JPH0142005B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a coordinate value input device for a computer.

Prior Art Conventionally, input methods such as a joy stick, a light pen, and a mouse have been used to input coordinate values into a computer. However, since all of these methods require operators to operate using their hands, they must take their hands off the keyboard when inputting coordinate values, making it difficult to perform tasks that involve inputting characters, numbers, etc. The problem was that it had poor operability.

There is also a method of detecting the movement of the worker's viewpoint from the eyeball potential, but this method requires a large-scale and expensive device, and also requires various detection devices to be attached to the worker's face, etc. However, the problem was that it placed a heavy burden on the workers.

Purpose of the Invention This invention solves the above-mentioned deficiencies in the prior art, provides a simple and inexpensive device configuration, reduces the burden on the operator, and does not require the operator to take his hands off the keyboard. To provide a coordinate value input device for a calculator which can input coordinate values by simply changing the direction of the worker's face with respect to a CRT display, has good operability, and can improve work efficiency. The purpose is to

Composition of the Invention In order to achieve the above-mentioned object, the present invention includes a light emitting element provided either on the face of a worker or around a CRT display, and a light emitting element that directly receives light from the light emitting element. Alternatively, multiple light receivers placed around the CRT display can receive the light indirectly via a reflector attached to the worker's face and generate a signal depending on the intensity of the light. The device is equipped with a control means for displaying the coordinates of a cursor or the like on a CRT display at a position corresponding to the distribution state of light for each light receiving element based on signals from each light receiving element.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 is a CPU (central processing unit) of a computer such as a word processor or an office computer. It is possible to calculate A CRT display 2 that can display the output of the CPU 1 is provided above the CPU 1, and the user can work while checking the display on the CRT display 2. or,
A keyboard 3 is provided at the front of the CPU 1, and the keyboard 3 can be used to input data.

A light emitting element 4 is disposed at the upper part of the front surface of the CRT display 2, and emits infrared light toward the operator in front of the CRT display 2. Reflective glasses 5, which can be worn on the worker's face and serve as reflectors capable of removing ultraviolet rays, reflect the light from the light emitting elements 4 according to the position and direction of the worker's head. First to third light-receiving elements 6, 7, and 8 are disposed on both left and right sides and at the bottom of the front surface of the CRT display 2, and the light from the light-emitting element 4 is reflected through glasses 5.
It receives the reflected light indirectly, and generates a signal depending on the intensity of that light.

As shown in FIG. 3, an analog switch 9 is connected to the first to third light receiving elements 6, 7, 8, and each light receiving element 6 to 8 is
The signals from the amplifier 10 are sequentially sent to the amplifier 10. An A/D converter 11 is connected to the amplifier 10, and converts the electrical signal amplified by the amplifier 10 into a digital signal to enable processing by the CPU 1. In this embodiment, the control means is constituted by the CPU 1, and a signal from the A/D converter 11 based on the output from each light receiving element 6 to 8 is used to control the reflection glasses 5 as shown by concentric circles in FIG. 2, for example. The distribution state of the reflected light is calculated and the coordinates of a cursor or the like are displayed on the CRT display 2 at a position corresponding to the distribution state of the reflected light.

Next, the operation of this coordinate input device will be explained according to the flowchart of FIG.

Now, as shown in FIG.
If you want to insert data by operating the keys on the keyboard 3 with the CRT display 2 hanging, turn your head and focus on the position you want to insert in the data displayed on the CRT display 2. The light from the light-emitting element 4 is reflected by the reflective glasses 5 and reaches each of the light-receiving elements 6, 7, 8, respectively.The light from the light-emitting element 4 is reflected by the reflective glasses 5 and reaches each of the light-receiving elements 6, 7, 8, respectively, depending on the distribution of reflected light as shown by concentric circles in FIG. A signal is generated from 8.

The signal is transmitted to the analog switch 9 shown in FIG.
CPU via amplifier 10 and A/D converter 11
1, the center of the reflected light distribution is calculated in the CPU 1, and the coordinates of a cursor or the like are displayed on the CRT display 2 at a position corresponding to the center of the reflected light distribution. Therefore, the operator can freely move the cursor position without taking his hands off the keyboard 3, simply by shaking his head left and right or up and down to change the distribution of reflected light. Insertion work, etc. can be performed efficiently.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may be configured as follows.

(1) Instead of the reflective glasses 5, use a reflective mirror that can be attached to the forehead, etc. as a reflector.

(2) Using a light emitting element 4 that can be attached to the worker's forehead, etc. without using a reflector;
The light-receiving elements 6 to 8 are configured to output by direct light from.

(3) The distance of light travel from the light emitting element 4 to the light receiving elements 6 to 8 based on the total amount of light detected by each of the light receiving elements 6 to 8, that is, the space between the CRT display 2 and the worker's head. Calculate the distance and add the depth coordinate value to the vertical and horizontal two-dimensional coordinate values in the above embodiment, thereby making it possible to input the three-dimensional coordinate value.

Effects of the Invention As detailed above, this invention has a simple and inexpensive device configuration, reduces the burden on the operator, and eliminates the need to take one's hands off the keyboard. Coordinate values can be input by simply changing the direction of the worker's face, providing excellent operability and improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing the usage state of a computer according to an embodiment of the present invention, FIG. 2 is a front view of a CRT display illustrating the distribution of reflected light to each light receiving element, and FIG. The control circuit diagram, FIG. 4, is a flowchart for explaining the operation. CPU as a control means...1, CRT display...2, light emitting element...4, reflective glasses as a reflector...5, light receiving element...6, 7, 8.

Claims (1)

[Claims] 1. A light emitting element 4 provided on either the worker's face or around the CRT display 2; A plurality of light receiving elements 6 and 7 are arranged around the CRT display 2 so as to receive the light indirectly through the attached reflector 5 and generate signals corresponding to the intensity of the light. ,8
and, based on the signals from each of the light receiving elements 6, 7, 8, to display the coordinates of a cursor etc. on the CRT display 2 at a position corresponding to the distribution state of light for each of the light receiving elements 6, 7, 8. A coordinate value input device to a computer comprising a control means 1. 2. The coordinate value input device for a computer according to claim 1, wherein the reflector is ultraviolet ray removing glasses 5 that reflect infrared light emitted from the light emitting element 4.