JPH07160420A - Handwriting operation type computer - Google Patents

Abstract

PURPOSE:To prevent a decrease in security by deciding whether input is performed with a stylus pen or not when a pressure sensing type digitizer detects the input. CONSTITUTION:This computer consists of a computer main body 2 which has the stylus pen 1 and the pressure sensing digitizer 3a that detects input, a pen- down detecting circuit 11 which detects pen down of the stylus pen 1, communication circuits 8 and 13 which make a communication between the stylus pen 1 and computer main body 2, and a recognition part 6 which makes the communication between the stylus pen 1 and computer main body through the communication circuits 8 and 13 when the pen-down detecting circuit 11 detects the pen-down and recognizes the input from the stylus pen according to the communication results.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwriting operation type computer for inputting by handwriting operation with a stylus pen, and more particularly to a handwriting operation type computer having a pressure sensitive digitizer. Handwriting input technology is expected to be an effective human interface by people who are not familiar with computers, and the development of related technology is desired.

[0002]

2. Description of the Related Art FIG. 4 is a diagram for explaining an example of a handwriting operation type computer having a conventional pressure-sensitive digitizer. In FIG. 4, 1'is a stylus for handwriting input, 2 is a handwriting operation type computer main body, 3a is a pressure-sensitive digitizer, 3b is a flat display, and pressure-sensitive digitizer 3a and flat display 3b are input-integrated type tablets. Make up three. 4a is a digitizer control circuit, 4b is a coordinate register for holding coordinate values, 5a is a display control circuit, 5b.
Is a display memory, 10 is a CPU, and 7 is a memory circuit.

The CPU 10 operates in accordance with a program stored in the memory circuit 7 in advance, and the flat display display 3
Display on b. The digitizer control circuit 4a detects the input to the pressure-sensitive digitizer 3a by the stylus pen 1'and records the coordinate value in the coordinate register 4b and the CPU.
Notify 10.

The CPU 10 reads the coordinates from the coordinate register 4b and performs processing such as handwriting display according to a program stored in the memory circuit 7 in advance. Further, the pressure-sensitive digitizer 3a can also perform input using a device other than the stylus pen 1 ', and in this case, the same process is performed.

[0005]

In the conventional method using the pressure-sensitive digitizer, other than the stylus pen 1 ',
For example, the input can be performed with a finger, a coin, or a stick-shaped object. Therefore, since the input can be performed on the computer without using the designated stylus pen, the security of the system may be deteriorated.

It is an object of the present invention to provide a handwriting operation type computer capable of preventing a decrease in security by determining whether the input is made by a stylus pen when the pressure-sensitive digitizer detects a handwriting input. And

[0007]

FIG. 1 is a diagram for explaining the principle of the present invention. In the figure, 1 is a stylus pen, 11 is a pen down detection circuit, 13 is a communication circuit, and 14 is a pen ID holding circuit. Reference numeral 2 is a computer main body, 3a is a pressure-sensitive digitizer, 6 is a recognition unit, 7 is a memory circuit, 8 is a communication circuit, and 9 is a startup document name holding device.

The structure of the handwriting operation type computer according to the present invention will be described below. (1) Stylus pen 1 having at least pen-down detection circuit 11, computer main body (2) having pressure sensitive digitizer 3, communication circuits 8 and 13 for communicating between stylus pen 1 and computer main body 2, and stylus pen 1 A recognition unit 6 for recognizing the information sent from is provided. (2) A pen ID holding circuit 14 storing the ID of the stylus pen 1 is provided in the stylus pen 1. (3) In the computer main body 2 of the handwriting operation type computer, a startup document name holding circuit 9 storing an executable menu corresponding to the ID number of the pen is provided.

[0009]

As a function of claim 1, when the handwriting operation type computer receives an input, the computer body can recognize the pen-down of the stylus pen. You can reject the input. As a function of claim 2, since the stylus pen that has made the input can be specified in the computer main body, only the input from the specific stylus pen can be accepted.

As a function of claim 3, since the computer main body can associate the ID number of the stylus pen with the executable menu, the executable menu can be limited for each stylus pen.

[0011]

2 and 3 are a block diagram and a processing flowchart of an embodiment of the present invention, respectively. The handwriting operation type computer of this embodiment is composed of a stylus pen 1 and a computer main body 2.

In the figure, 1 is a stylus pen, and 11a
Is a pen tip switch, 11b is a pen status register, 12 is a CPU, 13 is an infrared communication circuit capable of wireless communication, and 14
Is an ID holding circuit. In addition, 2 is a computer main body,
3a is a pressure-sensitive digitizer, 3b is a display, 4a is a digitizer control circuit, 4b is a coordinate register, 5a is a display control circuit, 5b display memory circuit, 6 is a CPU, 7 is a memory circuit, 8 is an infrared communication circuit, and 9 is a start-up circuit. The document name holding circuit, the pressure-sensitive digitizer 3a and the display 3b are integrated to form an input / display integrated tablet 3.

