CN115344837A - Password input device - Google Patents

Abstract

The invention mainly discloses a password input device which is applied to an electronic device and comprises a password input unit, a position detection unit, a micro control chip, a storage unit and a prompt unit. The micro control chip is provided with an arithmetic unit for realizing a password input program special for the blind. It is worth to be noted that, in the case of using the password input device of the present invention by a visually impaired person, the password input program for the blind person causes the arithmetic unit to perform a first process on a current displacement value by a default distance value, thereby causing the prompt unit to issue a prompt signal according to a result of the first process and simultaneously update a current value. By the method, the ordinary users and the vision-impaired users have the advantages of high safety and convenience when inputting the password by using the password input equipment.

Description

Password input device

Technical Field

The invention relates to the technical field of password input, in particular to a password input device suitable for people with impaired vision.

Background

With the progress of science and technology, various touch screens and touch devices are proposed to improve the convenience and efficiency of people's life; in contrast, the conventional physical key type password input device is gradually eliminated by society. However, a visually impaired user typically determines the value represented by each physical key by touching the embossed dots on the physical keys. It is conceivable that the difficulty of inputting a password by a visually impaired user is greatly improved after the entity key type input device is eliminated.

A password input device suitable for the visually impaired has been proposed. When a key of the existing password input device is pressed by a user, the password input device emits a voice corresponding to the key so that a person with impaired vision can know the value of each key. It is easy to understand that the visually impaired must press each key of the existing password input device one by one while recording each key and its corresponding number and position. In addition, in the case where the visually impaired person inputs the password, the inputted password is easily stolen by other people around the person. To summarize, existing password input devices have the disadvantages of being time consuming, inconvenient, and low security.

As can be seen from the above description, the existing password input device still has room for improvement for the visually impaired. Accordingly, the present invention has been made in an effort to develop and create a password input device.

Disclosure of Invention

The present invention provides a password input device, which is applied to an electronic device and includes a password input unit, a position detection unit, a micro control chip, a storage unit and a prompt unit. The micro control chip is provided with an arithmetic unit for realizing a password input program special for the blind. It is worth to be noted that, in the case of using the password input device of the present invention by a visually impaired person, the password input program for the blind person causes the arithmetic unit to perform a first process on a current displacement value by a default distance value, thereby causing the prompt unit to issue a prompt signal according to a result of the first process and simultaneously update a current value. By the method, the ordinary users and the vision-impaired people have the advantages of high safety and convenience when inputting the password by using the password input equipment.

In order to achieve the above object, the present invention provides an embodiment of the password input device, which is applied in an electronic device and includes a password input unit, a position detection unit, a micro control chip, a storage unit and a prompt unit; the micro control chip is provided with an arithmetic unit for realizing a password input program special for the blind, and the password input program special for the blind comprises the following steps:

(1) Under the condition that a finger performs password typing on the password input unit, the password input unit receives a trigger position, a current position and a current moving direction of the finger;

(2) Enabling the position detection unit to provide a current displacement value and a current direction vector according to the trigger position, the current position and the current moving direction;

(3) The arithmetic unit executes a first processing to the current displacement value by a default distance value, so that the prompting unit sends a prompting signal according to the result of the first processing and updates a current value;

(4) Detecting whether the current position of the finger stops changing or not by using the position detection unit; if yes, executing the step (5); if not, repeating the step (3);

(5) Detecting whether the finger touches the password input unit under two conditions by using the position detection unit, if so, executing the step (7); if not, executing the step (6)

(6) Detecting whether the finger touches a confirmation key or a cancel key by using the position detection unit, if so, playing a confirmation signal and repeatedly executing the step (1); if the cancel key is touched, a cancel signal is played, and the step (1) is repeatedly executed; if not, repeating the step (1);

(7) Detecting whether the current value has been updated by using the operation unit, if yes, recording the current value into a password sequence, and repeatedly executing the step (1); if not, then executing step (8);

(8) The micro-control chip outputs the password sequence.

