CN2434723Y - Inductance writing pad - Google Patents
Inductance writing pad Download PDFInfo
- Publication number
- CN2434723Y CN2434723Y CN 00243965 CN00243965U CN2434723Y CN 2434723 Y CN2434723 Y CN 2434723Y CN 00243965 CN00243965 CN 00243965 CN 00243965 U CN00243965 U CN 00243965U CN 2434723 Y CN2434723 Y CN 2434723Y
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- CN
- China
- Prior art keywords
- pcb
- inductance type
- handwriting pad
- type handwriting
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an inductance writing pad, which at least comprises a film PCB, wherein, a circuit of the film PCB is a silver paste circuit or a silver paste adding carbon paste circuit; the film PCB is printed with an aerial array; the aerial array comprises an X-axis and a Y-axis; the X-axis and the Y-axis are respectively formed from at least one U-shaped antenna unit. The technology leads the cost of the inductance writing pad to be reduced and the performance to be good. The appearance design of the production is convenient because the film circuit is thin and soft.
Description
The utility model relates to a kind of hand input device, refers to a kind of that link to each other with computing machine, induction inductance type handwriting pad especially.
The general writing input board that uses has three kinds, i.e. resistance-type handwriting pad, condenser type handwriting pad and inductance type handwriting pad.But the discrimination of resistance-type and condenser type handwriting pad and resolution are all lower, so make that the reliability of handwriting input is not high, the accuracy that character is judged reduces.Thereby, usually use the inductance type handwriting pad, it is the electromagnetic signal of being sent by electromagnetic induction antenna sensing external electromagnetic signal source, and the position coordinates and the duty of electromagnetic signal source are judged in calculating, the comparison by the voltage strength sensed and frequency and signal are changed again.The receiving antenna array that existing inductance type handwriting pad, its electromagnetic induction antenna normally are carved into definite shape by two-sided PCB corrosion constitutes, and therefore, the electromagnetic induction antenna has accounted for main cost share.Became originally from the complete machine cost, this design forms with two-sided PCB corrosion entirely at the induction zone of handwriting input, takies large-area PCB, and cost is high.
In view of this, fundamental purpose of the present utility model is to provide a kind of inductance type handwriting pad, makes its cost reduce stable performance greatly.
The further purpose of the utility model is to provide a kind of inductance type handwriting pad, makes the shape-designing of its product of being more convenient for.
Another purpose of the utility model is to provide a kind of inductance type handwriting pad, can improve the reliability and the resolution thereof of handwriting input, and makes its adaptability stronger, can adapt to all-environment variation.
For achieving the above object, the utility model provides a kind of inductance type handwriting pad, includes printed circuit board (PCB) (PCB) at least, also comprises film PCB, be printed with the aerial array that is made of an above antenna element on the film PCB, this aerial array circuit is the conductive medium circuit.
Described antenna element can be by align at random angles.This antenna element horizontally constitutes the X-axis of aerial array, and this antenna element homeotropic alignment constitutes the Y-axis of aerial array.Described antenna element be shaped as semiclosed shape.This antenna element be shaped as U-shaped.The shape of described antenna element can be annular.
Described conductive medium circuit adds carbon slurry circuit or is silver slurry circuit for the silver slurry.But the printing of described film PCB circuit individual layer forms or the multilayer double exposure forms.Further comprise an insulation oil reservoir that is used to isolate between the line layer of described multilayer double exposure.
Described film PCB can be the monolithic thin film two sides and prints and to form or single face is printed and formed, or is printed respectively by two films and to be formed by stacking.
The output pin of described film PCB can be pegged graft with the associated components on the PCB.The connecting pin (PAD) that described film PCB output pin is drawn can be pressed on the circuit of the parts that are attached thereto by elastic layer by securing member, and these parts are arranged on the PCB.Also include a switching film PCB on the described film PCB, connection PAD and the another side that film PCB simultaneously draws drawn is connected PAD and can be transformed in one side by switching film PCB, this connection PAD can be pressed on the circuit of the parts that are attached thereto by elastic layer by securing member, and these parts are arranged on the PCB.
Wherein, described securing member can be metal platen, shell and screw.Described elastic layer can be the soft and resilient material of rubber (RUBBER) class.
Inductance type handwriting pad provided by the utility model, compared with prior art its ratio of performance to price is high, and is as shown in table 1, and table 1 has provided the contrast of prior art and the utility model cost.Wherein, existing electromagnetic type handwriting pad induction antenna is to form with two-sided PCB corrosion, and the induction antenna of inductance type handwriting pad of the present utility model is to be printed on the film of having silver slurry and carbon slurry, and all indexs all are measurement unit with the platform in the table:
| The PCB area | The film induction antenna | The PCB unit price | Processing cost | Other cost | Total cost | |
| Existing product | 20 *17.5CM 2 | Do not have | 0.06 unit/ | 2 yuan | X unit | (23+X) unit |
| The utility model | 18.2 *2.7CM 2 | 4.00 unit | 0.06 unit/CM 2 | 2.5 unit | (X+1) unit | (10.4+X) unit |
| The cost difference | 12.6 unit |
Total cost described in table 1 table comprises every used PCB of machine and adds induction antenna and artificial and other related accessories cost, and other related accessories will increase some structural members when being meant with the film induction antenna.As can be seen from the table, owing to used the film induction antenna, make the area of PCB significantly reduce, thereby the total cost of this product declined to a great extent that the cost of its electromagnetic induction antenna can reduce by 56%～60%.In addition,, therefore be convenient to product is carried out various shape-designings, make the shape of product more diversified because employed thin film circuit is thin and soft.
