JPS60193186A - Information writer/reader for magnetic information carrier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for writing information onto a magnetic information carrier.

BACKGROUND OF THE INVENTION Techniques for recording or writing information on magnetic information carriers such as magnetic cards, magnetic chips, magnetic strips, magnetic disks, etc. have been known for several decades. Information can be stored by writing it on a magnetic information carrier and processed later or at a remote location by reading it from the magnetic information carrier.

This technology has been used to store analog and digital information. It is also known to convert analog or digital information into digital or analog information, respectively, and to store it in digital or analog form, respectively, on a magnetic information carrier. The technology of storing information on magnetic information carriers is a well-established technology that has been extensively tested theoretically and practically.

For magnetic registration of information on magnetic information carriers, devices of the type described above are usually used. Generally, the apparatus includes a magnetic write head for writing information to a magnetic information carrier, a drive means for driving the magnetic information carrier and the magnetic write head relative to each other, and a drive means for receiving information signals to the magnetic write head. It consists of electronic writing means for supplying said information signals. The solution is to reduce the magnetic write head gap and reduce the distance between the magnetic information carrier and the magnetic write head in order to achieve reliable and durable optimal registration for maximum registration density and maximum registration capacity. has been considered as the most suitable. A unique application has been developed, the so-called non-contact recording technology. In this application example, recording is performed at a maximum distance of 10 to 20 μm. It appears to be a well-established fact by conventional registration technology that the distance between the magnetic information carrier and the magnetic convolution head, of the order of 10-20 μm maximum, must be equal to the gap of the magnetic write head.

In addition, 10 ~ between the magnetic information carrier and the magnetic convolution head
Said maximum distance of 20 μm is considered to be the maximum limit for achieving reliable and durable optimal registration in terms of registration density and registration capacity.

Another well-known fact when considering magnetic registration is that the main cause of bad registration is foreign matter such as dust. This may cause erroneous contact. Accordingly, several attempts have been made to remove such foreign objects from contact with the magnetic information carrier or magnetic write head, thereby preventing them from causing faulty or erroneous registrations.

However, in some applications, information must be registered and written to the magnetic information carrier in an environment where the magnetic information carrier contains foreign matter that may cause defective or erroneous registration.

In order to eliminate to some extent the risk of these foreign objects causing defective registrations, means are provided for cleaning the magnetic information carrier and the magnetic information carrier and magnetic write head move relative to each other to register information on the magnetic information carrier. Attempts have been made to eliminate the risk of foreign objects causing erroneous contact between the two during implementation. However, providing such cleaning means has not been able to achieve complete results and has not been satisfactory. This is because the cleaning measures are not effective enough and
The maintenance required for periodic cleaning makes them extremely unattractive for some applications.

Highly reliable writing or recording to the magnetic information carrier can be performed even in an environment containing foreign matter such as dust, and there is no need for cleaning means to clean the magnetic information carrier, and there is no need for maintenance or a cleaning device. There is a need to provide equipment that eliminates the need for periodic cleaning.

Unfortunately, despite the well-established fact that the distance between the magnetic information carrier and the magnetic write head must be as small as 10-20 μm, the total relative distance between the magnetic information carrier and the magnetic write head is It has been found that high quality and reliable writing or recording can be performed when the distance between the two is increased beyond the conventionally established maximum limit of 20 μm to a distance of 1000 μm.

Furthermore, it has been discovered that when driving the magnetic information carrier and the magnetic write head relative to each other, the magnetic gap of the magnetic write head can be approximately 50-200 when the distance between the two is on the order of 50-1000 μm.

Means for Solving the Problems and Effects The present invention provides a device for writing information to a magnetic information carrier as follows.

a magnetic convolution head for writing information to a magnetic information carrier; drive means for relatively driving said magnetic information carrier and said magnetic write head; and a drive means for receiving an information signal and directing said information signal to said magnetic write head. Electronic writing means for supplying.

The magnetic write head and the magnetic information carrier are driven relative to each other by the drive means, and the magnetic information carrier
00 μm 1 preferably about 50-600 μm, most preferably about 100-200 μm, and said magnetic write heads are about 50-200 μm 1 preferably about 5
It has a magnetic gap of 0-100 μm, most preferably 100 μm.

1000 μm, exceeding the previously established maximum limit of 20 μm
By increasing the distance between the magnetic information carrier and the magnetic write head to a distance of , foreign matter such as dirt will no longer affect the writing or recording quality. This is because when the magnetic information carrier and the magnetic write head are driven relative to each other by the drive means, foreign objects can pass through the gap between them.

