CN101312341B - Input device - Google Patents
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- CN101312341B CN101312341B CN2007101051848A CN200710105184A CN101312341B CN 101312341 B CN101312341 B CN 101312341B CN 2007101051848 A CN2007101051848 A CN 2007101051848A CN 200710105184 A CN200710105184 A CN 200710105184A CN 101312341 B CN101312341 B CN 101312341B
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Abstract
The invention provides an input device, which comprises a signal scan line, a plurality of signal output lines, an output end and a plurality of first keys, wherein the signal scan line is provided with a first signal electric level, the plurality of signal output lines are provided with a second signal electric level, the output end is coupled with the plurality of signal output lines, and the output end determines a key code according to the signal electric level which is coupled with the plurality of signal output lines. Further, each first key is provided with at least three end points, wherein one end point is coupled with the signal scan line, and other end points are selectively coupled with the plurality of signal output lines. Especially, when a first key is pressed, the end point corresponding to the first key and a corresponding signal output line are provided with the first signal electric level.
Description
Technical field
The present invention relates to a kind of input unit (Input apparatus), and especially, the present invention relates to a kind of press key input device.
Background technology
Various electronic apparatus/system now as mobile phone, affairs machine, digital camera, notebook computer etc., all has input unit, comprises the button that quantity differs, and in order to the user to be provided described electronic apparatus/system is operated.Along with function that electronic apparatus/system comprised increases day by day, the number of keys of input unit also needs relatively to increase, and uses various functions so that the user to be provided.
See also Figure 1A and Figure 1B, Figure 1A shows the schematic diagram of the input unit of prior art; Figure 1B is the signal level of output line 562 and the tabulation of corresponding key set code that lists the input unit 5 of Figure 1A.
Shown in Figure 1A, input unit 5 of the prior art comprises several buttons 52, a signal scanning line 542 and an output 56.In addition, this signal scanning line 542 has one first signal level.Output 56 then couples many barss output line 562, and each bars output line all has a secondary signal level.52 of each buttons in the described button 52 have one first end points 522a and one second end points 522b respectively, and, this first end points 522a is coupled to this signal scanning line 542, and this second end points 522b then optionally is coupled to the output line in the described output line 562.Further, when this button 52 was pressed, the end points 522 of these button 52 correspondences and corresponding output line had first signal level identical with this signal scanning line 542.
For example, suppose that the signal scanning line 542 among Figure 1A has lower first signal level " 0 ", and each bars output line 562a-562e all has the secondary signal level " 1 " that is higher than first signal level.When the button 52 of the rightmost side among Figure 1A was pressed, its pairing signal scanning line 562e just had first signal level, and output line 562a-562e has signal level 1,1,1,1,0 respectively.Contrast Figure 1B, output 56 is " 5 " according to the key set code of described signal level decision.Again for example, when the button of the leftmost side among Figure 1A is pressed, will make output line 562a have first signal level, and output line 562a-562e have signal level 0,1,1,1,1 respectively.Contrast Figure 1B, output 56 is " 1 " according to the key set code of described signal level decision.By this, the existing input unit 5 that comprises five bars output lines 562 shown in Figure 1A can determine five key set codes altogether.
Apparently, can increase decidable key set code quantity by the mode that increases signal scanning line or output line simply, so that the purpose that provides the user to use various functions to be provided.Yet, must increase corresponding number of output lines and make described electronic apparatus/system need more space to hold difficulty and cost that these a little output lines increase design if will increase the number of keys output, also taken its inner bandwidth.Therefore, how to increase number of keys and do not cause the burden of electronic apparatus/system inside just to become the problem that existing industry engineer institute desire solves.
See also Fig. 2, Fig. 2 shows the schematic diagram of the input unit of prior art.As shown in Figure 2, this input unit 7 has five bars output line 762a-762e equally.Different is, described output line 762 is arranged with the 2x3 matrix-style, and therefore, this input unit 7 can be under the prerequisite that does not increase signal scanning line or output line more manys a key set code than 5 decisions of the input unit among Figure 1A; If there are 7 output lines under the arrangement of figure one, can arrange 7 buttons, under the arrangement of Fig. 2 matrix form, can be designed to 3x4=12 button by that analogy.
