JPS6053391B2 - digital disc device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital disc device, and particularly to an improvement in spot address numbers.

[Conventional technology]

Traditionally, at broadcasting stations, etc., audio processing for commercials (hereinafter referred to as CMs) has been carried out by putting them on air using a single tape in the transmission order several days before the actual broadcasting of the CMs, or by using a large number of cartridges. CM is recorded on the CD, and a large number of these cartridges are included.

[Problem that the invention seeks to solve]

In the former case of the above conventional configuration, there is a drawback that it requires a lot of time and effort to combine many commercials into one magnetic tape, and in the latter case, the number of playback devices and cartridges is In addition, it requires a huge amount of equipment space and has many problems in terms of reliability.

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

Therefore, there is a need 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.

For this purpose, commercials with commercial data recorded on digital discs
A playout system has also been proposed, and these are managed by dividing the disk into sectors, but problems arise due to the complexity of processing using multiple heads and devices and the management method for instructing multiple outputs. . [Means for Solving the Problems] The present invention has been made in view of the above-mentioned drawbacks.The present invention has been made in view of the above-mentioned drawbacks, and it is possible to connect multiple system devices by inserting head numbers, index numbers, mechanical numbers, line numbers, etc. into the spot address number of the disk. The purpose of this system is to enable immediate cueing to a command-specified position corresponding to a data line, sector, head, etc., and its means are to record data using a part of the disk track range as a data storage area, and to record data on the disk. A part of the other track range is used as an address storage area, and a spot address number is recorded in each sector divided into n equal parts in the radial direction through the center of the disk. , a mechanical number, and a data line number.

〔Example〕

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

FIG. 2 is an overall system diagram of the digital disc system of the present invention. In this example, analog CM data is applied to the input terminal 3a of the data processing section 3, analog-to-digital converted, and sent to the write/read control section 4. is input. A spot address number (hereinafter referred to as SPAD) output from the central control unit 1 when writing CM data in the write/read control unit 4 to a magnetic or optical disk 6 is transferred to the disk control unit 2, and this disk control unit In part 2, search for an empty track from the storage circuit provided in the disk 6,
The write or read control section 4 is controlled by the output, and the output puts the disk 6 into a writing state, and the head 7 writes CM data and SPAD onto the disk 6.
Also, at the time of reading, the SP 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 the SPAD from the track of the disk 6, and reads it out by the head 7. The data is sent to the audio 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. Note that 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 is output to the first switch SWl as a continuous data output. The data is supplied to the memory circuit 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. Assuming that the actual broadcast time of the commercial is the actual time L, which is obtained by multiplying the track time T by a certain number, then switch the contact piece on the contact a side of the first switch SWl from the contact b side to the contact c side. If you want to store one track of CM data in the second memory 3f, and if it can be stored for less than time L, move the contact a of the first switch SWl to the contact b side. The data is stored in the first memory 3e. This kind of switching is repeated alternately. The second switch SW2 is the first switch S
While Wl is storing CM data in the first memory 3e, 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 stored. The output is read out and applied to the write amplification circuit 4a of the write or read control section 4. To read the CM data from the above-mentioned memory, when data is written to the first and second memories 3e and 3f in T seconds of real time, this time is compressed to t seconds. In these first and second memories, data is time-compressed at a ratio of t/T. In this way, the time-compressed data is transferred to different disks or tracks on the disk 6 via the switcher 4c to the head groups 7a, 7b, 7c,
Recording is performed by the head 7 composed of 7d, 7e, and 7f. 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 read amplification circuit 4 via the switcher 4c.
b and the third memory 3 via the third switch SW3.
g, and its output is sent to the output terminal 3b as analog data via the fourth switch SW4 and the analog-to-digital conversion circuit 31. As shown in FIG. 2, the output has multiple lines 3b to 3c, similar to when writing.
The third and fourth memories 3g and 3h are alternately switched every T time by the third and fourth switches SW3 and SW4 to perform writing and reading, and when reading, they are expanded and read. When reading, the time is expanded by the ratio T/t. Of course, a plurality of systems shown in FIG. 3 may be provided. A format for recording digital CM data on the disk 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 space 8 for storing addresses, and following this address storage space 8, a data storage space 9 for storing data such as audio is taken on the inner periphery. As shown in FIG. 4, the address storage space is provided with sectors divided radially 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 eight equal parts). The plurality of concentric tracks in the address storage space 8 are provided with index signals (hereinafter referred to as 1D1, ID2, etc.) indicating the starting point for each sector, as shown in FIG. 2A.
is added, followed by track and head numbers (SCADl, SCAD2, SCAD2,
・・・・・・Denoted as SCADn) is added. This SCA
D indicates each of 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 track of the disk that each head is in contact with. Furthermore, in the data storage space 9, the D signal is made to correspond to the above-mentioned SPAD in a plurality of tracks, and the S signal is stored for each track starting from an arbitrary same point on each track as shown in FIG. 5B.
CADl~SCADn and CM's SPADl~SPADn
Of these, the corresponding SCAD and SPAD are recorded, and CM data 10 is recorded for one track. Now, if the total time of CM is L and the time for one track is T, the required number of tracks n is n=■. i.e. n SCADs
One CM is composed of l to SCADO. CM (7) SPA transferred from the central control unit 1 during reading
SCAD is read from address storage space 8 by D, and according to this SCAD, as shown in FIG. 4B, for example, one track of CM data 10 corresponding to SCAD1 is read out. This kind of operation is carried out in the following SCAD2~SCA
This is performed sequentially for Dn. The configuration of the SPAD transferred from the central control unit 1 is, for example, as shown in FIG.
Bits 0 to 6 contain the index I that represents the sector.
The next 5 bits of Dl to IDn are the head number 14 and the next 2.
Mechanical number 11 indicating which mechanism of a plurality of recording and reproducing devices is to be driven is recorded in the bit, and line number 12 indicating the data line to be sent out is recorded in the next three bits, and these numbers 11, S including 12, 13, 14
It is possible to write all PADs into the address storage space 8, and this is hidden by the SPA from the central control unit 1.
Since the data corresponding to D is recorded in the address storage space 8, retrieval becomes extremely easy. In such a format of the disk 6, SPAD verification and the like within the disk 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 the memory operation control unit 2a for controlling the memory, and the output of the memory operation control unit 2a is sent to the SPAD memory 2b,
．． It is input to the SCAD memory 2C1 and the empty memories 2d to 2n. With this configuration, when the device that drives the digital disk 6 of the present invention is turned on, the motor 5 starts rotating and the head 7 reads the address storage space 8 of the disk 6 and records it in the disk 6. The SPAD that is currently set is set in the SPAD memory 2b. Furthermore, the SCAD being used is set in the SCAD memory 2c. Next, when a predetermined SPAD instruction is issued from the central control unit 1, the ID of the sector corresponding to the instruction SPAD in the address storage space of the disk 6 is read again, and the head 7 is activated based on the SCAD data of the D. The data 10 is read by moving to a predetermined track position. Next, considering writing, when the system is powered on, the head 7 scans all sectors of the address storage space 8 and writes SPA data as in the case of reading.
If SCAD is written in the ID corresponding to D, the address is already in use, so these SPADs are set in the SPAD memory 2b.

