JPS63275076A - Information recording and reproducing medium - Google Patents

Abstract

PURPOSE:To execute a reading and a writing mounted between tracks by providing a track format in which a sector arrangement in the track is successive and the dislocation of the sector according to a head moving time between the tracks is provided. CONSTITUTION:The track format in which the leading sector of the (N+1)th track is placed at a position dislocated by a time required for a seek from the final sector of at least the Nth track is provided and the track format having the relation between the Nth track and the (N+1)th track is provided on all the track groups. Namely, at the time of a processing mounted between the tracks, the track format in which the position of the leading sector of the (N+1)th track is dislocated by the time required for the seek is provided so as to move from the final sector of the Nth track to the leading sector of the (N+1)th track at the same rotating cycle as a seek operation, thereby, the generation of an excessive rotational delay can be prevented at the time of processing mounted between the tracks.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an information recording and reproducing medium having a track structure in which a storage area for recording and reproducing data is composed of a plurality of sectors.

BACKGROUND ART FIG. 6 shows the track format of a conventional information recording/reproducing medium (assuming that one track has 16 sectors), in which sectors within a track are arranged in address order.
The sector arrangement is such that all the leading sectors of the tracks of the entire medium are located at the same position.・8B1. (Foundation)・2. (
wealth)・・16泗is SB・・・・・・S
B The 1st sector (first sector), 2nd sector, ..., 16th sector (last sector) of the Nth track o
SB1, (N+1)%”B2, (N+1
)-1”””5SB16.(N+1) is the number (No.1)
) The first sector (first sector) of the rack, the second sector,
. . . is the 16th sector (final sector). 6th
The figure is a transformation from the circular display in Fig. 6 to a strip-like display. Originally, the right and left ends of the same track were adjacent, but the 6th
One square in the figure contains a sector address. This figure shows, as an example, the arrangement of sectors when one track has 16 sectors. When recording and playing back information recording/playback media with this conventional track format,
Since the sectors are continuous, consecutive sectors within a track can be processed at high speed.

FIG. 7 shows the track format of the second conventional information recording/reproducing medium (assuming that there are 16 sectors in one track), in which sectors within a track are arranged in an interleaved manner, and the beginning of the track of the entire medium is All sectors are arranged in the same position. SC1, (N),
SC2, (N), 5C16, (Nl is the first sector (first sector) of the Nth track, the second sector,
. . . is the 16th sector (last sector). S
C1, (N+1), S02. (N+1),...
, 5C16, (N+1) is the first track of the (N+1)th track.
They are a sector (first sector), a second sector, . . . , a 16th sector (last sector). Figure 8 is a transformation from the circular display in Figure 7 to a strip display. Originally, the right and left ends of the same track were adjacent, and each square in Figure 7 contained a sector address. There is. This figure is -
As an example, the sector arrangement is shown when one track has 16 sectors and an interleaving interval of 4 sectors is provided.

When recording/reproducing an information recording/reproducing medium having this second conventional track format, each sector is read/reproduced in order.
When performing write processing, the overhead time of software processing for each sector and the interval of sector transfer time are
Since it is prepared between the processing sector and the next sector, 1
Within a track, sequential processing of each sector can be performed at high speed.

Here, the first. In the second conventional example, the addresses of the last sector of the first track (Nth track) and the first sector of the second track ((N+1)th rack) whose track number is one larger than that are consecutive. The head movement direction and address increase direction match.

Problems to be Solved by the Invention However, the above-mentioned configuration has a problem in that an extra rotational wait occurs during processing that spans between tracks.

In the first conventional example, when spanning between tracks in continuous sector processing, the second track ((N+th)
1)) The head moves in the rotational direction by the time required for the seek operation when moving to the first sector of the rack.
The second leading sector whose address is 1 larger than the final sector of the first sector is passed through too much. That is, the last sector 5B1e of the Nth track, the first sector SB1 of the (N) to (N+1))th racks. It is not possible to move to (N+1) in the same rotation cycle as the seek operation, and only after about - rotations.
First sector of the track SB1. (N+1) cannot be discovered.

In the second conventional example, in the case of sequential processing for each sector, when spanning between tracks, from the last sector of the Nth track to the (Nth
e1)) Since the head moves in the rotational direction by the time required for the seek operation when moving to the first sector of the rack, if the seek time is longer than the time between sectors opened for interleaving, the last sector of the Nth track Sector 5016. (N)
It is not possible to move to the first sector SC1, (N+1) of the track in the same rotational cycle as the seek operation, and only after about - rotations to the first sector SC4, (N+1) of the (N+1)th rack.
1) cannot be discovered.

