CN101685342A - Method and device for realizing dynamic virtual keyboard - Google Patents
Method and device for realizing dynamic virtual keyboard Download PDFInfo
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Abstract
The invention discloses a method for realizing a dynamic virtual keyboard, which comprises the following steps: establishing and storing information of relations between key positions and corresponding reference key positions; and acquiring information of key stroke positions, wherein the position relation information is used for determining the input characters after identifying position information when fingers tap the keyboard to input characters. The invention also provides a corresponding device and an input method. According to the invention, the positioning can be realized through puretouch in the virtual keyboard without absolute positioning of the original virtual keyboard, thereby enhancing the operation efficiency. Different keyboard parameters can be customized for different users, so that the keyboard is more suitable for the user; and therefore, the invention is a favorable engineering design for human bodies. The keyboard has the advantages of simple operation and convenient use.
Description
Technical field
The present invention relates to electronic information technical field, be specifically related to the implementation method and the device of dynamic virtual keyboard.
Background technology
In recent years, a large amount of uses along with functions such as personal digital assistant PDA, smart mobile phone and mobile phone mailboxes, carry out the welcome that dummy keyboard (VKB, Virtual Keyboard) that text input proposes is subjected to portable apparatus users such as PDA, smart mobile phone for satisfying the cellphone subscriber with qwerty keyboard.Adopt this dummy keyboard VKB can construct 63 key full size keyboards on the object of any plane, the user only needs like a cork to knock required character at this in by the infrared ray image represented, just can carry out words input.
At present, common dummy keyboard VKB has based on the dummy keyboard of infrared projection with based on the dummy keyboard of touch-screen (plate), and its something in common is all there is not the mechanical key of entity, but judge the absolute position of user keystroke, thereby discern current input content by sensor.In other words, though this class keyboard does not have physical button, have a virtual static key position, the user has only the position of each button of correct location just can finish input.
Therefore, the user wants to realize touch system existence a critical obstacle, i.e. the keystroke orientation problem of high performance on this class keyboard.Why traditional mechanical keyboard can realize touch system, one very important reasons be that it can guide the user to carry out sense of touch location by keycap.But current dummy keyboard can only provide the key position guiding of vision, if want touch system, then must rely on the accurate control of finger muscles to the keystroke displacement itself fully.Therefore, if the user will cause the reduction of keystroke speed by the vision auxiliary positioning, if rely on the muscle location fully then the increase of the rate that may lead to errors again.
Summary of the invention
In view of this, the invention provides a kind of implementation method and device of dynamic virtual keyboard, to solve the problem that can not on dummy keyboard, realize touch system in the prior art very effectively.
The implementation method of a kind of dynamic virtual keyboard that the embodiment of the invention provides comprises: set up the position relation information between each key position and the corresponding reference key and preserve;
When being used to discern input character, described position relation information after the positional information of finger tapping, determines the character of input.
The embodiment of the invention provides a kind of method of utilizing the dynamic virtual keyboard input character, comprising:
The both hands that detect the user are placed on the physics input face, and obtain the reference position information of each finger position at least one finger that touches described physics input face in the described both hands;
With the reference key position of described each finger position as dummy keyboard;
When first finger in detecting described at least one finger is operated carry out keystroke on described physics input face, obtain the first keystroke positional information of described first finger on described physics input face;
According to corresponding relation between the keystroke positional information of the described dummy keyboard of correspondence and input character, determine first input character of the described first keystroke positional information correspondence, wherein, described corresponding relation is according to the information that comprises described reference position information at least and definite relation.
A kind of device of realizing dynamic virtual keyboard that the embodiment of the invention provides comprises:
First projecting cell is used for throwing the effective coverage that demonstrates keystroke at a physics input face;
Sensing unit is used to obtain reference key positional information and keystroke positional information;
Storage unit is used to preserve each key position that calibration keystroke position obtains and the position relation information of corresponding reference key thereof;
Recognition unit, keystroke positional information that described sensing unit is obtained and the key information in the described storage unit compare, and determine the button content of input;
Display unit, the input character that recognition unit is determined when being used for the explicit user keystroke.
In the realization dynamic virtual keyboard technical scheme that the embodiment of the invention provides, by keyboard layout (as qwerty keyboard) is carried out projection, and the positional information of pointing when catching keystroke, judge the content of input according to the relative position relation between the reference key corresponding of each keystroke position, thereby realized the character input with it.Can no longer rely on the absolute fix of user, but judge the content of input by the relative displacement of keystroke static key position.