The film induction antenna of inductance type handwriting pad comprises X-axis and Y-axis, X-axis and Y-axis are made of the antenna element of a plurality of U-shapeds or semiclosed shape such as approximate rectangular respectively, according to the needs of signal Processing, can suitably increase or reduce the number of antenna element, can make this handwriting pad resolution reach different effects.
In addition, this film induction antenna proves through actual test: (1) reliability height.Respectively with 50Hz, three of 3mm continuous shaking X, Y, Z 2 hours, its performance is constant.(2) adaptability is stronger, applicable to various environment.Deposited 12 hours at-40 ℃, + 70 ℃ are deposited 12 hours is a storage cycle, each is stored all after dates and does testing performance index at normal temperatures one time, repeats four all after date performance index like this and changes as follows: each cell resistance rate of change≤2% of a. (constant substantially); B. functional test OK; C. other index is all qualified.Show according to above-mentioned experiment test: its working temperature can be at-20 ℃～+ 50 ℃, and working relative humidity is below 100%RHC; Its storage temperature is-30 ℃～+ 70 ℃.
Below in conjunction with drawings and the specific embodiments the utility model is further described in more detail.
Fig. 1 is a fundamental diagram of the present utility model;
Fig. 2 is an aerial array internal circuit synoptic diagram among the utility model embodiment;
Fig. 3 is the change-over panel print pattern of thin layer top layer circuit and bottom circuit among the utility model embodiment.
See also shown in Figure 1ly, aerial array 11 intersects layout by the antenna of some U-shapeds and forms, and this aerial array is to be printed on the thin layer that adheres to conductive medium.Handwriting pad among the utility model embodiment adopts the monolithic thin film two-face printing to form, the two-layer circuit of every upper thread Lu Junyong, and interlayer is isolated with insulating oil.It is divided into bottom and top layer.Bottom is by the U-shaped antenna interlacing of several levels, top layer is by several vertical U-shaped antenna interlacings, the pin leads of bottom circuit and top layer circuit is by change-over circuit plate conversion at grade, so that the output pin of antenna can be pressed on the structure on the signal Processing pcb board with it on the circuit of interfaces.The print pattern of this change-over panel as shown in Figure 3.When the center of external electromagnetic signal source is in a certain position of film induction antenna and the magnetic line of force and passes U-shaped antenna on the film, corresponding electromagnetic signal source center and near horizontal U-shaped antenna of bottom and the vertical u-shaped antenna of top layer will be sensed electromagnetic signal, calculating voltage strength that comparison bottom and top layer U-shaped antenna sensed and frequency and signal respectively by CPU12 changes, judge position coordinates and the various duty of electromagnetic signal source at induction antenna, CPU12 is again with the coordinate that detects and the state RS232 by main frame (PC), PS/2 or USB port send PC to, PC finishes the exercises instruction according to received coordinate information and state, as: literal or shape recognition, drawing and shortcut function etc.Electromagnetic signal source is the time writer of joining machine in the inductance type handwriting pad, time writer usual constantly transmission frequency or data electromagnetic signal, and usual frequency or data stationary, when pressing nib, the electromagnetic frequency of emission or data message can change.In a word, this handwriting pad mainly is to add carbon slurry printed wire with silver slurry or silver slurry to make the electromagnetic induction receiving antenna on film PCB, utilizes electromagnetic induction principle to come receiving electromagnetic signals.
The film PCB of above-mentioned handwriting pad is with silver slurry or silver slurry, the carbon pulp mixture electromagnetic induction circuit attached to printing U-shaped or other shape on the film of various materials, i.e. antenna element.This antenna element level or homeotropic alignment have constituted the aerial array that distributes by X-axis and Y-axis.Wherein, the ratio of silver slurry and carbon slurry can suitably be adjusted within the specific limits, the ratio of silver slurry is few more, its cost is low more, but reducing, the ratio of silver slurry can cause the impedance increase simultaneously, therefore, can only adjust the ratio that silver is starched and carbon is starched in suitable scope and could guarantee that the ratio of performance to price of this handwriting pad is best.The resistance value that described proper range is meant antenna array X, Y-axis is as far as possible less than the input impedance of this machine amplifier, this resistance is different to different machines, can draw according to the trial value of different machines, as long as can guarantee not influence the reception linearity of antenna.Be meant the Y-axis impedance in the present embodiment less than 90 ohm, and the X-axis impedance is less than 60 ohm.
