JPS58206275A - Reading device - Google Patents

Abstract

PURPOSE:To read only a desired part on an original, by enclosing the desired part of an original with a frame of a prescribed color such as red, etc. CONSTITUTION:The picture signal (a) is set at a high level when the black parts of a frame 3 and an original 1 are read and then set at a low level when the white parts are read respectively. The picture signal (h) transmitted through a red filter 7 is set at a level equal to that obtained when the white parts are read and in case the frame 3 is read. A frame section detecting circuit consisting of an exculisve NOR gate 11 detects a section where signals (a) and (b) are set high and low levels respectively as a section of the frame 3. At the same time, an effective picture signal extracting circuit consisting of parts 12-30 extracts only the signals existing between an odd-numbered frame and the next even-numbered frame excluding the frame sections having lengths longer than a prescribed value among signals (a) and delivers these extracted signals to a terminal 31. Therefore only signals (a) that read the frame 3 and a desired part 2 within the frame 3 are obtained at the terminal 31. The signals (a) of other parts are invalidated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a facsimile machine or the like that uses an original i'(+j
It is related to the reading device that reads the text.

With this conventional reading device, even if only a part of the document is needed, it is not possible to scan only the necessary part, and the unnecessary parts around it are also read.

Therefore, if you go down, the facsimile machine's 'kA'B'
However, this method has the disadvantage that the unavoidable part of the image is transmitted to the sender, which results in unnecessary transmission time, resulting in a loss of time, expense, and time.

Also, if there is a part of the manuscript that you do not want the other person to see, there is a drawback that you cannot erase that part to prevent it from being sent.

Misfire #4 was made in order to eliminate the drawbacks of the previous 46. If you surround the necessary part of the manuscript with a frame of a certain chromatic color, such as red, the part within that frame will be The purpose is to provide an additional reading arrangement that only reads .

Reading device according to the present study: R Law 1. The light beam coming from the original is divided into two light beams by the light beam splitting means, and one of the divided light beams is made incident on the first photoelectric conversion element, while the other is made to enter the second nine'fil1 conversion element through a filter that selectively transmits light of a certain wavelength, and the first photoelectric conversion element obtained based on the output of the first photoelectric conversion element r. The image signal and the output of the second optical 1E conversion element (
/(By comparing the second image signal obtained based on a frame section, and the frame section (L
': Only the signal of 11.10j between the odd-numbered frame section counting from 21E and the next even-numbered frame section of 1 is valid.

Hereinafter, the present invention will be described in detail with reference to embodiments 1 and 5 shown in the drawings.

Figure 1 is a diagram showing an example of a manuscript in which the necessary parts are enclosed in a red box.If the necessary parts 2 of the manuscript 1 are enclosed in a red frame 3 using a red pencil, a red felt-tip pen, etc. Only frame 3 and necessary part 2 are read. 1k, FIG. ? ,.

FIGS. 3 and 41]1 are circuit configuration diagrams of the collecting device, and 81.1 of FIG. In S2/J', San
This is a timing diagram of the valley signal of this device when reading the line.

In FIG. 2, reference numeral 4 denotes a lens. It is divided into two luminous fluxes by the transmission and grinding 5. One of the two luminous fluxes is converged on the light receiving surface of the photoelectric conversion element 6 adjacent to page 1. The other light beam passes through the red filter 7 and forms an image on the light receiving surface of the second photoelectric conversion element 8. Here, the first photoelectric conversion element Bl>the first photoelectric conversion element 6 and the second optical conversion element Both f-8 have the same feeling IW in all i and +J areas.In addition, each of the above parts 4 to 8
The reading optical system is configured to sequentially scan the document.

9 amplifies the output of the first photoelectric conversion element 6 and converts it into the first L'
) A first picture signal amplifier 10 serves as a picture signal d, and a second picture signal amplifier 10 amplifies the output of the photoelectric conversion element 8 of the first unit to produce a second picture 11. 11 is the first image signal a
and the second ii! j i'i:? This is an exclusive Not (gate) which receives the signal as an input, and this gate 11 constitutes the interval detection circuit in this embodiment.

The output terminal of the exclusive NOR gate 11 is
One input terminal of the 2-person OR gate 12 3-person NAND
It is connected to one input terminal of the gate 13 and one end of the resistor 14, and the other end of the resistor 14 is connected to the capacitor 1.
It is grounded via 5. iiJ riα The other input terminal of the OR gate 12 and the other terminal of the t'1 AND gate 13 are connected to the Q output terminal of the kf flip-flop 16 -C. Front, 1JNAND gate 1
The remaining input terminal of 3 is connected to resistor 14 and capacitor 1.
Connection with 5, l, i via inverter 17, 1
Has been originally.

