JPS61184631A - Electronic typewriter - Google Patents

Abstract

PURPOSE:To permit the use of an electronic typewriter when the compared results are equal and to allow one person to use it only by himself by comparing a previously stored password with that inputted through a keyboard. CONSTITUTION:An address bus line 14 and a data bus line 15 are connected to the CPU11 of the electronic typewriter, and the line 14 is provided with a ROM12 storing a program, a sentence memory, etc., whereby a RAM13 is connected. The ROM12 and the RAM13 are connected to the line 15, and simultaneously an I/O port 18 is connected which acts as an interface between the keyboard 2 inputting the password, a display device 3 and a variety of functions of the typewriter. Under the control of the CPU11 the password stored previously in the RAM13 is compared with the password inputted through the keyboard 2. When they are equal, the function of the typewriter is operated, and the typewriter can be used only by one person, thereby improving application for general purpose.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to electronic typewriters.

[Prior Art] Conventionally, electronic typewriters were always ready for operation once the power was turned on. Therefore, if a person previously used a text and stored it in the text memory, it was possible for another person to read out and print out the contents of the text memory when using the machine later.

[Problems to be Solved by the Invention] Such conventional electronic typewriters have a problem in that it is not possible to store important sentences that are not known to others in the document memory.

This invention was made to solve this problem, and it provides an electronic typewriter that cannot be used unless a preset password is entered from the keyboard, thereby making it possible to use it for personal use. The purpose is to provide

Another object of the present invention is to provide an electronic typewriter in which passwords can be registered and changed freely, and the practicality of the typewriter can be improved.

A further object of the present invention is to provide an electronic typewriter which can be used without entering a password and can be used like a normal typewriter without entering a password, thereby improving its versatility.

[Means for Solving the Problems] This invention provides a keyboard with a plurality of keys for characters, symbols, etc. and a text memory, and operates a printing mechanism to print on paper by selectively operating each key on the keyboard. An electronic typewriter that can print out characters, symbols, etc. as well as store characters, symbols, etc. in a text memory has a password storage means and a password input from the keyboard as the password stored in the storage means. The system is provided with a means for comparing the two passwords and determining whether the two passwords match, and a means for permitting printing of characters, symbols, etc. by key input from the keyboard when the determining means determines that the two passwords match. be.

Further, the present invention includes a password memory, a key for declaring registration of a password, and registering in the password memory a password input from a keyboard when the registration declaration key is input when a password is not registered in the password memory. When a password is already registered in the password memory, when the registration declaration key is input and a password is entered from the keyboard, that password is compared with the password registered in the password memory, and both passwords are registered. a means for determining whether the two passwords match, a means for permitting printing of characters, symbols, etc. by key input from a keyboard when the determining means determines that the two passwords match; and a means for determining whether the two passwords match by the determining means. The device is provided with means for re-registering the password inputted from the keyboard into the password memory as a new password when the registration declaration key is inputted when the registration declaration key is inputted.

Furthermore, the present invention provides means for clearing the password registered in the password memory when the registration declaration key is inputted when the specific key and the determining means determine that both passwords match, and when the specific key is subsequently inputted. and means for permitting printing of characters, symbols, etc. by key input from a keyboard without inputting a password when the password is not registered in the password memory.

[Function] In the present invention having such a configuration, by first inputting the same password as the password stored in the storage means from the keyboard, printout and text by inputting characters, symbols, etc. from the keyboard can be performed. Storage processing for memory becomes possible.

In addition, if a password has not been registered in the password memory, the password can be registered in the password memory by declaring the registration using the registration declaration key, or if the password has already been registered in the password memory, the contents cannot be changed. It becomes possible.

Furthermore, if a password has already been registered in the password memory, enter the same password, then use the registration declaration key to declare the password registration, and operate a specific key to register the contents of the password memory. , and from now on, it is possible to print out characters and symbols from the keyboard and store them in the text memory without having to enter a password.