Yet the input unit 7 that Fig. 2 disclosed still is unable to cope with the demand of the electronic apparatus/system of quick increase.
Summary of the invention
Therefore, a category of the present invention is to provide a kind of input unit, to solve foregoing problems.Especially, can determine more key set codes efficiently, reduce the time that electronic apparatus/system is confirmed each key-press status according to input unit of the present invention.
A kind of input unit according to first preferred embodiment of the present invention comprises a signal scanning line, many barss output line, an output and a plurality of first button.Further, this signal scanning line has one first signal level, and this many barss output line all has a secondary signal level.This output couples this many barss output line, and this output determines a key set code according to the signal level that couples many barss output line.In addition, each first button in these a plurality of first buttons has at least three end points, and one of them end points couples this signal scanning line, and all the other end points optionally couple this many barss output line.Especially, when pushing one first button, the end points of this first button correspondence and this first signal level of corresponding output line tool.
A kind of input unit according to second preferred embodiment of the present invention comprises a signal scanning line, many barss output line, one first button and an output.Further, this signal scanning line has one first signal level, and this many barss output line all has a secondary signal level.In addition, this first button has one first end points and at least two second end points, and this first end points couples this signal scanning line, and this at least two second end points selectivity couples this many barss output line.When pushing this first button, the output line of these at least two second end points correspondences has this first signal level.In addition, this output couples this many barss output line, and determines a key set code.
Can be further understood detailed description of the present invention and accompanying drawing by following execution mode about the advantages and spirit of the present invention.
Description of drawings
Figure 1A shows the schematic diagram of the input unit of prior art.
Figure 1B is the signal level of output line 562 and the tabulation of corresponding key set code that lists the input unit 5 of Figure 1A.
Fig. 2 shows the schematic diagram of the input unit of prior art.
Fig. 3 A shows the input unit schematic diagram according to a specific embodiment of the present invention.
Fig. 3 B shows the signal level of output line 162 and the tabulation of corresponding key set code of the input unit 1 of Fig. 3 A.
Fig. 4 A shows the input unit schematic diagram according to a specific embodiment of the present invention.
Fig. 4 B shows the signal level of output line 162 and the tabulation of corresponding key set code of the input unit 1 of Fig. 4 A.
Fig. 5 shows input unit 1 schematic diagram according to a specific embodiment of the present invention.
Fig. 6 shows input unit 1 schematic diagram according to a specific embodiment of the present invention.
Fig. 7 shows the schematic diagram according to the input unit of a specific embodiment of the present invention.
The reference numeral explanation
1,3,5,7: input unit
12,32: the first buttons
122,522,722: end points
124,136,326: conducting terminal
142,342,542,742: the signal scanning line
16,36,56,76: output
162a-162e, 362a-362e, 562a-562e, 762a-762e: output line
13,33: the second buttons
132,322,332,522a: first end points
134,324a-324c, 334,522b: second end points
18,362: detecting element
19,39: the first resistance
364: encoder
52,72: button
Embodiment
The invention provides a kind of input unit (Input apparatus).Several specific embodiments according to the present invention disclose as follows.
See also Fig. 3 A, Fig. 3 A shows the input unit schematic diagram according to a specific embodiment of the present invention.In this specific embodiment, input unit 1 according to the present invention comprises a signal scanning line 142, five bars output lines 162 (162a, 162b, 162c, 162d and 162e), an output 16 and four first buttons 12.
Further, signal scanning line 142 has one first signal level, and each bars output line 162a-162e all has a secondary signal level.This output 16 couples described output line 162, and output 16 determines a key set code according to the signal level of the described output line 162 that couples.Further see also Fig. 3 B, Fig. 3 B shows the signal level of output line 162 and the tabulation of corresponding key set code of the input unit 1 of Fig. 3 A.