In some applications, a device for writing information to a magnetic information carrier is provided, for example to read information identifying the magnetic information carrier, or to precisely align the magnetic information carrier and the magnetic write head with each other. It is desirable that the magnetic information carrier is capable of reading information from the magnetic information carrier. Therefore, the device of the present invention further comprises:

a magnetic reading head for reading information from a magnetic information carrier; and an electronic reading multi-device for receiving signals from said magnetic reading head and providing as output information signals corresponding to information stored on said magnetic information carrier. O When the magnetic reading head and the magnetic information carrier are driven relative to each other by the driving means, the
The magnetic read head has a magnetic gap of about 10-100 μm, preferably about 50-100 μm, most preferably 100 μm.

In the 49.9 coupling device to the write bladder, the magnetic write head and the magnetic read head can have a very compact and simple structure by being constituted by a single magnetic head.

The drive means for driving the magnetic information carrier and the magnetic head relative to each other may move the magnetic head and the magnetic information carrier may be fixed relative to the device, but in a preferred embodiment of the device according to the invention. In this case, driving means is provided to move the magnetic information carrier relative to the magnetic head. Instead, the magnetic head is held in a fixed position and the magnetic information carrier is moved relative to it.

The invention relates in particular to such a device for writing information to a liquid sample container having a cylindrical external surface and at least one magnetic strip arranged on the cylindrical external surface. In this particular object of the invention, the device is configured to accommodate a liquid sample container.

The device for writing information into the liquid sample container is Research P9.
[Can be used in various places such as hospitals, production plants such as breweries and dairy factories, and chemical manufacturing plants. However, the most important application of the device according to the invention is in the agricultural field. The device is used to write information about the farm, cattle, sample date and time, etc. onto the milk sample container. As can be easily seen, the environment of a cowshed contains a lot of foreign matter such as dust.
When an operator such as a livestock inspector, a farmer, or a skilled agricultural worker operates the device, the operator's hands are often covered with dust and dirt, making it easier for foreign objects to get into the device. Foreign objects may be transferred from your hands to the milk sample container during device operation or directly into the device. It can also be applied to the veterinary field. When the device according to the invention is applied in this field, information about the livestock blood sample is gleaned from the magnetic strip of the blood sample container.

Information includes identification of herds such as cattle, sheep, pigs, and horses, specific heads of household,
This includes information about the date and time of the appointment, and information about the veterinarian.

In such applications of the device according to the invention, the information identifying the sample in the liquid sample container is advantageously in digital rather than analog format.

Therefore, the device of the present invention further comprises:

digital input means for inputting digital information signals to the electronic writing means; and receiving digital information signals from the output of the electronic writing means.
A perfect digital output method.

In such an embodiment of the device according to the invention for writing digital information on a magnetic information carrier and reading digital information from the magnetic information carrier, the digital input means converts the input signal supplied to the input means into a digital signal. It is preferable to provide it so that it can be changed to

The digital input means may receive input signals from any source of analog or digital signals, such as switchboards, signal generators of any suitable type, such as clocks, and preset code generators. However, in a preferred embodiment of the device according to the invention, the 7''' sotal input means is a numeric or alphanumeric board and the digital output means is a numeric or alphanumeric display.

The device according to the invention is capable of writing individual bits on a single and identical magnetic strip of a liquid sample container.

However, in order to improve the signal-to-noise ratio and reduce crosstalk, the liquid sample container is made up of two independent magnetic strips9, each storing either a logic "0" or a logic "1", and the magnetic head is connected to the liquid sample container. Preferably, the magnetic head assembly has two magnetic heads acting on respective magnetic strips of the container.

The liquid sample container can be driven by drive means in any suitable manner. The drive means can be comprised of an electric motor that provides the magnetic head with motive force to drive the liquid sample container. The liquid sample container can be driven by any suitable means, such as a belt coupled to the cylindrical outer surface of the J container. However, in a preferred embodiment of the invention, the drive means further comprises an electric motor comprising a drive shaft having a drive loan such that it couples to the cylindrical external surface of the liquid sample container, and the drive shaft of the drive means comprises: Interconnect in any suitable manner. In this way, the drive shaft can be connected directly to the electric motor. This constitutes a so-called direct f,mm assembly. Alternatively, the electric motor and drive shaft can be interconnected by transmission wheel means. In a preferred embodiment of the invention, the motor and drive shaft include a motor drive pulley, a drive shaft idler pulley,
and interconnected by a belt transmission means consisting of a belt connecting the motor drive pulley and the drive shaft idler pulley.

