JPH059196Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a typewriter with a display function that can numerically display the number of data such as character data that can be stored.

(Prior Art) In a typical typewriter, when repeating a space or a backspace, it is required that the space repeat operation by the print head be performed smoothly, quickly, and with low noise.

(Problem that the invention attempts to solve) However, in a typewriter that is designed to be able to store character data, space data, etc., and also to display the number of data that can be stored, one space operation is performed and the data is stored. Each time the number of possible data decreases, it is necessary to rewrite the remaining number display, but the calculation process for rewriting the display takes time. Therefore,
If a space operation is performed at the same time as the display is rewritten, the print head will stop after each space, and the space operation will become intermittent.
Not only does the spacing operation take time, but each time the print head stops, a stop sound is generated and vibrations are added, making it impossible to perform space repeats smoothly, quickly, and with low noise. This defect can be solved by using a slow-response liquid crystal display device as a display means,
This problem becomes more noticeable when the calculation process becomes complicated due to factors such as a large data storage capacity.

Furthermore, even if the display could be rewritten quickly and smooth space repeats could be achieved, it would be nearly impossible to recognize the rapidly changing numerical display.

(Purpose of the invention) This invention was made in view of the above circumstances, and its purpose is to skip the display when the display rewriting is delayed compared to the repeat operation, and to perform the space repeat. To provide a typewriter with a display function that can perform operations smoothly, quickly, and with low noise, and that can easily recognize the numerical display of the number of data that can be stored.

(Means for solving the problem) In order to achieve the above object, this invention provides a keyboard equipped with various keys such as character keys and space keys, and a keyboard that is provided with various keys such as character keys and space keys, a storage means for storing information, a printing mechanism that performs a printing operation, a space operation, etc. based on the print information in the storage means, and a display means for numerically displaying the number of data that can be stored in the storage means; a first control means for controlling the display operation of the display means; and when repeating the space operation, if the display of the number of storable data is delayed compared to the repeat operation, the display is skipped and displayed. and second control means for controlling.

(Function) Therefore, each time a character key, space key, etc. is displayed on the display means. Further, when space repeat is being performed, the second control means compares the timing of the repeat operation and the display rewriting, and if the display rewriting is delayed, the numerical value is skipped.

(Example) Hereinafter, an example that embodies this invention will be described based on the drawings.

As shown in FIG. 2, a platen 3 for supporting printing paper 2 and for carrying out a paper feeding operation is rotatably supported at the rear of the frame 1 of the typewriter in this embodiment. At the front of the platen 3, there is a type wheel 6 having a large number of type characters on its outer periphery and selectively rotated by a type selection motor 5, and a printing hammer (not shown) for hitting the type on the type wheel 6. Print head 7
A carriage (not shown) on which the platen 3 is mounted is provided so as to be movable along the longitudinal direction of the platen 3. This carriage has a carriage drive motor 8.
(as shown in FIG. 1) to the left and right.

A well-known printing mechanism is constituted by the platen 3, printing head 7, carriage drive motor 8, etc. After the printing head 7 is moved to a predetermined printing position, rotation of the printing wheel 6 allows the printing to be performed as desired. The printed characters are selected and arranged opposite to the platen 3, and the printed characters are struck by the printing hammer toward the printing paper on the platen 3 via a printing ribbon (not shown), thereby printing an arbitrary character. It's becoming like that.

A keyboard 11 is provided at the front of the upper surface of the frame 1.
Various keys for operating this typewriter are arranged there, and in the upper center there is a display consisting of a liquid crystal as a display means capable of displaying characters with fewer digits than one printing line. vessel 12
is provided.

As shown in FIG. 3, the keys include an alphabet key 13 for inputting each letter of the alphabet, a numeric key 14 for inputting numbers, a symbol key 15 for inputting symbols, and a print head 7.
a return key 16 for returning and paper feeding, a margin set key 17 for setting the margin position, a margin release key 18 for releasing the margin set,
Tab set key 1 for setting tab position
9. Tab clear key 2 for clearing tabs
0. Code key 21 that is operated in conjunction with other keys to set or delete some modes, Tab key 22 for tab operation, Set repeat mode to repeat the operation corresponding to the most recently operated key. Repeat key 23 for space operations, Space key 24 for space operations, Backspace key 2 for backspace operations
5. It is composed of keys similar to those of a normal typewriter, such as a collection key 26 for operating the collection.

In addition, in the typewriter of this embodiment, character keys 13 such as alphanumeric keys, numeric keys 14,
Continuously press down the symbol key 15, space key 24 and backspace key 25 (about 0.5 seconds)
Then, it has a self-repeat function in which the operation corresponding to that key continues as long as it is pressed. The self-repeat function is the same as that of Japanese Patent Application No. 60-259306 filed by the present applicant, so the details thereof will be omitted.

