GB2215455A - Changeable input ratio mouse - Google Patents

Abstract

In a mouse 1 of the type which generates an output signal in reponse to movement over a surface in order to control the position of a cursor on the display screen of a computer, the ratio of mouse movement to cursor movement may be varied by means of manually operable switch means 2 coupled to digital processing circuitry which modifies the output signal level. Thus the normal cursor movement may be produced by smaller movement of the mouse and the reflective plate used with an optical sensor mouse may be made smaller. The mouse may be provided with other function keys 3 and an ordinate plate 12 which may be inserted into groove 11 in several orientations. <IMAGE>

Description

CHANGEABLE INPUT RATIO MOU5E The present invention relates to a changeable input ratio mouse which especially indicate a switch which is positioned at the mouse, the signal input ratio can be changed by variation of the related positions of the switch. When the mouse is slid a small distance the product under review is multiplied several times by the cursor of the screen in comparison with normal length. Therefore such effect is used to facilitate a reduction or decrease in area of a reflection plate which is part of the optical mouse, to achieve a lower manufacturing cost and to facilitate passing information to store.

In order to cater to the advance of high technology, the computer has become an essential piece of equipment in all professions, even the home computer has become very popular. The mouse has been regarded as the best method for computer input. By slight movement of the mouse, the distance, length, figure or position that you wish to input will be immediately displayed on the screen. However, the signal input ratio of all oonventional mice available in the market is constantly the same, for example if the ratio is 200 DPI (0.12mm/DOT), every displacement of 0.12mm of the mouse will give one DOT input signal to the main processing unit of the computer; to make a displacement of 12mm, the mouse will input a signal of 100 DOTS.

Assuming that the signal of 100 DOTS makes the cursor move a distance of Snim across the screen to make the cursor move a distance of 200mm, an operator should push the mouse by hand to move a distance of 480mm, it will not be easy to move the mouse for such a long distance.

Furthermore, if the mouse if of an optical type, signal transfer is made by means of the variation of light source produced by the movement of mouse in the reflector which should have a minimum size of. 480mm x 480mum, thereby increasing the cost and becoming inconvenient for storage.

The present invention is mainly to provide a switch for the selection of different input ratio so as to substantially overcome the above-mentioned shortcomings, wherein the input ratio can be multiplied up several times of the original input ratio as required, for example if the input ratio is increased by 6 times, in the before said case, the mouse needs to be moved for only 80mum; the size of the reflector can therefore be reduced 1/36 to save the material and to be convenient for use.

embodiments of changeable input ratio mouse according to the present invention will now be described by way of example, with reference to the drawings, in which : Fig. 1 shows the application of a flow chart to the mouse of the present invention.

Fig. 2 is a perspective view of a preferred embodiment of a mouse according to the present invention.

Fig. 3 is a schematic diagram of electrical circuiting of the preferred embodiment of the mouse of Fig. 2.

Referring to Fig. 1, the outer part of a dotted line is the flow chart of a conventional mouse, when the power source is established, normal transfer speed (e.g ratio of signal transfer) has been set, then the program start to justify situation and read the slide direction and istance of the mouse, the said part is related to the conventional mouse that is regardless to the present invention within the description in this item.

Referring to Fig. 2 an accelerating switch for the changeable transfer ratio is equipped at the embodiment 1, three other function keys 3 are of conventional design. In Fig. 3 showing the circuit diagram of the present invention, there is a BU comprising type 8048 integrated circuit and two acceleration switches are connected to it, thus to enable selection of three different types of functions of acceleration transfer ratio, the mouse slide to create X and Y assembly singals will be input from the output/input port #1, the dotted signals which transfer to CPU will be output from P27 base of cutput/input port *2, two acceleration switches 2 are connected separately to the base of P13, P14 of the output/input port il when two switches have not yet been started, P13 and P14will receive high potential (logic signal "1") and in the opposite state will receive low potential (Logic signal "O") .

TABLE CHECKTURBO: MOV A,R4 JZ READTURBO DEC R4 JMP DO OUT READTURBO: IN A,Pl ANL A,#00011000B XRL A,#00011000B JZ TURBOEXIT RL A SWAP A ORL A,*INDEX MOVP A,eA MOV R4,A TURBO EXIT: JMP MAIN LOOP INDEX.

BYTE 2 BYTE 4 BYTE 6 This table sets out the application assembly language program for the present invention coordinate with the range within dotted line of the flow chart for Fig. l,and illustrates the signal proceeded action for the present invention, the program will be reviewed firstly see whether the transfer ratio has been revised to accelerated sitution: MOV A,R4 enable the data buffering of the register R4 to transfer to accumulator A.

