JP3310398B2 - Handwriting data input device and handwriting data recognition system using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwritten data input device, and more particularly to a handwritten data input device suitable for directly inputting a score of a test answer, a result of a marking operation in an inventory check operation, etc. to a data processing device. The present invention relates to an apparatus and a handwriting data recognition system using the same.

[0002]

2. Description of the Related Art In the past, scoring and inventory management of answers were performed by using a general writing instrument such as a red ball-point pen or the like.
It is common to fill in the data itself, look at it and input it to the data processing device with a data input device such as a keyboard, and perform the tallying and statistical processing. As a method for automatically performing this, a method using a mark sheet method or a coordinate input device can be considered. However, the system is large-scale, and the price is not particularly high for individual users to purchase. In order to solve this problem, a device for inputting a symbol is realized by detecting a pen-up and a pen-down of a writing instrument and detecting a time difference between them. This is because the pen is slidably attached to the holder, and when the pen is applied to the answer sheet etc. for writing symbols, the pen slides and the mechanical switch closes, and when the pen is lifted after writing, the pen slides Return to the original position and open the mechanical switch. By inputting and determining the pen-up / down time, simple symbol recognition is performed.

[0003] As a publicly known example of this case, there is, for example, Japanese Patent Application Laid-Open No. 58-159191.

[0004]

The currently realized symbol input device uses a mechanical switch to detect pen-up and pen-down, requires a dedicated pen, and is expensive. When using a plurality of writing instruments such as felt pens, individual designs for them are required, and the variety of products is increased, resulting in an increase in price. The mechanical switch has a relatively short life,
In order to solve this, use of a mechanism such as a photo switch is conceivable, but it is expensive, and the stroke before the switch works when the pen is down is large.
There is an operation in which the pen tip sinks in accordance with the switch operation, resulting in a decrease in writing quality.

SUMMARY OF THE INVENTION An object of the present invention is to provide a writing data input device which has no stroke at the time of pen up and down and has high sensitivity .

It is another object of the present invention to provide a writing data input device which can use a general writing instrument and has high sensitivity .

[0007] Still another object of the present invention is as described above.
An object of the present invention is to provide a recognition system for recognizing handwritten data using an input device .

[0008]

SUMMARY OF THE INVENTION The present invention provides a method for inputting writing data.
The force device includes means for detecting a vibration caused by a writing operation of the writing instrument, and the detecting means includes a microphone for detecting the vibration.
Microphone unit and one end of the microphone unit
An elastic member attached to the detection opening;
A member serving as a weight attached to the end;
The purpose is achieved by recognizing written characters and symbols from the output of . This elastic member can be tubular or
The detection opening side of the microphone unit is the opening side.
Container shape. The detecting means includes:
It can be attached to holding means for holding the writing implement. Ma
Switch for switching the mode
It may be provided in a force device.

Also , a handwriting data recognition system according to the present invention is provided.
Means for detecting vibration caused by the writing operation of the writing implement,
In response to the output of this detection means,
Means for recognizing a given character or symbol.
Is a microphone unit that detects vibration and
The end is attached to the detection opening of the microphone unit.
Elastic member, and a weight attached to the other end of the elastic member.
Member.

[0010]

According to the present invention, a writing instrument in writing operation is detected by the microphone vibration generated between the media. Symbols, depends vibration symbols, types of characters when filling out a character, plural kinds of symbols by identifying this, it is possible to recognize the character, it is possible to perform direct data input. One end is attached to the detection opening of the microphone unit
And an elastic member attached to the other end of the elastic member.
The weight member is used to shut off external noise.
In addition, the sensitivity of vibration detection is improved. This weight has its inertia
To keep the stationary position,
It works to give sound pressure to the unit. This elastic member is
Detection of tube or above microphone unit
If it is a container shape with the mouth side as the opening side, the elastic member
Increases, and the sensitivity further increases.

[0011] The detecting means is a writing instrument holding means (cap,
By attaching to a lip or the like, various writing tools can be replaced and used, and the writing tool can be selected according to the application. Note that the mode switching switch
Input the writing data input device only when desired
be able to.

[0012]

1 shows a writing data input device according to the present invention. The writing instrument 1 is for inputting symbols such as "O" and "X" on answer sheets and the like, and generally used pens, ball pens, felt pens, pencils, red pencils and the like can be used. The pen cap portion 3 is formed with a taper or the like in a fitting portion with the writing instrument 1 so that these various writing instruments can be used. The pen cap unit 3 includes a switch 5 used for mode switching and the like in addition to having the vibration detecting unit 4 which is a feature of the present invention inside. When the switch 5 is pressed, an input state is set. These signals are guided from the connection cable 6 to the signal processing circuit 10 in FIG.