In an embodiment, the steps (3) and (4) further include the following steps:

(31) The arithmetic unit executes the first processing to the current displacement value according to the default distance value, so that the prompting unit sends out a prompting message according to the result of the first processing and updates a current value; the first processing is that the current displacement value is divided by a preset distance value to obtain a quotient value;

(32) When the quotient value is equal to one, the arithmetic unit takes a first value as the current value, and the prompting unit sends out the prompting signal and then executes the step (41);

(41) Detecting whether the current position of the finger stops changing by using the position detecting unit; if yes, then executing step (5) after recording the current value as the password sequence; if not, executing step (33);

(33) The arithmetic unit executes the first processing to a variation displacement value by the default distance value, thereby obtaining a variation quotient value of the variation displacement value divided by the preset distance value;

(34) Making the arithmetic unit execute a second processing to a variation direction vector by the direction vector of a previous action; the second processing is to inner-product the direction vector of the previous action with the variation direction vector to obtain an inner product value;

(35) Making the arithmetic unit judge whether the change quotient value is equal to or greater than one, if yes, executing step (36); if not, repeating the step (1);

(36) Under the condition that the variation quotient value is equal to one, the operation unit is used for judging whether the inner product value is larger than or equal to zero; if yes, the arithmetic unit moves the current value forward by a numerical value according to a preset numerical value table, and simultaneously the prompting unit sends a prompting signal; if not, the arithmetic unit is enabled to move the value of the current value backwards according to the preset value table, and meanwhile, the prompt unit is enabled to send a prompt signal; step (41) is then repeated.

In a possible embodiment, the electronic device is any one of the following: smart phones, tablet computers, smart watches, access devices, and payment devices.

In a possible embodiment, the password input unit may be any one of the following: the touch screen, the liquid crystal screen are matched with a mouse, an infrared touch screen and a large-scale touch billboard.

Drawings

FIG. 1 shows a perspective view of a password input device of the present invention;

FIG. 2 is a block diagram of a password input device of the present invention;

FIG. 3 shows a first flowchart of a blind person-specific password entry routine of the present invention;

FIG. 4 shows a second flowchart of the blind-specific password entry routine of the present invention;

FIG. 5 shows a third flowchart of the blind person specific password input procedure of the present invention;

FIG. 6 is a fourth flowchart of the blind person-specific password input program of the present invention;

FIG. 7 shows a fifth flowchart of the blind-specific password input program of the present invention;

FIG. 8 shows a sixth flowchart of the blind person specific password input program of the present invention; and

fig. 9 shows a seventh flowchart of the blind person-specific password input program of the present invention.

The main symbols in the figures illustrate:

1: password input device

2: electronic device

11: password input unit

12: position detecting unit

13: micro-control chip

14: storage unit

15: prompting unit

131: arithmetic unit

S1 to S8: step (ii) of

S41: step (ii) of

S31 to S36: step (ii) of

S71 to S73: step (ii) of

Detailed Description

In order to more clearly describe the password input device of the present invention, the following description will be made in detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of a password input device of the present invention, and fig. 2 is a block diagram of the password input device of the present invention. As shown in fig. 1 and fig. 2, the password input apparatus 1 is applied in an electronic device 2, and includes: a password input unit 11, a position detection unit 12, a micro control chip 13, a storage unit 14 and a prompt unit 15. It should be noted that the micro control chip 13 has an arithmetic unit 131 for implementing a password input procedure specific to the blind. Please refer to FIG. 3, which shows a first flowchart of the password input procedure for the blind person according to the present invention. As shown in fig. 2 and fig. 3, the blind person-specific password input program first executes step S1, in which, when a finger performs a password key-in on the password input unit 11, the password input unit 11 receives a trigger position, a current position, and a current moving direction of the finger. As shown in fig. 1, in the present embodiment, the password input unit is a touch screen; it should be noted that the password input unit 11 is any one of the following: the touch screen, the liquid crystal screen are matched with a mouse, an infrared touch screen and a large-scale touch billboard. The electronic device 2 is any one of the following: smart phones, tablet computers, smart watches, access devices, and payment devices.

In the above, step S2 is then executed: the position detecting unit 12 provides a current displacement value and a current direction vector according to the trigger position, the current position and the current moving direction, and then step S3 is executed. In other words, when the user touches or operates the password input unit 11, the position detection unit 12 records the first point triggered by the user as the trigger position. Then, after the user moves the finger on the touch screen, the position detecting unit 12 records the distance and the direction of the finger movement as the current displacement value and the current direction vector, respectively. It should be noted that the operation unit 131 stores the trigger position, the current displacement value, and the current direction vector in the storage unit 14.