Reference numeral 18 denotes a shield power supply terminal connected to the Zorianoff power supply. This terminal 18 is connected to the anodes of diodes 20 and 21 via a resistor 19, and the cathode of the diode 2o is connected to the OR gate 12. The output terminal, the cathode of the diode 21, is the NAND gate 13.
The outputs of... and 2' are connected to the vendors respectively. 22
(・It is a flip-frog that inverts the output every time the cook's power is turned on. A capacitor 23'fi is connected to the clock input terminal of the resistor 19 and a diode 20. : through i & ! The Q output terminal and the quad of the diode 26 are connected to the Q output terminal of the flip 70 tube 22, respectively.

The junction between the resistor "aTi" and the diodes 25 and 26 is connected to the input capacitor of a mono-stable multi-vibrator 28 via a capacitor 27, and the output terminal of the vibrator 28 is connected to a flip 70. It is connected to the clock input terminal of horn 16. Here, this flip-flop "16" is 'J'I (j self-flip
Like the clocks 22 and 10, the output is completely inverted every time the clock input decreases by ☆. Also, N'l j[:7 linog/70 horns 16 and 22 are both clear/'11) before reading one line.
A clear pulse is input from the pulse input terminal 29.

30 is the first song 1 signal a and Fritsuno 70 Tsug 22
Q1. It is a two-man power A N D gate with B power i1 gold input, and the output terminal of this gate 30 is a quick signal output)J
,&1! j is connected to aT-3,1. In this embodiment, each of the components 12 to 30 constitutes an effective surface number 1d extraction circuit.

Next, the operation of this embodiment will be explained.

The first photoelectric conversion element 6 passes through a red filter 8.
When the L beam is incident, the long beam i1 of the 11L variable element 6 is such that the light beam reflected by the frame 3 of the original 1 has four elements 1
When the light is incident on the A-conversion element f-6, the image is lower than when the nine beams reflected from the white portion of the original 1 are incident.

Therefore, when the level iJ of the urgent message Qa of condolence is read, the white part of MiJ becomes higher than when it is not read (the first urgent message a is Riyuichi:
When the conversion element 6 successfully captures the white b'I) portion of the original t'i41, it becomes O level, and even if it captures the black part (
Glass direction (/CC friend level, assumed.)
Here, in this first implementation, the first hatred ->, d
Level H, exclusive r JOR game) 11 and to ND gate 3o (Ko-Keru's printing 1st shift (・■), frame 3, or if the game is defeated and L!: i station High level (hereafter r1
It is assumed that the VC is set so that it becomes a low level (hereinafter abbreviated as "L'") when the white part of the original figurine 1 is read.

A red filter 7 is passed through the second photoelectric conversion element 8.
Since the localized light beam is incident, only the red light beam is incident on the turning element 8. i')・, frame 3
The level of the second stroke 1 = - when the first image is read is the same as the level of the peripheral surface signal when the white part of the original 1 is read.

Here, in this embodiment, the second picture f, the level jr-, L1 of the 4-bow b, the exclusive knob Non (gate 11L, Nibi AND game), the ), as L prefecture, when the white part and frame 3 of JH'J-Kai 1 are taken, the level is 0, that is, °°L
On the other hand, when the outside of the black part of original + t,, i 1 takes the reader t'', set it so that it becomes °゛H゛゛.'')
Make it a spider.

Next, we will explain the operation when the line n shown at 81 in FIG.
I'll do it.

Even if the 7-linoff frogs 16 and 22 are set, before starting reading this line, a clear pulse q VCj is inputted through all clear pulse input terminals 29, and the above-mentioned fritsuno'. No “J Rag 1
6 and 22 are reset and 1 remains, so that the signal f1
Since the value becomes °°L', the AND gate 30 is closed.

Next, when reading of this line starts, frame 3. In section 1ijj A on the left side, when the first image signal d is "H", the second image signal is "H", and when the first image signal a is °°L° is the second image signal SUMO14
Since it is L IJ, the 11) force C of the exclusive knob NOR gate 11 is "H".

However, the scanning progresses and the ward r! jj A; 6' end γ;
Frame 3. When the left side 3a is read, the first stroke 1,1
Zua IJ.

“°・I°” is the second picture I1)” L
7t Le U), the exclusive force (C of OR gate 11, 11j becomes Lo. Then, the
Of (the output d of gate 12 is also '°h°')
Since it becomes "Lo", the diode 2o works well, and the clock input terminal of the Fuinote 70nog 22 receives a pulse e in the direction.
When input, the Furinozoro Sop 22 is set,
The signals f1 . f2 is inverted, the signal f1 is "H", and the signal f2Pi is "L". L 7c;'+;
+, A +4 D gate 30 or 1, which was 1 until then. For the first time, the first image signal a passes through the gate 30 and is output to the image signal output terminal 31, where it is output by +7.

