JPH03288358A - Information processor - Google Patents

Abstract

PURPOSE:To realize various processings by storing a recording start address and maximum allowable recording position information and sending a reception complete signal to a host device. CONSTITUTION:A host device 6 recognizes the address under successive recording so that the other information already recorded in a rear recording area can not be erased with the recording of new information. When an address corresponding to the maximum allowable recording position information is reached while recording music information or the like by a recording means composed of an optical head 4 and a coil 5, recording is forcedly stopped by a controller 13. On the other hand, when it is instructed from the device 6 to an information recording and reproducing device to stop recording with the end of the information to be recorded or with the recording stop instruction, etc., of a user before reaching the address corresponding to the maximum allowable recording position information, recording is stopped by the controller 13. Thus, unrecorded areas are grasped without erroneously erasing the rear recorded information.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a higher-level device and to a rewritable recording medium such as various rewritable optical disks based on address specification from the higher-level device. The present invention relates to an information processing device including an information recording and reproducing device that records and reproduces various information such as information.

[Conventional technology]

Conventionally, so-called compact discs (hereinafter referred to as CDs) on which continuous information such as music information is recorded as digital signals using optically detectable minute pits have been widely used. This CD is played back by a playback-only CD player.

FIGS. 9 and 10 are schematic diagrams for explaining the signal format used in CDs. As shown in FIG. 9, one frame 31a of the recording signal includes a frame synchronization signal 31b indicating the beginning of the frame, a subcode 31C (details will be described later) which is additional information regarding data, and 2 which is main information.
The data field 31d is composed of 4-byte data and a parity code for error detection and correction. In addition,
The data in the data field 31d is C
IRC (Cross Interleaved R)
Errors are detected and corrected using an error detection and correction method with incomplete interleaving called ``Solomon Code''.

As shown in FIG. 10, 98 frames (1 sector 32a
(Constituting one sub-coding frame) sub-codes 31c are one sub-coding block 32
This sub-coding block 32c indicates track numbers (called song numbers when the data is music information), absolute address information on the disc, and the like. Note that the frame synchronization signal 32b and data field 32d represent a state in which the frame synchronization signal 31b and data field 31d of FIG. 9 are assembled for 98 frames, respectively.

■The length of the sector 32a, that is, the sector length is, for example,
13.3 [:mS), 75 sectors equals 1 second. At this time, the sector number on the disk can be expressed by a combination of ``minute'', 2 ``second'', and ``sector number within 1 second (i.e., any value from 00 to 74)'' based on the time. This sector number contains continuous time information and position information that increase sequentially from the innermost circumference of the disk.

FIG. 8 is a schematic diagram showing the arrangement of areas on a CD disc. The disk 33 has a main information recording area 33a that includes main information such as music information and sector numbers based on the subcodes, and additional information regarding each piece of main information recorded in the main information recording area 33a, such as track numbers and track numbers. It is made up of a T○C (Table of Contents) area 33b in which the recording start sector number, etc. of the data is indicated by a subcode.

Due to the above format, in CD players,
By reading the subcode information in the TOCSI area 33b when loading the disc 33, the number of each main information (equivalent to the number of songs in the case of music information) and the sector number of the recording start position are recognized, and the subsequent Access to a desired track in response to a playback instruction is performed using the subcode information read from the TOCeM area 33b and the main information recording area 33a.
This is quickly executed by comparing the subcode recorded in the sector number with the sector number.

The above CD records at a constant linear velocity (CLV (Cons).
Since the recording is performed using the tant linear velocity) method, the recording density is constant at any radial position on the disk 33, thereby making it possible to improve the recording capacity. In an actual CD player, during playback, the rotation of the disk 33 is controlled so that, for example, the interval between frame synchronization signals in the playback signal from a CD recorded in the above signal format becomes a reference length. CLV control is realized.

On the other hand, when recording and using various information such as music information or computer information on rewritable optical disks such as magneto-optical disks, which have been developed in recent years, conventional CDs or C
D-ROM (Compact Disk Read
It is desirable to provide a compatible information recording and reproducing device by making the reproducing method common between the two (0nly Memory).

