JPS5947678A - Pattern recognizer - Google Patents

Abstract

PURPOSE:To ensure the input of handwritten information with a recognizer used to a video tane recorder, etc., by arraying recognizable blocks to a sheet body when this sheet body is traced. CONSTITUTION:When an information source 30 is traced by a pen-shaped optical input information detector 27, the pulse trains of different waveform are obtained from a light reflection pattern printed on the sheet. These pulse trains are sent to an information recognizing part 40 and fetched to a memory 43 as a digital data. The signals showing A-G fed into the memory 43 are compared with the signals in a memory 44 to discriminate each input numeric character.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a pattern recognition device used for inputting external information or program information to, for example, a psigram timer of a video tape recorder.

[Technical background of the invention]

Some video tape recorders have the ability to automatically start recording at that time by reserving a recording time and channel. Reserve recording times and channels. Does this mean that the desired data must be manually entered in advance into the microcomputer (which can operate a timer) built into the video tape recorder? 11-Taste your breath.

A common method for inputting desired data, that is, various types of information, to the microcomputer of this bucket video tape recorder is to operate a switch integrally attached to the MiJ front panel of the device. For example, to input time information, press the time 4M constant key, then press the numeric keys.
・The key output information changes, and this can be confirmed on the display. Therefore, the user only has to release the key he is pressing when the desired number is displayed.

[Problems with background technology]

However, as described above, according to the method of inputting information by providing operation keys on the front panel, it is necessary to provide operation keys for various purposes, resulting in a complicated structure of the front panel. In addition, the operation of the operation keys becomes complicated, and errors in inputting 'IN' information become more frequent. Furthermore, the manufacturing cost of the control unit tends to be expensive due to the fact that it is a simple switch.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a pattern recognition device that allows a user to input handwritten information manually.

[Summary of the invention]

This invention achieves the above object by arranging blocks that can identify line spacing and left and right tracing by printing on the sheet body when a pen-shaped optical human power information detection device traces on the sheet body. This is what I did to get it.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure shows an input information detection device, and the external appearance of the device shown in FIG. 2A is pen-shaped.

In FIG. 1(a), 20 is an outer circumferential cylinder, and the tip thereof is biased by a spring 21 from this cylinder.
A pen tip member 22 which is elastically yellowed is provided. Inside this pen tip member 22, there is a flexible part,
A light emitting element 23 and a light receiving element 24 are provided which are partitioned.

When the light emitted from the light emitting element 23 is reflected by the reflecting section 25, it can enter the light receiving element 24.

This input information detection device 27 is provided with a switch SWI that is turned on when the fingertip touches it, and a switch SW that is turned on when the pen tip 22 is pushed up against the spring 2.Switch SWI
*SW! And the electrical connection of the light emitting element 23 is the first
It is configured as shown in the figure (bJ), and the switch sw,
, sw are both turned on, power is applied to the light emitting element 23. On the other hand, the light receiving element 24 is incorporated in the light detection circuit as shown in FIG. It can be output from.

! Figure 82 shows the information source 30.
are the light reflection pattern portions J 1 , . . , printed on the sheet.
92,3 J. The light reflection pattern portion 3 includes large, small, and medium black blocks 31a and 31b between the lateral forces.
*31c are lined up, and the light reflection pattern part 32 (l-1: person, small, small, medium blocks 32a, 32b, 32c *32
d. The light reflection pattern section 33 has large, small, small, small, medium blocks, ? J&,,9. ? b * 33c, 33d
, 33e are arranged. and a light reflection pattern section 3).

32, ? J are aligned vertically.

Next, the input information detection device 27 shown in FIG.
The pulse train obtained when tracing the IJ information source 3θ will be explained.

Now, as shown in FIG.
-G), a pulse train as shown in FIG. 3 is obtained corresponding to each trace. And each pulse train Ap, Bp.

...The waveforms of each cp will be different.

The above-mentioned pulse train is output from the input information detection device 27 and sent to an information recognition section using a microcomputer.

FIG. 4 shows the information detection unit 4o2, in which the data detection device 40 is connected to a random access memory (hereinafter referred to as RAM) through the interface circuit 4.
43 as digital data. The information recognition unit 40 includes a central processing unit (hereinafter referred to as CPU) 42,
It has a read-only memory (hereinafter referred to as ROM) 44 and the like. Furthermore, a display 45 is connected to display the input information.

