JPS6386105A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To confirm information after recording without generating an inter- signal crosstalk by a rotary transformer, by dividing a head scanning section on a tape into plural pieces, and providing alternately a recorded section and an unrecorded section. CONSTITUTION:A scanning locus which has been inclined in the longitudinal direction of a tape is divided into four in the width direction, an odd section and an even section are used as a recorded section and an unrecorded section, respectively, and as for a rotary head, the arrangement of each head is set so that the scanning locus of recording heads 9, 11 are scanned continuously by reproducing heads 10, 12. First of all, when the recording head 9 records information in a section 1 and sets about a section 2, the reproducing head 10 reads the information of the section 1, and during that time, the recording head 9 executes a scan without recording the section 2, and when the information of the section 1 is confirmed, the next information is written in a section 3. This scan is repeated successively, and from a section 5 recording and reproduction are executed by the recording head 11 and the reproducing head 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording/reproducing device using a magnetic tape for storing information in an information processing device such as a computer.

BACKGROUND OF THE INVENTION Conventionally, magnetic recording and reproducing devices using magnetic tape have been used as hard disk drive devices (for pull-up memory) because they can store large amounts of information. Information is recorded on a magnetic tape wound on a cartridge or reel using a fixed head on a plurality of mutually parallel long and thin tracks extending in the longitudinal direction of the tape.This fixed head has a recording head and a reproducing head. are paired, and the heads are magnetically shielded and separated by a minute distance. During recording, the recording head records information, and the following reproducing head reads and confirms the information (Read).
After Write check)
We are working to ensure reliability.

However, in systems using fixed heads, the tape must be moved at high speed in order to support high transfer speeds, resulting in problems such as the need for long tapes and the large size of the drive device. be.

Therefore, a method has been considered in which the head is changed from a fixed head to a rotating head. That is, since information is recorded on a scanning locus inclined with respect to the longitudinal direction of the tape using a rotating head, the tape can be moved at a low speed, and the drive device can also be made smaller.

Problems to be Solved by the Invention However, in the above configuration, a rotary transformer is required when inputting and outputting signals to the rotary head, and crosstalk between signals in the rotary transformer becomes a problem.
Since recording and reproduction cannot be performed simultaneously, there is a problem in that it is difficult to confirm the recorded information.

The present invention has been made in view of the above-mentioned problems, and makes it possible to confirm information after recording even when recording and reproducing using a rotary head or a rotary transformer.

Means for Solving the Problems In order to solve the above-mentioned problems, the magnetic recording and reproducing apparatus of the present invention divides the scanning locus of the rotary head, which is inclined with respect to the longitudinal direction of the tape, into a plurality of parts in the tape width direction.
The recording head is configured to sequentially record information in the divided sections with two divided sections left open, and during the period when the recording head is scanning the unrecorded divided sections, the reproducing head records information that was previously recorded. The recorded information of the divided sections is reproduced to confirm the recorded information.

Function According to the above configuration, after the recording head records a signal in the first section, the reproducing head scans that section and reads out the signal, while the preceding recording head records one section without recording. After scanning, the recording head starts recording the next section when the reproducing head finishes reproducing, so information can be confirmed after recording without causing crosstalk between signals in the rotating transformer.

EXAMPLE A magnetic recording/reproducing apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 shows a recording pattern on a magnetic tape in an embodiment of the magnetic recording/reproducing apparatus of the present invention. The scanning locus inclined with respect to the longitudinal direction of the tape is divided into four parts in the tape width direction, 1, 3° 6.7 are divided sections where information is recorded, and 2, 4, 6° 8 are unrecorded divided sections. It is.

FIG. 2 is a head layout diagram of the rotary head used in the above embodiment. 9 and 11 are recording heads; 10.
12 is a reproducing head, and 13 is a rotating cylinder. The tape is wound diagonally by 180° along the rotating cylinder 13, and the recording heads 9 and 11 and the reproducing heads 1o and 12 are opposed to each other by 18o0. Also,
Recording head 9, playback head 10, and recording head 11
and the playback head 12 are separated by an angle of 46°,
In addition, the mounting heights of the recording heads 9, 11 and the reproduction head 10.12 are set so that the reproduction head 10.12 follows the scanning trajectory of the recording heads 9, 11.