With continued reference to fig. 1-3; referring to fig. 4 and fig. 5, a second flowchart and a third flowchart of the password input procedure for the blind person according to the present invention are shown. Step S3 is executed after step S2 is completed; in step S3, the arithmetic unit 131 executes a first process on the current displacement value by using a default distance value, so as to enable the prompting unit 15 to issue a prompting signal according to the result of the first process, and update a current value. Then, step S4 is executed, and the step S4 is: detecting whether the current position of the finger stops changing by using the position detecting unit 12; if yes, executing step S5; if not, the step S3 is repeatedly executed. Continuing to describe the present invention, step S5 is: detecting whether the finger touches the password input unit 11 under two times by using the position detection unit 12, if so, executing step S7; if not, step S6 is executed.

With continuing reference to fig. 1-6 and with simultaneous reference to fig. 7 and 8, a fifth flowchart and a sixth flowchart of the blind-person specific password input procedure of the present invention are shown. Then, the technical features of the steps S6, S7 and S8 are explained, in step S6, the position detecting unit 12 is used for detecting whether the finger touches a confirmation key or a cancel key, if the finger touches the confirmation key, a confirmation signal is played, and the step S1 is repeatedly executed; if the cancel key is touched, a cancel signal is played, and the step S1 is repeatedly executed; if not, the step S1 is repeatedly executed. Then, in step S7, the operation unit 131 is used to detect whether the current value has been updated, if yes, the current value is recorded in a password sequence, and step S1 is repeatedly executed; if not, then step S8 is executed. Step S8 outputs the password sequence to the micro control chip 13. It should be noted that the enter key and the cancel key are keys displayed on a touch screen of the electronic device 2. In other words, in the embodiment, the confirm key and the cancel key are virtual keys displayed on the electronic device 2. In other words, after the micro control chip 13 outputs the password sequence, the user completes the password input procedure. Then, the process is carried out. Fig. 6 shows a fourth flowchart of the blind-person-specific password input program of the present invention. As shown in fig. 6 and 7, the steps S3 and S4 further include: step S31, step S32, step S33, step S34, step S35, step S36, and step S41. Next, in step S31, the arithmetic unit 131 executes the first processing on the current displacement value by using the default distance value, so as to enable the prompting unit 15 to issue a prompting signal according to the result of the first processing, and update a current value; the first process is to divide the current displacement value by a predetermined distance value to obtain a quotient.

With continued reference to fig. 2-6. Step S32 is executed after step S31 is completed; in step S32, if the quotient is equal to one, the operation unit 131 takes a first value as the current value, and the prompt unit 15 issues the prompt signal, and then step S41 is executed. More specifically, the first process adds the current displacement value to the preset distance value to obtain the quotient. And, if the quotient is equal to one, the computing unit 131 records a first value as the current value. That is, when the current displacement value is equal to the predetermined distance value, the operation 131 records the first value as the current value, and simultaneously the prompting unit 15 issues a prompting message. It should be noted that the prompt information is any one of the following: a prompt sound signal, a vibration signal and a combination signal of the two. More specifically, the user can set the prompt message to be a prompt sound and/or a prompt vibration through the micro-control chip 13. For example, in the case that the prompt unit 15 sends the prompt message, the payment device (the electronic device 2) sends the prompt sound, generates vibration, or sends the prompt sound and vibrates at the same time.

With continued reference to fig. 2-6. Step S41 is executed after step S32 is completed; in the step S41, the position detecting unit 12 is used to detect whether the current position of the finger stops changing; if yes, then executing step S5 after recording the current value as the password sequence; if not, step S33 is executed. The step S33 is: the arithmetic unit 131 is configured to perform the first processing on a variation displacement value according to the default distance value, so as to obtain a variation quotient of the variation displacement value divided by the predetermined distance value. Then, step S34 is executed, in step S34, the operation unit 131 executes a second process to a variation direction vector with the direction vector of the previous action; the second processing is to inner-product the direction vector of the previous motion with the variation direction vector to obtain an inner product value. After completion of step S34, step S35 is then executed. In step S35, the operation unit 131 determines whether the change quotient is equal to or greater than one, if yes, step S36 is executed; if not, the step S1 is repeatedly executed. Next, in step S36, the operation unit 131 is used to determine whether the inner product value is greater than or equal to zero; if yes, the arithmetic unit 131 is enabled to move the current value forward by a value according to a preset value table, and the prompting unit 15 is enabled to send a prompting signal; if not, the arithmetic unit 131 is enabled to move the current value backwards according to the preset value table, and the prompting unit 15 is enabled to send a prompting signal; step S41 is then repeatedly performed.