Next, when the information source 30 attempts to generate numbers, the input information detection device 27 writes as shown by the broken line in FIG.

If an attempt is made to input "1", the input as shown by a locus 51 is performed. FIG. 5 illustrates trace trajectories 51 to 60 on the information source 30 when writing the numbers "1" to r9J rOJ.

Now, if you enter the number "1", the trace trajectory will be
This corresponds to rGJ in FIG. In addition, when the number "2" is entered manually, it corresponds to the combination of rAJ "G" and "F" of 2nd I81. Similarly, numbers “3” to r9J rOJ
As shown in the table below! ! By matching L6, each input digit can be identified.

Therefore, by comparing and collating the A to G hail signal input into the RAM 4.9 with the signal in the ROM 44, it is possible to know what number has been written. Here, when entering a number, the user presses and holds the switch SWl& to keep it in the on state each time he/she enters one character. The microcomputer is set so that the information from when the switch SW is turned on until it is turned off is determined as data corresponding to one character.

((Figure 36 shows the processing process when writing one character into the memory area for 1 ft reportage 9gram.

Step S1 is a start stage when the program input switch is turned on. When this process is started, in step S, it is determined whether the switch SW of the detection device 27 is on or off. If it is on, the liking for one character starts, so in step S3 Then, it is determined whether the switch SWz is off or on. Since the fact that the switch SW is on means that tracing is performed, the process moves to the next step S4, and it is determined whether or not the first input information is Heilepel. This is to prevent essential information from being included, and to ensure that 1n information is included from the first time block 1 is issued. When the first input information becomes Heilepel, the process moves to step S, where the input information is digitized and stored in the input 16 information storage area of the RAM 4J. This convergence process continues until both switches SW and *SW* are turned off. (Step 56-8t
) This is for example in the case of "4" or "5", since there is a moment when the switch SW2 is turned off, so that the process does not end at this time. step.

When it is determined at S that the information collection for one character has ended,
Proceeding to step S9, time normalization processing of the input information is performed. This is because the pulse train shown in FIG. 3 is not always input within a fixed time because the writing speed varies depending on the user. (The normalization process will be explained in Fig. 7) When the normalization process is completed and the combination of trajectories for one character using A-G as shown in the table above is determined, this input information code and In step 810, a comparison process is performed with a registered pattern code registered in the ROM 44 in advance.

Then, in step Sll, if the input information code is not assigned to the registered pattern code On, step S1? Then, an error is displayed on the six indicators 45.

Additionally, if the input information code matches any one of the registered pattern codes, the number corresponding to the registered pattern code is displayed on the display 45 for user confirmation (step 5tt). The process moves to step Sla to determine whether or not to erase. If the displayed number is the one desired by the user, after a certain period of time has elapsed, the process moves to step s14, the registered pattern code or data corresponding thereto is stored in the program memory, and the process moves to step 8+11. In addition, if the extinguishing switch is operated within a certain period of time in step StS, the process moves to step S1s, and the RA
Clear the input information area in MdJ and return to step S.

The process also moves to step SIs when the error display is performed. In step 5III, it is determined whether the program start switch is on or off. If the program start switch is not turned off within the -duration time, the process returns to step S. If it is turned off, the program progresses to T in step 5i11.

FIG. 7 shows serial manual information when, for example, the number "2" is input. This data is sampled using a bistable reference clock, and the high level time and low level time are counted. This time count data is divided into data from the rising edge of the pulse to the falling edge and from the falling edge to the rising edge of the pulse.
It is stored in the input information area of AM4.9. Figure 7fa
), the high level and low level periods of the pulse train are t, t21t, respectively.

...tl. Then, the period data is shown in Figure 7 (b
) for each period data area (6) of the input information area 65.
5t, 65t, 65t8. ...65tn).

Next, normalization processing is performed, for example, as follows. First, the area 65t1 of the high level period is searched in order from the area 65t1,
65t3, 65L.

Read out at least three time data, the shortest period is 1? i-Find the hail data Ds. Next, each period II (t
+ *tt...tn) data (DI~Dn
), normalization is performed and the normalized data CD I 1 ``'' D 1 n) is replaced in the normalized input information area 66 as shown in FIG. 7(c).

