CN85107215B

CN85107215B - Data input system with indication arrangement

Info

Publication number: CN85107215B
Application number: CN85107215A
Authority: CN
Inventors: 森泽俊一
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 1985-09-28
Filing date: 1985-09-28
Publication date: 1987-02-18
Also published as: CN85107215A

Abstract

According to a data input system with an indicating device, an indicating device interface and a key code producer are arranged in a key board device, and the key code producer can provides data to the indicating device interface and is given with an undefined key code. The key board device comprises a microprocessor which is used for generating key codes corresponding to downwards pressed keys. The data from the indicating device is given with the undefined key code, and the undefined key code is used as a data code from the key board device and is sent to a key board interface in a data processing device. The data processing device checks a certain code in the sent data and determines that the received data is originally supplied by the indicating device.

Description

The data entry system of band indicating device

The present invention relates to have the data entry system of indicating device.

The indicating device of existing various types has been developed out as the input mechanism in the data handling system as cursor (mouge) and tracking ball (track baII).Common data handling system is all in conjunction with the input interface of promising reception from the next data of these indicating devices.

In common system, be necessary for indicating device and invest the I/O(input and output) address of device, and need to revise system design.

The objective of the invention is to provides a data input system to indicating device, in this system, passes through an original interface agency from the data that device indicating comes, and as a keyboard interface, can enter main frame at an easy rate.

In order to reach above-mentioned purpose of the present invention, and provide an indicating device data entry system, this system has: an indicating device of specifying a two-dimentional coordinate points on display screen; A key board unit, this key board unit has a key code generator, and it produces key corresponding to each key in those keys of forming dot matrix; With a data processing equipment of receiving key board unit by keyboard knot mouth, this device comprises: be installed in the key board unit interfacing equipment for the indicating device that connects indicating device and key board unit, produce equipment with the key that is installed in the indicating device in the key board unit, this equipment is in order to invest a non-definition key and provide the input data of conduct from the next definition key of keyboard equipment to data processing equipment for the data of coming from indicating device.

According to the present invention, the data that the face that comes from indicating device is sent to the indicating device interface are invested a non-definition key of key board unit.Therefore, data processing equipment can be accepted from the next input data as key of key board unit, so, just do not need to distribute to the indicating device I/O address.In addition, can also guarantee compatibility with original software.

From the following description, will carry out being clear and definite explanation in conjunction with the accompanying drawings to some other purpose of the present invention and characteristics:

Fig. 1 is the block scheme according to the data entry system of a scheme of the present invention;

Fig. 2 is the more detailed block diagram at a keyboard shown in Fig. 1;

Fig. 3 is the more detailed block diagram at an indicating device interface shown in Fig. 2;

Fig. 4 is a table of the count status of explaining a counter of being used for shown in Fig. 3;

Fig. 5 A to 5C is used for the time-base diagram of the counter works shown in the key drawing 3 respectively; With

Fig. 6 A to 6D is respectively some time-base diagrams, and expression is from the keyboard interface data of indicating device in the data processing equipment, and this equipment is used the non-definition key of key board unit, and wherein Fig. 6 A and Fig. 6 B represent Building X mark data, and Fig. 6 C and 6D represent Building Y mark data.

Fig. 1 is the block scheme according to the data entry system of a scheme of the present invention.With reference to Fig. 1, a data treatment facility 10 has a CPU (central processing unit), (CpU) 11 and keyboard interfaces 13, and interface 13 is received (CpU) 11 by bus 12.Equipment 10 is received key board unit 15 by a signal wire 14.Device 15 comprises: receive MpU16(by line 20 and below will describe in detail) the keyswitch 17 formed of key dot matrix; Microprocessor unit (marking) 16 with MpU, it is sent to keyboard interface 13 by line 14 handles from the key input data of switch 17 with from the data of installing 19; With an indicating device interface 18, it is used for interface between device 19 and the MpU16 by line 12 to MpU16.Equipment 19 comprises a cursor (MoUSE) or a tracking ball (Track ball) of receiving device 18 by line 22

Fig. 2 is the more detailed block diagram of key board unit shown in Figure 1.With reference to Fig. 2, reference symbol XA and XB are the Building X target pulses of being supplied with by device 19 respectively.When XA and XB addition then the Building X target value desirable-a value in 128≤X≤+ 128 scopes, same, reference symbol YA and YB represent two pulses of Building Y target of being supplied with by device 19.When YA and YB addition then the Building Y target value desirable-a value in 128≤Y≤+ 128 scopes.Pulse signal SW be one for selecting the selection signal of indicated that of present vernier.It is the zero setting signal that makes that zero setting of present vernier indication that pulse signal SW2 is one.

Fig. 3 is a more detailed block diagram of indicating device interface 18 shown in Figure 2, and interface 18 comprises: 8 of Building X marks just/reverse count device (X) 31; 8 of Building Y marks just/reverse count device (Y) 33; A latch circuit 35 is used for locking from the output of the counting of counter 31 and 33; One give counter 31 and 33 and latch circuit 35 provide timing signal timing generator 37; With a multiplexer 39 for selecting to mark data by the X and the Building Y of latch circuit 35 generations, counter 31 and 33 is counted the pulse that is come by indicating device according to count status shown in Figure 4.