In view of this, the present invention provides a system for the (N+1)th) rack so that it can move from the last sector of the Nth track to the first sector of the (N+1)th track in the same rotational cycle as the seek operation during processing that spans between tracks. An object of the present invention is to provide an information recording/reproducing medium having a track format in which the position of the first sector of the data is shifted by the time required for seeking.

Means for Solving the Problems The present invention has a track format in which the first sector of the (N+1)th rack is shifted at least from the last sector of the Nth track by the time required for seek,
and the Nth track and the (Nth
This information recording and reproducing medium is characterized in that it has a track format having the track relationship e1).

Operation The present invention can prevent unnecessary rotational waiting when performing processing that spans tracks by using the above-mentioned track format.

Embodiment FIG. 1 shows a track format of an information recording/reproducing medium in an embodiment of the present invention.

In Figure 1, there are 3".S A 1.(N).2,
(N)・°°°°°゛・SA −””A(m+1L(N)−161(N) is the 1st sector (first sector), 2nd sector of SA sector,····
. . . (m+1)th sector, . . . , 16th sector ← final sector). SA1, (N+1)
,”A2, (N+1), 5A16
．． (N+1) is the first sector (first sector), second sector, old, 16th sector (last sector) of the (N+1)th) rack. As shown in the figure, 5A16,
(N) 1 and (N+1) have a distance of m sectors and SA. The rotation time for m sectors is the time required for inter-track movement (seek operation).
The value of is set.

In Figure 2, the circular display in Figure 1 has been transformed into a strip display, and the right and left ends of the same track were originally adjacent to each other.
One square in FIG. 1 contains a sector address. This figure shows, as an example, a sector arrangement in the case where one track has 16 sectors and a seek operation requires an interval of 6 sectors.

In this example, the last sector of the first track (Nth track) and the second track (Nth track
The addresses of the first sector of the rack Ne1)) are continuous, and the direction of head movement and the direction of address increase are the same.

Regarding the information recording and reproducing medium of this embodiment having the track format as described above, formatting, recording, and reproducing for the medium of this format are performed using the operations of the information recording and reproducing apparatus (Fig. 3) that processes this medium. Explain how.

In FIG. 3, the address reading means 301 receives a signal (this signal is the sector I
means for reading an address from the D section reproduction signal 3o8), 30
Reference numeral 9 denotes a reproduced address signal read out by the address reading means 301, an address comparison means 302 compares the input target address signal 315 and the reproduced address signal 309, and determines whether or not they match; The control means 303 uses the input write signal 316 or read signal 317 as a recording/reproduction request instruction signal, and sends the reproduction request signal 3 to the reproduction means 304 as an address matching signal indicating a match between the addresses outputted by the address comparison means 302.
11, analyzes the reproduced sector signals 3 and 20 obtained in response to the request, and outputs a reproduced data signal 314; a function controls the output of the recording request signal 312 to the recording means 305; Formatting signal 3
18 as a formatting request instruction signal, the reproduction means 3 is a means having a function of controlling the output of the formatting request signal 313 to the formatting means 306 by the hardware common formatting function 321.
04 reproduces sectors in the information recording and reproducing medium 307 in response to a reproduction request signal 311 from the control means 303 and outputs the reproduction result as a reproduced sector signal 320, and sector ID of each sector in the information recording and reproducing medium 307.
The recording means 305, which is a means for reproducing the copy, is controlled by the control means 3.
The formatting means 306 is a means for recording the recording data signal 319, which is input data, onto the information recording/reproducing medium 307 in response to the recording request signal 312 from the control means 303.
This is means for formatting the information recording/reproducing medium 307.

In the information recording/reproducing device configured as above,
First, the information recording/reproducing medium 30 is
The sector ID part of each sector on 7 is read, and the sector ID part reproduction signal 308 is analyzed by the address reading means 301, and the reproduction address signal 309 is output to the address comparison means 302. The address comparing means 302 compares the target address signal 315, which is an external input, and the reproduced address signal 309, and if they match, the address matching signal 3
10 is output to the control means 303. Address match signal 3
10 and a write signal 3 which is an external request instruction signal.
16, read signal 317, and formatting signal 31
8, the control means 303 controls the information storage and reproduction medium 307.
Recording and playback.

Perform formatting.

The operation of the control means 303 will be explained below.

In the reproduction processing of the target sector, the control means 303 outputs a reproduction request signal 311 requesting reproduction from the control means 303 to the reproduction means 304, performs the above analysis on the obtained reproduction sector signal 320, and generates a reproduction data signal 314. get. Next, in the recording process of the target sector, the control means 303 outputs a recording request signal 312 requesting recording to the recording means 305.

