JPS6331396B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic typewriter having a function of counting the number of printed characters, codes, or words, and its purpose is to:
An operation of counting the number of characters, codes, or words to be printed after that based on the multiple presses of a plurality of specific keys among the many keys provided on the keyboard for instructing printing operations or functional operations. By configuring the electronic typewriter to perform the following, it is possible to provide an electronic typewriter with a simple configuration that does not require any additional circuitry. Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of an electronic typewriter according to the present invention. In the figure, a keyboard KBD is provided with a large number of character, code keys, and function keys, and the operation status of each key is All first
is searched by the electronic control circuit CM1. Among the above keys, there is a space key SP to instruct the carriage to move forward by one character, a half space key HS to instruct the carriage to move forward by 1/2 character, and a so-called upper case (upper case) key. ) and lower case (lower case, etc.), shift lock key SL to instruct hold, line feed key LF to instruct to feed a predetermined amount of paper, carriage return operation (to simultaneously feed a predetermined amount of paper). Carriage turn key CR for instructing a feed operation (feeding operation is also executed), repeat key RT for instructing a repeat of printing operation or forward movement of the carriage for one character, once moving from the printing position to another position Relocate key RL for instructing the operation to return the carriage to the original printing position stored in memory; Tab key TB for supporting the operation to move the carriage from the current position to the next preset tab position; It includes an erase instruction key CO for instructing the erase operation of printed characters and codes.

The first electronic control circuit CM1 forms a code signal corresponding to each key of the operated keyboard KBD from the contents stored in the internal storage section, and
It is output to the second electronic control circuit CM2. The second control circuit CM2 is configured to electronically control and execute printing operations of characters and codes corresponding to input code signals, as well as various functional operations according to the instructions of each function key described above. Department FCT
Outputs drive control signals to. The first and second control circuits CM1 and CM2 each consist of a so-called microcomputer consisting of a microprocessor, ROM, and RAM, and operate according to a series of various programs set in advance. Perform control actions.

To explain the counting operation of printed characters and codes with reference to Fig. 2, control circuit CM1
scans each key of the keyboard KBD sequentially in a predetermined order to search for the operation status of each key, and as a general rule, only for each individual operation of a character, code key, or function key, the corresponding code signal (Fig. (instruction using data*) and sends it to the control circuit.
Output to CM2. When forming this code signal, the control circuit CM1 of course searches for the state of the shift key or shift lock key SL in advance, and if the shift lock key SL is locked, it is stored internally as an SL set. .
When the control circuit CM1 detects the operation of the half space key HS, it forms a corresponding code signal (HS data) after confirming that there is no operation of any key other than that and the shift key or shift lock key SL, and the SL set is memorized. internal if
It is stored as an HS set, and if the SL set is not stored, it moves directly to the next scan. In addition, if it is detected that other keys other than the shift key or shift lock key SL are being operated at the same time (multiple presses), the half space key HS
ignores the operation and moves on to the next scan.

When the control circuit CM1 detects the operation of the repeat key RT, it re-outputs the code signal that was output immediately after confirming that there is no multiple press state, and if there is a multiple press state, first the SL set is set internally. It determines whether or not the SL set is stored, and if the SL set is not stored, the operation of the repeat key RT is ignored, and if the SL set is stored, it is further determined whether or not the HS set is stored internally. Even if the HS set is not stored, the operation of the repeat key RT is ignored, and if both the SL set and the HS set are stored internally, the RT set is stored. The above SL set,
The HS set and RT set are stored in the control circuit CM1 only when the corresponding keys remain locked or operated.
Therefore, in order for the RT set to be stored, the repeat key must be pressed while the shift lock key SL is locked and the half space key HS is still being operated.
It is necessary that RT be manipulated.

When the control circuit CM1 detects the operation of the tab key TB, it outputs the corresponding code signal (TB data) after confirming that there is no multiple press state, and when the multiple press state is detected, the SL set is set internally. Determine whether or not it is stored. If the SL set is not stored, ignore the operation of the tab key TB, and if the SL set is stored, next check whether the HS set is stored internally. Determine. If the HS set is not stored, the control circuit CM1 ignores the operation of the tab key TB at that time; if the HS set is stored, the control circuit CM1 ignores the operation of the tab key TB at that time.
Furthermore, it is determined whether or not the RT set is stored internally, and if the RT set is not stored,
If the operation of the tab key TB at that time is ignored and the RT set is stored, the mode becomes the first mode for measuring the number of characters and codes, which will be described in detail later. In order for the control circuit CM1 to enter this first mode, the shift lock key SL on the keyboard KBD must be locked, and the half space key HS, repeat key RT and tab key TB must be in the locked state.
are operated in sequence and remain operated.