In addition, each first button 12 in described first button 12 has three end points 122 and a conducting terminal 124, and one of them end points 122 couples this signal scanning line 142, and all the other end points 122 optionally couple this many barss output line 162.Especially, when pushing one of them first button 12, conducting terminal 124 touches described end points 122, and the end points 122 that causes these first button, 12 correspondences changes to first signal level with the level of corresponding output line 162.
For example, suppose signal scanning line 142 ground connection among Fig. 3 A, and have lower first signal level " 0 ", and each bars output line 162a-162e all has the secondary signal level " 1 " that is higher than first signal level.During first button of the rightmost side, conducting terminal 124 contacts with three end points 122 simultaneously in pushing Fig. 3 A, causes these three end points 122 and output line 162b and 162c all to have first signal level " 0 " identical with signal scanning line 142.And output line 162a-162e has signal level 1,0,0,1,1 respectively.Contrast Fig. 3 B, output 16 is " 5 " according to the key set code of described signal level decision.Again for example, in pushing Fig. 3 A during first button of the leftmost side, will make output line 162a and 162b all have first signal level " 0 " identical with signal scanning line 142.And output line 162a-162e has signal level 0,0,1,1,1 respectively.Contrast Fig. 3 B, output 16 is " 1 " according to the key set code of described signal level decision.
In other words, the five bars output lines 162 that specific embodiment was comprised that disclosed with Fig. 3 A are example, and output 16 can determine C25 totally ten key set codes.Compared to the existing input unit 5 that Figure 1A disclosed that comprises five bars output lines equally, only can determine five key set codes; And the existing input unit 7 that disclosed of Fig. 2 A, only can determine the six press keys sign indicating number, 1 key set code quantity that can determine of input unit of the present invention can significantly promote.
Please consult Fig. 4 A again, Fig. 4 A shows the input unit schematic diagram according to a specific embodiment of the present invention.In this specific embodiment, input unit 1 of the present invention can further comprise a plurality of second buttons 13.And each second button 13 has one first end points 132, one second end points 134 and a conducting terminal 136, and wherein, this first end points 132 couples this signal scanning line 142, and this second end points 134 optionally couples this many barss output line 162.In addition, when pushing wherein one second button 13, conducting terminal 136 touches this first end points 132 and this second end points 134, causes the output line 162 of these second end points, 134 correspondences to have this first signal level.Further see also Fig. 4 B, Fig. 4 B shows the signal level of output line 162 and the tabulation of corresponding key set code of the input unit 1 of Fig. 4 A.
For example, suppose that the signal scanning line 142 among Fig. 4 A has lower first signal level " 0 ", and each bars output line 162a-162e all has the secondary signal level " 1 " that is higher than first signal level.In pushing Fig. 4 A during second button 13 of the rightmost side, conducting terminal 136 contacts with this first end points 132 and second end points 134 simultaneously, causes these two end points 132,134 and output line 162b all to have first signal level " 0 " identical with signal scanning line 142.And output line 162a-162e has signal level 1,0,1,1,1 respectively.Contrast Fig. 4 B, output 16 is " 12 " according to the key set code of described signal level decision.
Further, the five bars output lines 162 that specific embodiment was comprised that disclosed with Fig. 4 A are example, and output 16 can determine
Totally ten five key set codes.Compared to aforesaid existing input unit 5,7,1 key set code quantity that can determine of input unit of the present invention can significantly promote.
Note that output line 162 level of the present invention and pairing key set code can look the system that input unit 1 is employed, as personal computer, photocopier, facsimile machine etc., and carry out suitable defaultly, is not the illustration that only is confined to the front.
See also Fig. 5, Fig. 5 shows input unit 1 schematic diagram according to a specific embodiment of the present invention.As shown in Figure 5, can further comprise a detecting element (Detecting device) 18 according to input unit 1 of the present invention, and this detecting element 18 is electrically connected to many barss output line 162 of the present invention, in order to detect the level of each output line 162a-162e.
See also Fig. 6, Fig. 6 shows input unit 1 schematic diagram according to a specific embodiment of the present invention.As shown in Figure 6, can further comprise a plurality of first resistance 19,, couple each bars output line 162a-162e respectively as current-limiting resistance according to input unit 1 of the present invention.And these a plurality of first resistance, 19 other ends couple a voltage source (not illustrating in the drawings), make output line 162 have the secondary signal level.
