JPH0679286B2 - Information recording / reproducing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus used for secondary storage of a computer system.

2. Description of the Related Art Conventional information recording / reproducing devices include those using magnetic tapes, magnetic disks, magnetic drums, and optical disks. Basically, the entire medium is "record / reproduce", "write-once", "reproduction-only". "Met.

Problems to be Solved by the Invention However, if the entire recording area (track, sector) has uniform properties, a large amount of information (content such as a dictionary or character font) whose content is predetermined ( When providing (data) as a product, it is either to record all information electrically (record / playback, write-once type, etc.) or physically record all information (playback only, etc.). . In other words, the information recording time at the time of providing a product is constant regardless of the amount of information for a physically recording medium, but there is a problem that the user cannot add, correct, or supplement information. However, information can be added, corrected, and compensated for by a user on an electrically recorded medium, but there is a problem that the information recording time at the time of providing a product depends on the amount of the information.

In view of such a point, the present invention uses an optical disk that waits for information areas having different properties in the same medium, physically records and provides the information when the product is provided, and electrically uses the information by the user when the product is used. It is an object of the present invention to provide an information recording / reproducing device capable of various additions, corrections, and compensations.

Means for Solving the Problems The present invention provides an information reproducing means for reproducing information from a first type information recording area or a second type information recording area, and a first type information recording area or a second type information recording area. The information recording / reproducing apparatus includes an information recording means for recording information, and an information reproducing means and a control means for controlling the information recording means by the information of the control information section.

Operation According to the present invention having the above-described configuration, the control means reproduces information from the initial information part when the control information part indicates “unupdated” when reproducing information in the first type information recording area, When it indicates "updated", the information reproducing means is instructed to reproduce the information from the update information section,
At the time of reproducing information from the second type information recording area, the information reproducing means is instructed to reproduce the information from the information recording section. Further, at the time of recording information in the first type information recording area, the information control unit is changed to “already updated”, the information recording unit is instructed to record information in the update information section, and the information recording in the second type information recording area is performed. At times, the information recording means is instructed to record information in the information recording section. By configuring and controlling in this way, information is physically recorded in the initial information section, and when addition, correction or compensation is required, it is electrically recorded in the update information section or the information recording section. Is something that can be done.

Embodiment FIG. 1 is a block diagram of an information recording / reproducing apparatus in an embodiment of the present invention. In FIG. 1, 1 is a recording medium having a first type information recording area and a second type information recording area, 2 is information reproducing means, 3 is information recording means, and 4 is control means.

The operation of the information recording / reproducing apparatus of this embodiment configured as described above will be described below.

The recording medium 1 is uniformly divided into blocks of a fixed size as an information recording area, and the operation of recording / reproducing information is performed in block units. This block is generally called a sector, and is managed by, for example, being provided with continuous addresses in a clockwise spiral from the outer peripheral side to the inner peripheral side of the recording medium 1. Hereinafter, the first type information recording area will be described as a D-type sector and the second type information recording area will be described as an S-type sector. This is D
The type sectors and S-type sectors can be arbitrarily arranged in the recording medium 1 without distinction in terms of address, and are addressed in the order in which they are arranged.

FIG. 2 is a first example showing the configuration in the D-type and S-type sectors. In FIG. 2, 10 is a D-type sector, 11 is a control information part, 12 is an update information part, 13 is an initial information part, 20 is an S-type sector, 21 is a control information part, and 22 is an information recording part. The values F of the control information sections 11 and 21 are O: “D type not updated”, 1: “D type updated”,
2: means "S type". In the initial state, F = O or 2. Information is physically recorded in the initial information section 13. The amount of information Srw that can be stored in the update information unit 12, the amount of information Sro that can be stored in the initial information unit 13 and the amount of information Ser that can be stored in the information recording unit 22 are Srw = Sro = Ser. That is, D
The type sector and the S type sector have the same apparent stored information amount. The operation of the control means 4 at this time will be described with reference to the flowchart shown in FIG.

(A) When information reproduction is requested for the target sector: (R10) Information reproduction operation starts (R11) Contents F of the information control unit in the sector are read.

(R12) If F = 2 (= S type), proceed to (R18).

(R13) If F = 1 (= D type updated), proceed to (R16).

(R14) The information reproducing means 2 is instructed to read the information in the initial information section 13.

Proceed to (R15) (R19).

(R16) The information reproducing means 2 is instructed to read the information in the update information section 12.

Proceed to (R17) (R19).

(R18) The information reproducing means 2 is instructed to read the information in the information recording section 22.

(R19) Information playback operation ends.

(B) When information recording is requested for the target sector: (W10) Information recording operation starts (W11) Content F of the information control section in the sector is read.

(W12) If F = 2 (= S type), proceed to (W16).

(W13) The content of the control information section 11 is F = 1 (= D type already updated)
Change to.

(W14) The information recording means 3 is instructed to write the information in the update information section 12.

Go to (W15) (W17).

(W16) The information recording means 3 is instructed to write the information in the update information section 12.

(W17) Information recording operation completed.