The present invention adopts the method that the keystroke position is dynamically judged, need not the absolute fix of original dummy keyboard, makes in the dummy keyboard and can position by pure sense of touch, thereby improved the operation effect.Adopting the method for relatively judging input, therefore can be the different keyboard parameter of different customization, make keyboard be fit to user itself more, is better ergonomic designs.This keyboard operation is simple, easy to use, and the user of every meeting touch system does not need special training just can grasp the using method of this keyboard.
Description of drawings
Fig. 1 is the dynamic virtual keyboard position correction process flow diagram in the embodiment of the invention;
Fig. 2 is the dynamic virtual keyboard input character process flow diagram in the embodiment of the invention;
The dynamic virtual keyboard synoptic diagram of Fig. 3 for providing in the embodiment of the invention one;
The dynamic virtual keyboard synoptic diagram of Fig. 4 for providing in the embodiment of the invention two;
The dynamic virtual keyboard synoptic diagram of Fig. 5 for providing in the embodiment of the invention three;
The device synoptic diagram of the realization dynamic virtual keyboard that Fig. 6 provides for the embodiment of the invention four.
Embodiment
At problems of the prior art described in the background technology, the present invention proposes a kind of new dynamic dummy keyboard, can no longer rely on the absolute fix of user to static key position, but judge the content of input by the relative displacement of keystroke, solve the keystroke sense of touch location difficulty of original dummy keyboard, thereby improved the operation effect.
At first, utilize light emitting source (pointolite of laser diode or infrared light supply) to carry out projection and form the keystroke zone, and catch the image that can help to determine " input " content.Determine by sensor when character keys is knocked, and the shift position of each keystroke finger.
For example, adopt camera to detect the shift position that keystroke is pointed, specifically comprise as position transducer:
Set up a staff picture library, analyze by color and shadow to image in the storehouse, staff when obtaining keystroke, finger and refer between moving characteristic information.
The feature that utilization is analyzed is out set up the algorithm of hand identification, makes the position of the finger of its staff that can discern various postures and correspondence thereof.
Utilize this algorithm that the image in the dynamic keyboard keystroke process is carried out Dynamic Recognition, obtain the movement locus of ten fingers.
From the movement locus that obtains, the finger of dynamic calculation keystroke and corresponding position information thereof.
In addition, also can adopt data glove to determine when character keys is knocked, and the shift position of each keystroke finger.
Usually, a kind of data glove comprises ten pressure transducers, is used to discern and judge the keystrokes of ten finger correspondences, and ten acceleration transducers are used to discern and analyze ten finger keystrokes preceding corresponding finger displacement and move angle.
Judge the finger of keystroke from pressure transducer;
Finger displacement and move angle before analyzing this and point this time keystroke from acceleration transducer.
A kind of dynamic dummy keyboard provided by the invention, the content of input is judged in the relative displacement during by user keystroke.
The embodiment of the invention is an example with the typewriter and the computer keyboard qwerty keyboard of standard based on the Latin alphabet commonly used, the baseline position of ten fingers when at first obtaining the user keystroke standby condition, the i.e. position of nine reference keys (wherein two thumbs coexist space key) by sensor.Then by a simple test, for example do virtual keystroke according to the demonstration letter, obtain relative displacement scope and angular range between other character keys and the reference key, for example left index finger to the displacement correspondence of next gear be alphabetical V, oblique next grade correspondence be letter b, to the first from left shelves correspondence is alphabetical G, upwards one grade of correspondence is letter r, one grade of correspondence is tee obliquely, and upwards two grades of correspondences is numeral 4, and two grades of correspondences is numeral 5 obliquely.At last, when the user began formally to import, system just can judge the content of input according to the relative position relation between the reference key corresponding with it of each keystroke position.
Embodiment one
A kind of implementation method of dynamic virtual qwerty keyboard is provided in the present embodiment, generate an invisible zone with infrared projection, and full-scale virtual qwerty keyboard is projected to a plane, and adopt camera to catch the image that can help to determine " input " content as sensor.