All functions of the device according to the invention can be effectively controlled by computer means. The computer means may be constituted by a single computer such as a microcomputer. Alternatively, the computer means may consist of several independent parts which communicate with each other and control individual functions of the device. The individual functions of the device include writing information to the magnetic information carrier, reading information from the magnetic information carrier, controlling the drive means, etc. However, in a preferred embodiment of the invention, said computer means comprises two computer parts. A first computer part is provided for controlling the functions of the electronic writing/reading means and the driving means, and a second computer part is provided for controlling the functions of the digital input means and the digital output means.

In order to give the device according to the invention a high degree of practicality, it is desirable that the device according to the invention be battery powered, in order to provide a device that functions independently of external equipment and mains power.

Example The present invention will be described in detail with reference to the drawings.

FIG. 2 illustrates a preferred embodiment of a device for loading information onto a magnetic information carrier, which device is designated by the number 10. Magnetic information carrier is a liquid sample container! Place it on a30. Container 30 is shown in FIG. 3 and described in detail below.

The device 10 consists of a device housing 12. Preferably, the device housing 12 is comprised of a durable, high strength plastic material such as impact resistant expanded polystyrene. Since the device 10 is a portable measuring device, the container 12 is provided with a handle 14 and a sling 16. The device 10 is further provided with an input keyboard 18 consisting of 15 numeric keys. Display 20 and two sets of ramps '19 to display 16 reports to the operator.
．． 21 will be provided. A power on/off switch 76 is provided in a recess on the bottom surface of the device housing 12. Said liquid sample answer 0
30 is housed in the opening 22 on the top surface of the device housing 12. Although the device 10 can be used to record any numerical information on the magnetic information carrier of a liquid sample container 30 containing a liquid sample, the device is primarily used by field inspectors, farmers, and skilled agricultural workers to place the container 30 into the device 10. The arrangement is used to record information identifying the milk sample, date, and yield of a given cow on the farm in a given container 30 containing the milk sample.

Traditionally, milk samples have been placed in milk sample containers with paper labels placed on the external entry surface. The farmer's classification, cow's classification, and implementation date were written on the paper label. However, information written on paper labels is often destroyed by dust, dirt, and milk drops from the fingers of stock inspectors, farmers, or skilled agricultural workers. Also, this registration procedure is time consuming and does not include testing routines to identify incorrect labels or milk sample containers.

Therefore, the device of the present invention is a portable high-quality gata recording device for use in the agricultural field by livestock inspectors, farmers, or skilled agricultural workers to achieve reliable, permanent, and fail-safe information registration. The purpose is to provide money.

FIG. 3 shows details of the milk sample container 30. The milk sample container 30 consists of a tubular container body portion 24 . The tubular body portion 24 has an outwardly bent rim portion 26 at its top end and a bottom portion 28 .

Container 30 is preferably made of a plastic material such as polycarbonate. The container 30 further includes a cover,
This is not shown. On the outer surface of the tubular container body portion 24 are two magnetic strips.

Place 34.36. The illustration of the magnetic horn is partially cut away. As disclosed herein, magnetism) I
J tube 34.36 is a magnetic layer 40 covered with a retention layer 42.
Consisting of Preferably, a silk screen printing process is applied to the magnetic layer and storage layer of the magnetic strips 34, 36. The magnetic layer consists of a magnetic component, for example iron oxide, and an adhesive component, for example a two-component epoxy resin lacquer. The thickness of the magnetic layer and the holding layer are each 4
0 to 50 μm and 10 μm. Milk sample container 3
0 further comprises a drive track 38 for rotating the container in cooperation with drive means, as described below.

FIG. 1 is a schematic diagram of an information writing/reading device for a magnetic information carrier as an embodiment of the present invention. Components already described are designated by the same numbers. The mechanical drive means of the device and the milk sample container 30 are shown within the dotted border block 98 at the top left of FIG. Said drive means essentially consist of a motor 50, preferably a low power DC motor having a motor shaft 52 provided with a motor shaft drive pulley 54. A drive shaft idler pulley 58 is provided at the lower end of the drive shaft 60 of the device.

Drive shaft idler pulley 58 is connected to motor shaft drive pulley 54 by belt 56. drive shaft 6
A drive row 262 is provided at the upper end of the drive row 262. Drive roller 6
2 connects with the drive track 38 of the milk sample container 30.

