JPS6041020Y2 - digital disk device - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for recording and reading out digital audio signals using a magnetic disk device, etc., and is particularly applicable to a device for recording and reading out digital audio signals using a magnetic disk device, etc. The present invention relates to a digital disc device equipped with a plurality of spot address memories and track and head collation memories corresponding to the above.

[Conventional technology]

Traditionally, at broadcasting stations, the audio processing of commercials (hereinafter referred to as CMs) has been carried out several days before the day when the commercials are actually broadcast, by putting them on air using a single tape in the order of transmission, or by processing the sound of commercials using multiple tapes. Recording a CM in a Cartridge A large number of these cartridges are automatically selected and the CM is sent out.

However, the former case has the disadvantage that it takes a lot of time and effort to combine many commercials into one magnetic tape.

In the latter case, the number of playback machines and cartridges, as well as the installation space for the equipment, are enormous, and there are many problems in terms of reliability.

Furthermore, since CM, which is audio information recorded on tape or the like, records analog signals, the S/N ratio deteriorates due to repeated dubbing, and care must be taken in handling in terms of maintenance.

Therefore, there has been a demand for a CM sending system that can avoid such complicated administrative work and the use of a large number of equipment as much as possible.

[Problem that the invention attempts to solve]

As the above-mentioned CM sending system, the present applicant has proposed a digital disk device that digitizes analog signal data, records it on a disk, accesses the data on the disk, and retrieves the same CM data as if it had been unified.

However, in this digital disk drive, if only one large-capacity memory is used, access time for writing or reading increases as the CM data capacity increases.In addition, the data capacity of users varies. In many cases, it is better to use multiple relatively small-capacity digital disk devices.

[Means for solving problems]

The present invention was developed in view of the drawbacks of the previous technology, and when multiple digital disk drives are operated in parallel to divide and use small capacity memory, spot address memory and track memory corresponding to these multiple digital disk drives are created. and a head memory, the means for recording data in a part of the disc track range as a data storage area, and for indexing into the address storage area part of the other track range of the disc as an address storage area. Numbers (spot address numbers) and addresses corresponding to track and head numbers are recorded, and when the system of the digital disk device is activated, the tracks in the address storage area are read out, and the above addresses are stored in separately provided spot address memories and track and head memories. The address is stored, and the spot address memory, track and head memory are searched based on the spot address number instruction from the central control unit, and if the specified spot address number, track and head number are found, the disk When multiple sets of digital disk devices are operated in parallel to read spot address numbers as well as track and head numbers from the tracks in the address storage area, the spot address memory, track and head memories are used to drive the digital disk. This is achieved by a digital disk device characterized in that a plurality of sets are provided corresponding to a plurality of sets of devices.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 9.

FIG. 2 is an overall system diagram of the digital disk system of the present invention. In this example, analog signal data is applied to the input terminal 3a of the data processing section 3, is analog-to-digital converted, and is sent to the write/read control section 4. When writing CM data to a magnetic or optical disk 6, the spot address number (hereinafter referred to as TSPAD) output from the central control section 1 is transferred to the disk control section 2, and Searching for an empty track from the memory, the write or read control section 4 is controlled by its output, the disk 6 is placed in a writing state, and the head 7 controls the write/read controller 4.
Write M data and 5PAD onto disk 6.

Also, at the time of reading, the 5Ps instructed by the central control unit 1
The AD controls the disk control section 2, uses its output to control the write or read control section 4, searches for CM data corresponding to 5 PAD from the track of the disk 6, forces the head 7 to read it, and reads it out. The data is sent to the data processing section 3 via the write/read control section 4, where it is digital-to-analog converted and taken out from the output terminals 3d...3c.
It will be aired as analog commercial data.

Incidentally, reference numeral 5 is a motor that drives the disk 6.

Details of the data processing section 3 mentioned above will be explained with reference to FIG.

The CM analog signal input to the input terminal 3a is supplied to the analog-to-digital conversion circuit 3d, where it is converted into a digital signal and sent to the first memory circuit via the first switch SW1 as a continuous data output. 3e and written there.

In this case, the capacity of the first memory circuit 3e is determined to be a capacity capable of storing the time T corresponding to one track of the disk 6, which will be described later.

If the actual broadcast time of the commercial is the actual time obtained by multiplying the track time T, then switch the contact A side of the first switch SW from the contact A side to the contact C side. If you store one track worth of CM data in the second memory 3f, and the amount of time that can be stored is less than the specified time,
The contact piece of the contact point a of the first switch SW1 is turned to the contacting side, and the data is stored in the first memory 3e.

This kind of switching is repeated alternately.

The second switch SW2 is the same as the first switch SW1.
While the CM data is being stored in the memory 3f, the contact piece of the contact a is connected to the contact C on the second memory 3f side, and the data stored in the second memory 3f is read out. The output is applied to the write amplifier circuit 4a of the write or read control section 4.

In order to read the CM data to the above-mentioned memory, if the data is written to the first and second memories 3et3f in T seconds of real time, and this time is compressed to t seconds, these first Note that in the second memory, the data is time-compressed with a ratio of t/T.

