CN106445252B - Handwriting infrared acquisition structure capable of avoiding error identification and thickness recording of continuous pen track - Google Patents
Handwriting infrared acquisition structure capable of avoiding error identification and thickness recording of continuous pen track Download PDFInfo
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- CN106445252B CN106445252B CN201611046911.3A CN201611046911A CN106445252B CN 106445252 B CN106445252 B CN 106445252B CN 201611046911 A CN201611046911 A CN 201611046911A CN 106445252 B CN106445252 B CN 106445252B
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- infrared
- handwriting
- pressure sensitive
- sensitive layer
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
Abstract
The invention discloses a handwriting infrared acquisition structure capable of avoiding error identification and thickness recording of a continuous pen track. The writing surface of the writing board is provided with a pressure sensitive layer, two sides of the pressure sensitive layer are provided with infrared receiving and transmitting devices, the bottom surface of each infrared receiving and transmitting device is not higher than the bottom surface of the pressure sensitive layer, each infrared receiving and transmitting device adopts an infrared receiving and transmitting LED lamp, a PCB printed circuit board is adopted as the writing board, or the periphery of the original writing board body is provided with the PCB printed circuit board and the handwriting infrared acquisition structure. The invention can solve the problem of continuous pen connection of track recognition caused by pen lifting error recognition, improve the real restoration degree of the actual writing content, improve the handwriting recognition accuracy of the handwriting board, restore the thickness change of the track, improve the real restoration degree of the actual writing content, and more accurately and specifically present the handwriting content.
Description
Technical Field
The invention relates to a handwriting infrared acquisition structure capable of avoiding error identification and thickness recording of a continuous pen track.
Background
At present, an infrared receiving and transmitting LED lamp is welded on a PCB printed circuit board, the circuit board after welding and assembling is stuck on glass through adhesive, and the surface of the glass is used as the surface of a handwriting board body.
One problem is that because of the PCB board height, the infrared transceiver LED lamp body height, and the adhesive material height securing the circuit board to the handwriting board body, these height dimensions add up to result in a height difference Δh between the nearest infrared and handwriting board surface that is always present and greater than zero.
After one action is normally written, the pen is lifted to carry out the next writing action. In the pen lifting process, the pen lifting height is less than or equal to delta H, and the infrared rays are mistakenly considered to be in the same writing action, so that the problem of restoring the track and connecting the pen is commonly generated. The prior art is improved by means of reducing the height of a PCB, using smaller infrared LED lamps and the like, but the improvement space is limited, and the problem that the delta H approaches to 0 cannot be solved all the time.
Another problem is that the intensity of the writing is variable and uneven (e.g. the key content is hard and the common content is worn) when a person writes normally, and the thickness of the written notes is inconsistent. However, the track thickness identified and restored by the prior art is the same, and the content which is emphasized by the writer is not reproduced, so that the problem of presenting the note thickness cannot be solved in the infrared receiving and transmitting LED lamp technology in the prior art.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a handwriting infrared acquisition structure capable of avoiding the error recognition and the thickness recording of a continuous pen track, and solving the problems of track recognition and continuous pen caused by pen lifting error recognition and the thickness recovery of notes.
The technical scheme adopted by the invention is as follows:
the writing surface of the writing board is provided with a pressure sensitive layer, two sides of the pressure sensitive layer are provided with infrared receiving and transmitting devices, and the bottom surface of the infrared receiving and transmitting devices is not higher than the bottom surface of the pressure sensitive layer.
The infrared receiving and transmitting device adopts an infrared receiving and transmitting LED lamp, transmits and receives infrared light through the infrared receiving and transmitting LED lamp, and further processes the received infrared light to obtain the data of the writing track and the thickness of the pen.
The handwriting board comprises a PCB printed circuit board, wherein the PCB printed circuit board is used as a writing board or the PCB printed circuit board and the handwriting infrared acquisition structure are arranged around the original writing board body.
The PCB printed circuit board is used as a writing board, the upper surface of the PCB printed circuit board is provided with a pressure sensitive layer, the upper surface of the PCB printed circuit board around the pressure sensitive layer is provided with infrared receiving and transmitting devices, and the infrared receiving and transmitting devices are fixed on the PCB printed circuit board.
Preferably, the bottom surface of the infrared transceiver is flush with the bottom surface of the pressure sensitive layer and is positioned on the same horizontal plane, so that the distance height difference delta H between the nearest infrared light emitted by the infrared transceiver and the upper surface of the handwriting board is reduced.
Preferably, the PCB printed circuit board is used as a writing board, the upper surface of the PCB printed circuit board is provided with a pressure sensitive layer, the upper surface of the PCB printed circuit board around the pressure sensitive layer is provided with a step PCB step, the infrared receiving and transmitting device is arranged on the step PCB step, the bottom surface of the infrared receiving and transmitting device is lower than the bottom surface of the pressure sensitive layer, the height difference between infrared light emitted by the infrared emitting device and the writing surface is 0 or approaches to 0, and the track pen connection problem caused by pen lifting error identification is reduced to the greatest extent.