The SCAD (used track) on the disk that is also used is set in the SCAD memory 2c. Next, the address instruction to be written from the central control unit 1, that is, the SPA
D instruction is made, and according to that instruction, SPAD memory 2
Search b. If in use, read the sector corresponding to the address instruction in address storage space 8 on disk 6, and if unused by connecting SCAD memory 2c, set unrecorded SCAD to empty memory 2d to 2n. do. As shown in FIG. 6, the contents of the empty memories 2d to 2n are as shown in FIG. Later NEXT/
This is done to set an END mark.

〔Effect of the invention〕

Since the present invention is configured and operated as described above, multiple devices and lines or multiple heads and sectors can be specified very easily, and the format is fixed, making it economical. It has the feature of being able to configure a system.

[Brief explanation of the drawing]

FIG. 1 is a format for explaining the spot address of the present invention, FIG. 2 is a system diagram of the present invention, and FIG. 3 is a system diagram of the audio data processing, readout, and write control portion of FIG.
FIG. 4 is a plan view of a disk for explaining the data format used in the present invention, FIGS. 5A and B are explanatory diagrams of data recorded on the disk, FIG. FIG. 7 is an explanatory diagram of writing in empty memory. DESCRIPTION OF SYMBOLS 1...Central control unit, 2...Disk control unit, 3...Audio data processing unit, 4...Reading/writing control unit, 6... disk.

Claims (1)

[Claims] 1. A part of the disk track range is used as a data storage area to record data, and a part of the other track range of the disk is used as an address storage area, and data is recorded in the radial direction through the center of the disk. A digital disk device characterized in that a spot address number is recorded for each divided sector, and the spot address number consists of an index number representing the sector, a head number, a mechanical number, and a data line number. 2. The digital disc device according to claim 1, wherein the spot address number for each sector recorded on the disc is the same as the format transferred from the central control unit.