In this way, the time-compressed data is transferred to the switcher 4c.
head groups 7at 7bt 7C97dt 7 on different disks or tracks on the disk 6 via
Recording is performed by a head 7 composed of et7f.

At the time of reading, the head 7 reads the data of time t compressed and recorded on the disk 6, and the output is sent to the third switch SW3 via the automatic transmission 4c, the read amplification circuit 4b, and the third switch SW3. 3 memory 3g as analog data.

The output has a plurality of lines 3b to 3c as shown in FIG.

Similarly to writing, the third and fourth switches SW3.
Writing and reading are performed by switching alternately with SW4, and when reading, the data is expanded and read, so when reading, the time is expanded by the ratio of T/l.

A format for recording digital CM data on the disc 6 used in the present invention is shown in FIGS. 4 and 5.

Several tracks inward from the outer periphery of the disk 6 are taken as an address storage area 8 for storing addresses, and following this address storage area 8, a data storage area 9 for storing audio and other data is taken on the inner periphery.

As shown in FIG. 4, the address storage area 8 is provided with n sectors radially divided into n equal sectors on the surface of the disk 6 as indicated by broken lines passing through the center of the disk.

In reality, the sector is divided into 64 equal parts (FIG. 4 shows the case where it is divided into 8 equal parts).

As shown in FIG. 5A, the plurality of concentric tracks in the address storage area 8 have index numbers (hereinafter referred to as ID1, ID2, etc.) indicating the starting point of each sector for each sector.
) is added, followed by track and head numbers (SCADl, SCADl,
5CAD2-----3CADn) is added.

This number of 5 CAD corresponds to the number of tracks when the length of one CM is stored in the data storage area for each track.

Furthermore, one CM is placed in one sector part of the address storage area 8.
If the length is long and the number of data tracks is such that the old and 5CAD cannot fit, a NEXT signal is written at the end indicating that the next sector is to be continued, and the next sector is also read. When the end signal is recorded at the end of the sector, it is known whether the combination of one text data track number for search within one sector is the end, or whether it continues in the next sector. I can do it.

The above-mentioned 5CAD indicates the heads 7a to 7f corresponding to each of the plurality of disks 6 arranged on the rotating shaft of the motor 5, and the tracks of the disks that are in contact with each head.

Further, in the data storage area 9, one of 5CAD and 5PAD recorded in the sector in the address storage area is recorded.

The above-mentioned 5PAD includes the ID shown in FIG. 5A, which will be described later, and the 5PAD starts from the same arbitrary point of each of a plurality of data tracks, and as shown in FIG. 5B, 5CAD□~ 5CADo and CM's 5PAD engineering ~ 5P
Of the ADn, corresponding 5 CAD and 5 PAD are recorded, and CM data 10 is recorded for one track.

Now, the total time of CM is L and the time of one track is T.
The deviation and the required number of tracks are n=lower.

In other words, n pieces of 5CAD□~5C77! □0 and 1 C
M is constructed.

To read data from such a disk, read 5CAD from the address storage area 8 using the 5PAD of the CM transferred from the central control unit 1, and according to this 5CAD, as shown in FIG. CM data 10 is read for one track.

Such operations are sequentially performed for the next 5CAD2 to 5CAD.

The configuration of the 5PAD transferred from the central control unit 1 is, for example, 16 bits in binary, where the 0 to 6 bits are indexes ID1 to IDn representing sectors, the next 5 bits are the head number, and the next 2 bits are the numbers for recording and reproducing. A mechanical number indicating which mechanism in the device is to be driven is recorded, and a line number indicating the data line to be sent out is recorded in the next three bits.

In such a format of the disc 6, 5PAD verification and the like in the disc control unit 2 shown in FIG. 2 will be explained with reference to FIG.

Command data from the central control unit 1 is applied to a memory operation control unit 2a for controlling the memory, and the output of the memory operation control unit 2a is sent to the 5PAD memories 2b and S.
C, AD memory 2 It is input to CN empty memories 2d to 2n.

With this configuration, when the device that drives the digital disk 6 of the present invention is in the ON state, the motor 5 starts rotating, and the head 7 reads the address storage area 8 of the disk 6 and records data on the disk 6. Set the current 5PAD in the 5PAD memory 2b.

Furthermore, the 5CAD being used is set in the 5CAD memory 2C.

Next, when a predetermined 5PAD instruction is issued from the central control unit 1, the instruction 5 is again issued in the address storage area of the disk 6.
Read the ID of the sector corresponding to the PAD and select the 5C of the corresponding sector.
Data 10 is read by moving the head 7 to a predetermined track position based on the AD data.

Next, considering writing, when the system is powered on, the head 7 scans all sectors of the address storage area 8 of the disk and writes 5PA as in the case of reading.
If 5CAD is written in the ID corresponding to D, the address is already in use, so these 5PADs are set in the 5PAD memory 2b.

Similarly, set 5CAD (used track) on the disk used in the 5CAD memory 2c.