In FIG. 3, S1 to S20 are computer main body 2
P1 to P8 are processing procedures of the stylus pen 1. The processing in the embodiment of the present invention will be described below. S1: The CPU reads the activation program from the memory 7. S2: Then, the CPU 10 executes the read startup program. S3: The display control circuit 5a fetches the data necessary for displaying the screen in the input waiting state from the image memory 5b. S4: The display control circuit 5a displays the screen in the input waiting state on the display and waits for the input from the user. S5: When the stylus pen 1 inputs to the computer main body 2, the digitizer control circuit 4a detects the input to the pressure-sensitive digitizer 3a. S6, S7: The digitizer control circuit 4a records the coordinate value in the coordinate holding circuit 4b and notifies the CPU 10 that there is an input to the digitizer. S8: Upon receiving this notification, the CPU 10 requests the stylus pen 1 to transmit data via the infrared communication circuit 8. P1: On the other hand, when the stylus pen 1 inputs to the computer body, the pen tip SW11a turns on. P2, P3: When the pen tip SW 11a is turned on, a value indicating the pen-down state is set in the pen state register 11b, and a data request from the computer main body 2 is waited for. P4: When receiving a request from the computer main body, a value indicating the state of the pen tip is read from the pen state register 11b in the stylus pen 1. P5: The read data is transmitted to the computer main body 2 via the infrared communication circuit 13. S9: The CPU 10 in the computer main body 2 is the infrared communication circuit 8
Receives the data transmitted by the Slitus pen 1 via
The CPU 10 checks the received data and checks the stylus pen 1
Check if is pen down. S10, S11: When it is confirmed that the stylus pen 1 is pen-down, it is determined that the stylus pen is input, and the ID of the stylus pen 1 is transmitted to the stylus pen 1 via the infrared communication circuit 8. Request. S10 ': If the stylus pen 1 is not pen-down, it is determined that the stylus pen is not used for input, and the input is ignored. P6, P7: The stylus pen 1 is I from the computer main body 2.
Upon receiving the D transmission request, the CPU 12 reads the ID of the stylus pen 1 from the pen ID holding circuit 14. P8: The read ID is transferred via the infrared communication circuit 13.
It is transmitted to the computer main body 2. S12, S13: The computer main body 2 is the I of the stylus pen 1.
Upon receiving D, the CPU 6 reads from the memory 7 the ID of the stylus pen that is permitted to be used. S14: The CPU 10 compares the ID of the stylus pen 1 with the ID read from the memory 7. S15, S16: If there is a matching number as a result of the comparison in S14, the stylus pen 1 is permitted to be used. S15 ': If there is no matching number as a result of the comparison in S14, the stylus pen 1 is not permitted to be used and the coordinate input is ignored. S17, S18: When the stylus pen 1 is in the use-permitted state, the CPU 10 reads the coordinate value from the coordinate register 4b and performs the handwriting display process and the menu selection process according to the program held in the memory circuit 7. S19: The CPU 10 refers to the activation document name holding circuit 9,
Confirm that the stylus pen 1 is a menu that can be selected. S20: If the confirmation is made in S18, the menu selected by the stylus pen 1 can be executed.

As described above, by providing the stylus pen with the pen-down detection circuit and notifying the computer main unit of the pen-down, the timing for transmitting the ID can be set. This will send your ID when you need it,
It can only accept input from a stylus pen that is pen down.

[0015]

According to the present invention, the stylus pen is provided with an ID holding circuit for storing the ID of the stylus pen, and by notifying the computer main body, the computer main body 2 can specify the stylus pen used at the time of input, and the specific stylus can be specified. Only pen input can be accepted.

Further, by providing a stylus pen ID and a starting document name holding circuit 9 storing an executable menu corresponding to the pen ID in the computer main body 2, the stylus pen ID can be changed depending on the ID of the stylus pen used for input. You can switch the executable menu.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a configuration diagram of an embodiment of the present invention.

FIG. 3 is a processing flowchart of an embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional example.

[Explanation of symbols] 1 ... Stylus pen 2 ... Computer body 3a ... Pressure sensitive digitizer 6 ... Recognition unit 8 ... Communication circuit 9 ... Startup document name holding circuit 11 ... Pen down Detection circuit 14 ... Pen ID holding circuit

Claims (3)

[Claims] 1. A computer body (2) having at least a stylus pen (1) and a pressure-sensitive digitizer (3a) for detecting an input, and a pen-down detection circuit (11) for detecting that the stylus pen (1) is pen-down. A communication circuit (8, 13) for communicating between the stylus pen (1) and the computer body (2) and the pen down detection circuit (1
1) when the pen down is detected, the communication circuit (8, 1,
And a recognition unit (6) for recognizing that the stylus pen (1) is an input from the stylus pen based on the communication result. Handwritten operation type calculator. 2. The stylus pen (1) according to claim 1, further comprising a pen ID holding circuit (14) for storing a pen ID number, and based on an output signal from the pen down detection circuit (11), An ID number for specifying the stylus pen (1) is transmitted from the pen ID holding circuit (14) via a communication circuit (8, 13), and the computer main body (2) uses the transmitted ID number to transmit the stylus pen (1). The handwriting operation type computer according to claim 1, wherein the handwriting operation type computer is specified. 3. The computer main body (2) according to claim 2.
A startup document name holding circuit (9) for storing a pen ID number and a menu executable for each pen ID number is provided, and the pen ID number transmitted from the stylus pen (1) is used for the startup document holding circuit. The handwriting operation type computer according to claim 2, wherein the executable menu is switched depending on the ID number of the pen with reference to the data stored in (9).