More specifically, in one embodiment of the present invention, the predetermined value table is a value table consisting of 0,9,8,7,6,5,4,3,2,1,0,9,8,7 \8230 \ 8230, and a repeated arrangement. That is, the first value is 0, and the first value is moved forward by a value of 9 and is moved backward by a value of 1. For example, in the case of a current value of 5, a value of 4 is moved forward, a value of 6 is moved backward, and so on. It is easy to understand that the preset value table can be set by the user according to the actual use condition. For example, the user changes the sequence of the preset value table according to the habit of the user. That is, the user can add or delete the values in the preset value table. In other words, the predetermined value table may be arranged according to the letter set by the user or may be a numerical sequence set by the user, for example, 2,4,6,8,0,1,3,5,7,9,2,4,6. According to the design of the invention, the security of inputting the password is further improved. On the other hand, the inner product of the direction vector of the previous motion and the variation direction vector is used for judging whether the previous motion and the current variation motion of the user are in the same direction or not. Therefore, the user can move the current value forwards or backwards through the operation direction.

Fig. 9 is an eighth flowchart showing the blind person-specific password input program of the present invention. To continue, the step S7 further includes a step S71, in which the step S71 detects whether the current value has been updated by using the operation unit 131, and if not, executes a step S72; if yes, the current value is recorded in the password sequence, and step S1 is repeated. The step S72 detects whether the current position overlaps the enter key of the password input unit 11 by using the position detection unit 12; if so, step S8 is executed, and if not, step S73 is executed. In the step S73, the position detecting unit 12 is used to detect whether the current position overlaps the cancel key of the password input unit 11, if yes, the password input procedure dedicated for the blind is ended, otherwise, the step S1 is executed repeatedly. The acknowledgement signal is any one of: confirming a sound signal, a vibration signal and a combined signal of the sound signal and the vibration signal; the cancellation signal is any one of: canceling sound signals, vibration signals, or a combination thereof. It should be noted that the voice signal, the prompt voice, the password error voice signal, the confirmation voice signal, and the cancellation voice signal are respectively set to different specific voices, for example: beep, jingle, piano, etc. Therefore, under the condition that the eyesight impaired people operate the password input device, the eyesight impaired people can clearly know the operation action and the operation condition.

Thus, the above embodiments and flow charts of the password input device and the password input program for the blind person of the present invention have been fully and clearly described; moreover, the invention has the following advantages as follows:

(1) The conventional password input device usually employs a real-time voice prompt method, so that the visually impaired can know the value of each key on the touch screen. However, the conventional real-time voice prompting method has the obvious disadvantages of time consumption, inconvenience and low security. Therefore, the invention provides a password input device. The device and the password input program special for the blind enable a position detection unit to detect the operation of the user by detecting the operation gesture of the user, so that a corresponding input value is obtained. In other words, the password input of the present invention improves the possibility of peeping the password, time consumption and inconvenience when the person with impaired vision uses the conventional password input device. On the other hand, according to the design of the present invention, the prompt signal can be set to vibration and/or prompt sound when the user inputs the password. Therefore, the user has the advantages of high safety and convenience when inputting the password by using the password input equipment.

It should be emphasized that the above detailed description is specific to possible embodiments of the invention, but this is not to be taken as limiting the scope of the invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the invention are intended to be included within the scope of the invention.