'I" JZ READTURBO If the accumulator A appears 0, showing that it is not in an accelerated situation then read directly the accelerated switch situation.

Se DEC R4 If the accumulator A is not 0, showing that it is in an accelerated situation that subtract 1 from the transfer data in the register R4.

JMP DO OUT Repeat to execute the transfer signals program.

Precedures of read accelerated switch are as follows: IN A,P1 Read the 8 bits signals from the output/input port &num;1 store into the accumulator A.

ANL A,#OOOlIOOOB If the signals are created from the accelerated switch much connect to the 4th and 5th bit of the 8 bits in the output/input port #1 (the base of 8 bits P10-P17 are shown as Fig. 3 ), thus arrange a 4th, 5th bit equal to "1" the other bits equal to "O", the accumulator A execute to add operation (AND) enable the values of unnecessary bit to delete and become "O" only the values of 4th, 5th remain unchange.

XRL A,#00011000B Repeat to use a 4th, 5th bit equal to 1 the other bits equal to "O" also repel or execute with the accumulator A each other, if the accelerated switches are started then the values of the 4th, Sthbits read initially "0" (Please refer to Fig. 3), but after repel or execute the value will become "1" and the other bit will be equal to "0", JZ TURBOEXIT If all the values of each bit equal "0" after repelling or executing operation that means the accelerated switches have not been started and execute directly to terminate the accelerated transfer program.

RL A Enable the data of the accumulator revolve left a bit, thus the signals of the accelerated switch will revolve to 4th and 6th bits from original 4th and 5th bit respectively.

SWAP A Enable the switch signals turn to 1st, 2nd bits from 5th and 6th bits.

ORL A,#INDEX According to the present situation of the switch signals (Which is "1"? or both are "1"?) to count the address of the referred schedule.

MOVP A, A The data information from the counted address will be stored into the accumulator A (e.g. both switches are active and equal to "1", then the stored data "6" in the address of referred schedule will be stored nto it, only a dotted signal is transfered from the original now become to transfer 6 dotted signals, it means the transfer ratio has become 6 timeS higher than the original ratio.) MOV R4,A The data of the accumulator A will be stored into the register R4.

Program for terminate the accelerated transfer: JMP MAIN LOOP Back to the main program In the present example, the data from the address of the relative schedule are: BYTE 2 the first switch is active BYTE 4 the second switch is active BYTE 6 both switches are active Please refer to Fig. 2 a trapezoid groove 11 with a ordinate plate 12 is inserted into it is positioned nearby the bottom of the preferred embodiment 1 to the present invention, the ordinate plate 12 is a draft ordinate 121 with different convex shape to coordinate different input drawing from the mouse, the different shaped convex ordinate plate 121 can be selected and inserted into the groove 11, the draft ordinate plate 12 is combined with the mouse itself to achieve the patterns of drawing from different convex ordinate 121.

In accordance with the said procedures, the ratio of signal transfer will be change in accelerating to perform said advantage.

In the preferred embodiment, we use 8048 microprocessor as CPU, certainly other series no. of CPU adapted are inclusive for the present invention.

nJrtbermOre the curve-following merger 12 may be used with "mice" whose input ratio (i.e. the ratio of movement of the mouse to mv#ernent of a cursor on a display screen) is fixed.

Claims (5)

CIAIMS :

1) A "mouse" for generating an output signal in response to movement of the mouse over a surface, the output signal being suitable for controlling the postion of a cursor on a display screen, the morse incorporating digital signal processing circuitry for generating said output signal and manually operable switch means coupled to said digital processing circuitry and arranged to condition for signal processing whereby in use, the ratio between movement of the mouse and movement of a cursor on a screen may be varied.

2) A Changeable input ratio mouse which is specified to coordinate internal application software software program and CPU circuit, when action is set to be controlled by a few number of specified switches on a mouse to enable change and to select the moving distance of the mouse to affect the ratio of signal quantities which transfer to the CPU computer.

3) A mouse as claimed in Claim 2, wherein another character of a separative with different convex shapes of draft ordinate plates, eadh ordinate plate being insertable into the trape#oid groove of the mouse to enable the ordinate plate to be combined with the embodiment of mouse.

4) A "mouse" as claimed in Claim 1 or Claim 2 wherein a curvefollowing member is adjustably mounted on the. body of the mouse sudh that the outline of said member at a predetermined position with respect to said body may be varied.

5) A "mouse" substantially as hereinbefore described with reference to, the accoirpanying drawings.