FIG. 4 is a second example showing the structure in the sector. In FIG. 4, 30 is a D-type sector, 31 is a control information part, 32 is an update information part, 33 is an initial information part, 40 is an S-type sector, 41 is a control information part, and 42 is an information recording part. . The control information section 21 has a recording mode F, a correction position A, and a correction length L. Recording mode F
Has the same meaning as in FIG. Also, Srw ≦ S
Let ro = Ser, and the correction length L ≦ Srw. The operation of the control means 4 at this time will be described with reference to the flowchart shown in FIG.

(A) At the time of requesting reproduction of information for the target sector: (R20) Start of information reproduction operation (R21) Read the contents of the information control section in the sector.

(R22) If F = 2 (= S type), proceed to (R2a).

(R23) If F = 1 (= type D already updated), proceed to (R26).

(R24) The information reproducing means 2 is instructed to read the information in the initial information section 33 into the internal buffer X.

Proceed to (R25) (R2b).

(R26) The information reproducing means 2 is instructed to read the information in the update information section 32 into the internal buffer Y.

(R27) The information reproducing means 2 is instructed to read the information in the initial information section 33 into the internal buffer X.

(R28) The information of the correction length L from the correction position A in the internal buffer X is replaced with the corresponding information in the internal buffer Y.

Proceed to (R29) (R2b).

(R2a) The information reproducing means 2 is instructed to read the information in the information recording section 42 into the internal buffer X.

(R2b) End of information playback operation.

(B) When information recording is requested to the target sector: (W20) Information recording operation starts (W21) Contents of the information control section in the sector are read.

(W22) If F = 2 (S = type), proceed to (W = 26).

(W23) F = 1 (= D type already updated) is stored in the control information section 21, and the correction position A and the correction length L of the information to the initial information section 23 are stored.

(W24) The information recording means 3 is instructed to write the information and the update information section 32 to write the correction information.

Go to (W25) (W27).

(W26) The information recording means 3 is instructed to write the information in the information recording section 42.

(W27) Information recording operation completed.

In the present embodiment, for convenience of description, the initial state of the control information 11 or 31 is F = O and rewritable, but physically F = O.
It can also be set to O and can be made exclusively for reproduction. 2 and 3, the D-type sector i0 is formed in the order of the update information part i2 and the initial information part i3, but the order is not limited to this order (i = 1, 1, In the case of FIG. 3, i = 3). Also,
Although the block is a sector, another correspondence is possible.

The arrangement of the D-type sector and the S-type sector in the recording medium 1 may be dispersed as shown in FIG. 6 (a), but if separated at a certain track as shown in FIG. 6 (b), control information will be obtained. The type can be recognized without having the identification information of D type or S type inside. Further, if the recording medium can determine whether or not the information is recorded / erased (= erased / recorded) in the information updating section of the D-type sector, the information of “unupdated” / “updated” in the information control section is set. It can be omitted and a substitute judgment can be made.

As described above, according to the present invention, an optical disc having an information area having different properties is used in the same medium, and information is physically recorded when a product is provided to provide at low cost. It is possible to electrically correct the deficiency of information at the time of dynamic recording and to add, correct and supplement information by the user, and its practical effect is great.

[Brief description of drawings]

FIG. 1 is a block diagram of an information recording / reproducing apparatus of an embodiment of the present invention, FIG. 2 is an explanatory diagram of a first configuration example in a sector, and FIG. 3 is a first sector configuration (FIG. 2). FIG. 4 is a flow chart for explaining the operation of the control means, FIG. 4 is an explanatory view of a second configuration example in the sector, and FIG. 5 is a flow chart for explaining the operation of the control means in the second sector configuration (FIG. 4). FIG. 6 is an explanatory diagram of an arrangement example of information recording areas in the recording medium. 1 ... Recording medium, 2 ... Information reproducing means, 3 ... Information recording means, 4 ... Control means, 10,30 ... D-type sector, 11, 21 ...
… Control information part, 12, 22 …… Update information part, 13, 23 …… Initial information part, 20, 40 …… S type sector, 21, 41 …… Control information part, 2
2,42 …… Information recording section.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshiyuki Iwamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Takashi Ishida 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 56) References JP 59-154652 (JP, A) JP 59-183450 (JP, A) JP 60-74020 (JP, A) JP 56-140455 (JP, A) Nikkei Byte , [6] (1985-3) PP. 72-80.

Claims (1)

[Claims] 1. An optical recording medium having an information recording area, which is a read / write block unit and is continuously addressed, wherein the information recording area has a control information section, an update information section, and an initial information section. An information recording area and a second type information recording area in which the information recording area has a control information section and an information recording section are arbitrarily included, and information is reproduced from the first type information recording area and the second type information recording area. Information reproducing means for recording, information recording means for recording information in the first type information recording area and the second type information recording area, and information in the control information section during information reproduction is "first type information recording area When it indicates "update", the information is reproduced from the initial information part of the first type information recording area, and when it indicates "first type information recording area and already updated", the first type information recording Area update information When the information is reproduced from the information recording section and indicates that it is the "second type information recording area", the information is reproduced from the information recording section of the second type information recording area, and when the information is recorded, the information of the control information section is " When it indicates that it is a “first type information recording area”, the information control unit of the first type information recording area is changed to “first type information recording area and already updated”, and
The information is recorded in the update information section of the seed information recording area, and when the information is indicated as "second kind information recording area", the information is recorded in the information recording section of the second kind information recording area. An information recording / reproducing apparatus comprising: a reproducing unit and a control unit having a function of controlling the information recording unit.