in the second embodiment wherein the retrieval information is recorded in the independent recording medium from that of the image information, use is made of a magnetic tape as the recording medium for the retrieval information. Moreover, in case that the first and second record regions are formed on the same discshaped recording medium, these regions can be divided into a number of sectors.
As mentioned above, according to the invention, since the important information such as the image information is recorded in the non-erasable recording medium such as the optical disc, which is separated from the recording medium for the retrieval information, it is possible to make the bit unit price of information to be recorded inexpensive in cost, and the important information can not be erased even if the operation is wrong.
Claims (8)
1. An information retrieval system for retrieving an image information with the aid of retrieval information, comprising a firsi record region in which said image information is recorded and a second record region in which said retrieval information is recorded, said first record region being separated fromsaid second record rtuion and at least said first record region being c I structed by a non-erasable region.
2. An information retrieval system < ording to claim 1, wherein sdid first and second record regions are integrally formed on the same optical disc.
3. An information retrieval system according to claim 1, wherein said first record region is formed by an optical disc and said second record region is formed by an erasable and rewritable magnetic disc.
4. An information retrieval system according to claim 3, said optical disc and said magnetic disc are integrally formed in a concentric manner.
5. An information retrieval system according to claim 2, wherein said retrieval information comprises a keyword, a track No., a sector No., a data length and a pointer.
6. An information retrieval system according to claim 3, wherein said retrieval information comprises a keyword, a track No., a sector No. and a data length.
7. An information retrieval system according to claim 4, wherein said retrievial information comprises a keyword, a track No., a sector No. and a data length.
8. An information retrieval system substantially as hereinbefore described with reference to Figure 2, 5 or 8 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053228A JPS60196854A (en) | 1984-03-19 | 1984-03-19 | Information retrieving system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8507070D0 GB8507070D0 (en) | 1985-04-24 |
| GB2157035A true GB2157035A (en) | 1985-10-16 |
| GB2157035B GB2157035B (en) | 1988-06-08 |
Family
ID=12936960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08507070A Expired GB2157035B (en) | 1984-03-19 | 1985-03-19 | Information retrieval system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS60196854A (en) |
| DE (1) | DE3509907A1 (en) |
| GB (1) | GB2157035B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168191A (en) * | 1984-11-26 | 1986-06-11 | Microdatadisc Ltd | Video disc data storage |
| FR2591015A1 (en) * | 1985-11-29 | 1987-06-05 | Picard Michel | WRITING METHOD WITH UPDATING AND READING INFORMATION ON A NON-ERASABLE MEDIUM ORGANIZED IN AREAS |
| FR2602363A1 (en) * | 1986-07-31 | 1988-02-05 | Picard Michel | METHOD FOR DEFINING AND MODIFYING A PARTITION ON THE MEMORY SPACE OF A NON-ERASABLE MEDIUM |
| GB2196467A (en) * | 1986-10-11 | 1988-04-27 | London Weekend Television | Optical disc with added magnetic record/playback facility |
| FR2617627A1 (en) * | 1987-07-01 | 1989-01-06 | Sony Corp | RECORDING DISK HAVING A RECORDING AREA THAT CAN BE READ ONLY AND A RECORDING AREA ON WHICH IT CAN BE WRITTEN, AND CONTROL DEVICE THEREOF |
| DE3732938A1 (en) * | 1987-09-30 | 1989-04-20 | Thomson Brandt Gmbh | CD DEVICE WITH DYNAMIC DISPLAY OF FUNCTIONAL PROCEDURES |
| EP0282997A3 (en) * | 1987-03-18 | 1993-03-03 | Kabushiki Kaisha Toshiba | Electronic file apparatus capable of storing code data into optical memory |
| EP0567170A1 (en) * | 1992-04-21 | 1993-10-27 | International Business Machines Corporation | Optical disk with rewritable and write-once areas |
| EP0604946A1 (en) * | 1992-12-30 | 1994-07-06 | Sony Corporation | Optical disc for a vehicle navigation system having both a read-only area and a userwritable area |
| US5355355A (en) * | 1987-03-18 | 1994-10-11 | Kabushiki Kaisha Toshiba | Electronic file apparatus capable of storing code data and image data into optical memory |
| EP0302119B1 (en) * | 1987-02-12 | 1996-10-30 | Dai Nippon Insatsu Kabushiki Kaisha | Method for recording and reproducing data for an optical card |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2199684B (en) * | 1986-10-13 | 1991-06-19 | Olympus Optical Co | Optical recording apparatus and methods of recording items of data on an optical recording medium using such apparatus |
