KR940005148B1 - Typing method in typewriter - Google Patents

Abstract

The wheel-changing type memory typewriter includes memory devices to store the data of letters inputed and an appropriate wheel, and driving means for typping according to the data in the memory devices and the typping direction. The typping procedure of the typewriter is as follows; initializing the carriage and the wheel by the lettering key inputed; discerning the lettering status by taking the data pointer (100) out of the typping data memory device; taking the data of the place which the typping wheel data pointer (60) is pointing out of the typping wheel memory device; discerning the conformance of the data with the wheel-changing switch (20); moving the data pointers (60)(100) to the next typping position; designating the typping direction flag by checking the position of the typping data pointer.

Description

Printing method of wheel interchangeable memory typewriter

1 is a block diagram of the present invention.

2 is a flow chart of the present invention.

The present invention relates to a printing method in a wheel interchangeable memory typewriter, and in particular, when wheels such as Korean and English type print documents with memory contents and reading printers in different typewriters, selectively depending on the type of wheels or letters printed. A printing method of a wheel interchangeable memory typewriter that can be processed.

In the prior art, in the memory typewriter used by exchanging wheels, printing may not be performed selectively depending on the type of wheel and characters (Korean or English) printed when printing the document. In the typewriter, there was a problem that should be handled only with Hangul wheel.

Accordingly, the present invention is to selectively process according to the type of wheel or letters printed when printing the document to the memory content and the reading printer in a different typewriter to the wheel of Korean, English, etc. in order to solve the drawbacks of the prior art as described above. It is an object of the present invention to provide a printing method of a wheel interchangeable memory typewriter.

The present invention having such an object will be described in detail with reference to the accompanying drawings.

The present invention provides a wheel interchangeable memory typewriter having means for storing contents of input characters and storing wheels of printed characters, and a plurality of driving means for performing printing according to the contents and printing directions of the storage means. A printing method comprising the steps of: initializing a carriage and a wheel according to an input printing execution key; and extracting the printing data pointer 100 from the printing data storage means to determine whether it is a letter; Extracting the data indicated by 60 from the print wheel storage means and determining whether the extracted data matches the wheel change switch 20; moving the data pointers 60 and 100 to the next print position, and then The above object of the present invention can be realized by checking the position of the printing data pointer 100 and setting the printing direction flag 50. All.

In addition, if the data fetched from the print data storage means is not a letter, determining whether the fetch data is spatial data or carriage return data, and using the determination, moving the carriage drive means. If the data extracted from the print data storage means is the spatial data, the carriage driving means moves by a pitch to print. If the data extracted from the print data storage means is the carriage return data, the flag corresponds to the direction of the print direction flag 50. And driving the carriage driving means to move the carriage driving means to the home position.

The method may further include moving the carriage driving means by a pitch to print the data drawn from the print wheel data storing means and the wheel change switch 20 do not coincide with each other. In the setting step, the reverse direction is set in the forward direction and the forward direction is set in the reverse direction, and a central processing unit 10 for controlling the entire system of the above-described configuration is inherent.

When printing with two wheels, the English wheel and the Hangul wheel according to the present invention, after the printing of the English wheel is performed in order from the top line to the bottom line for each English letter in the contents of the memory, If you input printing key by replacing with Hangul wheel in, the printing is done in the order of bottom line to top line only for each Hangul after wheel and carriage are initialized.

The invention is described in more detail in accordance with the flowchart of FIG. If it is not input by checking whether the printing execution key is input from the key input unit 110, if the input is not performed, the processing for other input keys is performed, and if inputting is performed, after initializing the carriage and wheel for printing, the printing data pointer 100 ) Withdraws the data from the print data storage unit 30 and checks whether the extracted data is a character, and if it is a letter, the data of the place indicated by the print wheel data pointer 60 is withdrawn from the print wheel storage unit 40 and the wheel. When the exchange switch 20 is checked and the same wheel is compared with the data drawn out from the print wheel storage unit 40, the drive factor is performed by the carriage driver 70 and the print wheel driver 80. Next, the print data pointer 100 and the print wheel data pointer 60 are moved to the next position to print, and prints whether the print data pointer 100 is the last position of the first line or the last line of the print storage unit 30. In the case of the forward direction, the direction flag 50 is checked to set it in the reverse direction. If not, the method is repeated again.

Then, the wheel change switch 20 is compared with the data drawn out from the print wheel storage unit, and if the wheels are different, only the pitch for printing the carriage driving unit 70 is moved. If it is determined whether the data fetched from the print data storage unit 30 is a space SP data or a carriage return (CR) data, only the carriage driver 70 is driven if the data is space SP data. If it is data, check the printing direction flag, and if it is reverse, drive the platen drive unit 90 in the reverse direction to line up. If it is forward, feed the line to move the drive carriage to the home position and repeat the printing operation for the desired data. Done.

As described above, according to the present invention, when printing a document with a typewriter and a read printer such as a memory typewriter and a Korean / English combination used for replacing a wheel, the present invention selectively selects the type of wheel and letters (Korean or English, etc.) printed. By printing, the parts that were possible in the conventional Korean / English hybrid typewriter can be completely processed, and the contents can be printed according to various wheel types, thereby providing a simpler and cheaper typewriter.

Claims (5)

A printing method of a wheel interchangeable memory typewriter having means for storing contents of input characters and storing wheels of printed characters, and a plurality of driving means for printing in accordance with the contents and printing direction of the storage means. A method comprising: initializing a carriage and a wheel according to an input printing method; Drawing out the print data pointer 100 from the print data storage means and determining whether or not it is a letter; Extracting data of a place indicated by the print wheel data pointer (60) from the print wheel storage means, and determining whether the extracted data matches the wheel change switch (20); And moving the data pointer (60, 100) to the next printing position and checking the position of the printing data pointer (100) to set a printing direction flag (50). The method of claim 1, further comprising: determining whether the retrieved data is spatial data or carriage return data when the data extracted from the print data storage means is not a letter, and moving the carriage driving means according to the determination. A printing method of a wheel interchangeable memory typewriter, characterized in that. 3. The printing method according to claim 2, wherein if the data drawn out from said print data storage means is spatial data, it moves by a pitch to print the carriage driving means, and if the data drawn out from said print data storage means is carriage return data, said print direction flag (50). And driving the platen driving means in correspondence with the direction of c), and then moving the carriage driving means to the home position. The method of claim 1, further comprising: moving the carriage drive means by a pitch to print the data drawn out from the print wheel data storing means and the wheel change switch 20 do not coincide. The printing method of the wheel interchangeable memory typewriter. The method of claim 1, wherein the setting of the recognition direction flag comprises setting the reverse direction in the forward direction and the forward direction in the reverse direction.

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