In the formatting process, track formatting is performed. This function determines the sector interval between the last sector of the Nth track and the first sector of the (N+1)th rack according to the inter-track head movement time at each track position, and shifts the position of the first sector. It is. This inter-sector interval is set to be the longest waiting interval that does not cause rotational waiting. In addition, a formatting signal 3 which is an instruction signal from the software of the host system
18, the sector address within the track (each sector I
The addresses written in the D section can be arranged in physical order.

The reproduction means 304 receives the reproduction request signal 311 from the control means 303, performs sector reproduction of the information recording and reproduction medium 307, and outputs the reproduction result to the control means 303 as a reproduction sector signal 320.

The recording means 305 records a recording data signal 319, which is input data from the outside, onto the information recording/reproducing medium 307 in response to a recording request signal 312 from the control means 303. The formatting means 306 includes the control means 30
The address (sector address) of the sector ID portion of each sector in each track of the information recording/reproducing medium 307 is set by the formatting request signal 313 from 3.

As described above, according to this embodiment, when performing continuous sector processing using a track format in which the sectors within a track are continuous and the sectors are shifted according to the inter-track head movement time, when crossing tracks, It is possible to prevent the occurrence of extra rotational waiting.

FIG. 4 shows the track format of the information recording/reproducing medium according to the second embodiment of the present invention in a band-like manner, and each square in FIG. 4 contains a sector address. This figure shows, as an example, the arrangement of sectors in the case where one track has 16 sectors, a seek operation requires an interval of 6 sectors, and an interleaving interval of 4 sectors is provided.

In this second embodiment as well, the last sector of the first track (Nth track) and the requested sector of the second track ((Ne1)th rack) whose track number is one larger than the other have consecutive addresses. , the head movement direction and address increase direction match.

The processing of this second embodiment is also similar to that of the first embodiment (description of device operation using FIG. 3) except for formatting. The difference in formatting is that I-interleaving is performed every four sectors instead of a continuous sector arrangement.

As described above, according to the second embodiment, the sector arrangement in the track is incremented, and each sector is sequentially processed using a track format that shifts sectors according to the inter-track head movement time. In this case, when the vehicle straddles a track, it is possible to prevent the occurrence of an extra rotational wait.

As described in detail, according to the present invention, reading and writing across tracks can be performed at high speed, and its practical effects are significant.

[Brief explanation of drawings]

Fig. 1 is a track format diagram of an information recording/reproducing medium according to an embodiment of the present invention, Fig. 2 is an explanatory diagram showing the track format of an information recording/reproducing medium of the same or downstream side, and Fig. FIG. 4 is a block diagram of an information recording and reproducing apparatus for processing an information recording medium having a track format according to the same embodiment; FIG. The figure is a diagram of the track format of a conventional information recording/reproducing medium, and FIG.
FIG. 7 is a track format diagram of a second conventional information recording and reproducing medium, and FIG. 8 is an explanatory diagram showing the track format of the second conventional information recording and reproducing medium in a band-like manner. SA4. (N)...Nth track 1st sector, SA2. (to)...Nth track, second sector, SA (m+1)t (N)...Nth track, (m+1) sector, SA, 6. (N)・・・・・・
Nth track 16th sector, SA1. (N+,)...
(N+1)th track first sector, SA2. (N+,)
・・・・・・(N+1)) rack 2nd sector' 5A
16. (N+1) 16th sector of the (N+1)th rack, 301 Address reading means, 302
... Address comparison means, 303 ... Control means, 304 ... Reproduction means, 305 ...
...Recording means, 3o6...Formatting means, 307...Information recording and reproducing medium, 308.
·····sector! D section reproduction signal, 309...
Reproduction address signal, 31o...Address match signal, 311...Reproduction request signal, 312...
...Recording request signal, 313...Formatting request signal, 314...Reproduction data signal, 3
16...Target address signal, 316...
・Write signal, 317...Read signal, 318
...Formatting signal, 319...
...Record data signal, 320...Reproduction sector signal. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 5; ,l Figure 7a) Bracken -1

Claims (1)

[Claims] A track format in which a track is composed of a plurality of sectors and requires a seek operation when moving from the last sector of a first track to the first sector of a second track whose track number is one larger. The track format is arranged at a position shifted by at least the time required for seeking compared to the final sector of the first track, and the relationship between the first track and the second track is established for the entire track group. An information recording and reproducing medium characterized by having a track format as follows.