The drive shaft 60 further includes a radial slit 65.
A speed wheel 64 having a speed wheel 64 is housed therein. speed wheel 64
cooperates with speed sensor 66. The speed sensor 66 is composed of a light emitting diode and a phototransistor. The speed sensor 66 is the speed sensor 6
The presence of a slit 65 in the speed wheel 64 in 6 is detected. Within the mechanical part of the device, the point #boundary block 98
A magnetic helad assembly 68 is provided therein. The magnetic head assembly 68 includes two magnetic head portions 70.
Consists of 72. The magnetic head parts 70.72 cooperate with the magnetic strips 7'34, 36 of the milk sample container 30, respectively. A constant distance A is maintained between the outer surface of the magnetic strip 34, 36 and the front bottom surface of the magnetic head portion 70, 72, respectively.

Apart from said mechanical means, the device 10 also includes electronic means cooperating with said mechanical means, namely a magnetic head assembly 6.
8, speed sensor 66, and electric motor 50, as well as said device 20.2 set of lamps 19.21, numeric keyboard 18, and said on/off switch 76.
It consists of a 'battery power source 74 via a The electronic means of device 10 are divided into two main narrow sections shown in dashed bounded blocks or sections 94 and 96 in FIG. The first section 94 forms the read/write section of the device and consists of a voltage regulator or voltage stabilizer circuit 78 which receives power from the battery power supply 74 via an on/off switch 76. A first microcomputer 80 is placed in the center of the first portion 94. The first microcomputer 80 controls the functions of the first part 94 and communicates with the first storage device 79 . It is preferable that the first storage device 79 is a macroscopic ROM, and the function of the first microcomputer 80, that is, the reading of the device Jf! Contains control data regarding the functionality of write/write operations. The first portion 94 further includes:
Respective portions 70.7 of magnetic helad assembly 68
Block 8 containing recording/reproducing amplification circuitry in cooperation with 2
2, a block 84 containing speed sensor circuitry in cooperation with speed sensor 66, and a third block 86 containing motor control circuitry in cooperation with electric motor 50.

In the center of the second part 96 of the electronic means a second microcomputer 88 is arranged. A second microcomputer controls the functions of the second part 96 and communicates with the second storage device 87. The second storage device 87, which is likewise preferably a log-simplex ROM, contains data regarding the functions of the second microcomputer 88, ie the input/output functions of the device. The second portion 96 comprises the control processing and input/output portions of the device, as well as a block 90 consisting of one keyboard interface circuitry;
It includes a block 92 of display gray and lamp drive circuitry, and a power down circuit block 89.

The power down circuit block 89 allows the operator to turn on the keyboard 1 after a predetermined period of time has elapsed.
It works to knock down all the equipment to standby state without operating 8.

The device schematically shown in FIG. 1 functions as follows.

First, the device is powered on by the on/off switch 76 shown in FIG. When the device is powered on, the display 20 and two sets of lights illuminate for a few seconds, clearly indicating to the operator that the device is functioning properly. At the same time, the device runs internal test routines to check that all devices are functioning correctly. After a few seconds, guy spray 20 and most of the first set of lamps 190 will turn off. The first rung 19a of the first set of rungs 19 and the 1.9th rung 2 of the second set of lamps 21
Only lamps 1& and 2-7 lamps 21b continue to light up. Lamp 19a illuminates the word "group," and lamp 21a
and 21b illuminate the words "milk 2" and "reader", respectively.

Describe normal operating procedures. Immediately after powering up the device, all accessible storage of the device consisting of the RAM (Random Access Memory) of the second microcomputer 88 is erased and the device retains the permanent storage control data in the storage device 79.87. only exists. The two digits 19 & illuminating the word "group" prompt the operator to enter up to six numbers into the device via the numeric keys of the single key 18. When the operator starts inputting the group code numbers into the device using the numeric keys on the keyboard 18, the two codes 21B and 21b
goes out. If the operator enters an incorrect code, the code can be cleared by pressing the key labeled "Clear." The correct code for identifying the relevant group is displayed on display 2.
0 is displayed, the operator presses the key labeled "Step". As a result, the code displayed on the guy display 20 is stored in the RAM of the second microcomputer 88.
K is memorized, rung 19a goes out, and rung 19b illuminating the word "date" lights up. Run f19b prompts the operator to enter the actual date into the device by entering the number of the week and the number of the month using the numeric keys of the keyboard 18. Next, when the operator presses "Step", the data flashing on the actual date will be stored in the device and "
The "Date" lamp 19b goes out and the "Total" lamp 19c goes out.
lights up. At this stage the operator can enter three numerical codes corresponding to the total number of samples to be registered, ie to the total number of milk sample containers to be recorded or registered. The code representing the total number displayed on the f'4 spray 20 is stored in the device by pressing the "step" key as in IO]. As a result, the rung 19c is turned off, and the lamp 19d illuminating the word "cow" is turned on. However, typically at this point the device can be automatically switched to a power down or standby mode by power down circuit block 89. However, since the on/off switch has not been activated, the device remains in the on state. Activating the on/off switch clears the data previously entered into the device, ie regarding groups, dates and totals. On the other hand, until the on/off switch is activated, data regarding groups, dates and total numbers are stored in the device, i.e. in the second
remains in the RAM of the microcomputer 88.