Preferably, a PCB is arranged around the original writing board body, the infrared transceiver is arranged on the PCB, the pressure sensitive layer is arranged on the upper surface of the writing board body, the upper surface of the PCB is not higher than the upper surface of the pressure sensitive layer, so that the bottom surface of the infrared transceiver is not higher than the bottom surface of the pressure sensitive layer, and the distance height delta H between the latest infrared light emitted by the infrared transceiver and the upper surface of the writing board is reduced.
Preferably, a PCB is arranged around the original writing board body, a stepped PCB step is arranged at the edge of the PCB close to the writing board body, an infrared receiving and transmitting device is arranged on the upper step and the lower step of the stepped PCB step), a pressure sensitive layer is arranged on the upper surface of the writing board body, the surface height of the lower step of the stepped PCB step is not higher than the upper surface of the pressure sensitive layer, so that the bottom surface of the infrared receiving and transmitting device is not higher than the bottom surface of the pressure sensitive layer, the height difference between infrared light emitted by the infrared emitting device and the handwriting surface is 0 or approaches to 0, and the track continuous pen problem caused by pen lifting error identification is reduced to the greatest extent.
The beneficial effects of the invention are as follows:
on one hand, the problem of continuous pen connection in track recognition caused by pen lifting error recognition can be solved, the true restoration degree of actual writing content is improved, and the handwriting recognition accuracy of the handwriting board is improved.
On the other hand, the thickness change of the track can be restored, the true restoration degree of the actual written content is improved, and the handwritten content is presented more accurately and pointedly.
Drawings
Fig. 1 is a schematic view of a first embodiment of the structure of the present invention.
Fig. 2 is a schematic diagram of a second embodiment of the structure of the present invention.
Fig. 3 is a schematic representation of a third embodiment of the structure of the present invention.
Fig. 4 is a schematic diagram of a fourth embodiment of the structure of the present invention.
In all figures: 1. the writing board comprises a writing board body 2, a pressure sensitive layer 3, a PCB 4, a stepped PCB step 5 and an infrared receiving and transmitting device.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
Embodiments of the invention are as follows:
example 1
As shown in fig. 1, a PCB printed circuit board 3 is used as a writing board, a pressure sensitive layer 2 is disposed on the upper surface of the PCB printed circuit board 3, infrared transceiver devices 5 are disposed on the upper surface of the PCB printed circuit board 3 around the pressure sensitive layer 2, and the infrared transceiver devices 5 are fixed on the PCB printed circuit board 3.
The bottom surface of the infrared transceiver 5 is flush with the bottom surface of the pressure sensitive layer 2 and is positioned on the same horizontal plane, so that the distance height difference delta H between the nearest infrared light emitted by the infrared transceiver 5 and the upper surface of the handwriting board is reduced. According to the embodiment, the handwriting board body such as the existing glass is omitted, the PCB is directly used as the handwriting board, and therefore the height problem caused by the thickness of the existing PCB can be avoided.
Example 2
As shown in fig. 2, the PCB 3 is used as a writing board, the upper surface of the PCB 3 is provided with a pressure sensitive layer 2, the upper surface of the PCB 3 around the pressure sensitive layer 2 is provided with a step PCB step 4, the infrared transceiver 5 is disposed on the step PCB step 4, and the infrared transceiver is welded on the step PCB step 4, so that the bottom surface of the infrared transceiver 5 is lower than the bottom surface of the pressure sensitive layer 2, the height difference between infrared light emitted by the infrared transmitter and the handwriting surface is close to 0, and the track continuous problem caused by pen lifting error identification is reduced to the greatest extent.
The infrared light emitted by the infrared transceiver 5 is partially blocked by the walls of the stepped PCB steps 4, but ensures that enough infrared light is emitted against the upper surface of the PCB 3 or the pressure sensitive layer 2 to sense the change in height of the writing object and writing surface. Therefore, the height difference delta H is infinitely close to 0, and the problem of track continuous pen caused by pen lifting misidentification is reduced to the greatest extent.
Example 3
As shown in fig. 3, a PCB 3 is disposed around the original writing board body 1, the infrared transceiver 5 is disposed on the PCB 3, the pressure sensitive layer 2 is disposed on the upper surface of the writing board body 1, and the upper surface of the PCB 3 is not higher than the upper surface of the pressure sensitive layer 2, so that the bottom surface of the infrared transceiver 5 is not higher than the bottom surface of the pressure sensitive layer 2, thereby reducing the distance height difference Δh between the nearest infrared light emitted by the infrared transceiver 5 and the upper surface of the writing board.
Example 4
As shown in fig. 4, a PCB 3 is disposed around an original writing board body 1, a stepped PCB step 4 is formed on the edge of the PCB 3 close to the writing board body 1, a step is also formed on the basis of embodiment 3, an infrared transceiver 5 is disposed above the upper and lower steps of the stepped PCB step 4, a pressure sensitive layer 2 is disposed on the upper surface of the writing board body 1, the surface height of the lower step 4 of the stepped PCB step 4 is not higher than the upper surface of the pressure sensitive layer 2, so that the bottom surface of the infrared transceiver 5 is not higher than the bottom surface of the pressure sensitive layer 2, the difference between the height of infrared light emitted by the infrared transmitter and the height of the handwriting surface is close to 0, and the problem of track connection caused by pen lifting and error recognition is reduced to the greatest extent.