[Embodiments of the invention] Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 is a perspective view showing the external appearance, where 1 is the housing, 2 is a keyboard with character keys, symbol keys, function keys, etc., 3 is a display device that can display, for example, one line, and 4 moves left and right. 5 is a sheet of paper that is wrapped around a platen and on which characters, symbols, etc. are printed by the operation of the printing mechanism. The printing mechanism is a type in which, for example, a circular printing wheel is provided with a plurality of radial spokes, a type is attached to the tip of each spoke, and printing is performed by hitting the type with a printing hammer. using something.

The keyboard 2 is provided with a password key 201, which is a key for declaring the registration of a password, and a return key 202, which is a specific key, as function keys. Note that this return key 202 is also used to return the carrier during use.

FIG. 2 is a block diagram showing the circuit configuration, and 11 is a CPU (
12 is a ROM (read only memory) that stores program data, etc.; 13 is a text memory; an input buffer 13 shown in FIG. 3; an accumulator 132; a counter A 133; a counter 8134.
, a register A 135, a password memory 136, a match flag CF, and the like.

The CPU 11, ROM 12 and RAM 13 are connected by an address path line 14 and a data path line 15.

16 is a keyboard interface, 17 is a display interface, and 18 is an I10 board. The CPU
11 and each in 9-7x-s 16.17 and h i/.

It is connected to the boat 18 by the data path line 15. The keyboard 2 is connected to the keyboard interface 16, and the display device 3 is connected to the display interface 17. Said I
10 boat 18 includes a carrier drive circuit 20 for driving and controlling a carrier motor 19, a wheel drive circuit 22 for driving and controlling a wheel motor 21, and a ribbon motor 23.
A ribbon drive circuit 24 that drives and controls the printing hammer 25, a hammer drive circuit 26 that drives and controls the printing hammer 25, and a buzzer drive circuit 28 that controls the operation of the buzzer 27 are connected.

The CPU 11 controls each section based on program data in the ROM 12, and is designed to particularly perform the processes shown in FIGS. 4, 5, and 6.

When the power is turned on, the carrier is moved to the home position, the print wheel is then set to the home position, and key input interruptions are permitted. In this state, it is checked whether or not a password is registered in the password memory 136, and if it is registered, the routine is shifted to the pass processing shown in FIG. If it is not registered, rPAss WORD USE is displayed on the display device 3.
? Display J and wait for key input. In this state, when the password key 201 is input from the keyboard 2, the routine shifts to the path setting shown in FIG. 5.

Further, when the return key 202 is input, the routine is shifted to main processing. This main process is a normal typewriter operation, in which characters and symbols inputted from the keyboard 2 are printed out on paper 5 by the printing mechanism 4 and stored in the text memory. If the key input is neither the password key 201 nor the return key 202, the display on the display device 3 is cleared and rPAss WORD tJsE? J
(7) Display and wait for key input.

In the path setting, as shown in FIG. 5, first, it is checked whether the coincidence flag CF is set to "1". "1
”, the password registered in the password memory 136 is displayed on the display device 3. Also, if it is not set to "1", rPAS is displayed on the display device 3.
Display S I J. Next, set counter B134 to “0”
and wait for key input. In this state, if a character key is input, a password setting process is performed, and if the return key 202 is operated, the content of counter B134 is checked, and if the content is ``1'' or more, the routine is executed. The password memory 136 is cleared if the password is "0", and the routine is then shifted to the main processing. When a character key is input, the input character is displayed on the display device 3, and then it is checked whether the input character is within a predetermined usage range, and if it is within the usage range. Next, it is checked whether the total number of input characters including the input characters is within 6 characters. If it is within 6 characters, the counter B134 is incremented by 1. Also, when the input characters are outside the usable range or the total number is 7 or more, the buzzer drive circuit 28 is controlled to operate the buzzer 27, erase the input character display, and enter the routine by key input. Return to standby state. After the counter B 134 is incremented, the character information taken into the input buffer 13) is stored in a predetermined digit of the password memory 136. Then, the address indicating the input digit in the password memory 136 is incremented by 1 and the routine returns to the key input standby state.

As shown in FIG. 6, the pass processing begins with the display device 3):
rPAss WORD? Display J. = both set counter A133 to "O" and register A1
Clear 35. It then waits for key input. When a character key is input in this state, the input character is displayed on the display device 3, and then it is checked whether the total number of input characters including the input characters is within six characters.