The device is switched from power-down mode to power-up mode by pressing the "SELECT" key on keyboard 18. By pressing the "select" key at this stage, the rung 19d that illuminates the word "cow" lights up. The operator is now prompted to enter a three numeric code that identifies the actual cow. After checking the correct cow code displayed on display 20,
Press the "Step" key to store the code in the device. This turns off the lamp 19d and turns on the lamp 19e which illuminates the word "Code". This indicates that the operator can enter and store a one-numeric code identifying the health status of the horse. That is, press the first number key on the keyboard 18 and press the "step" key. If there is no particular comment on the general health of the cow, the operator simply presses the ``Step'' key and the lamp 19e goes out and the ``Yield'' button is pressed.
The lamp '19f indicating the word lights up. The operator now enters the three-digit code corresponding to the cow's yield, and by pressing the "step" key, the three-digit code corresponding to the cow's yield is stored in the device.

When the container 30 is stored in the opening 22 of the device 10, the motor 5
0 is input at this stage to rotate the drive shaft 60.

Rotation of the drive shaft 60 is detected by a speed sensor 66 and a block 84 containing speed sensor circuitry.
is registered in the first computer 80 of the device. The 600 rotations of the lateral movement shaft further increases the drive row 2.
62 and liquid sample container 30. Liquid sample container 3
While rotating through 0, the device sends a number of high level erase pulses to magnetic head section 79.72, causing magnetic strip 34.36 to be erased by the recording amplifier circuitry of block 82. After recording a high level erase pulse on the magnetic strips 34, 36, the microcomputer 80 switches the block 82 to regeneration mode while the motor continues to be turned on and the liquid sample container 30 continues to rotate. exchange. When the magnetic strip 34.36 is fully saturated,
The playback circuit elements of block 82 and the microcomputer 80 of the device 10 detect the gap in the annular magnetic strip 34.36 very easily as a shift in the playback signal level and, as a result, very easily detect the gap in the magnetic strip f34.3.
Detect the start of 6. At this stage, the device is ready to write the information entered and stored in the device in the method described above.

1 is sequentially inputted from the RAM section of the microcomputer 88 through the macrocomputer 80 to the recording amplifier circuit element of the block 82, and further supplied to the magnetic head section 70, 72 of the magnetic head assembly 68. A logic "1" is provided only to the upper magnetic head section 70 and a logic "0" is provided only to the lower magnetic head section 72. After performing the writing of information on the magnetic strips 34, 36 of the liquid sample container 30, the device automatically performs a read 9/check routine and writes the magnetic strips 7' of the container 30.
When reading information from 34.36 is permitted, the device is controlled by power down circuit block 89 to enter a power down or standby mode. If the information is not authorized, and the input information does not match the previous input routine, which was incorrect, the player display 20 will display an error message to notify the operator to repeat the input routine.

When the power-down circuit block 87 powers down the device, the last gutter, the code number for the cow's characteristics and the number for the cow's yield, are erased;
General information regarding previously stored groups, dates, and total numbers
- Evening continues to be held in the device.

As mentioned above, by pressing the "Select" key,
When the device is switched from a power-down mode to a power-up mode, a next liquid sample container 30 can be placed in the opening 22 of the device 10. Next, the registration cycle is executed. At this point, a key is operated on the keypad 18 to input into the device a number identifying the cow, a code number relating to the characteristics of the cow, and a number relating to the yield. These data, together with the previously memorized general data regarding the herd, date and total number of cows, are stored in the magnetic strip of the liquid sample container 30, f34.3 in the method.
6 is written on.

Alternatively, after turning on the on/off switch to start the device, or by pressing the “SELECT” key to switch the device from No.7 War Down mode to No.7 War Up mode, select “Milk 2” and “Read ” press one of the keys.

By pressing the "read" key, the information stored in the liquid sample container 30 housed in the opening 22 of the device is read, and the data is sequentially displayed on the display 20 by pressing the "step" key. One set of lamps 19, i.e. rung 19 as 19 bs 19
c.

The corresponding lamps 19d, 19e, and 19f1 are lit. By this reading operation, the numbers are
That is, they are displayed on the display 20 in the order identified by the left-to-right order of sumps 19a-19f.