FIG. 2 shows writing instruments "〇", "x", "△",
This is vibration data that is an output signal of the vibration detection unit 4 when “「 ”is written. Vibrations when the tip 2 of the writing instrument 1 moves on the paper surface appear as these waveforms. These are in a non-vibration state when the writing implement 1 is at rest, so that distinctive features such as when “△” are written are particularly apparent. This is not possible with the conventional method of detecting only pen-up and down, in which "区別" cannot be distinguished. Because "ば" is written as pen-down, it cannot be distinguished from "○". Each waveform in FIG. 2 corresponds to the signal processing circuit 1 in FIG.
The signal is guided to 0, amplified by the amplifier circuit 7, and converted by the waveform shaping / processing circuit 8 into a signal having a pulse width that the data processing device 11 can easily see.

The interface circuit 9 is responsible for transmitting and receiving these signals. In the example of FIG. 3, the data processing device 11 receives the symbol judgment from the signal detected by the vibration detection unit 4. However, the signal processing circuit 10 is provided with a one-chip microcomputer and the like. Symbol judgment can be performed internally.

The data processing device 11 has a pattern of each symbol, and recognizes a symbol written by the writing implement 1 from the input pulse. As shown in FIG. 2, the vibration over a certain period of time t1 is determined to be “Δ”, and the vibration of relatively short t2, the subsequent non-vibration of relatively long t3, and the subsequent vibration of relatively short t4 The pattern is determined to be "x". The relatively short vibration patterns at t5, t7, and t9 and the relatively short vibration-free patterns at t6 and t8 between them are “△”.
Is determined. Further, one vibration pattern of relatively short time t10 is recognized as “レ”. By having various patterns in the data processing device, it is possible to identify not only relatively simple symbols such as “Δ” and “X” but also numerals and more complicated characters.

FIG. 4 shows the inside of the pen cap unit 3. As the vibration detecting unit 4, an elastic member 13 is attached to the sound detection side (opening) of the microphone unit 12, and the opening is closed. To reduce noise and improve sensitivity to vibration detection. The weight 14 is attached to the elastic member 13. Even when the pen cap portion 3 and the microphone unit 12 vibrate due to vibration from the writing instrument 1, the weight 14 is stopped by its own inertia, so that the elastic member 13 is relatively attached to the microphone unit 12. It acts to give sound pressure through Even if the microphone unit 12 itself vibrates, if the diaphragm and the surrounding air vibrate similarly, the detection as sound pressure is not performed. Normally, the microphone works effectively because the microphone is fixed, and there is vibration around the microphone and sound pressure is transmitted, so that voice and vibration are detected. 5 and 6 show cross sections of the vibration detection unit 4 of FIG. The elastic member 13 is deformed by the vibration from the writing implement 1 and the weight 14 and the microphone unit 12 relatively move, whereby a part (R portion) of the deformed elastic member 13 is moved to the microphone unit 1.
A pressure change is applied to the air chamber 17 in such a manner as to protrude into the opening 2 to move the diaphragm 18 and detect vibration.

Here, as the elastic member 13 to be inserted between the weight 14 and the microphone unit 12, a tube-shaped member made of rubber or the like or a container-shaped material with the weight 14 closed is used in addition to a lump of rubber or the like. If used, the change in pressure applied to the opening of the microphone unit 12 with respect to the same vibration increases, and the sensitivity can be increased. For the same force, the displacement of the elastic member increases, and the change in the internal pressure with respect to the displacement increases, so that the sound pressure applied to the microphone unit 12 increases. FIG. 7 is a cross-sectional view showing an example in which a tube-like member 13a made of rubber or the like is used as the elastic member 13, and FIG. 8 shows an example in which a container-like member 13b whose weight 14 is closed is used as the elastic member 13. FIG.

FIG. 9 shows an example in which the writing instrument 1 is held so as to penetrate the grip 19, and the vibration detector 4 is built in the grip 19. In the embodiment of FIG. 1, if the writing implement 1 is long, the whole may be long and it may be difficult to write, but this example solves this. Further, the switch 5 can be provided at a position where it can be easily pressed.