In order to obtain the pairing effective range of user keystroke exactly, need to determine the relation (comprising distance and angle) of each key position and reference position key position, at first the position of each key is calibrated, as shown in Figure 1, specifically comprise:
S101, the user places both hands side by side, the standby condition of simulation on mechanical keyboard, by sensor (as camera) obtain nine reference keys (be A, S, D, F, J, K, L and; Key, wherein two thumbs space key that coexists) positional information;
S102, system present character keys (as, letter e), user keystroke (being letter e), i.e. and user inputs character E obtains the position of this time keystroke by sensor (as, camera);
S103 calculates the position relation between this time keystroke positional information reference key position corresponding with it (as, alphabetical D), comprises distance and angle;
S104, with results of measuring corresponding with this character keys (being letter e) and reference key between positional information (as distance, angle) be weighted stack, and, be saved in the character key table with the alternative legacy data of the new result of stack;
Need to prove that system's character keys positional information blank before check and correction does not promptly provide original character key position information, and the character keys position that sets in advance initial table also can be provided.
S105 carries out position correction according to above-mentioned steps to each character keys in the qwerty keyboard, obtains complete character key table, and is as shown in table 1, comprise character keys title, corresponding reference key and and reference key between distance, angle.
Table 1
| The button title | Corresponding reference key | Relative distance | Relative angle |
| ??A | ??A | ??0 | ??0 |
| ??B | ??F | ??d1 | ??c1 |
| ??C | ??D | ??d2 | ??c2 |
| ??…… | ??…… | ??…… | ??…… |
So far, finish character keys position correction program.
Demonstrate the effective coverage of a keystroke to the user with infrared projection;
Discern the position of nine reference keys by image recognition technology according to the operator's finger initial position, during user inputs character when (keystroke), according to the finger shift position determine each keystroke the position and with corresponding reference key; On screen, give simultaneously the feedback of user keystroke content;
With reference to Fig. 2 and Fig. 3, as follows by the step of this dummy keyboard input character:
S201, the user places both hands side by side, and the standby condition of simulation on mechanical keyboard obtains the position (wherein two thumbs coexist space key) of nine reference keys by sensor (as, camera);
S202, user keystroke (as: letter e) obtains the position of this time keystroke by sensor (as, camera);
S203 detects the position relation information between this time keystroke reference key position corresponding with it (in this example being alphabetical D), comprises distance and angle.
S204, with testing result with by the comparing of position relation information in the key table, determine the button content of input, i.e. Shu Ru character.
Detected keystroke positional information is pressed within the scope that the position relation information is determined in the key table described, judges that then this key position is the character of being imported.
Embodiment two
Present embodiment provides a kind of sound attitude bimodulus dummy keyboard.
Wherein dynamic mode is identical with embodiment one, also is to adopt infrared projection and camera to realize.
Demonstrate the effective range district of a keystroke to the user with infrared projection;
Obtain the position of the each keystroke of user by sensor (as, camera);
Detect the relation between this time keystroke reference key position corresponding, comprise distance and angle with it, and then definite character of being imported.
Increased the static schema dummy keyboard on the basis of the dynamic virtual keyboard that embodiment one provides, demonstrated a fixing qwerty keyboard pattern with infrared projection to the user, as shown in Figure 4, the user is just as adopting common qwerty keyboard to carry out the character input.
The user can select to switch between dynamic mode and static schema.
When user's both hands not at (leaving) active zone, this active zone is the zone that forms dynamic keystroke in advance in a plane projection, institute's input character key position is arranged in this zone, obtains the keystroke positional information from described zone.Particularly, providing a static virtual keyboard, form fixing keyboard pattern in a plane projection by infrared projection, this keyboard pattern comprises all key positions, is used for direct input character.When the user begins keystroke,, determine the content of input by the image recognition position of keystroke on keyboard pattern at every turn;
When user's both hands are placed (standby condition of simulation on mechanical keyboard) side by side in active zone, computing equipment is discerned the position of nine reference keys by image recognition technology, then switches to dynamic mode from static schema, enters dynamic input identification; When the user begins keystroke, go out the position of each keystroke and the position relation of corresponding reference key thereof by image recognition, judge the character content of input.
Embodiment three
Present embodiment provides sound to mix dummy keyboard, equally also adopts infrared projection and camera to realize.So-called sound is mixed dummy keyboard and is set several fixedly key positions exactly, can directly knock this several fixedly key position input characters, and remaining button is according to determining with the relative position information of reference key.