Also, as described in ;.1j, the signal f1. At the moment when f2 is reversed, the diodes 25 and 26 are both 2!4+i, mono.
A pulse q in the negative direction is input to the stable number multi-vibrator 28, and the output to the multi-vibrator 28 becomes ``H°'' for a predetermined period of time, and then becomes ``L'' again. On the F side, the flip clock 16 is set n, 1.: No. k is pa・If the width is narrower than the width corresponding to the time when the output of the vibrator 28 becomes "H", then while the output becomes t' lc "H'" ((the reading of the left side 3d of the second station 3 is Finished, section B (required part 2
section) and exit gate 11.
The output C becomes Pj and °H°', and
Goo!・Output d of 12 also becomes °°H''. Next, the scanning progresses further, section 8 ends, and the right side 3b of frame 3 starts to be read and output again.
1's output C becomes °L°''. However, in this case, since the signal k is already ``H'''', the output of the upper gate 12 is Maintain the state of 1°゛H゛'.

Next, reading of the right side 3b of frame 3 is completed, and the output of the ward C
becomes °H°'. Then, the output m of the inverter 17 is 1I
It is delayed by the delay circuit (f7i:'1 14 and capacitor 15) and is inverted at 1;
)1”.At this time, NAl
5 All three inputs r of ID gate 13 are IT HIT
The output of the gate 13 becomes n31°°L.

Then, the diode 21 is turned on, and a second pulse e is input to the clock input terminal C of the flip-flop 22.
Same reset 22 (d reset fLl (rj number f1.f
2 is inverted again, the signal f1 is "L", and the signal fi is H
Therefore, the A rJD gate 30 is closed again, and the 10th image signal '+'Fd is connected to the image signal output terminal 3.
Output to 1 is no longer possible.

Moreover, as mentioned above, the signal f1. At the moment f2 counterattacks, pulse q is input to mono stay □ pull multi-vibrator 2B, and 1J-1 force n of the same vibrator 28
becomes ’°H°” for a predetermined time, and then becomes ’°L°” again.
&(.Then, the flip 70 sozo 16 L is reset and the ns signal 1'i k becomes "L", and the device returns to the initial +V+ state. Therefore, in the case of Fig. 1, &-,
i/f: Well, if there are 12 more frames 3 in manuscript 1, the 1-lm ・s 1 乹 will be repeated for 11 more times.

Note that the output n of the NAND gate 13, which has been VC'd to -[j "L" as described above, is then input to the inverter 12.
) Jm becomes °゛L°”, “t” again.
(” becomes.

Next, regarding the case where the line 1 shown at 82 in FIG.
Let me explain.

In this case as well, in the same way as in the case of S1, the section t+iJ
At the end of A, the AND gate 30 (d closes and l
', and the first stroke a is the stroke '(j' ``i-
There is no output from output terminal 31C. Then, when the section ends and the second side 3C of the frame 3 starts to be read, the output C of the exnocle =/B 110 R gate 11 becomes "L", and the AND gate 30 is The image signal d of the image i1j1 is outputted to the output terminal -31 and controlled by the image I1j1. At the same time, the pulse q is input to the mono-stable multiplier 28.
8 (') if! The tension is the above t9 [on time! ii4”
)(" (Now, the barley becomes I'j°"L°". Then, with h (1) ","1: Chitokari, flip frotsuno 16 sets: n , +1i>
ji “k, shi.

It becomes "PaH°".

However, as mentioned above, this Kamoai (cGi No.
” V (7. U, before the l1 point, the output C of the EXCLUSIVE NOR gate 11 becomes °°H°', -i: never, 7'), the OR gate 1; II' output d
if, above 47), J: ') tc 1. Only when the i number k becomes pa a°'' does it become pa H°''.

Next, when the reading of the upper side 3c of the frame 3 is completed and it enters the section C, the output ()Jc of the exclusive NOR gate 11 becomes "f(". At this time, the output m of the inverter 17 also Since the level is "H", all three inputs of l'JAi-D gate 13 become "H", and the output n of the same gate 13 becomes "°L".

Then, the diode 21 becomes conductive, and the pulse e: is input again to the clock input terminal of the flip-flop 22.
The Furinoff 22 is reset, g, ft signal fl, and f2 are inverted, the signal 11 becomes "L", the signal 12 becomes "H", and the AN
D game) 30 is closed again, and the first image signal a is no longer output to the image signal output terminal 31.