When the control circuit CM1 detects the operation of the line feed key LF, it first determines whether or not it is in the first mode, and if it is in the first mode, it switches to the first mode. At the same time as clearing, code signals are sequentially sent to the control circuit CM2 to operate the print unit PRT and the function unit FCT to print the count values up to that point on the print paper, and then move on to the next scan and enter the first mode. If not, it is further determined whether or not there is a multiple press state, and if there is no multiple press state, the corresponding code signal (data *) is output, and if there is a multiple press state, the line feed key is output. Ignores the LF operation and moves on to the next scan.

When the control circuit CM1 enters the first mode,
The amount by which the carriage has been moved is counted in units of characters and codes according to the subsequent operations of characters, code keys, and function keys. In other words, the count value is increased by 1 each time the character, code key, and space key SP are operated, and the count value is increased by 1 for each operation of the character key TB and the carriage return key CR, taking into account the left and right margin positions. Calculate how many characters are in the blank space as a result of following these actions, and add it to the count value up to that point.
Further, when the backspace key is operated, the number of operations is subtracted from the count value, and when the relocate key RL is operated thereafter, the amount of movement at that time is calculated and added to the count value. In addition, the erase instruction key
Characters and codes erased by CO operation are subtracted from the count value, and when a new character code is printed at the erased position, it is added to the count value. Such counting operation continues until the line feed key LF is operated. It should be noted that configuring the control circuit in such a way that it simply counts characters, codes, and the minimum number of spaces between them without measuring the margins requires less programming than the above method. it is obvious.

The above explanation is the first method for measuring the number of characters and codes in the printing operation of this electronic typewriter.
Regarding the second mode, which is necessary for measuring the number of words instead of the number of characters and codes, in this electronic typewriter, first lock the shift lock key SL in the same way as described above. ,
Then half space key HS and repeat key
By pressing RT in sequence and releasing the shift lock key SL while keeping them pressed, the second mode is set, and the number of words to be printed is counted based on the contents of the subsequent key operations. That is,
The control circuit CM1 increases the count value by 1 each time the space key SP or carriage return key CR is operated following the operation of the character or code key, and when the line feed key LF is operated, the count value up to that point is displayed. will be printed automatically. Note that this electronic typewriter is equipped with a buffer memory that stores print data for one print line, and for the part that is once printed and stored in the memory, the corresponding character and code keys are operated. Characters can be erased simply by operating the erase instruction key CO.
Although the code can be erased, if the erased character or code is consecutive between space codes by operating the space key SP, the count value is subtracted by 1. Furthermore, when a word is printed again at the position where it was once erased, the count value is incremented by 1.

In the above embodiment, each mode is canceled by operating the line feed key LF, and the count value up to that point is automatically printed. A similar output operation of the count value is performed by multiple pressing of , and for the output of the count value, if the electronic typewriter has a display part, it should be used and only displayed, or It is also possible to configure the system so that intermediate counting results can be obtained without canceling each mode by operating a specific key.

As described above, this electronic typewriter automatically changes the number of characters, codes, or words by operating a specific key among the many keys that are operated to execute printing operations and various functional operations. This electronic typewriter was constructed so that it could perform counting operations, and it did not require the addition of any special keys or circuits; it simply added a small number of programs, making this type of electronic typewriter possible. The effects of the present invention are significant.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of an electronic typewriter according to the present invention, and FIG. 2 is a flowchart for explaining its first mode.

Claims (1)

[Claims] 1. A keyboard having a large number of keys for instructing a predetermined printing operation or functional operation, and outputting a control signal for the printing operation or functional operation in response to the operation of each key of the keyboard. It has a control means and a printing mechanism section that executes a printing operation or a functional operation based on a control signal from the control means, and the control means controls a first plurality of specific keys among the plurality of keys. A first mode is set when a multiple press state is detected, and a second mode is set when a multiple press state of a second plurality of specific keys different from the first plurality of specific keys is detected. mode setting means; a counter for counting the number of characters and codes printed according to key operations when the first mode is set, and counting the number of words printed when the second mode is set; and output means for outputting a command signal to stop the counting operation and print the contents of the counting means on the printing mechanism section in response to the operation of a specific key on the keyboard. electronic typewriter.