See also Fig. 7, Fig. 7 shows the schematic diagram according to the input unit of a specific embodiment of the present invention.In this specific embodiment, this input unit 3 comprises a signal scanning line 342, many (five) output lines 362, one first button 32, an output 36.In addition, this signal scanning line 342 (ground connection) has one first signal level; And this many barss output line 362 all has a secondary signal level.In actual applications, the visual demand of secondary signal level is higher or lower than first signal level.
In addition, first button 32 has one first end points 322 and at least two second end points 324 (in this specific embodiment, first button 32 has three second end points 324), and first end points 322 couples signal scanning line 342, (in this specific embodiment, the second end points 324a is coupled to output line 362b and second end points, 324 selectivity couple this many barss output line 362; The second end points 324b is coupled to output line 362d; The second end points 324c is coupled to output line 362a).
Especially, when pushing first button 32, the described second end points 324a, 324b, output line 362b, the 362d of 324c correspondence, 362a have first signal level.In addition, output 36 is coupled to described output line 362, and output 36 comprises detecting element 362 and encoder 364.Detecting element 362 is electrically connected to described output line 362, in order to detect the level of each output line 362a-362e.364 of this encoders can be in order to storing a plurality of key set codes and corresponding a plurality of signal levels, and the signal level of the described bars output line 362 that this encoder 364 can be detected according to detecting element 362 determines a key set code.
In this specific embodiment, first button 32 also comprises a conducting terminal 326.When pushing first button 32, conducting terminal 326 touches first end points 322 and second end points 324, causes the output line 362 of second end points, 324 correspondences to have this first signal level.
In this specific embodiment, input unit 3 of the present invention also comprises at least one second button 33.And described second button 33 has one first end points 332 and one second end points 334.This first end points 332 couples this signal scanning line 342, and this second end points 334 one of optionally couples in this many barss output line 362 (362e).When pushing this second button 33, the output line 362e of these second end points, 334 correspondences has first signal level.
In this specific embodiment, input unit 3 of the present invention also comprises a plurality of first resistance 39, as current-limiting resistance, couple each bars output line 362 respectively and this a plurality of first resistance, 39 other ends couple a voltage source (not illustrating in the drawings), make described output line 362 have this secondary signal level.
Please note, output line 362 numbers of the present invention, first button 32 with and second end points, 324 numbers that comprised, second button 33 with and all visual demands such as second end points, 334 numbers that comprised adjust, be not limited to the illustrated number of this specific embodiment.
As previously mentioned, the input unit that is disclosed compared to existing skill have bigger elasticity according to the input unit of this specific embodiment, and its key set code quantity that can determine can promote significantly.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (15)
1. input unit comprises:
One signal scanning line, this signal scanning line has one first signal level;
Many barss output line, this many barss output line all has a secondary signal level;
One output couples this many barss output line, and this output determines a key set code according to the signal level that couples many barss output line; And
A plurality of first buttons, each first button has at least three end points, and one of them end points couples this signal scanning line, and all the other end points optionally couple this many barss output line;
Wherein, when pushing one first button, the end points of this first button correspondence has this first signal level with corresponding output line,
Wherein, each first button in these a plurality of first buttons more comprises a conducting terminal, and first button is stressed when pressing down when this, and this conducting terminal touches this at least three end points, causes the level of corresponding output line to change to this first signal level.
2. input unit as claimed in claim 1, wherein, this secondary signal level is higher than this first signal level.
3. input unit as claimed in claim 1, this input unit more comprises:
A plurality of second buttons, each second button have one first end points and one second end points, and wherein this first end points couples this signal scanning line, and this second end points optionally couples this many barss output line;
Wherein, when pushing one second button, the output line of this second end points correspondence has this first signal level.
4. input unit as claimed in claim 1, wherein, this output more comprises a detecting element, is electrically connected to many barss output line, in order to detect the level of each output line.
5. input unit as claimed in claim 1, wherein, this signal scanning line ground connection.
