JPS5860415A - Magnetic recording system - Google Patents

Abstract

PURPOSE:To perform reading and writing operation regardless of the direction of a card, etc., having a stuck magnetic tape, by recording data twice in the opposite directions of bits, and thus making the data, written for the 1st time and 2nd time, symmetric. CONSTITUTION:Data written on a magnetic card 1 are read by a magnetic head 2, amplified at a part 3, and converted by a demodulating circuit 4 into a binary number, which is transferred through lines 7 and stored in a memory 8. The stored data are analyzed by a control part 6. For data writing, data edited in the memory 8 are transferred through the lines 7 to a modulating circuit 5 to write the data on the card 1 through an amplifier 3 and a head 2. The sequence of the data in the memory 8 coincides with that of data written on the card 1, and editing is performed so that the sequence of bits of data written for the 1st time is made opposite to that written for the 2nd time, thereby writing the same data regardless of the running direction of the card 1. Further, those data are read and the control is simplified.

Description

[Detailed Description of the Invention] This book/A Ming is written on the card or form pasted on the
The present invention relates to a magnetic recording method when performing an Ib distribution ball.

When recording magnetically on cards or forms with magnetic tape attached, in order to improve reliability, when writing the same data twice, the first and second data are inserted between the first and second codes as shown in Figure 1. The second data was enriched in the same direction.

Therefore, when editing and reading data, always consider the first inclusion and reading direction, and edit, analyze, and control the data.
Is it really cheap to do nl? LO The purpose of the present invention is to provide an entire recording method that eliminates the hassle of having to be conscious of the direction of introspection and indulgence, and that simplifies data editing, analysis, and control.

In other words, as shown in Figure 2, when storing the 21st row, Akira Honura makes sure that the alignment of the bits is reversed from the first time. It is made symmetrical so that there is no need to be aware of the direction when reading and reading. Of course, in this case, both the beginning and ending signs are A'zej\.

FIG. 6 shows an embodiment of the present invention. The data written on the magnetic card or form 1 is sequentially read by the magnetic hand 2 as the magnetic card or form 1 runs, and then sent to the amplifier 6.
The readout I1gJ increased by I- is converted into a binary number by approximately 4, data is transferred 7, and stored in the memory 8. The stored data is analyzed and processed by the control unit 6. If the data is rich, the data is edited in the memory 8 by the control unit B. The edited data is data transferred 7 and modulated N
5, and is written from the magnetic head 2 to the magnetic card or form 1 through the amplifier 6. The data arrangement in the data memory 8 matches the data written on the magnetic card or the system form 1. Therefore, if you edit the data in the data memory as shown in Figure 1 in addition to writing data into a magnetic card or one-time form, the same data will be written regardless of the direction in which the magnetic card or form runs. . Also, when reading data from a magnetic card or a form, the same data is stored in the data memory regardless of the direction in which the mountain card or form travels. The same applies when a magnetic head runs instead of a magnetic card or form. Is it normal to edit and analyze data? 1llll
This is done by the processor in the N section.

With the method described above, data collection and analysis during convolution and reading can be achieved in the same manner regardless of the writing and contouring directions, which simplifies control. Furthermore, hand・
Even in the case of scanning, it is not possible to set the direction of the eyebrows arbitrarily, as it is difficult to set the direction of the eyebrows arbitrarily. However, in this method, Q,
l Bidirectionality can be easily realized.

The data described above may include data bits for error checking. You may insert a symmetrical rata that cuts between the first and second data.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an example of ★included data according to the conventional method.
Figure 2 is a diagram showing the whistle using this method. Figure 6 shows a block diagram of an embodiment of the present invention. 1 is a magnetic card, 2 is a magnetic head, 3 is an amplifier, 4 is a demodulation circuit, 5 is a modulation circuit, 6 is a controller 11, 7 is a data transfer, 8 is a data memory, 9 is a control, 10 is a data editing/editing circuit.
analysis. 11 Figure (oro + θθ00 Hl? Z diagram (070100001NI)" 23 Figure

Claims (1)

[Claims] Regarding magnetic recording that magnetically enriches and stores data on a card with magnetic tape attached or on a first-period ticket, in a recording method that stores data twice, the bits of the second data in the second round of data are recorded twice. By reversing the order, the 11th and 2nd complimentary data are made symmetrical, and the direction of loading and reading is set to 1.
A magnetic recording system that is characterized by the ability to store and read data in both directions without being conscious of it.