The induction antenna unit of the U-shaped on the film PCB or other shape can increase according to concrete product or reduce, and this antenna element horizontally promptly constitutes X-axis, and its homeotropic alignment just constitutes Y-axis.Varying in size of inductance type handwriting pad, the quantity of used induction antenna are also different, as 6
*4.5 inch
2Handwriting pad, its induction antenna X-axis is with 26 U-shaped antenna elements, Y-axis is with 20 U-shaped antenna elements, its internal circuit is as shown in Figure 2.4
*3 inches
2The handwriting pad of size, its induction antenna X-axis be with 18 U-shaped antenna elements, and Y-axis is with 14 U-shaped antenna elements.Increase or the minimizing antenna element, relevant with the antenna induction size and the resolution of this equipment.If increase the number of antenna element, promptly increase the density of antenna element, can play the effect that improves handwriting pad resolution.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.
Claims (15)
1, a kind of inductance type handwriting pad includes printed circuit board (PCB) (PCB) at least, it is characterized in that: also comprise film PCB, be printed with the aerial array that is made of an above antenna element on the film PCB, this aerial array circuit is the conductive medium circuit.
2, inductance type handwriting pad according to claim 1, it is characterized in that: described antenna element can be by align at random angles.
3, inductance type handwriting pad according to claim 1 and 2, it is characterized in that: described antenna element horizontally constitutes the X-axis of aerial array, and this antenna element homeotropic alignment constitutes the Y-axis of aerial array.
4, inductance type handwriting pad according to claim 1 and 2 is characterized in that: described antenna element be shaped as semiclosed shape.
5, inductance type handwriting pad according to claim 4 is characterized in that: described antenna element be shaped as U-shaped.
6, inductance type handwriting pad according to claim 1 and 2, it is characterized in that: the shape of described antenna element can be annular.
7, inductance type handwriting pad according to claim 1 is characterized in that: described conductive medium circuit adds carbon slurry circuit or is silver slurry circuit for the silver slurry.
8, according to claim 1 or 7 described inductance type handwriting pads, it is characterized in that: but the printing of described film PCB circuit individual layer forms or the multilayer double exposure forms.
9, inductance type handwriting pad according to claim 8 is characterized in that: further comprise an insulation oil reservoir that is used to isolate between the line layer of described multilayer double exposure.
10, inductance type handwriting pad according to claim 1 is characterized in that: described film PCB can be the printing of monolithic thin film two sides and forms.
11, inductance type handwriting pad according to claim 1 is characterized in that: described film PCB can be printed by the monolithic thin film single face and form.
12, inductance type handwriting pad according to claim 1 is characterized in that: described film PCB can be two films and prints respectively and be formed by stacking.
13, inductance type handwriting pad according to claim 1 is characterized in that: the output pin of described film PCB can be pegged graft with the associated components on the PCB.
14, inductance type handwriting pad according to claim 1 is characterized in that: the connecting pin (PAD) that described film PCB output pin is drawn can be pressed on the circuit of the parts that are attached thereto by elastic layer by securing member, and these parts are arranged on the PCB.
15, according to claim 10 or 14 described inductance type handwriting pads, it is characterized in that: also include a switching film PCB on the described film PCB, connection PAD and the another side that film PCB simultaneously draws drawn is connected PAD and can be transformed in one side by switching film PCB, this connection PAD can be pressed on the circuit of the parts that are attached thereto by elastic layer by securing member, and these parts are arranged on the PCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00243965 CN2434723Y (en) | 2000-07-27 | 2000-07-27 | Inductance writing pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00243965 CN2434723Y (en) | 2000-07-27 | 2000-07-27 | Inductance writing pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2434723Y true CN2434723Y (en) | 2001-06-13 |
Family
ID=33603749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00243965 Expired - Lifetime CN2434723Y (en) | 2000-07-27 | 2000-07-27 | Inductance writing pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2434723Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003056417A1 (en) * | 2001-12-29 | 2003-07-10 | Tai Guen Enterprise Co.,Ltd | An electronic whiteboard having flexibility membrane electromagnet induction generating device |
| CN1296847C (en) * | 2003-02-14 | 2007-01-24 | 北京华旗资讯数码科技有限公司 | Digital memo pad possessing handwritten input memory function |
-
2000
- 2000-07-27 CN CN 00243965 patent/CN2434723Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003056417A1 (en) * | 2001-12-29 | 2003-07-10 | Tai Guen Enterprise Co.,Ltd | An electronic whiteboard having flexibility membrane electromagnet induction generating device |
| CN1296847C (en) * | 2003-02-14 | 2007-01-24 | 北京华旗资讯数码科技有限公司 | Digital memo pad possessing handwritten input memory function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TAIJUN TECHNOLOGY(SHENZHEN) LTD. Free format text: FORMER OWNER: TAIJUN INDUSTRIAL CO., LTD. Effective date: 20050603 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Patentee after: TGE Group Corp. Patentee before: TAI GUEN ENTERPRISE CO.,LTD. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20050603 Address after: 518106, No. 23, third industrial zone, down village, Gongming Town, Shenzhen, Guangdong, Baoan District Patentee after: Taiguen Technology (Shen Zhen) Co.,Ltd. Address before: Taoyuan County of Taiwan province Zhongli City Ring Road No. 400 10 floor 7 Patentee before: TGE Group Corp. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010613 |