Then, if it is within 6 characters, add 1 to counter A135,
The corresponding one digit of the password memory 136 is read into the accumulator 132 and compared with the character information stored in the input buffer 13). If they match, the address is incremented by 1 to designate the next digit in the password memory 136, and the routine returns to the key input standby state.

If there is a mismatch, "1" is shifted into the register A135, the address is incremented by 1, and the routine returns to the key input standby state. Further, when the total number of input characters becomes 7 or more, the buzzer drive circuit 28 is controlled to operate the buzzer 27, erase the display of the character that has just been input, and return the routine to a key input standby state.

Further, when there is a key input of the return key 202, the contents of the counter A133 and the contents of the counter B134 are compared,
If both contents match, it is then checked whether each digit of register A135 is zero. If all the digits are zero, the match flag CF is set to rlJ and the routine is transferred to the "bus parakeet" shown in FIG.
If the contents of the register A135 do not match, or if there is a 1 in any digit of the register A135, the display on the display device 3 is cleared and the routine returns to the beginning of the pass process.

In the embodiment of the present invention having such a configuration, when the power is turned on with no password set in the password memory 136, rPAss WORD is displayed on the display device 3.
USE? J is displayed.

If you operate the password key 201 in this state, the display will be r.
PAss! Switch to J and you can now set a password. Further, by operating the return key 202, it becomes possible to use the device without setting a password. When a character in a preset range is entered by key in a state where a password can be set, the character is stored in the password memory 136 as one character of the password. At this time, password memory 13
Counter B134 increases by 1 every time character information is stored in 6.
be done. Then, if the user enters keystrokes within a range of no more than six characters and finally operates the return key 202, the password is set in the password memory 136 and the device can be used. If you operate a character key outside the range that can be used with this key operation or input more than 6 characters, it will be treated as a mistake operation, the buzzer 27 will turn on, and the input displayed on the display device 3 will be Characters are erased.

Once a password is set in the password memory 136 in this way, the next time the device is used, the user must enter the password that has been set in order to use the device. That is, when the power is turned on, rPA is displayed on the display device 3.
ss WORD? J is displayed. In this state, when each character of the password is keyed in, the counter A133 is incremented each time a character is keyed in, and a comparison is made with the corresponding characters of the password stored in the password memory 136 to determine whether they match or do not match. . When a mismatch is determined, "1" is input to register A135. After entering the password, press the return key 20
When the operation 2 is performed, the contents of the counter A 133 and the contents of the counter B 134 are compared, and it is determined whether the set password is input and the number of characters matches the password.

If the number of characters does not match, the input characters displayed on the display device 3 are immediately cleared and the rPAss W
ORD? The display will change to J, and you will have to re-enter the password. When it is determined that the number of characters matches by comparing the counters, each digit of register A135 is then set to "
0" is determined. Register A13
If there is even one "1" in 5, it is determined that the password characters do not match, and the input characters displayed on the display device 3 are immediately cleared and the rPAssWORD?
The display will change to J, and you will have to re-enter the password. If all the digits of the register A 135 are rOJ, the match flag CF is set to "1", and when the return key 202 is operated thereafter, the device becomes usable.

In this way, you can register a password, and once you have registered it, you will not be able to use it again unless you key in the same characters as the password you set. For example, if you want to store confidential text in the text memory. The device can be made private for personal use, and there is no risk that secret texts will be revealed to others.

Further, by operating the password key 201 after inputting the same characters as the set password, the password can be set in the password memory 136 again. In other words, the password can be changed. At the time of this setting, the password registered in the password memory 136 is first displayed on the display device 3. Subsequent operations may be performed in the same manner as the password setting operation described above, and at this time, the password to be changed may be entered using a key.

Further, after inputting the same characters as the set password, if the password key 201 is operated and then the return key 202 is operated, the contents of the password memory 136 are cleared and the password is canceled. After that, anyone can use it without entering a password.

In this way, passwords can be freely changed or canceled, improving practicality and versatility.