In this case, especially for unrecorded optical discs, the C
Since there is no frame synchronization signal that can be used for absolute address or CLV control using subcodes in the D signal format, access operations to arbitrary sector positions prior to recording cannot be performed, and Necessary CLV control becomes impossible.

Therefore, as an absolute address recording method that replaces the sub-code recording, after high-phase mark modulation of the absolute address, the guide groove of the optical disc is adjusted to the radius according to whether each bit is "°O" or "1". It has been proposed that the guide groove is biased inward or outward, or the width of the guide groove is changed (see Japanese Patent Laid-Open No. 1-39632).

In that case, the frequency band of the absolute address by pi-phase mark modulation and E F M (Eight t.

(Fourteen Modulation) By making the frequency band of the recorded information that has been modulated different, it is possible to reproduce the two separately from each other, and even in areas where there is no recorded information, recording can be performed by biasing the guide groove, etc. An access operation is possible using the above absolute address. or,
As for CLV control, accurate speed control is possible by using the reproduced carrier component of the above-mentioned absolute address, and this CLV control can be performed even during recording.

The information recording and reproducing apparatus that records and reproduces information on a rewritable optical disc that is compatible with CDs is, for example, attached to a host device such as a home computer in a general household, and can be used to record music information, etc. It is conceivable to use it for high-density recording of a wide variety of information such as text information and image information.

In that case, in order to make address management by the host device easier, it may be possible to record and reproduce information in block units, for example, with a predetermined number of sectors in the recording area of the rewritable optical disc as one block. It will be done.

[Problem to be solved by the invention]

By the way, when recording information with undetermined recording length such as music information on a rewritable optical disc based on address specifications such as block numbers from a host device, if only the recording start address is specified, the recording area at the rear can be recorded. If there is other information already recorded in the , there is a risk of accidentally erasing that information.

On the other hand, in order to avoid erasing the rear information, it is possible to have the host device recognize the addresses that are being recorded sequentially and end the recording of music information, etc. on the front side based on the recording start address of the rear information. Although the subsequent information is not lost, a problem arises in that the host device is unable to perform any other processing other than recording the music information, etc. during the recording period of the music information, etc.

[Means for Solving the Problems] In order to solve the above problems, an information recording and reproducing device according to the present invention uses a host device that performs information processing and a rewritable recording medium on which addresses are recorded in advance. and an information recording and reproducing device that records and reproduces information based on instructions from a higher-level device, wherein the information recording and reproducing device records a recording start address and a maximum allowable recording position instructed by the higher-level device. a storage means for storing information; a first transmission means for transmitting a reception completion signal indicating that the recording start address and maximum recording permissible position information have been received and stored to the host device; and recording information from the recording start address. a recording means, a first recording stop means for stopping recording when a recording position corresponding to the maximum recording permissible position information is reached, and a second recording stop means for stopping recording when an instruction to stop recording is received from a host device; , a second transmitting means for transmitting the address of the stop position to the host device when recording is stopped based on a recording stop instruction from the host device.

[Function] According to the above configuration, the information recording/reproducing device can store information such as music information whose recording length is difficult to know in advance on a rewritable recording medium based on an instruction from a host device. When recording, the host device uses the recording start address and maximum allowable recording position information (specifically, for example, the forced recording end address (an address that forcibly ends recording even if the information to be recorded has not ended). ) or the maximum allowable recording length (meaning a recording length that forcibly ends recording even if the information to be recorded has not finished), and as new information is recorded, subsequent recording (set to prevent other information already recorded in the area from being erased) to the information recording and reproducing device, the storage means of the information recording and reproducing device stores them, and the recording means records them. At the same time, a reception completion signal indicating that the instruction to start recording has been received is sent to the second-level device. On the other hand, after receiving the reception completion signal, the host device can perform various processes other than the ongoing recording of music information and the like.

If the address corresponding to the maximum allowable recording position information is reached while recording music information etc. by the recording means,
Recording is forcibly stopped by the first recording stop means. This prevents backward recorded information from being accidentally erased.