The left end of the keyboard 11 has an auto mode in which key-input data is automatically changed lines within a predetermined zone near a predetermined right margin position by operating the space key or hyphen on key, and a character mode. , a ``Stay Eye'' mode that arranges input characters, symbols, etc. evenly between both left and right margins regardless of the number of symbols, and a ``Stay Eye'' mode that arranges input characters, symbols, etc. evenly between the left and right margins, and a mode that prints and data according to the set format when neither of the above modes is set. An operation mode selection key 33 is provided for selectively setting three types of modes including a normal mode for performing transfer. In front of the operation mode selection key 33 are a type mode in which the typewriter is used as a normal typewriter, a store mode in which key-input data is stored in a text memory 45, which will be described later, and a mode in which the data entered by the keys is stored in a text memory 45, which will be described later. A function mode selection key 27 is provided for selectively setting three types of modes including a print mode in which data is printed or displayed on the display 12 based on the data. Both mode selection keys 33, 27
Display texts corresponding to each mode are provided on the top, and lamps 28 corresponding to display texts other than the normal mode display text and the type mode display text are provided adjacent to both mode selection keys 33 and 27. It is provided. Further, the function mode selection key 27
A line spacing selection key 29 for selecting and setting four types of line spacing is provided in front of the line spacing.
Display sentences corresponding to each line interval are provided on 9. Further, a character spacing selection key 30 is provided for selecting and setting three types of character spacing, and a display sentence corresponding to each character spacing is provided on the selection key 30. Both spacing selection keys 29, 30
A lamp 31 corresponding to each display sentence is provided on the right side of the screen.

Next, the control circuit of the typewriter of this embodiment will be explained based on FIG.

A main CPU (main central processing unit) 35 serving as a second control means includes various register sections, and the keyboard 11 is connected to the main CPU 35, and a type wheel drive circuit 36 and a carriage drive circuit 37 are respectively connected to the main CPU 35. A character selection motor 5 and a carriage drive motor 8 of the printing mechanism are connected through the motor. Note that the solenoid of the printing hammer and the like are not shown.

Further, a ROM (read only memory) 38 and a RAM (random access memory) 39 are connected to the main CPU 35, respectively. Said
The ROM 38 includes a program memory 40 in which programs such as those shown in the flowchart of FIG. A pattern memory 41 or the like is provided in which pattern data corresponding to possible characters, numbers, symbols, etc. are stored.

On the other hand, the RAM 39 serving as a storage means stores left and right margins, tabs, character spacing, line spacing, etc. input by operating the margin set key 17, tab set key 19, character spacing selection key 30, line spacing selection key 29, etc. an input buffer memory 42 for temporarily storing format data and character data input by operating the alphanumeric keys 13, numeric keys 14, etc., and characters, numbers, symbols, etc. to be displayed on the display 12; a display buffer memory 43 for temporarily storing data of characters, numbers, and characters to be printed by the printing mechanisms 5, 8, etc.;
A recording buffer memory 44 that temporarily stores data corresponding to symbols, etc., and a text memory 45 that stores a considerable amount of character data such as letters, numbers, symbols, and format data inputted in the store mode. In addition to memory, counters and registers necessary for program execution are provided.

Further, a display CPU (central processing unit for display) 46 as a first control means is connected to the main CPU 35, and the display CPU 46 serves as a first control means.
The display 12 is connected to the CPU 46 via a display drive circuit 47, and a character generator 48 is also connected thereto. This character generator 48 generates a pattern of a character or the like when a code of a character or the like to be displayed is generated based on the pattern data in the pattern memory 41.

When the type mode is selected based on the operation of the function mode selection key 27, the main
The CPU 35 searches the input buffer memory 42 for the number of data that can be stored, and the display CPU 4
6 and the display drive circuit 47, the number of characters up to the right margin position is displayed on the display 12. or,
During space repeat (including back space repeat), the main CPU 35 is the display CPU.
When a busy signal is returned from the display CPU 46 indicating that arithmetic processing is in progress, the display is canceled, and the data bus is turned on only when the busy signal is not returned. Displays numerical pattern data for character count display via CPU
Send to 46. When the function mode selection key 27 is pressed down once in the type mode setting state, the main CPU 35 sets the print mode, and the text memory 45 of the RAM 39
Displays the amount of remaining memory in bytes. Furthermore, when the function mode selection key 27 is pressed down once while the print mode is set, the main CPU 35 sets the store mode, and the display 1
2 displays the remaining number of memory entries that can be input in the same way as in the print mode. In addition, the main
The CPU 35 uses the storage function of the RAM 39 to send signals input from the keyboard 11 to the ROM 38.
The process is performed according to a predetermined program and pattern data, and the drive circuits 36, 37, etc. are controlled to print characters, symbols, etc. on the printing paper 2. The detailed program for this printing is based on the present invention. Detailed explanation will be omitted as it is not essential for understanding.

Next, the operation of the type titer in the type mode configured as above will be explained based on the flowchart of FIG. 4.

Now, the main CPU 35 operates at step S1 (hereinafter referred to as
It is simply represented by S1. (Same for other steps)
It is determined whether a key input has been made in S2, and if NO, it is determined in S2 whether or not the current repeat mode is entered.
There is a key input in the scan from 1 to S2. When a key is input, the process advances from S1 to S3. In this case, if the operated key is the repeat key 23, the determination result in S3 is
YES, and after the repeat mode is set in S4, the process returns to S1.