Claims (8)

1. A password input device is applied to an electronic device and comprises a password input unit, a position detection unit, a micro control chip, a storage unit and a prompt unit; the micro control chip is provided with an arithmetic unit for realizing a password input program special for the blind, and the password input program special for the blind comprises the following steps:

the method comprises the following steps that (1) under the condition that a finger performs password typing in the password input unit, the password input unit receives a trigger position, a current position and a current moving direction of the finger;

step (2) enabling the position detection unit to provide a current displacement value and a current direction vector according to the trigger position, the current position and the current moving direction;

step (3) making the arithmetic unit execute a first processing to the current displacement value by a default distance value, thereby making the prompting unit send out a prompting signal according to the result of the first processing and updating a current value at the same time;

step (4) detecting whether the current position of the finger stops changing by using the position detecting unit; if yes, executing the step (5); if not, repeating the step (3);

step (5) detecting whether the finger touches the password input unit under double-down condition by using the position detection unit, if so, executing step (7); if not, executing the step (6);

step (6) using the position detection unit to detect whether the finger touches a confirmation key or a cancel key, if the finger touches the confirmation key, playing a confirmation signal, and repeatedly executing the step (1); if the cancel key is touched, a cancel signal is played, and the step (1) is repeatedly executed; if not, repeating the step (1);

step (7) using the operation unit to detect whether the current value has been updated, if yes, recording the current value into a password sequence, and repeating the step (1); if not, then executing step (8);

and (8) outputting the password sequence by the micro-control chip.

2. The apparatus of claim 1, wherein the steps (3) and (4) further comprise the steps of:

step (31) making the arithmetic unit execute the first processing on the current displacement value by the default distance value, thereby making the prompting unit send out a prompting message according to the result of the first processing and updating a current value at the same time; the first processing is to divide the current displacement value by a preset distance value to obtain a quotient value;

step (32) when the quotient value is equal to one, the arithmetic unit takes a first value as the current value, and the prompting unit sends out the prompting signal and then executes step (41);

step (41) detecting whether the current position of the finger stops changing by using the position detecting unit; if yes, then executing step (5) after recording the current value as the password sequence; if not, executing step (33);

step (33) causing the arithmetic unit to perform the first processing on a variation displacement value by the default distance value, thereby obtaining a variation quotient of the variation displacement value divided by the preset distance value;

step (34) making the arithmetic unit execute a second process to a variation direction vector with the direction vector of a previous action; the second processing is to inner-product the direction vector of the previous action with the variation direction vector to obtain an inner product value;

step (35) making the arithmetic unit determine whether the change quotient is equal to or greater than one, if yes, executing step (36); if not, repeating the step (1);

step (36) determining whether the inner product value is greater than or equal to zero using the arithmetic unit; if yes, the arithmetic unit moves the current value forward by a numerical value according to a preset numerical value table, and simultaneously the prompting unit sends a prompting signal; if not, the arithmetic unit is enabled to move the value of the current value backwards according to the preset value table, and meanwhile, the prompt unit is enabled to send a prompt signal; then, step (41) is repeatedly performed.

3. The password input apparatus of claim 1, wherein said step (7) further comprises the steps of:

step (71) detecting whether the current value has been updated by the operation unit, and if not, performing step (72); if yes, recording the current value into the password sequence, and repeating the step (1);

step (72) detecting whether the current position overlaps the confirmation key of the password input unit by using the position detection unit; if yes, executing step (8), otherwise, executing step (73);

and (73) detecting whether the current position is overlapped with the cancel key of the password input unit or not by using the position detection unit, if so, ending the password input program special for the blind person, and if not, repeatedly executing the step (1).

4. The password input apparatus of claim 1, wherein the electronic device is any one of: smart phones, tablet computers, smart watches, access devices, and payment devices.

5. The password input apparatus of claim 2, wherein the password input unit is any one of: the touch screen, the liquid crystal screen are matched with a mouse, an infrared touch screen and a large-scale touch billboard.

6. The password input apparatus of claim 2, wherein the first value is 0 and the preset value table comprises 0,9,8,7,6,5,4,3,2,1.

7. The password input apparatus of claim 2, wherein the prompt signal is any one of: sound signal, vibration signal, or a combination thereof.

8. A password input device as recited in claim 3, wherein the confirmation signal is any one of: confirming a sound signal, a vibration signal and a combined signal of the sound signal and the vibration signal; the cancellation signal is any one of: canceling sound signals, vibration signals, or a combination thereof.

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