The infrared light emitted by the infrared transceiver 5 is partially blocked by the writing board body 1, but ensures that enough infrared light is emitted against the upper surface of the PCB printed circuit board 3 or the pressure sensitive layer 2 to sense the change in height of the writing object and writing surface. Therefore, the height difference delta H is infinitely close to 0, and the problem of track continuous pen caused by pen lifting misidentification is reduced to the greatest extent.
The foregoing detailed description is provided to illustrate the present invention and not to limit the invention, and any modifications and changes made to the present invention within the spirit of the present invention and the scope of the appended claims fall within the scope of the present invention.
Claims (5)
1. Can avoid linking pen orbit misrecognition and record thick and thin handwriting infrared acquisition structure is equipped with pressure sensitive layer (2), its characterized in that at the writing surface of clipboard: the two sides of the pressure sensitive layer (2) are provided with infrared receiving and transmitting devices (5), and the bottom surface of the infrared receiving and transmitting devices (5) is not higher than the bottom surface of the pressure sensitive layer (2);
the writing board comprises a PCB (printed circuit board) (3), wherein the PCB (3) and the handwriting infrared acquisition structure are arranged around an original writing board body (1);
a PCB (3) is arranged around an original writing board body (1), a stepped PCB step (4) is arranged at the edge of the PCB (3) close to the writing board body (1), an infrared receiving and transmitting device (5) is arranged on the upper and lower steps of the stepped PCB step (4), a pressure sensitive layer (2) is arranged on the upper surface of the writing board body (1), the bottom surface of the infrared receiving and transmitting device (5) of the lower step is not higher than the bottom surface of the pressure sensitive layer (2), and the height difference between infrared light emitted by an infrared emitting device and the handwriting surface is reduced;
the infrared light emitted by the infrared transceiver (5) is partially blocked by the writing board body (1), but the infrared light is emitted by being tightly attached to the upper surface of the pressure sensitive layer (2) so as to sense the height change of the writing object and the writing surface.
2. The handwriting infrared acquisition structure capable of avoiding misidentification and recording of continuous tracks according to claim 1, wherein the handwriting infrared acquisition structure is characterized in that: the infrared receiving and transmitting device (5) adopts an infrared receiving and transmitting LED lamp.
3. The handwriting infrared acquisition structure capable of avoiding misidentification and recording of continuous tracks according to claim 1, wherein the handwriting infrared acquisition structure is characterized in that: the writing board is characterized in that the PCB printed circuit board (3) is used as the writing board, the pressure sensitive layer (2) is arranged on the upper surface of the PCB printed circuit board (3), and the infrared receiving and transmitting devices (5) are arranged on the upper surface of the PCB printed circuit board (3) around the pressure sensitive layer (2).
4. A handwriting infrared acquisition structure capable of avoiding misidentification and recording of a continuous track according to claim 3, characterized in that: the bottom surface of the infrared receiving and transmitting device (5) is flush with the bottom surface of the pressure sensitive layer (2), so that the distance height difference between the nearest infrared light emitted by the infrared receiving and transmitting device (5) and the upper surface of the handwriting board is reduced.
5. The handwriting infrared acquisition structure capable of avoiding misidentification and recording of continuous tracks according to claim 1, wherein the handwriting infrared acquisition structure is characterized in that: the writing board is characterized in that the PCB printed circuit board (3) is used as the writing board, the pressure sensitive layer (2) is arranged on the upper surface of the PCB printed circuit board (3), the ladder PCB step (4) is arranged on the upper surface of the PCB printed circuit board (3) around the pressure sensitive layer (2), and the infrared transceiver (5) is arranged in the ladder PCB step (4) so that the bottom surface of the infrared transceiver (5) of the lower ladder is lower than the bottom surface of the pressure sensitive layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046911.3A CN106445252B (en) | 2016-11-23 | 2016-11-23 | Handwriting infrared acquisition structure capable of avoiding error identification and thickness recording of continuous pen track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046911.3A CN106445252B (en) | 2016-11-23 | 2016-11-23 | Handwriting infrared acquisition structure capable of avoiding error identification and thickness recording of continuous pen track |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106445252A CN106445252A (en) | 2017-02-22 |
| CN106445252B true CN106445252B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611046911.3A Active CN106445252B (en) | 2016-11-23 | 2016-11-23 | Handwriting infrared acquisition structure capable of avoiding error identification and thickness recording of continuous pen track |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134292B (en) * | 2019-05-24 | 2022-12-16 | 京东方科技集团股份有限公司 | Handwriting input device, preparation method thereof and handwriting input equipment |
| CN116420131A (en) * | 2021-06-08 | 2023-07-11 | 广州创知科技有限公司 | Touch data processing method and interactive panel |
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