In addition, before the address corresponding to the maximum allowable recording position information is reached, the information to be recorded ends or the user instructs the information recording/reproducing device to stop recording, and the host device instructs the information recording/reproducing device to stop recording. If so, the second recording stop means stops recording.

In that case, the second transmitting means transmits the address of the recording stop position to the host device. Thereby, the host device can grasp the unrecorded area remaining after recording.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

As shown in FIG. 6, the magneto-optical disk 1 as a rewritable recording medium used in the information recording and reproducing apparatus included in the information processing apparatus of this embodiment has a TOC on its inner edge.
An area 1a is provided, and most of the area closer to the outer periphery than the Toc61 area 1a is an information recording area 1b. In the information recording area ib, for example, in addition to music information, various information such as text/image information, code data, etc. are recorded, while in the TOCTiff area 1a, information recording area 1b is recorded.
Additional information related to each piece of information recorded in the information, for example, each block number of a recording start block (described in detail later) and a recording end block for each piece of information, etc., are recorded.

As shown in FIG. 7, Toc on the magneto-optical disk ■
, +1 area 1a and information recording area 1b, spiral guide grooves 2, 2, . . . (shown by hunting for convenience) are formed in advance at predetermined intervals in the disk radial direction. Then, after pi-phase mark modulation, the absolute address on the disk is determined by moving the guide grooves 2, 2, etc. in the radial direction of the magneto-optical disk 1, depending on whether each bit is 1'' or 0. It is recorded by deflecting it outward or inward.

The above absolute address represents the position on the disk and is also used as rotation control information when performing CLV control and the like. Incidentally, since the absolute address in this embodiment corresponds to each sector in the above-mentioned CD format, the absolute address will hereinafter be referred to as a physical sector number.

The information recording and reproducing apparatus of this embodiment is used by being incorporated into an information processing apparatus such as a home computer or a personal computer, and as shown in FIG. 3, an optical head 4 that irradiates laser light onto the magneto-optical disk 1 during recording and reproduction, and a coil 5 that applies a magnetic field to the magneto-optical disk 1 during recording. Optical head 4 and coil 5
has the role of a recording means.

This information recording and reproducing apparatus is configured to perform recording using a so-called magnetic field modulation method, and is also capable of performing an override in which new information is recorded on top of already recorded information. Further, this information recording and reproducing apparatus is configured to perform human output such as text, image information, or various control information via an interface 18 with a host device 6 that controls information processing. The host device 6 processes text, image information, etc., causes the information recording and reproducing device to record and reproduce various information, and also allows the information recording and reproducing device to receive music information from an audio device (not shown). It is designed to specify an address when recording. The information recording and reproducing device includes an input terminal 22 used for inputting music information from the audio device, and an output terminal 24 used for outputting music information to the audio device.

When recording text/image information etc. supplied from the host device 6, the text/image information etc. input to the interface 18 is sent to the switching circuit 19 as digital data f. The switching circuit 19 switches between the digital data f from the interface 18 and the additional data e (described later) from the sector data generation circuit 20, and the digital data f to which the additional data e is added becomes the recording signal. The signal is supplied to a processing circuit 7.

In the recording signal processing circuit 7, parity for error detection and correction is generated and added to the digital data h, subcode information from the subcode generation circuit 17 is added, EFM modulation is performed, and a frame synchronization signal is added. is added and supplied to the coil driver 8. Based on the supplied signal, the coil driver 8
Signals are recorded by driving the coil 5 and simultaneously irradiating the magneto-optical disk 1 with laser light from the optical head 4. Note that the signal format here is, for example, the conventional example shown in FIGS. 9 and 10.
It can be similar to what is shown in the figure.

Furthermore, when recording music information from the audio device, analog music information input via the input terminal 22 is transferred to an A/D (analog/digital) converter 21.
is converted and supplied to the switching circuit 19 as digital data g. In this case, the additional data e from the sector data generation circuit 20 is not added, and the digital data g is directly supplied as the digital data h to the recording signal processing circuit 7, and the recording process is thereafter performed in the same procedure as above. It is something.