With reference to Fig. 4, ↑ arrow represent pulse the forward position and ↓ arrow represents its back edge.Time-base diagram shown in count status as shown in Figure 4 and Fig. 5 B and the 5C, the state of forward counting is as described below:

1) be placed in low level as pulse A, forward counting behind pulse B along finishing.

2) be placed in low level as pulse B, forward counting is finished in pulse A forward position.

3) be placed in high level as pulse A, forward counting is finished in pulse B forward position.

4) be placed in high level as pulse B, forward counting is to finish on the back edge of pulse A.

The reverse count state of counter is as described below:

1) be placed in low level as pulse A, reverse count is to finish in the forward position of pulse B.

2) be placed in high level as pulse B, reverse count is to finish in the forward position of pulse A.

3) be placed in high level as pulse A, reverse count is to become entirely on the back edge of pulse B.

4) be placed in low level as pulse B, reverse count is to finish on the back edge of pulse A.

Fastened with a bolt or latch by latch circuit 35 from the count signal of counter 31 and 33 and to close, by latch circuit 35 the bolt the door X and the Building Y scale value of storage, along with timing signal by generator 37, be supplied to multiplexer 39.SXY and SHY signal that multiplexer 39 receives as control signal.The SHY signal makes multiplexer 39 select X or Building Y mark data.The SHL signal makes multiplexer 39 selection X or Building Y mark data last 4 or following 4, and multiplexer 39 produces corresponding Q ₀To Q ₃4 bit data.Fig. 6 A to 6D shows the form of output data, and wherein all " 1 " all

places

4, and 4 bit data of the Q to Q that multiplexer 39 is produced all place following 4.Fig. 6 A illustrates the last 4 bit data XA of Building X mark data (8), and Fig. 6 B illustrates the following 4 bit data XB of Building X mark data (8), and Fig. 6 C illustrates the last 4 bit data YA of Building Y mark data (8) and the following 4 bit data YB that Fig. 6 D illustrates Building Y mark number mark data (8).

MpU16 receives these data sequentially in the keyboard equipment 15, then, by the interface 13 of line 14 and device 10 these data is delivered to CpU11, and here, communication protocol (Communi Cation protocol) meets the RS232C standard.Per 4 bit codes shown in Fig. 6 A to 6D are given elder generation by the firmware decision from the order of transmission of MpU16 to CpU11, and as 4 bit data XA shown in Fig. 6 A to 6D, XB when YA and YB are invested non-definitions, has prepared 16 non-definitions.

The signal E that offers generator 37 is an enabling signal of counter 31 and 33, and signal HC makes counter 31 and 33 keep the count signal of counters 31 and 33 and the signal of their zero setting.

Work with data entry system of above-mentioned arrangement will be narrated afterwards.When a key on the key dot matrix 17 in the device 15 was pressed, MpU16 provided a corresponding key for interface 13 by line 14.Interface 13 is delivered to CpU bus 12 to key from MpU16.As a result, CpU11 obtains key from bus 12 and gives the processing of decision earlier from finishing.

On the other hand, from device 19 Building X mark pulse data XA and XB and Building Y mark pulse YA and YB supplied with respectively the Building X mark just/reverse count device 31 and Building Y mark just/reverse count device 33.Counter 31 and 33 is finished counting according to the count status of Fig. 4 and the time-base diagram of Fig. 5 A to 5D.Count signal from counter 31 and 33 is supplied to latch circuit 35.After every circuit 35 kept these count signals, along with the time signal of generator 37, these signals were provided for multiplexer 39.Multiplexer 39 provides X or Building Y mark in response to SHL and SXY signal to MpU16, goes up or 4 bit data down, and MpU16 obtains data and invests the non-definition key of keyboard according to data layout shown in Fig. 6 A to 6D from multiplexer 39 sequentially.From the data of indicating device 19, as supplying with interface 13 by the key that key obtained of investing a non-definitions for indication showing device input data.Interface 13 is given CpU bus 12 data that receive, and CpU11 obtains data from CpU bus 12, and this determines that received data are from installing 19, because last 4 are all put " I ".

Claims

1, an indicating device data entry system has one for specify the indicating device of a two-dimentional coordinate points on display screen; A key board unit, it has a key code generator for the key that produces each key that is equivalent to form the key dot matrix; Be connected to the data processing equipment of this key board unit with one by a keyboard interface, it is characterized in that having:

The interface arrangement of indicating device, this device is installed in the key board unit, be used for connecting aforesaid indicating device and aforesaid key board unit and

The generation key device of indicating device, this device is installed in the key board unit, be used for investing a non-definition key, and the input data are supplied to aforesaid data processing equipment as a definition key that comes from aforesaid key board unit to the data that enter in the aforesaid indicating device.

2, according to a system of claim 1, it is characterized in that the interface arrangement of aforesaid indicating device comprises:

Counter is used for to X and Building Y target step-by-step counting from aforesaid indicating device; With

A multiplexer is used for selecting item and position to select signal and produce corresponding coordinate data according to X and Building Y mark.

According to a system of claim 1, it is characterized in that 3, the key that offers aforesaid data processing equipment has a position, this represents key is obtained in the data of being come by aforesaid indicating device.