Then, in S1, the determination result becomes ON, and the process moves to S2. In this case, since the repeat mode is set, the determination result in S2 becomes YES, and the CPU retrieves data from the last data buffer of the input buffer memory 42 in S5, and determines that the data is data that allows repeat operation in S6. It is determined whether or not, and if NO, the process returns to S1. In addition, if the data taken out from the last data buffer is repeatable data such as characters or spaces, it is determined in S7 and S8 whether it is space data or backspace data, and the space data is Alternatively, if the data is other than backspace data, for example, if it is character data, the printing mechanism is caused to perform a printing operation using the character data and the carriage is moved by one character in step S9. Further, if the data of the last data buffer is space data, the determination result in S7 becomes YES, and S10
Then, it is determined again whether or not it is the repeat mode. In this case, since the repeat mode has already been set, the process advances to S11. In this S11, the main CPU 35 is the display CPU 46
It is determined whether the display can be rewritten or not based on whether a busy signal is returned in response to the strobe signal.

In other words, if the display CPU 46 does not return a busy signal, the display CPU 4
Since the arithmetic processing in S1 is performed smoothly and the remaining number display can be rewritten, the main CPU 35 is
Display CPU via data bus at 2
The pattern data of the numbers to be rewritten is sent to the cover unit 12 via the display drive circuit 47.
After the remaining number display above is rewritten, a space operation for one character is performed in S13, and the process proceeds to Step S1.
to return to. Then, the determination process through S1 to S13 is performed again, and space repeat is performed.
Furthermore, if the arithmetic processing in the display CPU 46 is delayed, a busy signal is sent back from the display CPU 46 to the main CPU 35, so the main CPU 35 can skip S12 without rewriting the remaining number display. The process moves to S13.

Furthermore, if the data in the last data buffer is backspace data, the process moves to S8 via S7, the determination result in S8 becomes YES, and S1
4 to S17, the same determination process as in S10 to S13 is performed, and if the rewriting of the remaining number display is delayed compared to the repeat operation, the rewriting is skipped.

Next, if the repeat key 23 is pressed down again during the repeat mode set, the processing of the main CPU 35 proceeds from S1 to S3 in order to cancel the repeat operation, the determination result in S3 becomes ON, and the determination is made in the next S18. The result is YES, and the repeat mode is canceled in S19.
In S20, it is determined whether the data in the last data buffer is space data or backspace data. If the determination result in S20 is YES, then S1 is passed through S7 or S8.
0 or S14, but since the repeat mode has already been canceled, the determination result here is NO, and after the remaining number display is rewritten in S12 and S16, one character is displayed in S13 and S17. A minute space or backspace is performed. In this way, the final remaining number display is rewritten without being skipped. Therefore, the user can accurately know the remaining number of memories that can be stored at the end of the space repeat.

If a key other than the repeat key is operated during the scan from S1 to S2, the determination results in S3 and S18 will be ON, and in S21 the data corresponding to the operated key will be the last one in the input buffer memory. After being stored in the data buffer, it passes through S7 and S8 and then S9
Processing corresponding to the data is performed in .

In the above explanation, the case where the repeat mode was set by the repeat key 23 was explained, but the same applies when the repeat mode is set by continuing to press the space key 24 or the back space key 25 (self-repeat function). If the data display is delayed compared to the repeat operation, the display is skipped.

Further, in the above embodiment, when the repeat key is pressed, the repeat mode is set, and when the repeat key is pressed again, the repeat mode is canceled, but the repeat key continues to be pressed. The repeat mode may be set only during this period.

Further, in the above embodiment, the description has been made regarding the setting of the type mode, but it goes without saying that the process can also be carried out when setting the other print mode or store mode.

Effects of the invention As exemplified in the embodiments above, this invention is configured so that when the space operation is repeated, if the display of the number of memorable data is delayed compared to the repeat operation, the value is skipped and displayed. , the space repeat operation can be performed smoothly and quickly with low noise without being performed intermittently, and
The excellent effect of preventing the numerical display from being rapidly rewritten and reliably recognizing the rewritten numerical display is achieved.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the electrical configuration of a typewriter embodying this idea, Figure 2 is a perspective view of the entire typewriter, Figure 3 is a plan view of the keyboard, and Figure 4 is a space repeater. This is a flowchart showing the program. 5... Character selection motor, 8... Carriage drive motor, 12... Display, 13... Alphabetical key, 14... Number key, 15... Symbol key, 24... Space key, 25... Back Space key, 35... Main CPU, 39...
RAM, 46...Display CPU.

Claims (1)

[Claims for utility model registration] Character keys 13 to 15, space keys 24 and 25
A keyboard 11 equipped with various keys such as, a storage means 39 for storing print information input by operating the keys, and a print operation and a space operation based on the print information in the storage means 39. printing mechanisms 5, 8, etc., display means 12 for numerically displaying the number of data that can be stored in the storage means 39, first control means 46 for controlling the display operation of the display means 12, and the space. The present invention is characterized by comprising second control means 35 for controlling the display to skip the display when the display of the number of storable data is delayed compared to the repeat operation when the operation is repeated. Typewriter with display function.