TW530252B - Method for deleting keyboard error input - Google Patents

Abstract

The present invention is a method for deleting keyboard error input. A memory is installed on a circuit of a wireless keyboard to allow a microprocessor of the keyboard to start scanning result accumulation by way of 'OR' computation from the first row of the array while carrying out array scanning of the keyboard and write the result into the memory. At the same time, the microprocessor also compare the scanning result of each row with the scanning results stored in the memory by way of 'AND' computation. If the comparison result is not '0', an input error message will be transmitted to a wireless receiver of a computer for a central processing unit (CPU) of the computer to read the error message and determine the input as an error before giving warnings. Thus, any error input caused when the user presses any three keys simultaneously in the same rectangular array on a keyboard can be prevented.

Description

530252 V. Description of the invention α) Background of the invention: The present invention is a method for eliminating keyboard incorrect input. It is provided with a memory on a circuit of a wireless keyboard, and a microprocessor of the keyboard performs an array scan of the keyboard. At that time, the scan result from the first row of the array is calculated one after the other by the (OR) calculation method, written into the memory, and the scan results of each row and (and ) The calculation method is compared with the results of the scanheads stored in the memory. If the comparison result is not zero, an input error message is sent to an uncast receiver on a computer, so that the computer One central processing unit does not perform any input processing.

Previous skills: Press, the general traditional wireless keyboard, please refer to the first picture, there are a plurality of buttons arranged in a matrix, a switch 1 1 is arranged below these buttons, and these switches 1 1 correspond to an input code When the user presses the buttons and short-circuits the switches 1 1, one of the microprocessors of the keyboard will scan the input code 5 of the pressed button in a scanning manner and transmit the input codes. To a wireless receiver of a computer, so that a central processing unit of the computer reads the input code and decodes the input code into a font (or: symbol), so as to achieve the purpose of inputting the font (or: symbol).

Please refer to the first figure again. The conventional keyboard scanning method of the microprocessor 'is to conduct current through the columns L 1 and L 2 in the rows of the matrix' and the rows R 1 and R 2 Detect the current flowing due to the short circuit of these switches 1 1, for example: when a button SW 1 is touched, the switch 1 1 of the button SW 1 will be shorted,

Page 4 530252 V. Description of the invention (2) The current on column L 1 can flow to the row R 1 through the switch 1 1 of the button SW 1 and the microprocessor detects that the button SW 1 is Touch the pressure, so you can go to a database to read the relevant input code corresponding to the button SW 1. However, when three buttons SW1, SW2, and SW4 in the same rectangular array are pressed at the same time, the current on column L 2 1 3 will be detected on the R 2 line through the button SW 4 and SW 2 in sequence, and the current 1 3 will also be detected on the R 1 line through the button SW 1, causing the micro processing. The device misrecognition button SW 3 was also pressed, and an erroneous input was generated. Outline of invention:

In view of this, in order to improve the above-mentioned lack of incorrect input, the inventor finally developed and devised a method to eliminate keyboard incorrect input after long-term research and experiment.

An object of the present invention is to provide a method for eliminating keyboard incorrect input. A wireless keyboard is provided with a memory. When a microprocessor of the keyboard performs an array scan of the keyboard, it starts to sequentially Cumulative scan results are calculated from the first column of the array one by one in the (OR) calculation method, written into the memory, and the scan results of each column and (and) the nose counting method are used. The scanning results stored in the memory are compared. If the comparison result is not zero, an input error message is sent to a wireless receiver of a computer, so that a central processing unit of the computer reads the result. Take the error message and determine that the input is an error, and then perform a warning process. In this way, you can avoid the wrong input caused by the user simultaneously pressing three of the buttons of the same rectangular array of the keyboard.

Page 5 530252 V. Description of the invention (3) In order that the review committee can further understand and understand the purpose, shape, structural device features and functions of the present invention, the embodiments are illustrated with illustrations, and are described in detail below. : Detailed description:

The invention is a "method for eliminating keyboard incorrect input", which is provided with a memory on a circuit of a wireless keyboard. When a microprocessor of the keyboard performs an array scan of the keyboard, the array is sequentially started by the array. The first row in the row is cumulatively scanned with the or (0r) calculation method, and written into the memory, and the scan result and calculation method of each column are stored in the memory. The stored scan results are compared. If the comparison result is not zero, an input error message is sent to a wireless receiver of a computer, and a central processing unit (CPU) of the computer reads the An error message, and the input is judged to be an error, and a warning is processed. In the present invention, please refer to the second figure. The keyboard is respectively provided with a first memory and a second memory. When the keyboard is turned on and used, its microprocessor will process according to the following steps: (101 ) First, set a flag n = 1; (1 0 2) read the scan result of the nth column in the keyboard array;

(103) and (a n d) are calculated by comparing the scanning result of the n column with the accumulated scanning result in the second memory. If yes, continue with the following steps; otherwise, output an input error message to the