On the other hand, text/image information or music information, etc. reproduced by the optical helad 4 is amplified by a reproduction amplifier 10 and sent to a pre-recorded information detection circuit 11 and a reproduction signal processing circuit 15. The pre-recorded information detection circuit 1 (for example, is composed of a band-pass filter and a PLL, and the PLL generates a synchronized clock with respect to the pre-recorded information in the reproduced signal extracted by the band-pass filter. ing.

Then, a clock synchronized with the pre-recorded information consisting of an absolute address pi-phase mark modulation signal is supplied to the CLV control circuit 9.

The CLV control circuit 9 compares the synchronized clock from the prerecorded information detection circuit 11 with an internally held reference frequency, and uses the difference signal to control the rotation of the spindle motor 3. . This allows accurate C
LV control is realized. Moreover, the pre-recorded information detection circuit 11
The pre-recorded information in the reproduced signal extracted in is supplied to the address detection circuit 12.

The address detection circuit 12 includes, for example, a pi-phase mark demodulation circuit and an address decoder, and after performing pi-phase mark demodulation of the pre-recorded information extracted by the pre-recorded information detection circuit 11, the address decoder performs the pi-phase mark demodulation of the pre-recorded information extracted by the pre-recorded information detection circuit 11. That is, it is decoded into a physical sector number (absolute address), and this physical sector number is supplied to the controller 13.

The reproduced signal processing circuit 15 performs EFM demodulation from the magneto-optical signal component in the reproduced signal supplied from the reproduced amplifier IO, and further performs error detection and correction processing using parity for error detection and correction. If the information that has been reproduced is text/image information, etc., that information is transferred to the interface 1.
8 to the host device 6. On the other hand, if the reproduced information is music information, it is converted into analog information by a D/A (digital/analog) converter 23 and then output to the audio device via the output terminal 24.

The subcode information EFM demodulated by the reproduced signal processing circuit 15 is supplied to the subcode detection circuit 16, and the subcode information recognized by the subcode detection circuit 16 is supplied to the controller 13. The controller 13 receives the physical sector number from the address detection circuit 12 and detects the magneto-optical disk 1.
It has an access function that recognizes the position of the optical head 4 above and moves the optical head 4 and coil 5 to a predetermined position using a moving mechanism (not shown) for the optical head 4 and coil 5. Further, the controller 13 is configured to select subcode information supplied from the subcode detection circuit 16 and store it in the TOC memory 14, or to continue reading the contents of the TOC memory 14.

Furthermore, when recording music information, the controller 13
Information such as the block number of the recording start block included in the recording instruction command from the host device 6 given via the interface 1 is stored in the TOC memory 14, which serves as a storage means, and the recording instruction command is received. It has a role as a first transmitting means for transmitting a reception completion signal indicating that necessary storage has been performed to the host device W6.

In addition, when recording music information, the controller 13 serves as a first recording stop means that forcibly stops recording even if recording is in progress when a preset forced recording end block (described later) is reached, and when music information is recorded. It has a role as a second recording stop means that stops the recording of the music signal when it receives a recording stop command from the host device 6 in response to the end of the music information or the user's instruction to stop recording. There is. Further, the controller 13 has a role as a second transmitting means for transmitting the block number of the block at the recording stop position to the upper bag W6 when recording of the music information is stopped based on the recording stop command.

The subcode information in the TOC memory 14 is supplied to the subcode generation circuit 17 as necessary, where a subcode is generated and subjected to EFM modulation in the recording signal processing circuit 7.
It is supplied to the coil driver 8. As a result, the subcode information in the TOC memory 14 is transferred to the magneto-optical disk lOT.
It is recorded in the OCfil area 1a.

FIG. 3 is a schematic diagram showing the information arrangement when character information etc. supplied from the host device 6 is recorded on the magneto-optical disk 1 by this information recording/reproducing device. It shows the sector configuration of the block. As shown in I in the same figure, each block 2 is given a block number such as BO, Bl, B2, etc., and as shown in As a standard, "minute": "second": "sector number within one second (in this example, 75 sectors are included in one second, so 00 to 74
A physical sector number is assigned to the first sector of the block with block number BO. is given.