| US4998009A (en) * | 1987-03-31 | 1991-03-05 | Canon Kabushiki Kaisha | Information recording method for recording data and directories in a plurality of blocks comprising divided recording areas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1531528A (en) * | 1975-10-16 | 1978-11-08 | Western Electric Co | Apparatus for providing valid information for invalid information in unalterable memory means |
| EP0049353A1 (en) * | 1980-10-06 | 1982-04-14 | Texas Instruments Incorporated | Semiconductor memory device for microprocessor system |
| EP0078492A2 (en) * | 1981-10-30 | 1983-05-11 | Hitachi, Ltd. | Method of controlling storage device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599084B2 (en) * | 1977-02-21 | 1984-02-29 | 横河電機株式会社 | Spare track switching device for magnetic disks |
| JPS6051731B2 (en) * | 1978-06-15 | 1985-11-15 | 三菱電機株式会社 | Two-tier file system |
| JPS5755548A (en) * | 1980-09-19 | 1982-04-02 | Fujitsu Ltd | Magnetic disk device |
| JPS5776662A (en) * | 1980-10-31 | 1982-05-13 | Toshiba Corp | Erasure system for picture information |
| SE439210B (en) * | 1980-12-04 | 1985-06-03 | Esselte Ab | PROCEDURE AND DEVICE FOR STORAGE AND USE OF AN INDEX FOR INFORMATION ON A VIDEO DISC |
| JPS5827269A (en) * | 1981-08-10 | 1983-02-17 | Nec Corp | Controlling system for picture file |
| JPS5832236A (en) * | 1981-08-18 | 1983-02-25 | Matsushita Electric Ind Co Ltd | Optical recorder and reproducer |
-
1984
- 1984-03-19 JP JP59053228A patent/JPS60196854A/en active Pending
-
1985
- 1985-03-19 DE DE19853509907 patent/DE3509907A1/en active Granted
- 1985-03-19 GB GB08507070A patent/GB2157035B/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1531528A (en) * | 1975-10-16 | 1978-11-08 | Western Electric Co | Apparatus for providing valid information for invalid information in unalterable memory means |
| EP0049353A1 (en) * | 1980-10-06 | 1982-04-14 | Texas Instruments Incorporated | Semiconductor memory device for microprocessor system |
| EP0078492A2 (en) * | 1981-10-30 | 1983-05-11 | Hitachi, Ltd. | Method of controlling storage device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168191A (en) * | 1984-11-26 | 1986-06-11 | Microdatadisc Ltd | Video disc data storage |
| FR2591015A1 (en) * | 1985-11-29 | 1987-06-05 | Picard Michel | WRITING METHOD WITH UPDATING AND READING INFORMATION ON A NON-ERASABLE MEDIUM ORGANIZED IN AREAS |
| EP0227530A1 (en) * | 1985-11-29 | 1987-07-01 | Michel Picard | Method for recording with updating and for the reproduction of data on a non-erasable sectorial record carrier |
| US4807205A (en) * | 1985-11-29 | 1989-02-21 | Michel Picard | Process for writing with updating and reading informations on a non-erasable support organized into sectors |
| FR2602363A1 (en) * | 1986-07-31 | 1988-02-05 | Picard Michel | METHOD FOR DEFINING AND MODIFYING A PARTITION ON THE MEMORY SPACE OF A NON-ERASABLE MEDIUM |
| EP0258104A1 (en) * | 1986-07-31 | 1988-03-02 | Michel Picard | Method of determining and of modifying a partition in a memory space of a non-erasable carrier |
| GB2196467A (en) * | 1986-10-11 | 1988-04-27 | London Weekend Television | Optical disc with added magnetic record/playback facility |
| EP0302119B1 (en) * | 1987-02-12 | 1996-10-30 | Dai Nippon Insatsu Kabushiki Kaisha | Method for recording and reproducing data for an optical card |
| US5355355A (en) * | 1987-03-18 | 1994-10-11 | Kabushiki Kaisha Toshiba | Electronic file apparatus capable of storing code data and image data into optical memory |
| EP0282997A3 (en) * | 1987-03-18 | 1993-03-03 | Kabushiki Kaisha Toshiba | Electronic file apparatus capable of storing code data into optical memory |
| FR2617627A1 (en) * | 1987-07-01 | 1989-01-06 | Sony Corp | RECORDING DISK HAVING A RECORDING AREA THAT CAN BE READ ONLY AND A RECORDING AREA ON WHICH IT CAN BE WRITTEN, AND CONTROL DEVICE THEREOF |
| DE3732938A1 (en) * | 1987-09-30 | 1989-04-20 | Thomson Brandt Gmbh | CD DEVICE WITH DYNAMIC DISPLAY OF FUNCTIONAL PROCEDURES |
| EP0567170A1 (en) * | 1992-04-21 | 1993-10-27 | International Business Machines Corporation | Optical disk with rewritable and write-once areas |
| US5360651A (en) * | 1992-04-21 | 1994-11-01 | International Business Machines Corporation | Optical disk having R/W and worm area |
| EP0604946A1 (en) * | 1992-12-30 | 1994-07-06 | Sony Corporation | Optical disc for a vehicle navigation system having both a read-only area and a userwritable area |
| US5535125A (en) * | 1992-12-30 | 1996-07-09 | Sony Corporation | Navigation system data recordable by user, recording medium thereof, and methods for recording/reproducing to/from the same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2157035B (en) | 1988-06-08 |
| GB8507070D0 (en) | 1985-04-24 |
| DE3509907C2 (en) | 1991-03-28 |
| DE3509907A1 (en) | 1985-10-03 |
| JPS60196854A (en) | 1985-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Effective date: 20050318 |