Pressing the "Milk 2" key changes the device 10 to another writing or recording mode. In this mode, the operator is prompted to enter the data regarding the cow in question, the cow number, another code number, and other yield data. Different codes and different yields relate to cow condition and yield at different times of the day. The first recording is to be performed at the beginning of the day.
” mode is to be executed later on the same day. During the period from the first record to the second record, the condition of the cow clearly changes, so the first and second yields are probably not the same. Therefore, the second "code" and the second
1 yield” and the cow number correspond to the corresponding lamps 19d to 19.
While f is lit, input is made to the device in the above procedure by sequentially operating the 18 numeric keys and the "step" key. The operator writes this second [:j-do] into the RAM of the second microcomputer 88 in the device.
and a second "yield" and cow number, the microcomputer 80 switches the device to the reading mode, and then the data of the first registration or record is entered at the opening 22 of the device.
magnetic strip 34. of the liquid sample container 30 housed in the magnetic strip 34.
36 and transmitted through the regenerative amplification circuitry of block 82, through nine microcomputer beaters 80, and to a second microcomputer 88 for storage. At the same time, the gears of the magnetic strips 34, 36) are registered and the liquid sample container 30 is positioned relative to the magnetic head assembly 68. This arrangement ensures that the magnetic strips 34, 36 begin at each portion 70. of the magnetic head assembly 68.
72. Provided that the cow number entered in this "Milk 2" mode is equal to the number of the day read from the liquid sample container housed in the opening 22, and provided that the correct container is placed in the pick-up device. All data stored in the RAM of the second microcomputer is transferred to the first microcomputer 80, further transferred to the recording amplifier circuitry of block 82, inputted to the magnetic header assembly 68, and finally Magnetic strip 34.3 of liquid sample container 30
6 is written on. The device then automatically executes the read/check routine and, provided the information is accepted, changes to a power down mode under the control of power down circuit 89.

FIG. 5 is a cut away perspective view of the mechanical drive components of device 10 according to the invention. The components shown in FIG. 5 essentially correspond to those of the dotted border block 98 shown in FIG. In FIG. 5, components corresponding to those shown in FIGS. 1 to 4 are designated by the same numbers.

The center of the device 10 consists of a housing block 100, which forms the basis of the mechanical drive parts. The housing block 100 is provided with a top surface flange 102 and is made of the same material as the housing 12 of the device, namely high-impact expanded polystyrene. The container block 100 is provided with a recess 104. A main body portion 105 is provided within the recess 104 . Basically, the body portion 105 includes the magnetic head portions 70, 72 of the magnetic head assembly 68 and is square in shape. Square main body part 1
05, there is a device 10 shown in FIG.
An opening 22 is formed. Within the opening 22, the bottom of the liquid sample container 30 rests on the bottom surface 118 of the recess 104. Furthermore, the square main body portion 105 has surfaces 106, 108 .
110 into which the cylindrical outer surface of the liquid sample container 30 received within the opening 22 will fit. The body portion 105 further forms two four sides 114,116. The four surfaces 114.116 are each a plane 106.1
12 and 108.110. As is clear from FIG. 5, the magnetic head portion 70.72 protrudes from the concave surface 114;
The front surface of the liquid sample container 300 is adapted to maintain a predetermined distance from the external surface of the liquid sample container 30 so that the cylindrical external surface of the liquid sample container 300 protrudes from the magnetic head portion 70° 720 external surface of the flat surface 10, 6.108.1
10.112, the magnetic head portion 70.72 maintains a predetermined distance from the magnetic strip 34, 360 surface (the distance is indicated by A in FIG. 1).

Main body portion 10 relative to recess 104 of container block 100
5 position, that is, the recess plane 1 of the container block 100
The position of the magnetic head part 70.7 relative to the drive wheel 62 protruding from the mounting screw 120 is adjustable.

Two shield coogles 124.1, schematically shown in Figure 1.
26 are provided for connecting each of the magnetic head portions 70, 72 to the recording/reproducing platform width circuitry of block 82 shown in FIG.

In FIG. 5, motor 50 is mounted on bracket 122. In FIG. Bracket 122 is mechanically secured to housing 100. Cable 132, shown in FIG. 1, is used to connect motor 50 to motor control circuitry block 86. In FIG. 56 is a protruding tooth 5 which cooperates with a corresponding gear on the motor shut drive pulley 54 and a corresponding gear on the drive shaft idler pulley 58.
It is a belt with trout having 7.