Moreover, as mentioned above, the signal f4. At the moment when f2 is reversed, pulse q is input to the mono staple multi-vibrator 28, and the output of the same vibrator 28 becomes +=:
It becomes ``H'' for a predetermined time, and then becomes ``L'' again. The flip-flop 16 is then reset and the signal k
becomes L”, and the device returns to its initial state.

In addition, even if the lower side 3d of the frame 3 is captured, the same operation as when the upper side 3C of the frame 3 is read is carried out. Only the image signal is output to the image signal output terminal 31.

, and above the frame 3 as indicated by 83 in FIG.

If the line on the F side of side 3C or the line below F side 3d is read, 1. l: As is clear from the above explanation, the image signal output terminal 31 has the following signals:
In this embodiment, an interval detection circuit consisting of an EXCLUSIVE NOR gate 11 is used, in each line, in an interval in which the 10th image signal a is 1H and the second image signal is 1L.
・-1 frame 3 (・Zfll corresponds to the frame section:, :j), and effective image signal extraction i"l II-+'t consisting of the M rfp products 12 to 30 is detected. Between the sections and the specified 1-....Kosa no 忰 section of the 1st side of line a, the number of sections between the Shonnu Vinegar [] frame section and the next 4A-th section. Only the signal in the interval between ft is extracted and output to the image signal output terminal 31.

Therefore, the image signal output terminal 31 receives the frame 3 and the first image signal a that has read the necessary portion 2 surrounded by this 3.
Only n is obtained, and image signal d is obtained by reading other parts of Haraji 1.
has been declared invalid.

For example, when this device is used as a reading device for all facsimile devices, by transmitting the image signal a obtained at the image data output terminal 31 to the receiving side, the necessary portion 2 and the frame 3 can be read. The transmission time can be shortened by transmitting only the data to the receiving side, and the part outside the frame 3 can be hidden from the other party.

Note that, contrary to the case of the above embodiment, the levels of the 10th image signal and the second image signal become O level when the dotted part of the original is read, while the level of the 10th image signal becomes O level when the dotted part of the original is read, '! If the level is set to reach the maximum level when the image is read, the interval in which the first image signal is "L" and the second image signal is "H" may be set as the interval between the above-mentioned intervals. Needless to say.

Furthermore, in this embodiment, a red filter is used because the necessary parts of the document are surrounded by a red frame, but if the necessary parts are to be surrounded by a frame of another color, , it goes without saying that it is sufficient to use a filter according to the color.

As described above, the reading device according to the present invention utilizes a method in which if a necessary portion of a document is surrounded by a frame of a predetermined chromatic color such as red, only the portion within the frame can be read. Effect 'f: Obtained.

[Brief explanation of drawings]

FIG. 1 is a small-sized view of a document with necessary parts enclosed in a frame, and FIG. 2 is an ILj of a reading device according to an embodiment of the present invention.
The circuit configuration diagram, FIG. 3 is a timing diagram of No. 61,1 of the j4-piece reader 6 that failed to read the line indicated by SL in FIG. 2, and FIG. This is the timing 1 of the image signal of the reading device (1) when reading the /j-saf line at 82. 4... Lens, 5 fist... Half mm, 6-...
・First light (conversion element, 7...red filter, 8.
°°"Second photoelectric conversion element, 9...First image signal amplifier, 10...Second image signal amplifier, 111.
・Exclusivity N ORj'-)% 12・ ・
OR gate, 13...NAND gate, 1
4...Papa Resistor, 16...Capacitor, 1
6... 7 lip-flop, 17...'inverter, 18
...Pull-up power supply terminal, 19...Resistor, 20.21-... -Diode, 22...
Flip-flop, 23... Capacitor,
24...Resistor, 25.26...Diode, 27...Capacitor, 28...--Mono stable e multi pie break, 3o...A i
i D gate, 31... -111j G: No. j' sand exit end -1a... 1st image signal, b... 20th express signal bow. Yes! Names of 11 people: Patent attorney 1° Ohada Naka, and 1 other

Claims (1)

[Claims] A light beam arriving from the original height is divided into two undivided light beams, a filter selectively transmits light of a certain wavelength, and one of the divided light beams is passed through the filter. a first 9′ton conversion element that enters without going through;
At the second photoelectric conversion line r, into which the other of the divided luminous fluxes enters through the filter described in 1JII, and at the valley line,
The first light (output of the E conversion element f') K4J, the second image 14I obtained based on the output of the second photoelectric converter element K4J, and the output of the second photoelectric converter element 11iJA The level of one of the image signals becomes equal to or higher than a predetermined threshold: b,
A frame section detecting circuit detects as a frame section an section where the other level is lL (lower than a predetermined threshold value); an effective image signal extraction circuit for extracting only signals in one river section of the frame section of the ceremony number and the following 1m-th number of sections counting excluding the frame section having a length of A reading device comprising: