CN103176739A - Method for realizing handwriting calculator function and mobile terminal thereof - Google Patents

Abstract

The invention discloses a method for realizing the function of a handwriting calculator, which is suitable for a mobile terminal, wherein the mobile terminal comprises an ultrasonic receiving device, and the method comprises the following steps: (1) analyzing according to the received ultrasonic signal to obtain an input character; (2) judging whether the input characters are numbers or mathematical symbols; (3) if yes, recording the input characters to the operation formula and executing the step (4), otherwise, prompting input invalidity and displaying a jump link of network search; (4) judging whether the input characters are equal signs or not, if so, executing the step (5), otherwise, repeating the step (1) to the step (4); (5) and calculating the operation formula and displaying the calculation result. By the method and the device, the quick handwriting input of the calculation formula is realized, and the operation efficiency and the user experience are improved. The invention also provides a mobile terminal with the function of the handwriting calculator.

Description

Method for realizing handwriting calculator function and mobile terminal thereof

technical field

The present invention relates to the technical field of mobile terminals, and more particularly relates to a method for realizing the function of a handwriting calculator and a mobile terminal thereof.

Background technique

With the development of mobile terminal technology, traditional calculator functions have been widely integrated into various mobile terminals. Users only need to carry a mobile terminal to enjoy the convenient applications brought by the two electronic devices, the mobile terminal and the calculator.

At present, the calculator function integrated in the mobile terminal is mainly operated by means of virtual keyboard, physical keyboard, virtual keys in the calculator interface, and handwriting input with a touch pen. However, due to the limitation of the size of the mobile terminal screen and the physical keyboard of the mobile terminal, the calculator operating area provided by the prior art is very limited, which is not convenient for fast input of calculation formulas to achieve efficient calculation. At the same time, users who are accustomed to using paper and pen to write or need to use paper and pen to record the calculation process will have to alternately write and operate the calculator, which greatly reduces the operating efficiency and user experience. .

Therefore, it is necessary to provide a method for realizing the function of a handwriting calculator and its mobile terminal to overcome the above-mentioned defects.

Contents of the invention

The purpose of the present invention is to provide a method for realizing the functions of a handwriting calculator, which facilitates fast input of calculation formulas and improves operation efficiency and user experience.

Another object of the present invention is to provide a mobile terminal with a handwriting calculator function, which facilitates fast input of calculation formulas and improves operation efficiency and user experience.

In order to achieve the above object, the present invention provides a method for realizing the function of a handwriting calculator, which is suitable for a mobile terminal, the mobile terminal includes an ultrasonic receiving device, and the method includes the following steps:

(1) Analyze the input characters according to the received ultrasonic signal;

(2) judging whether the input characters are numbers or mathematical symbols;

(3) If yes, record and add the input characters to the calculation formula, otherwise, prompt that the input is invalid and display the jump link of the network search;

(4) Determine whether the input character is an equal sign, if so, perform step (5), otherwise, repeat the step (1) to the step (4);

(5) Calculate the calculation formula and display the calculation result.

Compared with the prior art, the present invention first analyzes and obtains the input character according to the received ultrasonic signal, then judges whether the input character is a number or a mathematical symbol, and then records the input character into the calculation formula according to the judgment result, and then judges whether the input character is a number or a mathematical symbol. The input character is an equal sign, and finally calculates the calculation formula according to the judgment result and displays the calculation result, which realizes the fast handwriting input of the calculation formula and improves the operation efficiency and user experience.

Preferably, the step (2) is specifically:

It is judged whether the input character is a number, an operation symbol, an equal sign and a decimal point.

Preferably, before the step (1), it also includes:

When the ultrasonic signal is detected, it is judged whether the calculator function is turned on, and if so, the step (1) is executed; otherwise, options are provided for the user to choose whether to turn on the calculator function.

Correspondingly, the present invention also provides a mobile terminal with the function of a handwriting calculator, including a body and an ultrasonic receiving device arranged on the body, and the body includes:

An analysis module is used to analyze and obtain input characters according to the received ultrasonic signal;

The first judging module is used to judge whether the input characters are numbers or mathematical symbols;

A recording module, configured to record the input characters into the calculation formula according to the judgment result of the first judgment module;

The first prompting module is used to prompt that the input is invalid according to the judgment result of the first judging module and display the jump link of the network search;

The second judging module is used to judge whether the input character is an equal sign;

A calculation module, used to calculate the calculation formula and display the calculation result.

Preferably, the mobile terminal further includes:

The third judging module is used to judge whether the calculator function is turned on when the ultrasonic signal is detected;

The second prompting module is configured to provide options for the user to choose whether to enable the computing function according to the judgment result of the second judging module.

The present invention will become clearer through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention.

Description of drawings

FIG. 1 is a flowchart of an embodiment of the method for realizing the function of a handwriting calculator according to the present invention.

FIG. 2 is a schematic structural diagram of an embodiment of a mobile terminal with a handwriting calculator function according to the present invention.

FIG. 3 is a structural block diagram of the mobile terminal body in FIG. 2 .

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

With reference to Fig. 1, the method for realizing handwriting calculator function of the present invention, comprises the steps:

Step S101, when the ultrasonic signal is detected, it is judged whether the calculator function is turned on, if so, step S102 is executed, otherwise, step S103 is executed to provide options for the user to choose whether to turn on the calculator function; specifically, the mobile terminal will Monitor the input of the ultrasonic signal in real time, and when the input of the ultrasonic signal is detected, an event to judge whether the calculator function is opened is triggered; those skilled in the art should know that the calculation function can also be set to an automatic open state; as : When the ultrasonic signal is detected, it is judged that the calculation function has not started, so two options "Yes" and "No" are displayed for the user to choose whether to enable the calculation function, and the user selects "Yes", and then the calculation function is activated;

Step S102, analyze and obtain the input characters according to the received ultrasonic signal; specifically, first receive the ultrasonic signal sent by the ultrasonic pen when writing through the three ultrasonic sensors on the mobile terminal, and then receive the input character according to the three ultrasonic sensors. The position of the ultrasonic pen is calculated based on the time delay of the ultrasonic signal, when the ultrasonic pen moves, the position of the ultrasonic pen can be continuously recorded to obtain the writing track, and then the operation item can be obtained by analyzing the writing track It is worth noting that the position of the ultrasonic pen should be within the receiving range of the ultrasonic sensor during input; for example, "+", "1", "+", "" are written on the paper in sequence using the ultrasonic pen 2", ".", "3" and "=", so the input characters "+", "1", "+", "2", ".", " are analyzed according to the ultrasonic signal sent by the ultrasonic pen when writing 3" and "="; Another example: use the ultrasonic pen to write "+", "4", "+", "*", "2" and "=" in sequence on the paper, so write according to the ultrasonic pen The ultrasonic signal sent out at the time is analyzed to obtain the input characters "+", "4", "+", "*", "2" and "="; another example: use an ultrasonic pen to write "a" on the paper, Then, the input character "a" is obtained by analyzing the ultrasonic signal sent out when writing with the ultrasonic pen;

Step S104, determine whether the input character is an Arabic numeral, an operation symbol, an equal sign or a decimal point, if so, execute step S105, otherwise, execute step S106; as: because the operation item "+" is an operation symbol, then execute step S104 S105; another example: because the input character "1" is a number, then execute step S105; another example: because the input character "2" is a number, then execute step S105; another example: because the input character "." is a decimal point, then execute Step S105; another example: because the input character "3" is a number, then step S105 is executed; another example: because the input character "=" is an equal sign, then step S105 is executed; another example: because the input character "a" is an English letter , then execute step S106;

Step S105, record the input characters into the calculation formula and execute step S107; the initial value of the calculation formula is empty; for example: record the input characters "+", "1", "+", "2", "." , "3" and "=" to the calculation formula, to get the calculation formula "+1+2.3="; another example: record the input characters "4", "+", "*", "2" and "=" to Computational formula, get the formula "4+*2=";

Step S106, prompting that the input is invalid and displaying the jump link of the network search;

Step S107, determine whether the input character is an equal sign, if so, then execute step S108, otherwise, repeat the step S102 to the step S107; such as: the input character is "+", then repeat the steps S102 to S107 The step S107; another example: the input character is "=", then execute the step S108;

Step S108, calculating the calculation formula and displaying the calculation result. Those skilled in the art should be clear that the operation symbols in front of the numerical operation items in the calculation formula will be ignored during calculation, and when there are multiple operation symbols between the two numerical operation items, only the operation symbol with the highest priority is used to participate in the calculation; It should also be clear to those skilled in the art that the calculation formula will be reset to empty after the calculation is completed. For example: the calculation formula "+1+2.3="gets the calculation result "3.3", then displays the calculation result "3.3"; another example: the calculation formula "4+*2="gets the calculation result "8", then displays the calculation The result is "8".

With reference to Fig. 2, the mobile terminal 100 with handwriting calculator function of the present invention comprises body 10 and the ultrasonic receiving device 20 that is arranged on described main body 10, and described ultrasonic receiving device 20 comprises the sensor 201 that can sense ultrasonic wave, sensor 202 and sensor 203.

Referring to Figure 3, the body 10 includes:

The third judging module 101 is used to judge whether the calculator function is turned on when the ultrasonic signal is detected;

The second prompt module 102 is used to provide options for the user to choose whether to enable the calculation function according to the judgment result of the second judgment module 101;

Analyzing module 103, for obtaining the input character according to the judging result of the third judging module 101 and the received ultrasonic signal analysis;

The first judging module 104 is used to judge whether the input character is a number or a mathematical symbol; the mathematical symbol includes an operation symbol, an equal sign and a decimal point;

A recording module 105, configured to record the input characters to the calculation formula according to the judgment result of the first judgment module 104;

The first prompting module 106 is used to prompt that the input is invalid according to the judgment result of the first judging module 104 and display a jump link of the network search;

The second judging module 107 is used to judge whether the input character is an equal sign according to the judging result of the first judging module 104;

The calculation module 108 is configured to calculate the calculation formula according to the judgment result of the second judgment module 107 and display the calculation result.

According to the above description, the present invention first analyzes and obtains the input characters according to the received ultrasonic signal through the analysis module 103, then judges whether the input characters are numbers or mathematical symbols through the first judging module 104, and then records the input characters to the calculation formula through the recording module 105 , then judge whether the input character is an equal sign by the second judging module 107, finally calculate the computing formula according to the judging result and display the computing result by the computing module 108, realize the fast handwriting input of computing formula and improve the operating efficiency and user experience.

The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the above-disclosed embodiments, but should cover various modifications and equivalent combinations made according to the essence of the present invention.

Claims (5)

1. a method that realizes hand-written calculator function, be applicable to mobile terminal, and described mobile terminal comprises ultrasonic probe, ultrasonic receiver, it is characterized in that, described method comprises the steps:

(1) obtain input character according to the ultrasonic signal parsing that receives;

(2) judge whether described input character is numeral or mathematic sign;

(3) if records and add described input character to arithmetic expression, otherwise the redirect link of invalid and display network search is inputted in prompting;

(4) judge whether described input character is equal sign, if, execution in step (5), otherwise, repeating said steps (1);

(5) calculate described arithmetic expression and show result of calculation.

2. the method that realizes hand-written calculator function as claimed in claim 1, is characterized in that, described step (2) is specially:

Judge whether described input character is numeral, sign of operation, equal sign and radix point.

3. the method that realizes hand-written calculator function as claimed in claim 1, is characterized in that, also comprises before in described step (1):

Judge when described ultrasonic signal being detected whether calculator function is opened, if, carry out described step (1), otherwise, provide options to select whether to open described computing function for the user.

4. the mobile terminal with hand-written calculator function, comprise body and the ultrasonic probe, ultrasonic receiver that is arranged on described body, it is characterized in that, described body comprises:

Parsing module is used for obtaining input character according to the ultrasonic signal parsing that receives;

The first judge module is used for judging whether described input character is numeral or mathematic sign;

Logging modle is used for recording described input character to arithmetic expression according to the judged result of described the first judge module;

The first reminding module is used for the redirect link that judged result prompting input is invalid and display network is searched for according to described the first judge module;

The second judge module is used for judging whether described input character is equal sign;

Computing module is used for calculating described arithmetic expression and showing operation result.

5. the mobile terminal with hand-written calculator function as claimed in claim 4, is characterized in that, also comprises:

The 3rd judge module is used for judging when ultrasonic signal being detected whether calculator function is opened;

The second reminding module is used for providing options to select whether to open described computing function for the user according to the judged result of described the second judge module.

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