Page 6 530252 V. Description of the invention (4) The wireless reception of the brain, and judge the bundle; (104) Yes, proceed to step (105) into the steps of the first record (106) (107); (108) send To the computer, the result of literacy (109) 嗣, end; (110) enter the second register, so that the central processing unit of the computer reads the error and indicates that the input is an error, and then performs a warning processing, 嗣Then, judge whether there are more than one button pressed in the η column? If step (1 1 0); otherwise, continue with the following steps; carry out the cumulative scanning result in the calculation method of or (〇r), and write it in the memory; add 1 (η + 1) to the flag η; judge the Is the flag η equal to 1 7? If yes, continue to No. 1J, and proceed to step (102); transfer the scanning results stored in the first and second memories to the wireless receiver, so that the computer The central processing unit performs relevant input processing according to the basis; clears the scan results stored in the first and second memories, calculates the cumulative scan results in a calculation manner, and writes (or in the memory; 111 to continue) The wireless information of the computer, and the judgment and calculation method, compare the scanning result of the n column with the accumulated scanning result in the first memory is equal to zero? If yes, step (106); otherwise Output an input error message to the receiver, so that the central processing unit of the computer reads the error and breaks the input as an error, and then performs a warning processing, 嗣, end. In the present invention, the flag η is at most up to 1 7 because of general keyboard array

Page 7 530252 5. The general number of columns in the description of invention (5) is 17 columns, but the actual implementation of the present invention is not limited to this number. In the present invention, the scanning mode of the microprocessor is to conduct current in each column in the rows of the matrix arrangement, and detect the current flowing in each row. If a button in a certain column is touched, the corresponding When the switch in the column of the button is short-circuited, the microprocessor will be able to detect one of the H i gh potentials in the current flowing on the corresponding row, for example: the second, fifth, and sixth rows in a row. When the button is pressed, the microprocessor can detect a L 0w, H igh, L 0w, L 0w " High, High, L0w, L0w, L0w " ···Equipotential. In the present invention, the OR calculation method uses the L ow potential as 0 and the H igh potential as 1, and as long as there is a 1 in the OR calculation, a 1 is obtained, that is, 0 〇 1 is a 1 , 1 〇r 0 gets a 1, 1 or 1 gets a 1, 0 〇r 0 gets a 0, or this calculation method, the scan results of the previously scanned ranks can be accumulated one by one. One or two memories. In the present invention, the calculation method of the sum takes the potential of L 0w as 0, and the potential of H igh as 1, and as long as there is a 0 in the calculation, a 0 is obtained, that is, 0 and 1 is a 0. , 1 and 0 get a 0, 0 and 0 get a 0, and 10r 1 gets a 1. In the present invention, in order to avoid the scanning result of the first scanning in the first and second memories during the second scanning of the microprocessor, the scanning result must be cleared after completing one scanning of the cat. Scan results stored in the first and second memory0

530252 V. Description of the invention (6) In this way, the wrong input can be avoided because the user simultaneously presses three of the buttons in the same rectangular array of the keyboard. The above description is only the best embodiment of the present invention, but the structural features of the present invention are not limited to this. Any person skilled in the art can easily think of changes or modifications in the field of the present invention. The scope of patents in the following case.

Page 9 530252 Brief description of the drawings Illustration: The first diagram is a schematic diagram of a circuit in which three buttons of the same rectangular array are pressed. The second figure is a flowchart of the present invention.

Claims (1)

530252 6. Scope of patent application 1. A method for eliminating keyboard incorrect input, which is provided with a memory on a circuit of a wireless keyboard. When one of the keyboard's microprocessors performs an array scan of the keyboard, it will start one by one. Cumulative scan results are calculated from the first column of the array one by one in the (OR) calculation method, written into the memory, and the scan results of each column and the (and) calculation method are combined with the The scan results stored in the memory are compared. If the comparison result is not zero, an input error message is sent to a wireless receiver of a computer, and a central processing unit of the computer reads the An error message, and the input is judged to be an error, and a warning is processed. 2. The method for eliminating keyboard incorrect input as described in item 1 of the scope of patent application, wherein the keyboard is provided with a first memory and a second memory, respectively. When the keyboard is opened for use, its microprocessor will read Take the scan result of a certain row in the keyboard array, and then, and (and) the calculation method, compare the scan result of that certain row with the accumulated scan result in the second memory. If it is not equal to zero, then An input error message is output to the wireless receiver of the computer, so that the central processing unit of the computer reads the error message, determines that the input is an error, and does not perform any input processing. 3. The method for eliminating keyboard incorrect input as described in item 2 of the scope of patent application, wherein when the microprocessor judges that there are more than one button pressed in a certain row, the calculation is performed in the form of (OR). The scan results are accumulated and written into the second memory. 4. The method for eliminating keyboard incorrect input as described in item 3 of the scope of patent application, wherein when the microprocessor judges that there are not more than one button pressed in a certain column, it is calculated in the form of (or). Cumulative scan results, 111 draw circle III 11 1 1 1 · draw ___ circle 闘 page 11 530252 6. Apply for a patent and write it into the first memory. 5. The method for eliminating keyboard incorrect input as described in item 4 of the scope of the patent application, wherein the microprocessor and the (and) calculation method compare the scan result of a certain column with the cumulative result in the first memory. If the scan result is not equal to zero, an input error message is output to the wireless receiver of the computer, so that the central processing unit of the computer reads the error message, and determines that the input is an error, and does not perform any input processing. 6. The method for eliminating keyboard incorrect input as described in item 5 of the scope of patent application, wherein the microprocessor and (and) calculation method compare the scan result of a certain column with the first and second memories. If the accumulated scanning results are all equal to zero, the scanning results stored in the first and second memories are transmitted to the wireless receiver of the computer, so that the central processing unit of the computer performs the scanning results based on the scanning results. Related input processing. 7. The method for eliminating keyboard incorrect input as described in item 6 of the scope of patent application, wherein the microprocessor clears the scan results stored in the first and second memories after completing a scan. ’ Page 12