When recording character information, etc., the controller 13, in response to a recording command for a predetermined block number range given from the host device 6 via the interface 18, determines which value of the actual physical sector numbers the predetermined block number range corresponds to. Perform the calculation. A concrete explanation using the example of FIG. 3 is as follows.

For example, when the host device 6 issues a recording instruction command for blocks with block numbers B1 to B3, the number of sectors per block is "°8", and as mentioned above, the number of sectors per block is "°8", and as described above, It is predetermined that the first physical sector number is given as (01:00:00), so the first physical sector number of the block with block number B1 where recording starts is (01:0).
0:00) + block number (1) x number of sectors (8) - (
01:00:O8), and the first physical sector number of the block with block number B1 can be easily obtained.

After performing necessary access operations etc. for the physical sector number obtained as described above, the sector data generation circuit 2
Additional data e consisting of additional data d1 to be recorded in the front additional sector n1 given by 0 and additional data d2 to be recorded in the rear additional sector n2, and character information from the host device 6 given via the interface 18. Digital data f consisting of data DI, D2, .

As described above, the host device 6 such as a home computer etc.
By specifying only the block number, the information recording/reproducing device can add additional sectors and record character information, etc., and the recorded blocks can be rewritten independently in block units. It is possible to do this.

Regarding the area management of the recorded text information etc. da, the host device 6 may allocate a predetermined block to the area management information itself and record it through the same operation as when recording the text information etc. da. , and the controller 13 and TO
The signal may be converted into a predetermined format by the subcode generation circuit 17 via the C memory 14, and then supplied to the recording signal processing circuit 7 for recording. In the case of the latter method, the TOCfin area 1a is normally used as a recording area for area management information.

Next, the recording operation of music information will be explained based on FIG. In the figure, ■ indicates a block configuration, and ■ indicates a sector configuration, and as described above, the data dg of the second block is composed of eight sectors. Also, ■ indicates the music information db to be recorded.

When recording music information db, 8 blocks per block.
All sectors are treated as valid sectors, and music information db is continuously recorded in a predetermined block range.

By the way, when recording continuous information such as music information db whose recording length is difficult to know in advance, for example,
) If other information C is recorded in the recording area after the recording start block with block number Bs, it is necessary to prevent the information C from being destroyed by newly recorded music information db or the like.

Therefore, in this embodiment, if other information C exists in the rear recording area, the information C is
A forced recording end block with block number Bi (maximum recording permissible position information) is set before the recording start block (block number Bj), and recording of the music information db does not end before reaching this forced recording end block. In case,
Even if recording is in progress, recording is forced to end using the forced recording end block.

That is, when recording the music information db, first, a recording instruction command is given by the host device 6 via the interface 18 (H1 in FIG. 1). Controller 1
In step 3, calculations are performed to convert the block number Bs of the recording start block and the block number Bi of the forced recording end block included in this recording instruction command into actual physical sector numbers As and Ai (M1 )
, the obtained physical sector numbers As and Ai are stored in TOC memory 1.
4 to be memorized. The calculation of the physical sector number will be specifically explained using the example shown in FIG. 4 as follows.

For example, if block number B5625 is specified as the block number Bs of the recording start block from the host device 6, the number of sectors per block is "8", and
Since it is predetermined that the physical sector number of the first sector of the block with block number BO is given by (Ol:00:00), the block number 856 to start recording is
The physical sector number of the first sector of block 25 is (0
1:00:00) + block number (5625) x number of sectors (8) = (01:00:00) + 45000 = (1
1: 00: 00), easily block number 5.
The physical sector number of the first sector of the 625 block can be obtained.

Similarly, if block number B6895 is specified as the block number Bi of the forced recording end block,
A physical sector number is calculated for this block number 86895 in the same manner as above.