The period of each data (DII-DI) is from t28 to ttn.

The flowchart of the above process is shown in step 81 of the f18 diagram.
10~S II! becomes. Next, a determination process is performed on the normalized input information.

First, in step S3, data D11 of the high level period 11+ is read out. Next, this data D11 is
A determination is made as to which of the large, medium, and small blocks described in FIG. 2 is to be matched.

This is suitable constant data to be compared, F*F1
This is possible by relying on teFss'Th. In other words, the data Fll l Fil I is set so that Fit<Dll...Large block Fxa<D II<F tt...Medium block DIl≦FiM...Small block pl,
Define.

Based on the above judgment, the data DI+ dog is medium.

Any of the small blocks is step 5114@5115@8
1111, and the determination result is once stored in the determination memo I) 70. (See FIG. 9) Next, in step 5IIT, the next low level data D is read out. Then, in step S+ta, D,...
) F, , will be judged. This is because if the data D□2 has a long period, it means that the pen tip was traced in the vertical direction. Therefore, when Dst>F 14, it is determined in step 81111 that the data is in the trajectory G direction, and the determination memory 7
Store at 0. When Dll<F14, the next high level data is read out at Disk step 5tzo, and the process returns to step 5lK4. By rehearsing such processing, the judgment memory 70 stores "large, small, medium, G, large, G."

The determination results of small, medium, small, small, small, large, and GJ are stored in each of the judgment areas 7Q and 70n. Here, if the judgment results G exist next to each other, this part can be rewritten as G as a whole: "Large, small, medium, G, small, medium, small."

Small, small, large, G.” Here, by looking at the part starting from the large or medium data and rewriting it as "AGFG", the data "2""AGFJ" is the closest.

The above determination process can be performed in various ways depending on the program, and the length of the low level period t - first detected, G
Decide on , then large.

The determination may be made by detecting data corresponding to medium blocks and determining how many data corresponding to small blocks are present between them.

〔Effect of the invention〕

As mentioned above, this invention enables character erasure@
It is possible to provide a pattern-8a device that can manually input data and input information in six steps.

[Brief explanation of the drawing]

FIGS. 1(a), (b), and (e) are cross sections showing a structural example of an input information detection device according to the present invention and a circuit diagram used therein, and FIG. 2 is an example of an information source according to the present invention. 3 is a trace direction identification waveform diagram of the H information source shown in FIG. 2, FIG. 4 is a system configuration diagram showing an embodiment of the present invention, and FIG. 5 is an example of information input. Figure 6 is a flowchart of the program used in the system shown in Figure 4, and Figures 7 (a), (b), and (c) are data processing examples of the device shown in Figure 4. 8 is a flowchart of the program used in the system of FIG. 4, and FIG. 9 is a diagram of the data processing of the device of FIG. 4. FIG. 2 is a memory area configuration diagram shown in FIG. 27... Input information detection device, 30... Information source, 40
...Information g Oribe, 41...Interface circuit,
42...CPU, 43...RAM, 44...RO
M0 applicant's agent Patent attorney Takehiko Suzue 409

Claims (1)

[Claims] (1) Pattern blocks with different amounts of light reflection from the sheet body are arranged in a repeating manner, and the block arrangement can be traced in the horizontal direction, left and right, and vertically, based on the size of the blocks and the difference in the horizontal and vertical intervals. A 1h information source that can identify direction traces, an input information detection device that optically reads the block arrangement state by tracing on these 15 information sources, and converts it into serial data, and this human power and IT'J information source. A pattern recognition system characterized by being completely equipped with a means for normalizing the 1-hour report manually inputted from a detection device and comparing it with pre-stored data to judge the entire trace trajectory of the 1-hour report detection device. Device. (2J tjIJ) As for the arrangement of the pattern blocks, the sizes of the blocks that can be arranged in the horizontal direction are different, so that the left side and stone side traces can be distinguished, and in the vertical direction, the block spacing is different from the horizontal spacing. So,
The row identification is arranged horizontally and the number of squid blocks is different.Special 1J:'tSpecial ♂10m 珑のRAN U口 1st term from the first paragraph of the pattern recognition made by ffli-ffli aL