Have the fixedly keystroke zone of key position in plane projection formation in advance, described fixedly key position is used for directly knocking input character.The user as required or input habit is self-defined go out to need the static button that shows, as shown in Figure 5, wherein button " CTRL ", " TAB ", " backspace ", " ENTER " and " WIN " are static display button; Demonstrate the effective range district of a keystroke with infrared projection to the user, and need the static button (user can adjust its position) that shows;
When user's both hands are placed (standby condition of simulation on mechanical keyboard) side by side in active zone, computing equipment is discerned the position of nine reference keys by image recognition technology, enters dynamic input identification; When the user begins keystroke, go out the position and the corresponding reference key thereof of each keystroke by image recognition, if the position of keystroke is in the static key zone that shows with this static state button as input, if the key zone that the position of keystroke does not show in static state, then judge the content of input according to dynamic mode, promptly, judge the character of input according to the position of keystroke and the position relation of corresponding reference key thereof.
Embodiment four
With reference to Fig. 6, the embodiment of the invention also provides a kind of device 400 of realizing dynamic virtual keyboard, comprising:
First projecting cell 410 is used to throw the effective coverage that demonstrates keystroke;
Utilize light emitting source (pointolite of laser diode or infrared light supply) to carry out projection and form the keystroke zone.
In the specific embodiments, can adopt camera to detect the shift position of button finger, thereby obtain the keystroke positional information as sensing unit; Also can adopt data glove to determine when button " is pressed ", and the shift position of each button finger.
The another kind that the embodiment of the invention provides is realized the device of dynamic virtual keyboard, also comprises:
Second projecting cell 460 is used for forming fixing keyboard pattern in a plane projection, and this keyboard pattern is used for direct input character;
The zone that second projecting cell forms the fixing keyboard pattern and the first projecting cell keystroke can be switched.
The embodiment of the invention provide another realize the device of dynamic virtual keyboard, the difference of the device that provides with embodiment four is, employing be not described first projecting cell 410 but the 3rd projecting cell 470.
The 3rd projecting cell 470 is used for having the fixedly keystroke zone of key position in plane projection formation, and described fixedly key position is used for directly knocking input character;
Described first, second and the 3rd projecting cell adopt the infrared light supply projection to form keystroke zone, fixing keyboard pattern and have the fixedly keystroke zone of key position.
Ground preferably adopts camera to detect the shift position that button is pointed as described sensing unit, obtains the keystroke positional information; Or
Adopt data glove to determine when button " is pressed ", and the shift position of each button finger, the keystroke positional information obtained.
The embodiment of the invention also provides a kind of electronic equipment with dynamic virtual keyboard.
This dynamic virtual keyboard provided by the invention is configured to the various electronic equipments that need the keyboard input, especially, as equipment such as portable PC, smart mobile phone and PDA, can make these equipment have the function of common mechanical keyboard, and the size of equipment itself, volume do not change, and still help portable.
In the realization dynamic virtual keyboard technical scheme that the embodiment of the invention provides, by keyboard layout (as qwerty keyboard) is carried out projection, and the positional information of pointing when catching keystroke, judge the content of input according to the relative position relation between the reference key corresponding of each keystroke position, thereby realized the character input with it.And do not adopt any entity key, kept dummy keyboard than mechanical keyboard advantage (as portability) in design.
The present invention adopts the method that the keystroke position is dynamically judged, has solved the location difficulty of original dummy keyboard, makes in the dummy keyboard and can position by pure sense of touch, thereby improved the operation effect.Adopting the method for relatively judging input, therefore can be the different keyboard parameter of different customization, make keyboard be fit to user itself more, is better ergonomic designs.This keyboard operation is simple, easy to use, and the user of every meeting touch system does not need special training just can grasp the using method of this keyboard.
Obviously, those skilled in the art should be understood that, above-mentioned each unit of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the memory storage and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of unit in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (18)
1, a kind of implementation method of dynamic virtual keyboard is characterized in that, comprising:
Set up the position relation information between each key position and the corresponding reference key and preserve;
When being used to discern input character, described position relation information after the positional information of finger tapping, determines the character of input.
2, the method for claim 1 is characterized in that, describedly sets up the relation information between each key position and the corresponding reference key position and preserves, and comprising:
Determine the reference key position based on the initial position that finger is placed;
Gather the relation information between each key position information and each key position and the corresponding reference key position, and be saved in the key information table.
3, method as claimed in claim 2 is characterized in that, also comprises the step that information in the described key information table is calibrated:
To calculating and upgrade key position information in the position of keystroke;
Utilize results of measuring upgrade in the key information table with corresponding reference key between the position relation information.
