JPH0741631U - Pen input computer - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention devises the structure of the stylus pen without interrupting the drawing work by opening or closing the window for specifying the pen thickness during the drawing work. The main feature is to construct a pen input computer that can easily change the pen thickness setting by adding hardware. [Structure] A stylus pen 1 is newly provided with a knock mechanism 13, and a built-in counter counts the number of ONs through a switch 14 for detecting knock, and a control circuit 15 inside the pen changes the value of this counter. When it occurs, predetermined serial communication is performed between the pen and the grid, and the thickness information of the pen is input to the grid 2 with a built-in pen input computer.
Communicate to. Then, the CPU 8 transmits the pen thickness information to the system software, and the drawing software changes the pen thickness and displays the drawing pattern via the display unit 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a pen input computer.

[0002]

[Prior art]

 An information processing device that has an integrated input display device in which a tablet that is a coordinate input device and a display device are superposed has excellent operability because the input position of information and the display position of information match. It is attracting attention as a new input display method for computers. You can enter information as if you were writing a letter or picture on paper with a pencil, providing excellent operability. It is also possible to input a character code by handwritten character recognition. Recently, this function has been installed in a pen input personal computer and has become popular in the market.

The tablet of the pen input personal computer includes an electromagnetic induction type, an electrostatic coupling type, and the like. Here, the former electromagnetic induction type will be described as an example.

The stylus pen has a battery, a control circuit, and an induction coil for generating a magnetic field inside. An alternating magnetic field is generated from the induction coil.

A plurality of parallel conductor patterns independent of each other in the X and Y directions are drawn on the tablet grid inside the personal computer body, and an induced voltage is generated in each pattern by an AC magnetic field.

Since the height of the induced voltage changes depending on the position of the coil, the position of the coil can be calculated from the distribution of the induced voltage of each pattern.

Further, by serially interrupting the alternating magnetic field generated from the coil in a predetermined cycle in time, serial communication can be performed between the pen and the grid.

[0008]

[Problems to be solved by the device]

 By the way, to change the line thickness (line thickness by pen drawing) on the display screen with the above-mentioned pen input personal computer, specify the pen thickness of the drawing software of the computer main body each time. I had to open a window and reconfigure. Therefore, not only the software overhead becomes large, but also the operation is troublesome, which is a burden on the user.

The present invention has been made in view of the above circumstances, and the structure of the stylus pen can be configured without interrupting the drawing work by opening or closing the window for specifying the thickness of the pen during the drawing work. The idea is to provide a pen input computer that can easily change the pen thickness setting by devising some hardware.

[0010]

[Means for Solving the Problems]

 The stylus pen input computer of the present invention has a knock mechanism in the periphery thereof, and has a counter for counting the number of knocks each time through the knock mechanism and a communication circuit for digitizing the counter value and communicating with the tablet. , A tablet that recognizes the position information obtained through the stylus pen and the additional information above, a display unit that processes and displays the information input through the stylus pen through the arithmetic control circuit, and the counter value According to the above, a calculation control circuit for setting the thickness of a line drawn by a pen to the built-in screen display software and controlling the display unit is provided. The stylus pen uses an electromagnetic induction type, and the arithmetic processing circuit recognizes the position coordinates and additional information from the stylus pen from the change in the induction magnetic field detected via the tablet, and the stylus pen has an electromagnetic induction coil. It is also characterized in that serial communication is performed between the stylus pen and the tablet by intermittently alternating the AC magnetic field generated from the needle at a predetermined time period.

[0011]

[Action]

 The present invention adds a new knock mechanism to the stylus pen, counts the number of ON times by a built-in counter via a switch that detects the knock, and the control circuit inside the pen changes the value of this counter. A predetermined serial communication is performed between the pen and the grid, and pen thickness information is transmitted to the grid built in the pen input computer. Then, the CPU transmits the pen thickness information to the system software, and the drawing software changes the pen thickness and displays the drawing pattern via the display device. Thus, the thickness of the drawing pattern can be changed without interrupting the drawing work by opening and closing the window for changing the thickness of the pen during the drawing work. Therefore, the overhead of software is reduced and the burden on the operator is also reduced.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In the figure, reference numeral 1 is a stylus pen, which is composed of a pen frame 11, a pen shaft 12, a knock mechanism 13, a switch 14, a control circuit 15, a coil section 16, and a built-in battery 17.