A speed sensor 66 cooperating with the slit 65 of the speed wheel 64 is arranged on the glint circuit board 67 . Printed circuit board 67 has a multi-core cable 130 shown schematically in FIG. The multi-core cable 130 connects to the printed circuit board 6
7 and the speed sensor circuit element block 84 shown in FIG.

In implementing the above device, the following electronic components were used.

Use LM723 type switch mode power supply circuit for voltage regulator or voltage stabilizer circuit 78, +5 to 0 ■ rail
V and +12V were supplied. The first and second storage devices 79 and 87, respectively, and their respective microcomputers 80 and 88 were constructed with 80c39 microphone four-computer circuits.・9 wire down circuit block 87
was composed of 75494 integrated circuits. The f4 spray drive circuitry and the keyboard interface circuitry of block 92.90 are integrated circuit UDN 2981, U
Each was configured with LN2003. The motor control circuit including the /J word 2 register driver 2N2905 and the speed sensor block 84 including the Schmitt trigger were constructed using an integrated circuit LM339. The write or record amplifier of block 82 is comprised of integrated circuit 74c907, integrated circuit 74c907 Darlington transistor BD 67
5 and a complementary Darlington driver consisting of a BD676. The read #) or regenerative amplifier of block 82 is configured for each section, i.e. logic 1-
It consisted of six independent stages for each (IJ reading and logic '0' reading). The first stage is a 1 kHz Lp filter (low pass filter), the second stage is a 2 Hz HP 74 router (Hinosos filter), the third stage is a 1 kHz Lp filter,
The fourth stage was a precision rectifier, the fifth stage was a peak detector, and the sixth stage was a comparator.

Each of the first five stages is a multiplication operational amplifier LM
324, and a comparator comprising an integrated circuit LM339. The first and second lamps 19 and 21 and the display were each constructed of light emitting diodes. The battery power source 74 was a rechargeable Ni-Cd 12V storage battery with a capacity of 0.8AH. With the above, it has a read and write operation capacity of about 120,
A device with a continuous power-down operation time of 5 hours after charging the storage battery was obtained. Each read/write head of magnetic head assembly 68 has the following characteristics.

Magnetic gap = 100μm 1 inductance = 130
mH, DC impedance Z. =135 ohm.

The liquid sample container 30 was a cylindrical polycarbonate container with a ram height of 65 mm, an inner diameter of 30 mm, and three wall thicknesses. The magnetic strips 34, 36 were of the type described above, that is, they had a magnetic layer of iron oxide with a thickness of 40-50 μm and an epoxy resin retention layer with a thickness of 10 μm.

The apparatus produced the results shown in FIGS. 4 and 6. FIG. 4 shows the distance A(
The output of the comparator stage of the readout or regenerative amplifier portion of block 82 is shown as a function of unit quantity). The upper shaded area shows the signal output level from the comparator and the lower shaded area shows the discriminator level of the comparator triggered by the signal level provided by the readout or precision rectifier stage of the regeneration circuit. From FIG. 3, it is clearly seen that signal levels up to 0.6- can be detected. In fact, excellent write/read performance was obtained even at a distance of one inch.

FIG. 6 shows the respective outputs from the logic "1" and logic "0" comparator stages in solid and dotted lines. The offset of the two curves is simply due to the offset of the pen and serves to better illustrate the inherent relationship between the two curves.

In fact, the total signal from the two comparator stages has 80 bits. As is clear from Figure 6, logic “0”
Snowy orgasms and logical "1" snowy orgasms do not exist at the same time. When recording the curve in Figure 6.

The liquid sample container 30 was rotated such that one rotation time of the liquid sample container 30 was 450 ms. 80 bit read 9
The time was 325 ms.