In the above embodiment, the password is electrically registered in the password memory, but the password is not necessarily limited to this. For example, a mechanical device such as a gauge switch may be used to set the password. In this case, the switch must be housed in the housing 1, for example, where it cannot be easily operated.

[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide an electronic typewriter that cannot be used unless a preset password is entered from the keyboard, thereby making it possible to use it for personal use. This is something that can be provided.

Further, according to the present invention, it is possible to provide an electronic typewriter in which passwords can be registered and changed freely, and whose practicality can be improved.

In summary, according to the present invention, it is possible to provide an electronic typewriter that can be used without entering a password, since the password can be canceled, and thus the electronic typewriter can be used like a normal typewriter without inputting a password, and its versatility can be improved.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Figure 1 is a perspective view showing the external appearance, Figure 2 is a block diagram, Figure 3 is a diagram showing the main memory formed in the RAM, and Figure 4 is a CPU FIG. 5 is a flow chart showing the process of path setting by the CPU, and FIG. 6 is a flow chart showing the bus process by the CPU. 2... Keyboard, 201... Password key, 2
02...Return key, 4...Printing device, 11...
・CPU (Central Processing Unit), 12...ROM (Read Only Memory), 13...RAM (Random Access Memory), 133...Counter A11
34...Counter B, 135...Register A, 13
6... Password memory, CF... Match flag.

Claims (3)

[Claims] (1) A keyboard with multiple keys for characters, symbols, etc. and a text memory are provided, and by selectively operating each key on the keyboard, the printing mechanism is operated to print characters on paper.
An electronic typewriter capable of printing out symbols, etc. and storing characters, symbols, etc. in the text memory, comprising a password storage means and a password input from the keyboard, the password being stored in the storage means. means for comparing the two passwords to determine whether the two passwords match, and means for permitting printing of characters, symbols, etc. by key input from the keyboard when the determining means determines that the two passwords match. An electronic typewriter characterized by: (2) A keyboard with multiple keys for characters, symbols, etc. and a text memory are provided, and by selectively operating each key on the keyboard, the printing mechanism is operated to print characters on paper.
An electronic typewriter capable of printing out symbols, etc. and storing characters, symbols, etc. in the text memory includes a password memory, a key for declaring password registration, and a password not registered in the password memory. means for registering a password input from the keyboard in the password memory when the registration declaration key is input; and means for registering the password input from the keyboard in the password memory when the registration declaration key is input. means for comparing the password with a password registered in the password memory and determining whether the two passwords match when the password is entered from the keyboard; and the determining means determines whether the two passwords match. means for permitting the printing operation of characters, symbols, etc. by key input from the keyboard when the password is entered; and means for permitting the printing operation of characters, symbols, etc. by key input from the keyboard; 1. An electronic typewriter, comprising means for re-registering a password input from the password memory as a new password in the password memory. (3) A keyboard with multiple keys for characters, symbols, etc. and a text memory are provided, and by selectively operating each key on the keyboard, the printing mechanism is operated to print characters on paper.
In an electronic typewriter capable of printing out symbols, etc. and storing characters, symbols, etc. in the text memory, a password memory, a key for declaring registration of a password, a specific key, and a key for the password memory are provided. means for registering a password input from the keyboard in the password memory when the registration declaration key is input when the password is not registered; and means for registering the registration declaration when the password is already registered in the password memory. When a key is input and a password is entered from the keyboard, the password is compared with the password registered in the password memory, and a means for determining whether the two passwords match; means for permitting printing of characters, symbols, etc. by key input from the keyboard when it is determined that the passwords match; and means for permitting the input of the registration declaration key when the determining means determines that the two passwords match. means for re-registering a password input from the keyboard as a new password in the password memory when the password is inputted from the keyboard;
means for clearing the password registered in the password memory when the registration declaration key is inputted and the specific key is subsequently inputted when the determining means determines that the two passwords match; An electronic typewriter characterized in that the electronic typewriter is provided with means for permitting printing of characters, symbols, etc. by key input from the keyboard without inputting a password when no password is registered in the password memory.