First, the recording head 9 records information in the divided section 1. When the recording head 9 finishes recording and starts the next divided section 2,
The playback head 1o covers the divided section 1. playback head 1o
While reading the information of divided section 1 and confirming the information, the recording head 9 is scanning over divided section 2 without recording.

When the reproducing head 10 finishes scanning the divided section 1 and starts scanning the next divided section 2, the recording head 9 starts scanning the next divided section 3.

If the result of checking the information in the divided section 1 is "no error", the next information is written in the divided section 3 by the recording head 9. If the result of checking the information in divided section 1 is "error", the information written in divided section 1 is written again in divided section 3. When the recording head 9 finishes recording and starts the next divided section 4, the playback throat 1o starts at the next divided section 3. While the reproducing head 10 is reading the information of the divided section 3 and confirming the information, the recording head 9 is scanning over the divided section 4 without recording. When the playback head 1o finishes scanning divided section 3 and starts scanning the next divided section 4, the recording head 9 leaves the tape, and the recording head 11 facing 180 degrees starts scanning divided section 5 on the tape. . The result of checking the information of divided section 3 is "No error"
In this case, the following information is written in the divided section 5 by the recording head 11. If the result of checking the information in the divided section 3 is "error", the information written in the divided section 3 is written again in the divided section 6. When the recording head 11 finishes recording and starts the next divided section 6, the reproducing head 12
is applied to divided section 5. Thereafter, the pair of recording head 11 and reproducing head 12 repeatedly scans the divided sections 6 and 8 in the same manner as above, and then this operation is repeated alternately with the pair of recording head 9 and reproducing head 10. .

FIG. 3 is a block diagram schematically showing the above-mentioned recording/reproducing system.

In FIG. 3, 14 is an information source from which information to be recorded is generated. Reference numeral 16 denotes a recording control circuit that takes in the data signal from the information source 14 and guides it to the recording heads 9, 11, and in synchronization with the rotational phase of the rotary recording heads 9, 11, divides the divided sections 1, 3, 5° 7 A data signal to be recorded is applied via the recording amplifier 16 in accordance with...

The reproduction signal reproduced by the reproduction head 10.12 is led to a comparison circuit 18 via a reproduction amplifier 17, where it is compared with the recorded data stored in the recording control circuit 15, and if there is an error, it is controls the recording control circuit 16 so that the data is recorded again in the next section. Furthermore, when the two signals match, the recording control circuit 15 is controlled so that the next data is taken in from the information source 14 and recorded in the next section.

In the above embodiment, the information signal is sequentially recorded in every other divided section of the plurality of divided sections, but as shown in FIG. It may also be configured to record signals.

Effects of the Invention As described above, the magnetic recording and reproducing apparatus of the present invention uses a rotating head and a rotating transformer by dividing the head scanning section on the tape into a plurality of sections and alternately arranging recorded sections and unrecorded sections. This makes it possible to check the information after recording even in the conventional method.

[Brief explanation of the drawing]

Fig. 1 is a recording pattern diagram on a magnetic tape in an embodiment of the magnetic recording/reproducing device of the present invention, Fig. 2 is a head arrangement diagram of a rotary head used in the embodiment, and Fig. 3 is a recording pattern diagram of the embodiment. FIG. 4 is a block diagram showing an outline of the reproducing system, and is a diagram of a recording pattern on a magnetic tape in another embodiment. 1.3, 6.7... Information recording section, 2, 4, 6
゜8...Unrecorded section, 9, 11...Rotating recording head, 10.12...Rotating playback head, 13...Rotating cylinder, 14... ...Information source, 15... Recording control circuit, 16...
・Recording amplifier, 17...Reproducing amplifier, 18...
...Comparison circuit.

Claims (1)

[Claims] A scanning locus tilted with respect to the longitudinal direction of the tape by the rotating recording head is divided into a plurality of sections in the tape width direction, and information signals are sequentially recorded in the divided sections by the rotating recording head with at least one divided section left open. In addition, during the period when the rotary recording head is scanning a divided section that is not recorded, the recording information of the divided section previously recorded is reproduced by the rotary playback head, and the reproduced signal and the recorded information before the recording are reproduced. A magnetic recording/reproducing device characterized in that it detects whether the recording state is good or bad by comparing it with an information signal.