When the physical sector number As-A1 corresponding to the block number Bs-B1 of the recording start block and forced recording end block is determined and stored in the TOC memory 14 as described above, the controller 13 sends a recording instruction command to the host device 6. Sends a reception completion signal indicating that reception is complete (M in Figure 1)
2) At the same time, the necessary access operation is executed for the physical sector number As. Thereafter, music information db in the form of an analog signal input from an audio device (not shown) to the input terminal 22 is converted into digital data g by the A/D converter 21, and then transferred to the recording signal processing circuit as digital data h via the switching circuit 19. 7, the desired music information db is continuously recorded after the physical sector number (11:00:00) corresponding to the first sector of the block with block number B5625 (M3
).

On the other hand, after issuing the recording instruction command, the upper bag W6 determines whether or not it has received the reception completion signal from the information recording/reproducing device (H2), and if it receives the reception completion signal, it then records the music information db. Various other processes such as displaying images or text information on an attached display, processing of various information, input/output processing of various information, etc. can be performed (H3).

In addition, after the information recording and reproducing device starts recording the music information db, it determines whether a recording stop command has been issued from the host device 6 (H4), and if the recording stop command has not been issued, the physical Read sector number (H5)
to determine whether the physical sector number Ai corresponds to the block number Bi of the forced recording end block (
H6).

If the physical sector number of the current recording position is not At, H
Return to step 4 and repeat the above steps. If the physical sector number of the current recording position is Ai, recording will be stopped even if the music information db has not finished in order to protect the backward information C (H7 and (See Figure 2).

The host device 6 issues a recording stop command when the music information db is completed or when the user instructs to stop recording (H4). When this recording stop command is issued, the determination at H4 in the information recording/reproducing apparatus becomes Yes, and accordingly, the recording is terminated by the controller 13 (see H8 and FIG. 2(C)). Then, the physical sector number Ae at the recording end position is read, and after the physical sector number Ae is converted to the block number Be by the reverse calculation to that described above (H9), the block number Be of this recording end block is Sent to host device 6 (MIO)
.

The host device 6 uses the block number Be of the recording end block.
is received, and the area management information is updated accordingly (H
5). That is, the area management information sent from the host device 6 passes through the controller 13 and TOC memory 14, is converted into a predetermined format by the subcode generation circuit 17, and is then supplied to the recording signal processing circuit 7 and recorded. In this case, the TOCSI area 1a is used as a recording area for area management information.

To reproduce the text information etc. da or music information db recorded in the above manner, a reproduction instruction command accompanied by a block number of the reproduction area is sent from the host device 6 to the interface 18.
The data is sent to the controller 13 via the controller 13, where it is converted into a physical sector number similar to that described above, and then executed through necessary access operations.

When the reproduction information is text information etc., the reproduction signal from the optical head 4 is transmitted to the reproduction amplifier 1.
The reproduced signal processing circuit 15 performs EFM demodulation on the magneto-optical signal component in the reproduced signal, and further performs error detection and correction processing using parity for error detection and correction. In this error detection and correction operation, the additional data e in the front additional sector d1 and the rear additional sector d2 in FIG.
The effective sector dd is also reproduced using the . Of the reproduced signal data, only data D1, D2, etc. of four sectors corresponding to the valid sector dd are outputted to the host device 6 via the interface 18 for each block. .

Further, when the reproduction information is music information db, the reproduction signal from the optical head 4 is reproduced by the reproduction amplifier 10, and the reproduction signal processing circuit 15 converts the magneto-optical signal in the reproduction signal to explain using the example of FIG. After EFM demodulation is performed on the signal component and further error detection and correction processing using parity for error detection and correction is performed, analog music information is sent to the audio device via the D/A converter 23 and the output terminal 24. Output as db.

As described above, the host device 6 itself becomes capable of recording and reproducing text information, music information, etc. using blocks without adding additional sectors necessary for recording and reproducing using the non-contained interleaving method. , the recorded information can be rewritten in block units.

In the above embodiment, if there is already recorded information C at the rear when recording the music information db, the information C is erased by specifying the block number Bi of the forced recording end block as the maximum allowable recording position information. However, instead of this, for example, the maximum allowable recording length may be specified as the maximum allowable recording position information.

Furthermore, in the above embodiment, music information was explained as an example of information for which it is difficult to know the recording length in advance, and therefore protection of other recorded information must be considered.
Alternatively, the present invention is also effective, for example, for recording audio information in an electronic still camera capable of recording audio information.

