JPS6273470A - Floppy disk device - Google Patents

Abstract

PURPOSE:To improve performance to realize a high recording density by providing an interface signal which informs that the positioning operation of a magnetic head is in process to a magnetic head positioning controlling and driving circuit. CONSTITUTION:As soon as the positioning operation, that is, the seek operation of a magnetic head 4 against a magnetic disk is started, a step signal that is as the interface signal to inform that the operation is in process is inputted from an interface input terminal 1. A reception circuit 2 receives the step signal, that is, a seek instruction and outputs it to a magnetic head positioning control ling and driving circuit 4. The magnetic head positioning controlling and driving circuit 4, receiving the step signal from the reception circuit 2, outputs a signal that represents that the seek operation is in process to a transmission circuit 5, and simultaneously, drives the magnetic head 4, making it perform a precise positioning. The transmission circuit 5 sends the signal that represents that the seek operation is in process to an interface output terminal 6.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a floppy disk device, and more particularly to a floppy disk device that notifies a control device by an interface signal that the magnetic head of the disk device is in a positioning operation. Regarding.

[Conventional technology]

Generally, in a floppy disk drive, a magnetic head is moved by an actuator and positioned at a predetermined position with respect to a magnetic disk, and then the magnetic head writes to or reads from the magnetic disk.

Conventional floppy disk drives do not have an interface signal to notify that the magnetic head is in the process of positioning, and normally the seek ends after a certain period of time after receiving a seek command. It was regarded as something.

[Problems to be solved]

However, this method of detecting the end of a positioning operation in which a seek command is received and the seek is considered to have ended after a certain period of time has no relation to the actual positioning operation in the magnetic head of the disk device, and therefore it is difficult to reduce the seek time of the disk device. In addition, performance improvements such as optimization of seek operations using methods such as buffered strobe commands used in hard disk drives using floppy-like interfaces, and improved positioning accuracy using data surface servo, etc., or means for improving performance. However, there was a problem in that it was impossible to respond at all.

CfrB! Solution to Point A] Hontakuma has solved the above problem, and is a floppy disk device in which a magnetic head moves and is positioned at a predetermined position relative to a magnetic disk, and writes or reads from the magnetic disk. The magnetic head is configured to output an innoturf ace signal indicating that the magnetic head is in a positioning operation, and to notify the signal to a head positioning control drive circuit to position the magnetic head. .

〔Example〕

Next, an example thereof will be explained with reference to FIG.

FIG. 1 is a block diagram showing the operational functions of an embodiment of a floppy disk device according to the present invention.

In FIG. 1, 1 is an interface input terminal, 2 is a receiving circuit, 3 is a magnetic head positioning control drive circuit, 4 is a magnetic head and actuator (hereinafter referred to as magnetic head 4),
5 is a transmitting circuit, and 6 is an interface output terminal.

Next, its operation will be explained.

When the magnetic head 4 starts a positioning operation, that is, a seek operation with respect to the magnetic disk, a step signal is inputted from the interface driver 1 as an interface signal to notify that the operation is in progress. The receiving circuit 2 receives this step signal, that is, the seek command, and outputs it to the magnetic head positioning control drive circuit 4. When the magnetic head positioning control drive circuit 4 receives the SDE signal from the receiving circuit 2, it sends a signal indicating that a seek operation is in progress to the transmitting circuit 5, and at the same time drives the magnetic head 4.
to perform precise positioning. The transmitting circuit 5 sends a signal indicating that a seek operation is in progress to the interface output terminal 6.

〔Effect of the invention〕

As explained above, the present invention includes the interface No. 4g that notifies the magnetic head positioning control drive circuit that the magnetic head of the disk device is in the positioning operation, so that the control drive circuit can control the magnetic head of the disk device. On the other hand, the magnetic head obtains positioning information from the data surface during positioning operation, performs precise positioning, and then completes the seek operation, which improves performance for high recording density. The effect is that it is possible to make improvements.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the operational functions of an embodiment of a floppy disk device according to the present invention. 1... Interface input terminal 2... Receiving circuit 3... Magnetic head positioning control drive circuit 4... Magnetic head and actuator 5... Transmitting circuit

Claims (1)

[Claims] In a floppy disk device in which a magnetic head is movable and positioned at a predetermined position with respect to a magnetic disk and writes or reads from the magnetic disk, an interface signal indicating that the magnetic head is in the positioning operation is outputted, A floppy disk device characterized in that the magnetic head is positioned by transmitting a signal to a magnetic head positioning control drive circuit.