JPS5920042A - Symbol input device - Google Patents

Abstract

PURPOSE:To perform easily a symbol input to a word processor, by converting photoelectrically light irradiating a symbol corresponding to each section of an original paper sheet with a sensor and comparing a signal of the symbol obtained with information stored in a signal processor in advance. CONSTITUTION:A photodetecting element array forming one of matrixes of photodetecting elements is arranged in matrix on a two-dimensional sensor 1 corresponding to each section of the manuscript paper 4. Further, the symbol written on the paper 4 is made incident as a shadow to the photodetecting element through the irradiation of light, and an element to which light is made incident flows a large current, and an element turned to a shadow does not flow a current, then a current coresponding to the amount of receiving light flows to the photodetecting element. Further, an element having both the shadow and the light is read as it receives light if the current is a prescribed value or over. The read signal is transmitted to a signal processor 3, where the signal is compared with bit information corresponding to many symbols stored in advance. As a result, when they are coincident, a code corresponding to the symbol is outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a symbol input device for inputting symbols such as a wide variety of characters, symbols, and numbers, such as a Japanese word processor.

Traditionally, Japanese word processors, etc., have been used to input a variety of characters (kanji, hiragana, katakana), symbols, numbers, etc. by arranging all the characters, symbols, numbers, etc. on a panel, and inputting the necessary characters, symbols, numbers, etc. Select the letters, symbols, and numbers by pressing them one after another with a touch ben etc.
Code) ff: was input to the food pro sensor, etc.

With this type of input device, the operator must memorize which characters, symbols, and numbers are arranged in which position among the huge number of characters, symbols, and numbers on the panel, which requires skill. It is. Furthermore, as the number of types of characters, symbols, and numbers increases, input devices require larger panels. Furthermore, when the letters, numbers, and symbols were made smaller, people with poor eyesight could easily manipulate them.

The present invention eliminates the above-mentioned drawbacks and provides a symbol input device that can read manuscript paper on which letters, numbers, and symbols have been written by hand and input them into a word processor or computer by simply applying the paper to a sensor.

The symbol input device of the present invention is constructed by arranging light-receiving elements in a matrix and forming a first square of a manuscript paper, and arranging the light-receiving element array in a matrix corresponding to each square of the manuscript paper, and writing in each square of the manuscript paper. A two-dimensional sensor that photoelectrically converts and outputs a current corresponding to a symbol, a sensor reader that reads the current flowing through the light receiving element of the two-dimensional sensor and outputs it as a signal for each symbol, and a memory that stores various symbols in advance. and a signal processing device that compares the symbol information stored in the storage section with the output signal from the sensor reading device and outputs a code corresponding to the symbol when they match. .

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

The symbol input device of this embodiment is constructed by arranging light-receiving elements in a matrix and forming the first square of the manuscript paper 4. The light-receiving element array is arranged in a matrix corresponding to each square of the manuscript paper. A two-dimensional sensor 1 that photoelectrically converts and outputs a current corresponding to the symbol written in each square of the manuscript paper when irradiated, and a current that flows through the light receiving element of this two-dimensional sensor 1 is read as a signal for each symbol. It has a sensor signal reading device 2 to output, and a storage section that stores various symbols in advance, and compares the symbol information stored in the storage section with the output signal from the sensor signal reading device R1, and when they match, the symbol is detected. The signal processing device 3 outputs a code corresponding to the food processor 6 to the food processor 6.

You can also type it into a computer instead of a word processor.

FIG. 2 is a perspective view of the two-dimensional sensor and document paper shown in FIG. 1.

In the two-dimensional sensor 1, a light receiving element array 8 is arranged in a matrix corresponding to each square of the original paper 4. The light receiving elements 7 are arranged in a matrix to form one of the squares 9 of the manuscript paper 4. The light receiving element 7 may be a phototransistor or a photodiode.

Although the manuscript paper 4 does not need to be transparent, it must allow some light to pass through it. That is, when irradiated from above by the light source 5, the light must pass through to the extent that the light receiving element 7 can distinguish between the shadow of the symbol omitted on the original paper 4 and the part other than the shadow.

FIG. 3 is a perspective view of the light receiving element array when light indicating a symbol is incident. The operation of this embodiment will be explained.

As shown in FIG. 3, the symbol written on the manuscript paper is irradiated with light and enters the light receiving element 7 as a shadow (indicated by diagonal lines). Among the light-receiving elements 7, the element on which light is incident causes a large current to flow, and the element in the shadow causes no current to flow, or even if it does, only a small amount of current flows. An element having a light-receiving portion and a shadow portion passes a current corresponding to the amount of light received.

The sensor signal reading device 2 reads 1" (or "0") when the light receiving element 7 is in the shadow, and reads it as O' (or 1") when the light receiving element 7 is receiving light. For elements with shadows and light-receiving parts, the current is "0" (or '1#) when it is above a predetermined value, and "1" (or "O") when it is below a predetermined value.
Read as H).

The signal of the read symbol is sent to the signal processing device f3.

(The No. H processing device 3 has a storage section, in which information corresponding to a large number of symbols is stored in advance in pit format. This stored information and the signal sent from the sensor signal reading device 2 are If they compare and match, a code f corresponding to the symbol is output.A word processor (or computer) receives this code and performs all subsequent processing.

As described in detail above, according to the present invention, it is possible to obtain a symbol input device that can be input by simply writing a symbol on a manuscript paper by hand and touching it to a sensor, thereby eliminating the need for troublesome input as in the past. The effect is strong.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a perspective view of the two-dimensional sensor and manuscript paper shown in the figure, and FIG. 3 is a perspective view of the light-receiving element array when light indicating a symbol is incident thereon. 1... Two-dimensional sensor, 2... Sensor signal reading device, 3... Signal processing device, 4...
... Manuscript paper, 5 ... Light source, 6 ... Word processor, 7 ... Light receiving element, 8 ...
... Light receiving element array, 9... Square.

Claims (1)

[Scope of Claims] A light receiving element array formed by arranging light receiving elements in a matrix to form the first square of a manuscript paper is arranged in a matrix corresponding to each square of the manuscript paper, and a symbol written in each square of the manuscript paper. a two-dimensional sensor that photoelectrically converts current in response to the current, a sensor signal reading device that reads the current flowing through the light-receiving element of the two-dimensional sensor and outputs it as a signal for each symbol, and has a storage section for storing the information, and is stored in the storage section;
The output information from the sensor signal reading device is 100%. 1. A symbol input device comprising: a symbol processing device which compares the symbols and outputs a symbol corresponding to the symbol when they match.