FR2644911A1 - COORDINATE READER - Google Patents

Abstract

The invention relates to a coordinate reader. According to the invention, a tablet 4 and sliders 6, 8 are electrically connected to the reader 2 and the reader transmits an indicated position to a central processing unit 24 by converting it into an X-Y coordinate signal. The invention applies in particular to the drawing.

Description

26449 11

  The present invention relates to a table-type coordinate reader for use as an input device for computer aided drawing, whose

  - main purpose is the drawing, the graphic etc.

  Until now, the goal-of-use

  of the table is the entry or reading of coordinates -

  of a grab and the like, and a cursor device with a button for entering or reading coordinates is used. In recent years, there are many cases where small tables are used as computer input auxiliary equipment and the like whose main purpose is input by keyboards but as the menu sheet is pasted on the table or the indicating device to indicate the menu or order on the display screen in most cases the operation is performed by a cursor with

  button or a style and the like.

  However, in a large table, there are disadvantages in that it is not easy for the operator to use the slider device by one hand manipulation and the efficiency does not. is

not satisfactory.

  The present invention aims to solve

the problems above.

  The invention will be better understood and other purposes, features, details and advantages thereof

  will become clearer during the description

  explanatory text which follows with reference to the appended drawings given solely by way of example and illustrating several embodiments of the invention and in which: FIG. 1 is a plan view of a device according to the invention; - Figure 2 is a plan view; - Figure 3 is a plan view; - Figure 4 is an explanation diagram; FIG. 5 is an explanatory block diagram; FIG. 6 is an explanatory block diagram; Figure 7 is a plan view; Figure 8 is a plan view; and - Figure 9 is a plan view. The construction of the present invention will be described in detail below with reference to the

  embodiment illustrated in the drawings Joints.

  In Fig. 5, reference numeral 2 denotes a reader of a known table type coordinate digitizer which reads and outputs a position of a cursor device on a table 4 as an XY coordinate signal. based on the output signal of the slider device. In this reader, two slider devices 6, 8 are provided, and each slider device 6, 8 is connected to the reader 2 by an input switching unit 12 of a coordinator 10 which is divided into a switching unit. entrance and a

  CPU as shown in Figure 6.

  The input change unit detects the signals of the slider devices 6 and 8, amplifies them by means of amplifiers 14 and 16 and configures them by means of filters 18 and 20 to transmit them from the switching unit of input 12 to a connection point of the slider device of the reader 2 by passing through an impedance converter 22 to transform the outputs and put them in input condition slider devices 6 and 8. In a central unit of processing 24, the switching timer of the input switching unit 12 is checked by a timer 26 and the data transmitted by an interface 28 of the reader 2 are put into digital form by matching them with the delay to make the discrimination of the coordinates of the slider devices 6 and 8 and the signal selection flags A and B are added and the data is transmitted to a host computer 32 by means of an interface 3 0. The input C of the input switching unit 12 is used to prevent the reading of erroneous coordinates during the switching of the signals A, B, and the switching is performed in the order of A, C, B, C, A .... For the slider device 6, using a slider with button or an exclusive device that will be described below. For the slider device 8,

uses a style or feather.

  The operation of the embodiment will be

now described.

  On table 4, when the input of the graph is made in the case of a straight line, at least the indication of two points, that is, the beginning and the end, is required. Similarly, in the case of a circle, an arc, an ellipse, an elliptical arc, a free curve, it is necessary to indicate several points. An operator manipulates the two slider devices 6, 8 with both hands, on the table 4, to complete the indication of the various points as shown in Figures 2 and 3 and draws the straight line, the arc and the like on the host computer 32. This is similar to the indication of the capture of a command menu and the like and menus 38, 40, as shown on the screen of a monitoring display 36 are handled by manipulation slider devices 6, 8 for introducing the order as shown in Figure 4. Similarly, as shown in Figure 4, a menu sheet 42 on the table 4 and the menus 38, 40 presented on the screen. the monitoring display 36 is processed by manipulating the two slider devices 6, 8 with both hands to enter the order. Furthermore, as shown in Figure 7, the menu sheets 44, 46 are processed on the table 4 by manipulating the two slider devices 6, 8 with both hands, to introduce the order. In FIG. 7, the screen of the display is enlarged and projected onto the transparent table 4 and a standard of coordinates of this projected drawing, enlarged and a standard of coordinates of the table 4 correspond to each other at 1: 1. FIG. 8 shows another embodiment where a rule 50 which is the exclusive cursor device is manipulated with the operator's left hand and a point of origin of the rule is set at a relative starting point of coordinates. , and a line is drawn following the rule 50 by means of a feather 52 which is retained in the right hand of the operator. Likewise, as shown in FIG. 9, the screen of the display is projected on the transparent table, by means of a projecting and enlarging mechanism and a ruler 54 on the screen to be presented on the table 4, can be manipulated by the slider device 6 held in the left hand of the operator. A standard coordinate of the enlarged screen draft drawing and a coordinate standard of the

  table correspond to each other at 1: 1.

  The present invention is constructed as described in the foregoing and the indication of the order and drawing of the graph can be effected effectively by manipulating the two slider devices of both hands on the table and in particular in the case where two points which are separated on a large digitizer must be indicated,

the invention is practical.

Claims (1)

CLAIM   An o-type coordinate reader, a table and slider devices are electrically connected to a reader, characterized in that the reader (2) outputs an indicated position of the slider devices on the table to a central processing unit (24) by converting it to an XY coordinate signal, said reader having two sliders (4,6) which are electrically connected to the reader (2) and a signal indicating the position on the table is applied to the reader by each slider device.