CN2454822Y

CN2454822Y - OMR40C serial-interface cursor reader

Info

Publication number: CN2454822Y
Application number: CN 00256523
Authority: CN
Inventors: 刘颖兴; 范元记
Original assignee: CHANGCHENG INFORMATION INDUSTRY Co Ltd HEBEI
Current assignee: CHANGCHENG INFORMATION INDUSTRY Co Ltd HEBEI
Priority date: 2000-11-30
Filing date: 2000-11-30
Publication date: 2001-10-17
Anticipated expiration: 2010-11-30

Abstract

The utility model relates to a serial port type intelligent cursor reading machine which is mainly composed of a machine shell, an integrated circuit U11, an integrated circuit U12, five identical integrated circuit U1 to U5 and a 20 leg socket. The utility model is characterized in that the 8 legs, the 9 legs, the 10 legs, the 11 legs, the 19 legs, the 20 legs, the 21 legs and the 22 legs of the U1, the U2, the U3, the U4, the U5 are connected with each other in a one-to-one corresponding method; the 20 leg of the U11 is connected with the 12 leg of the U1; the 21 leg of the U11 is connected with the 12 leg of the U2; the 22 leg of the U11 is connected with the 12 leg of the U3; the 22 leg of the U12 is connected with the 12 leg of the U4; the 21 of the U12 is connected with the 12 leg of the U5. The utility model has the advantages of more wide range of use, more convenient operation, more reliable conversion, more fast speed of information input, better accuracy, higher cost performance and more convenient maintenance and causes users to enhance efficiency by using the improvements of an industrial control computer main control, a serial port communication and a line structure.

Description

OMR40C serial ports optical character reader (OCR)

The utility model relates to a kind of serial ports type intelligence optical character reader (OCR), the circuit that specifically relates in a kind of intelligent optical character reader (OCR) of autogamy microprocessor the data of photoelectric sensor to be done the AD conversion improves, and have the Intelligent treatment data function, belong to the significant improvement of intelligent circuit in the computer entry device.

Optical character reader (OCR) (abbreviation OMR) is to come out nineteen sixties in Britain, and the eighties is introduced a kind of quick recording device of China.OMR is applied in the standardization examination, and claim reading machine in school instruction, to use OMR again and read volume and teaching evaluation, be the effectively means of improving the quality of teaching, be the necessary modernizing teaching instrument of middle school, university.

At present, optical character reader (OCR) also is widely used in various fields such as registration management, residence management, census, poll, cadre's test and appraisal, votes by ballot except that being used widely in go over examination papers scoring and teaching evaluation field.Yet, in the existing optical character reader (OCR), also have and use inconvenient, high-end computer not have that expansion slot can not be used and problem such as intelligent difference, cause the needs that can not satisfy the user, therefore existing optical character reader (OCR) its totally await improving.

Of the present utility modelly just be to design a kind of intelligent height and easy to operate optical character reader (OCR) with all users of better adaptation.

The purpose of this utility model be realize like this it mainly by casing, integrated circuit U11, U12, five identical integrated circuit U1---U and 20 leg sockets are formed, and it is characterized in that: 1,2,3,4,5,6,7,8,9,10,11,13,14 legs of U11 link to each other with 1,2,3,4,5,6,7,8,9,10,11,13,14 legs of U12 respectively; 8,9,10,11,19,20,21,22 legs of U1, U2, U3, U4, U5 are corresponding one by one to link to each other; U1, U2, U3, U4,

U5

1,2,3,4,5,7,16,27,28 legs separately all connect together; 14,15,18,23,24,25 legs of U1, U2, U3, U4, U5 link to each other with GND jointly; 6 legs of U1 link to each other with 12 legs of CN2; 6 legs of U2 link to each other with 13,14 legs of CN2; 6 legs of U3 link to each other with 15,16 legs of CN2; 6 legs of U4 link to each other with 17,18 legs of CN2; 6 legs of U5 link to each other with 19,20 legs of CN2; U1, U2, U3, U4, U5 suspend; U1, U2, U3, U4, U5 26 legs separately link to each other; U1, U2, U3, U4, U5 17 legs separately link to each other with 19 legs of U1; Link to each other with VCC after the 24 leg parallel connections of U11, U12; Link to each other with VSS after the 12 leg parallel connections of U11, U12; 20 legs of U11 link to each other with 12 legs of U1; 21 legs of U11 link to each other with 12 legs of U2; 22 legs of U11 link to each other with 12 legs of U3; 22 legs of U12 link to each other with 12 legs of U4; 21 legs of U12 link to each other with 12 legs of U5.