6. input unit as claimed in claim 1 comprises that more a plurality of first resistance couple each bars output line respectively and this a plurality of first resistance other ends couple a voltage source, makes described output line have this secondary signal level.
7. input unit as claimed in claim 6, wherein, described first resistance is current-limiting resistance.
8. input unit comprises:
One signal scanning line, this signal scanning line has one first signal level;
Many barss output line, this many barss output line all has a secondary signal level;
One first button, this first button has one first end points and at least two second end points, this first end points couples this signal scanning line, this at least two second end points selectivity couples this many barss output line, wherein when pushing this first button, the output line of these at least two second end points correspondences has this first signal level; And
One output couples this many barss output line, and determines a key set code,
Wherein, each button in this first button more comprises a conducting terminal, wherein, and when pushing this first button, this conducting terminal touches this first end points and this at least two second end points, causes the output line of these at least two second end points correspondences to have this first signal level.
9. input unit as claimed in claim 8, this output more comprises:
One encoder stores a plurality of key set codes and corresponding a plurality of signal levels, and this encoder determines a key set code according to the signal level that couples many barss output line.
10. input unit as claimed in claim 8, wherein, this secondary signal level is higher than this first signal level.
11. input unit as claimed in claim 8, this input unit more comprises:
A plurality of second buttons, each second button have one first end points and one second end points, and wherein, this first end points couples this signal scanning line, and this second end points optionally couples this many barss output line;
Wherein, when pushing one second button, the output line of this second end points correspondence has this first signal level.
12. input unit as claimed in claim 8, wherein, this output more comprises a detecting element, is electrically connected to many barss output line, in order to detect the level of each output line.
13. input unit as claimed in claim 8, wherein, this signal scanning line ground connection.
14. input unit as claimed in claim 8 comprises that more a plurality of first resistance couple each bars output line respectively and this a plurality of first resistance other ends couple a voltage source, makes described output line have this secondary signal level.
15. input unit as claimed in claim 14, wherein, described first resistance is current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101051848A CN101312341B (en) | 2007-05-24 | 2007-05-24 | Input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101051848A CN101312341B (en) | 2007-05-24 | 2007-05-24 | Input device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101312341A CN101312341A (en) | 2008-11-26 |
| CN101312341B true CN101312341B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101051848A Expired - Fee Related CN101312341B (en) | 2007-05-24 | 2007-05-24 | Input device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101312341B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206010Y (en) * | 1994-10-21 | 1995-08-23 | 旋永南 | Digital multi-address controller for electrical switch |
| US5870696A (en) * | 1996-07-25 | 1999-02-09 | Randolph; Glenn Edgar | Method and apparatus for monitoring and recording real time data of a paper printing production machine |
| CN1504992A (en) * | 2002-11-28 | 2004-06-16 | 华邦电子股份有限公司 | Keyboard scanning circuit and method |
| CN1536467A (en) * | 2003-04-11 | 2004-10-13 | 乐金电子(天津)电器有限公司 | Key input circuit |
| US20060132331A1 (en) * | 2004-12-22 | 2006-06-22 | Lg Electronics Inc. | Apparatus and method for decoding a key press |
-
2007
- 2007-05-24 CN CN2007101051848A patent/CN101312341B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206010Y (en) * | 1994-10-21 | 1995-08-23 | 旋永南 | Digital multi-address controller for electrical switch |
| US5870696A (en) * | 1996-07-25 | 1999-02-09 | Randolph; Glenn Edgar | Method and apparatus for monitoring and recording real time data of a paper printing production machine |
| CN1504992A (en) * | 2002-11-28 | 2004-06-16 | 华邦电子股份有限公司 | Keyboard scanning circuit and method |
| CN1536467A (en) * | 2003-04-11 | 2004-10-13 | 乐金电子(天津)电器有限公司 | Key input circuit |
| US20060132331A1 (en) * | 2004-12-22 | 2006-06-22 | Lg Electronics Inc. | Apparatus and method for decoding a key press |
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| Publication number | Publication date |
|---|---|
| CN101312341A (en) | 2008-11-26 |
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