In the above, an example has been shown in which a vibration detection unit is mounted on the writing instrument side. Conversely, vibrations at the time of writing a symbol are detected by a vibration detection sheet 15 spread under a medium on which the symbol is written. An example is shown in FIG. Ball pen 1 without detector
The vibration at the time of entry is detected by the vibration detection sheet 15 on which the vibration detection unit 16 is mounted. FIG. 11 shows a sectional view. The signal detected by the vibration detection sheet 15 is used to determine a symbol by the signal processing circuit 10 and the data processing device shown in FIG.

[0020]

According to the present invention , an expensive coordinate input device and O
Without using a CR device, it is possible to automatically input a symbol such as automatic marking of answers and stock availability based on vibration data of a general writing instrument. Especially writing instrument holders (caps,
By using a structure in which a vibration detector is attached to a grip or the like , a commercially available ballpoint pen, pencil, or the like can be used. The problem with conventional nib pressure due to mechanical problem occurring writing feeling and a decrease switch life displacements switch with is solved by using a vibration detector. Soshi
Open one end of the elastic member
Attach to the mouth and attach the weight member to the other end of this elastic member.
To reduce external noise
In addition, the sensitivity of vibration detection is improved. This elastic member is
Detection opening in tube or microphone unit
Sensitivity can be further improved if the container is shaped like an opening on the side.
To In addition, the provision of a mode switch
More specifically, the writing data input device is set to the input state only when desired.
The writing instrument for data entry
It can also be used as a tool.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a writing data input device of the present invention.

FIG. 2 is a vibration waveform diagram detected by a vibration detector.

FIG. 3 is a block diagram showing an embodiment of a handwriting data recognition system according to the present invention.

FIG. 4 is a diagram showing a specific example of a vibration detection unit.

FIG. 5 is a cross-sectional view illustrating the vibration detection unit of FIG.

FIG. 6 is a cross-sectional view illustrating a vibration detection unit as in FIG. 5;

FIG. 7 is a sectional view showing another example of the vibration detection unit.

FIG. 8 is a sectional view showing still another example of the vibration detection unit.

FIG. 9 is a diagram showing another embodiment of the writing data input device of the present invention.

FIG. 10 is a diagram showing an example of a handwriting data input device using a vibration detection sheet.

FIG. 11 is a diagram showing a cross section of the vibration detection unit in FIG. 10;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Writing implement, 3 ... Pen cap part, 4 and 16 ... Vibration detection part, 6 ... Connection cable, 7 ... Amplifier circuit, 8 ... Waveform shaping / processing circuit, 9 ... Interface circuit, 10 ... Signal processing circuit, 11 data processing device, 12 microphone unit, 13 elastic member, 14 weight, 15 vibration detection sheet, 17 air chamber, 18 diaphragm

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsuru Kitahashi 3-10-22 Sakae, Naka-ku, Nagoya City, Aichi Prefecture Inside Hitachi Chubu Software Co., Ltd. No. Hitachi Chubu Software Co., Ltd. (72) Inventor Takashi Shinkai 3-142 Hongo, Meito-ku, Nagoya City, Aichi Prefecture No. 603, No. 603 (72) Inventor Tetsuo Machida 1 Ikegami Haruokacho, Owariasahi City, Aichi Prefecture Hitachi, Ltd. Office System (56) References JP-A-51-146148 (JP, A) JP-A-51-93636 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 3/033 310 G06F 3/033 320 G06F 3/03 380

Claims (5)

(57) [Claims] An apparatus for detecting vibration caused by a writing operation of a writing instrument and outputting data representing the detected vibration, wherein the detecting means includes a microcomputer for detecting the vibration.
A microphone unit and one end of the microphone unit
An elastic member attached to the detection opening of the knit;
Handwritten data input device characterized by chromatic and members serving as weights attached to the other end of the member. 2. The elastic member according to claim 1, wherein the elastic member has a tubular shape.
The detection opening side of the microphone unit shall be the opening side.
The writing data input device according to claim 1, wherein the writing data input device is a container-shaped elastic member . 3. The holding means for holding the writing instrument.
Claim, characterized in that attached to the lifting means 1 also
Is a writing data input device according to 2. 4. A switch for mode switching is further provided.
Handwritten data input device <br/> according to any one of claims 1 to 3, characterized in that it has. 5. A vibration caused by a writing operation of a writing implement is detected.
Means for receiving the output of the detecting means,
Means for recognizing written characters and symbols,
The detecting means is a microphone unit that detects vibration
And one end thereof is a detection opening of the microphone unit.
And an elastic member attached to the other end of the elastic member
Brush Symbol data recognition system that, comprising a member to be obtained weight.