The utility model is compared with prior art: it is by using the improvement of industrial computer master control, serial port communication and line construction, make that the utility model usable range is wider, more convenient operation, change more reliable, the information input speed is faster, and is more accurate, and cost performance is higher, keep in repair more conveniently, the user is raised the efficiency greatly.

The utility model is described in further detail below in conjunction with accompanying drawing and example.

Fig. 1 is the utility model circuit theory diagrams.

Fig. 2 is a local amplifying circuit schematic diagram among Fig. 1.

Fig. 3 is the utility model casing schematic appearance.

The utility model Great Wall series optical character reader (OCR) (OMR) is its quick identification content of scribbling on the ID card fast more of computer entry device of a kind of special use, changes Computer Processing over to by serial port.Its ultimate principle is the information bit that illumination that luminescent device sends is mapped to release, as this information bit by blacking then part light be absorbed, reflected light dies down, otherwise reflective light intensity because the corresponding receiving tube light that power is different converts electric signal to, is changed through A/D again, after carrying out digital filtering, format identification by industrial computer, further be treated to desired character, then import subscriber computer into and be prior art later on, repeat no more here by the computing machine communication.Improvement part of the present utility model comprises: 1,2,3,4,5,6,7,8,9,10,11,13,14 legs of U11 link to each other with 1,2,3,4,5,6,7,8,9,10,11,13,14 legs of U12 respectively; 8,9,10,11,19,20,21,22 legs of U1, U2, U3, U4, U5 are corresponding one by one to link to each other; U1, U2, U3, U4,

U5

Wherein: integrated circuit U11, U12 select PAL20V8B for use

Five identical, and integrated circuit U1---U5 selects MAX118 for use

20 leg sockets are selected the pin type socket for use

Claims

A kind of OMR40C serial ports optical character reader (OCR), it is mainly by casing, integrated circuit U11, U12, five identical integrated circuit U1---U and 25 leg sockets are formed, and it is characterized in that: 1,2,3,4,5,6,7,8,9,10,11,13,14 legs of U11 link to each other with 1,2,3,4,5,6,7,8,9,10,11,13,14 legs of U12 respectively; 8,9,10,11,19,20,21,22 legs of U1, U2, U3, U4, U5 are corresponding one by one to link to each other; U1, U2, U3, U4, U5 1,2,3,4,5,7,16,27,28 legs separately all connect together; 14,15,18,23,24,25 legs of U1, U2, U3, U4, U5 link to each other with GND jointly; 6 legs of U1 link to each other with 12 legs of CN2; 6 legs of U2 link to each other with 13,14 legs of CN2; 6 legs of U3 link to each other with 15,16 legs of CN2; 6 legs of U4 link to each other with 17,18 legs of CN2; 6 legs of U5 link to each other with 19,20 legs of CN2; 13 legs of U1, U2, U3, U4, U5 suspend; U1, U2, U3, U4, U5 26 legs separately link to each other; U1, U2, U3, U4, U5 17 legs separately link to each other with 19 legs of U1; Link to each other with VCC after the 24 leg parallel connections of U11, U12; Link to each other with VSS after the 12 leg parallel connections of U11, U12,20 legs of U11 link to each other with 12 legs of U1; 21 legs of U11 link to each other with 12 legs of U2; 22 legs of U11 link to each other with 12 legs of U3; 22 legs of U12 link to each other with 12 legs of U4; 21 legs of U12 link to each other with 12 legs of U5.