Next, an address instruction to be written, that is, a 5PAD instruction, is issued from the central control unit 1, and the 5PAD memory 2b is searched in accordance with the instruction.

If it is in a usable state, read the sector corresponding to the address instruction in the address storage area 8 on the disk 6, and search the 5CAD memory 2C to find the unrecorded 5C.
If there is an AD, it is set to empty memories 2d to 2n.

As shown in Fig. 7, the contents of the blank memo IJ 2d to 2n are as follows: 5PAD, ~5PADn are set in the first number, then n 5CADs are inserted for the length L of the CM, and the last 5
Set the NEXT or END signal after CADA1-5CADN.

The details of the read/write circuit for the cylinder address storage area 8 described above will be further explained with reference to the circuit and time chart of FIGS. 8 and 9.

When the system starts up, that is, the power supply is on, the command from the central control unit 1 instructs 5PAD, which is written into the address register 11, and when a read command is issued to the address storage area 8 of the disk 6, as shown in FIG. Looking at the sector pulse P-P interval created by mechanically dividing the circumference of the disk as shown in B, the signal from the sector in the address storage area 8 is as shown in FIG. Since the command signal from the address register 11 is also supplied to the detection circuit 13 via the amplifier 12, the detection circuit 13
detects a match between the IDs from the address register 11 and the head 7 shown in FIG. 8A at the point indicated by the broken line, and based on this detection output, switches SW5 is turned on to 1 until the next sector pulse as shown in FIG. 9C. The read waveform (RE) period of
5PAD and 5CAD1~SC,ADn from disk 6
is written to the empty memory 2d.

Also, in order to write 5PAD and 5CAD written in the empty memory 2d to the address storage area of the disk 6, as shown in Figure 9, during the write waveform (WR) period, after the detection circuit 13 detects ID matching, the output is , via the amplifier 14,
is supplied to the head 7.

As a result, 5PAD and 5 of empty memory 2d are transferred to disk 6.
Write CAD into address storage area 8.

It is assumed that the ID has been formatted at the beginning of use of this system.

Further, in the data storage area 9, a 5CAD address is placed in the address register 11 of FIG. 8, and a match is detected by the detection circuit 13 based on the reproduced signal of a predetermined track.

In the present invention, a plurality of magnetic disk drive devices 15a*15bw as shown in FIG. 1 are constructed as shown in FIG.
15c* 15d, and a plurality of address verification memories 2bl, 2b2-2 corresponding to these magnetic disk playback devices 15a, 15b, 15c, 15d.
b3- 2b4, 2b5 and track and head verification memory 2C192C2t 2C3t 2C4t2C6
It is assumed that there is only one empty memory 2d to 2n as shown in FIG.

[Effect of idea]

Since the present invention is configured as described above, when the address storage area information of the disk 6b is read out by the 5PAD instruction, for example, from the disk playback device 15b, and the 5PAD memory and 5CAD memory are compared, the 5PAD memory 2b2 and the 5CAD memory 2C2 are compared. Because it only requires a comparison of Even if the number of devices to be operated in parallel varies, it is sufficient to arrange 5 PAD memories 2b and 5 CAD memories corresponding to the number, so the practical effect is great.

[Brief explanation of the drawing]

Figure 1 shows the disk drive playback device of the present invention, 5PAD,
5A system diagram showing CAD and empty memory, Figure 2 is an overall system diagram of the present invention, Figure 3 is a system diagram of the audio data processing section and read/write control section of Figure 2, and Figure 4 is a system diagram of the present invention. FIG. 5A and B are explanatory diagrams of data recorded on the disk, FIG. 6 is a system diagram of the disk control unit, and FIG. 7 is a plan view of the disk to explain the data format used.
An explanatory diagram of the inside of the CAD memory, FIG. 8 is a system diagram for explaining reading and writing between the address storage area and the data storage area of the disk, and FIG. 9 is an explanatory diagram of waveforms in FIG. DESCRIPTION OF SYMBOLS 1...Central control unit, 2...Disk control unit, 3...Data processing unit, 4...Reading/writing control unit, 6... ...Disk, 11
...Address register, 13...Detection circuit, 15a-15d...Magnetic disk drive device.

Claims (1)

[Scope of utility model registration request] A part of the disc track range is used as a data storage area to record data, and a part of the other track range of the disc is used as an address storage area, and an index number (spot address number) and track and head numbers are recorded in the address storage area. Record the address corresponding to
When the system of the digital disk device is activated, the track in the address storage area is read out, the address is stored in a separately provided spot address memory and track and head memory, and the spot address is stored based on the spot address number instruction from the central control unit. Search the memory, track and head memory, and if there is the specified spot address number, track and head number,
When operating multiple sets of digital disk devices in parallel that read spot address numbers as well as track and head numbers from the tracks in the address storage area of the disk, the spot address memory, track and head memories are stored in the digital disk. A digital disk device characterized in that a plurality of sets are provided corresponding to a plurality of sets of devices for driving the digital disk device.