4, the method for claim 1, it is characterized in that the position relation information between each button and the corresponding reference key comprises distance and angle between each button and the reference key, relation information identification in position between described keystroke position and the pairing reference key comprises:
According to distance and the angle between keystroke positional information of being obtained and the reference key, judge the pairing character in keystroke position.
5, the method for claim 1 is characterized in that, the key position in the described dynamic virtual keyboard is according to the qwerty keyboard layout arrangement.
6, method as claimed in claim 5 is characterized in that, described reference key be A, S, D, F, J, K, L and; Key.
7, the method for claim 1 is characterized in that, also comprises:
In the zone of the dynamic keystroke of physics input face projection formation, the key position of importing is arranged in this zone, obtains the keystroke positional information from described zone in advance.
8, method as claimed in claim 7 is characterized in that, also comprises:
Form fixing keyboard pattern in a physics input face projection in advance, this keyboard pattern comprises all key positions, is used for direct input character;
Form fixing keyboard pattern and can switch with the dynamic zone of keystroke.
9, method as claimed in claim 7 is characterized in that, also comprises:
Have the fixedly keystroke zone of key position in physics input face projection formation in advance, described fixedly key position is used for directly knocking input character.
10, a kind of device of realizing dynamic virtual keyboard is characterized in that, comprising:
First projecting cell is used for throwing the effective coverage that demonstrates keystroke at a physics input face;
Sensing unit is used to obtain reference key positional information and keystroke positional information;
Storage unit is used to preserve each key position that calibration keystroke position obtains and the position relation information of corresponding reference key thereof;
Recognition unit, keystroke positional information that described sensing unit is obtained and the key information in the described storage unit compare, and determine the button content of input;
Display unit, the input character that recognition unit is determined when being used for the explicit user keystroke.
11, device as claimed in claim 10 is characterized in that, also comprises:
Second projecting cell 460 is used for forming fixing keyboard pattern in a physics input face projection, and this keyboard pattern is used for direct input character;
The zone that second projecting cell forms the fixing keyboard pattern and the first projecting cell keystroke can be switched.
12, device as claimed in claim 10 is characterized in that, also comprises:
The 3rd projecting cell 470 is used for having the fixedly keystroke zone of key position in physics input face projection formation, and described fixedly key position is used for directly knocking input character.
13, device as claimed in claim 10 is characterized in that,
Described first projecting cell adopts the infrared light supply projection to form the keystroke zone; And/or
Described second projecting cell adopts the infrared light supply projection to form fixing keyboard pattern; And/or
Described the 3rd projecting cell adopts infrared light supply projection formation to have the fixedly keystroke zone of key position.
14, device as claimed in claim 10 is characterized in that,
Adopt camera to detect the shift position that keystroke is pointed, obtain the keystroke positional information as described sensing unit; Or
Adopt data glove to determine as described sensing unit when button is knocked, and the shift position of each keystroke finger, the keystroke positional information obtained.
15, a kind of method of utilizing the dynamic virtual keyboard input character is characterized in that, comprising:
The both hands that detect the user are placed on the physics input face, and obtain the reference position information of each finger position at least one finger that touches described physics input face in the described both hands;
With the reference key position of described each finger position as dummy keyboard;
When first finger in detecting described at least one finger is operated carry out keystroke on described physics input face, obtain the first keystroke positional information of described first finger on described physics input face;
According to corresponding relation between the keystroke positional information of the described dummy keyboard of correspondence and input character, determine first input character of the described first keystroke positional information correspondence, wherein, described corresponding relation is according to the information that comprises described reference position information at least and definite relation.
16, method as claimed in claim 15 is characterized in that, described physics input face is provided with fixing keyboard pattern, and this keyboard pattern comprises all key positions, is used for direct input character, and this method also comprises:
The fixing keyboard pattern of form is switched with the zone of dynamic keystroke, utilize described fixing keyboard pattern input character.
17, method as claimed in claim 15, it is characterized in that, keystroke zone on described physics input face is provided with fixedly key position, described fixedly key position is used for directly knocking input character, described fixedly button title, quantity and position thereof as required or use habit select to determine that this method also comprises:
Utilize set fixedly key position input character.
18, a kind of electronic equipment with dynamic virtual keyboard is characterized in that, comprises the device as each described realization dynamic virtual keyboard in the claim 11 to 15.
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