Although the invention has been described in terms of preferred embodiments, it will be apparent to those skilled in the art that the invention can be adapted to suit the particular needs of the invention. Therefore, when data is recorded only for samples from a specific section or a specific location, automatic procedures for various operations can be omitted.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an apparatus for writing and reading information on a magnetic information medium as an embodiment of the present invention, and FIG. 2 is a schematic diagram of an apparatus for writing information on a magnetic strip of a liquid sample container according to the present invention. FIG. 3 is a partially cutaway perspective view of a liquid sample container; FIG. 4 is a perspective view of a preferred embodiment of the apparatus;
FIG. 5 is a diagram illustrating read output signal strength as a function of distance between a write/read head and a magnetic registration medium; FIG. FIG. 6 is a characteristic curve diagram of the read output signal. 18: Keyboard, 19a to f: Lamp, 20: f'
Ispray, 21a, b: Lamp, 30: Liquid sample container, 34.36: Magnetic strip, 50: Motor, 56:
Drive belt, 58: Pivoting shaft idler pulley, 60: Drive shaft, 62: Drive roller, 64: Speed wheel,
65 Nisritto, 66: Speed sensor, 67: Printed circuit board, 68: Magnetic head assembly, 70, 72: Magnetic head portion, 78 Double pressure rectangular circuit, 79; Storage device,
80: Microcomputer, 82 Two recording/reproduction amplifier circuit element containing block, 84 Two-speed mt sensor circuit element containing block, 86: Motor control circuit element containing block, 8
7: Storage device, 882 microcomputer, 89: Wardown circuit block, 90: Keyboard interface circuit element containing block, 92 near inch display and lamp JUm!+ circuit element containing block. ) April 18, 1985 Manabu Shiga, Commissioner of the Japan Patent Office1, Indication of the case, 1982 Patent Application No. 2565892, Name of the invention Information writing and reading device for magnetic information material3, Person making the amendment Relationship to the case Patent applicant name: Actisel Skabuen, Foss Electrif 4, Agent 5, Date of amendment order (Shipping date) 6. Subject of amendment (υ Specification) 2) Drawings 7, Contents of amendment 111 Engraving of the description (no change in content) (2) Engraving of drawings (no change in content) 8. List of attached documents (1) Engraving details layer 2 1 copy (2) 1 engraving drawing

Claims (1)

[Scope of Claims] 1. An information writing/reading device for a magnetic information carrier, comprising: a magnetic write head for writing information to the magnetic information carrier; and a magnetic write head for writing information to the magnetic information carrier; and an electronic input means for receiving an information signal and supplying the information to the magnetic convolution head, wherein the magnetic convolution head and the magnetic information The carrier is about 50 to 1000 μm, preferably about 50 to 600 μm when relatively driven by the driving means.
m1 most preferably spaced apart from each other by about 100-200 m, and wherein the magnetic gap of the magnetic write head is about 50-200 m1, preferably 50-100 m1, most preferably 100 m. 2. The apparatus according to claim 1, further comprising: a magnetic read head for reading information from the magnetic information carrier; and a signal received from the magnetic read head and stored in the magnetic information carrier. an electronic reading means for supplying as output an information signal corresponding to the information, the reading head and the magnetic information carrier comprising:
When relatively driven by the driving means, about 50
1000 μm, preferably about 50-600 μm, and most preferably about 50-100 μm, the magnetic gap of the magnetic read head is about 10-10 μm.
0 ttm, preferably 50-100 μm, most preferably 100 μm. 3. Scope of BVt Requirement In the device described in paragraph 2,
The apparatus wherein the magnetic read head and the magnetic read head are comprised of a single magnetic head. 4. The apparatus according to claim 3, wherein the drive means moves the magnetic information carrier relative to the magnetic head. 5. A device according to any one of claims 1 to 4, wherein the magnetic information carrier has a cylindrical external surface and at least one magnetic strip is arranged on the cylindrical external surface. the device, the liquid sample container being housed in the device; 6. The apparatus according to claim 5, further comprising digital input means for inputting digital information signals to the electronic convolution means, and for receiving digital information signals from the output of the electronic reading means. said device comprising digital output means of. 7. Apparatus according to claim 6, wherein the digital input means is provided for converting an input signal supplied to the digital input means into an all-digital signal. 8. Apparatus according to claim 7, wherein said digital input means is a numeric or alphanumeric keyboard and said digital output means is a numeric or alphanumeric display. , 9. The device according to claim 7 or 8, wherein the liquid sample container consists of two independent magnetic strips for storing a logic "0" and a logic "1", respectively; The apparatus wherein the magnetic head has two magnetic head sections corresponding to respective magnetic strips of the liquid sample container. 10. The device according to any one of claims 5 to 9, wherein the drive means Fi, an electric motor,
and a drive shaft having a drive roller arranged to mate with a cylindrical outer surface of the liquid sample container, the motor and the drive shaft being interconnected by a belt transmission means, the belt transmission means being a motor. The device comprises a drive pulley, a drive shaft idler pulley, and a belt connecting the motor drive pulley and the drive shaft idler pulley. 11. Apparatus according to any one of claims 6 to 10, further comprising computer means for controlling the overall functioning of the apparatus. 12. The apparatus of claim 11, wherein said computer means comprises a first computer part and a second computer part in communication with each other, said first computer part having said electronic writing and 13. The apparatus, wherein the apparatus is provided for controlling the functions of the reading means and the driving means, and the second computer means is provided for controlling the functions of the digital input means and the digital output means. 13. The apparatus according to any of claims 1 to 12, wherein the apparatus is a battery-powered stain source.