The coil unit 16 generates an AC magnetic field, induces an induced voltage in a grid pattern inside the personal computer main body described later, and calculates the coil position from the distribution of the induced voltage.

Further, the additional information (line thickness) is detected by the switch 14 through the knock mechanism 13 and is counted by the control circuit 15, and the fact that the counter value has changed is detected. Communicate by serial communication. Serial communication is performed between the pen 1 and the grid by intermittently interrupting the AC magnetic field generated from the coil section 16 at a predetermined time period.

Reference numeral 2 is a tablet. The tablet 2 is inside the main body of the personal computer, and a plurality of parallel conductor patterns independent in the X direction and the Y direction are drawn on the tablet grid, and an induced voltage is generated in each pattern by the AC magnetic field. Since the height of the induced voltage changes depending on the position of the coil, the position of the coil can be calculated from the distribution of the induced voltage of each pattern.

Reference numeral 3 is a display unit, which displays information drawn by the stylus pen 1. Reference numeral 4 is a display control device, which displays the contents of the VRAM 5 on the display unit 4. The VRAM 5 is a random access memory in which screen information to be displayed on the display unit is stored in a bitmap format.

Reference numeral 6 is a ROM, which is a read-only memory that stores various fixed data such as a BIOS program for controlling the input / output device. Reference numeral 7 is a system RAM that stores an operating system (OS) that supports multitasking and multiwindow processing, and also has a function as a work RAM that stores data during processing.

Reference numeral 8 denotes a CPU which is a control center, and controls arithmetic operations or input / output devices according to programs stored in the ROM 6 and the RAM 7. Reference numeral 9 is a system bus, which is composed of a plurality of lines for address, data, and control, and the blocks 1, 2, 3, 4, 5, 6, 7, and 8 described above are commonly connected to each other. It is a data path between blocks.

In the present invention, a knock mechanism 13 is newly added to the stylus pen 1, and the number of ON times is counted by a built-in counter via a switch 14 for detecting the knock, and the control circuit 15 inside the pen controls the counter. When the value changes, a predetermined serial communication is performed between the pen and the grid, and the pen thickness information is transmitted to the grid (tablet 2) built in the pen input computer.

Then, the CPU 8 transmits the pen thickness information to the system software stored in the system RAM 7, and the drawing software also changes the pen thickness to change the pen thickness to the display control device via the BIOS program stored in the ROM 6. 4 is displayed and the display data expanded in the VRAM 5 is displayed as a drawing pattern via the display unit 3.

As a result, the CPU 8 can change the thickness of the drawing pattern without interrupting the drawing work by opening and closing the window for changing the thickness of the pen during the drawing work.

[0024]

[Effect of device]

 As described above, according to the present invention, the stylus pen structure is devised and slightly modified without interrupting the drawing work by opening or closing the window for specifying the pen thickness during the drawing work. By adding hardware, it is possible to provide a pen input computer that can easily change the pen thickness setting, which reduces system overhead and operator burden. To be done.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

1 ... Stylus pen, 2 ... Tablet, 3 ... Display unit, 8 ... CPU, 13 ... Knock mechanism, 14 ... Switch,
15 ... Control circuit.

Claims (4)

[Scope of utility model registration request] 1. A stylus pen having a knock mechanism in the periphery, a counter for counting the number of knocks each time through the knock mechanism, and a communication circuit for digitizing the counter value and communicating with a tablet, and a stylus pen. A tablet that recognizes the position information and the above-mentioned additional information obtained through the display, a display unit that processes and displays the information input through the stylus pen through the arithmetic and control circuit, and a built-in screen display according to the counter value. A pen input computer, comprising: an arithmetic control circuit that sets the thickness of a line drawn by a pen to software and controls the display unit. 2. An electromagnetic induction stylus pen is provided, and position coordinates and additional information from the stylus pen are recognized from changes in the detected induction magnetic field.
Pen input computer described. 3. The stylus pen and the tablet are serially communicated by intermittently alternating an alternating magnetic field generated from an electromagnetic induction coil of the stylus pen at a predetermined time period. The pen input computer according to claim 2. 4. The pen input computer according to claim 1, wherein the tablet and the display unit are an integrated input display device in which the tablet and the display unit are overlapped with each other.