Further, in the above embodiment, one block is composed of eight sectors, but this is a numerical value used for convenience of explanation, and the block size can be changed in various ways as necessary.

The absolute address (physical sector number) may be in any form, such as a pit format, as long as it is pre-recorded and recognizable information.

Furthermore, although the above embodiment has been explained using a magneto-optical disc-shaped recording medium, it is also applicable to other rewritable recording media. Even if the present invention is a recording medium of any shape, it is possible to implement the present invention without departing from the spirit of the present invention.

〔Effect of the invention〕

As described above, the information processing device according to the present invention includes a host device and an information recording and reproducing device, and the information recording and reproducing device stores a recording start address and maximum recording permissible position information instructed by the host device. a storage means; a first transmission means for transmitting a reception completion signal indicating that the recording start address and maximum recording permissible position information have been received and stored; and a recording means for recording information from the recording start address; A first recording stop means that stops recording when a recording position corresponding to the maximum recording permissible position information is reached; a second recording stop means that stops recording when a recording stop instruction is received from a host device; This configuration includes second transmitting means for transmitting the address of the stop position to the host device when recording is stopped based on the recording stop instruction.

As a result, when recording information such as music information whose recording length is difficult to know in advance on a rewritable recording medium, the recording start address and maximum allowable recording position information sent from the host device can be used by the information recording and reproducing device. When the information is stored in the storage means, a reception completion signal is sent to the host device, and after receiving the reception completion signal, the host device can perform various processes other than recording music information and the like.

In addition, before recording music information, etc., maximum allowable recording position information is given in order to protect information that has already been recorded after the recording start position. When the recording position corresponding to the recording position information is reached, recording is forcibly stopped by the first recording stop means.

This has the effect of reliably preventing erroneous erasure of recorded information at the rear.

[Brief explanation of the drawing]

1 to 7 show one embodiment of the present invention. FIG. 1 is a flowchart showing the processing procedure of the host device and the information recording and reproducing device when recording music information. FIG. 2(a) is an explanatory diagram schematically showing designation of a recording start block and a forced recording end block at the time of starting recording of music information. (in the same figure) is an explanatory diagram showing a state in which recording of music information ends at a forced recording end block. FIG. 4C is an explanatory diagram showing a state in which recording of music information ends before the forced recording end block. FIG. 3 is an explanatory diagram showing the block configuration and sector configuration when recording character information, etc. FIG. 4 is an explanatory diagram showing the block configuration and sector configuration when recording music information. FIG. 5 shows the countries that constitute the blocks of the information recording and reproducing device. FIG. 6 is a schematic plan view of the magneto-optical disk. FIG. 7 is an enlarged plan view of the same. 8 to 10 show conventional examples. FIG. 8 is a schematic plan view of the compact disc. FIG. 9 is a schematic diagram showing the frame signal format of a compact disc. FIG. 10 is a schematic diagram showing the sector format of a compact disc. 1 is a magneto-optical disk (rewritable recording medium), 4 is an optical head (recording means), 5 is a coil (recording means), 13 is a controller (first and second transmission means and first and second recording stop) 14 is a TOC memory (storage means).

Claims (1)

[Claims] 1. An information recording and reproducing device that uses a host device that performs information processing and a rewritable recording medium on which addresses are recorded in advance, and records and plays information based on instructions from the host device. In an information processing apparatus, the information recording and reproducing apparatus includes a storage means for storing a recording start address and maximum recording permissible position information instructed by a host device; and a storage means for storing the recording start address and maximum permissible recording position information. a first transmitting means for transmitting a reception completion signal to the host device indicating that the information has been stored in the rewritable recording medium; a recording means for recording information from the recording start address on the rewritable recording medium; and a recording means corresponding to the maximum recording permissible position information. a first recording stop means that stops recording when a recording position is reached; a second recording stop means that stops recording when a host device instructs the host device to stop recording; A second device that sends the address of the stop position to the host device when the device stops.
An information processing device comprising: a transmitting means.