CN102904562A - Multisampling frequency circuit and multisampling frequency method - Google Patents
Multisampling frequency circuit and multisampling frequency method Download PDFInfo
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- CN102904562A CN102904562A CN2011102144032A CN201110214403A CN102904562A CN 102904562 A CN102904562 A CN 102904562A CN 2011102144032 A CN2011102144032 A CN 2011102144032A CN 201110214403 A CN201110214403 A CN 201110214403A CN 102904562 A CN102904562 A CN 102904562A
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Abstract
The invention provides a multisampling frequency circuit and a multisampling frequency method which are applicable to a touch device. The multisampling frequency circuit comprises a transmitter, a receiver, a plurality of clock pulse generators and a switcher, wherein the transmitter is used for transmitting a detection signal to the touch device according to a working sampling frequency, the receiver is used for receiving a position signal from the touch device according to the working sampling frequency, the clock pulse generators are used for generating multiple sampling frequencies, and the switcher is used for selecting one of the clock pulse generators as a working clock pulse generator according to a switching signal and outputting the working sampling frequency generated by the working clock pulse generator to the transmitter and the receiver. Success rate of reading is increased by the aid of the multiple sampling frequencies, and use fluency of the touch device is improved.
Description
Technical field
The present invention relates to a kind of multiple sampling frequency circuit, relate in particular to the multiple sampling frequency circuit that is applicable to contactor control device.
Background technology
In traditional contact panel (touch penal) design, control circuit according to a sampling frequency (sampling rate) from touch-control sensor (touch sensor) read signal.(for example: the voltage cycle of mobile phone signal, 60Hz), control circuit will be adjusted sampling frequency to avoid read error when various interference sources produce.
Fig. 1 is the procedure chart that shows the control circuit adjustment sampling frequency of known contact panel.At the beginning, sampling frequency is Frequency point f1 (frequency range among Fig. 1 represents Frequency point f1 and also can be the Gaussian Profile frequency range centered by Frequency point f1).When the control circuit discovery signals is interfered, sampling frequency is adjusted into Frequency point f2.If signal still is interfered, then again sampling frequency is adjusted into Frequency point f3, the rest may be inferred.
Yet in the process of adjusting sampling frequency, control circuit can't read any signal by touch-control sensor, and this will cause the slack use experience of user.
Summary of the invention
In order to address the above problem, the invention provides a kind of multiple sampling frequency circuit, utilize a plurality of sampling frequencies to improve and read successful probability, increased the use fluency of contactor control device.
The invention provides a kind of multiple sampling frequency circuit, be applicable to a contactor control device, comprising: a reflector, in order to transmit a detection signal according to a working sampling frequency to above-mentioned contactor control device; One receiver is in order to receive the position signalling from above-mentioned contactor control device according to above-mentioned working sampling frequency; A plurality of gate generators are in order to produce a plurality of sampling frequencies; And a switch, switch signal according to one, select one of above-mentioned gate generator as a work clock pulse generator, and the above-mentioned working sampling frequency of exporting above-mentioned work clock pulse generator is to above-mentioned reflector and above-mentioned receiver.
In addition, the invention provides a kind of multiple sampling frequency approach, be applicable to a contactor control device, comprising: produce a plurality of sampling frequencies; And according to a switching signal, select one of above-mentioned sampling frequency as a working sampling frequency, and export above-mentioned working sampling frequency to a reflector and a receiver, wherein above-mentioned reflector arrives above-mentioned contactor control device in order to transmit a detection signal according to above-mentioned working sampling frequency, and above-mentioned receiver is in order to receive the position signalling from above-mentioned contactor control device according to above-mentioned working sampling frequency.
The present invention utilizes a plurality of sampling frequencies to improve and reads successful probability, has increased the use fluency of contactor control device.
Description of drawings
Fig. 1 is the procedure chart that shows the control circuit adjustment sampling frequency of known contact panel;
Fig. 2 is the schematic diagram that shows according to the described multiple sampling frequency circuit of one embodiment of the invention;
Fig. 3 A is the schematic diagram that shows according to the described multiple sampling frequency circuit of another embodiment of the present invention;
Fig. 3 B is the schematic diagram that shows according to the sense cycle of the described multiple sampling frequency circuit of another embodiment of the present invention;
Fig. 4 is the flow chart that shows according to the described multiple sampling frequency approach of one embodiment of the invention;
Fig. 5 is the flow chart that shows according to the described multiple sampling frequency approach of another embodiment of the present invention.
Wherein, description of reference numerals is as follows:
200,300～multiple sampling frequency circuit;
202～contactor control device;
204～reflector;
206～receiver;
208-1,208-2 ..., 208-N～gate generator;
210～switch;
212～microcontroller;
400,500～flow chart;
A1～detection signal;
A2～position signalling;
CLK1, CLK2 ..., CLKN～sampling frequency;
CLKO～working sampling frequency;
F1, f2, f3～Frequency point;
SF～Frequency Hopping Signal;
SR～repayment signal;
SS～switching signal;
T1, T2, T3, T4, T5, T6, T7, T8～sense cycle;
TX～adjustment time.
Embodiment
Fig. 2 is the schematic diagram that shows according to the described multiple sampling frequency circuit 200 of one embodiment of the invention.As shown in Figure 2, multiple sampling frequency circuit 200 goes for contactor control device 202, and comprise: reflector 204, receiver 206, a plurality of gate generator 208-1,208-2 ..., 208-N (N is the positive integer more than or equal to 2), switch 210, and microcontroller 212.Contactor control device 202 can comprise contact panel, touch-control sensor etc.
In addition, microcontroller 212 can receive the repayment signal SR from receiver 206, and determine whether transmit Frequency Hopping Signal SF to the work clock pulse generator according to repayment signal SR, for example: if (for example: position signalling A2 was incorrect voltage level when the position signalling A2 that repayment signal SR indication receives was interfered, or position signalling A2 indication surpasses the position of touch number of the upper limit), microcontroller 212 namely transmits the work clock pulse generator that Frequency Hopping Signal SF selected to this moment.In the process that present work clock pulse generator is adjusted frequency, switch 210 also can be selected another untapped gate generator again, work on as new work clock pulse generator, the process of adjusting frequency with minimizing is for the impact of whole system.Frequency Hopping Signal SF can pass to separately the work clock pulse generator, also can pass to simultaneously a plurality of gate generator 208-1,208-2 ..., 208-N, but the work clock pulse generator that only has select this moment can this signal of interpretation.When the work clock pulse generator of selecting received Frequency Hopping Signal SF, the work clock pulse generator was converted to second frequency with working sampling frequency CLKO by first frequency, and wherein first frequency is different with second frequency.If second frequency still is disturbed, the work clock pulse generator also can switch to the 3rd different frequencies, the 4th frequency with working sampling frequency CLKO again, and the rest may be inferred.
Fig. 3 A is the schematic diagram that shows according to the described multiple sampling frequency circuit 300 of another embodiment of the present invention.Fig. 3 B is the schematic diagram that shows according to the sense cycle of the described multiple sampling frequency circuit 300 of another embodiment of the present invention.Below will be with among Fig. 3 A, Fig. 3 B, N equals 2 example and describes the present invention in detail.
Multiple sampling frequency circuit 300 only comprises two gate generator 208-1,208-2, and microcontroller 212 produces control signal SS, makes switch 210 select in turn gate generator 208-1,208-2 as the work clock pulse generator.
Shown in Fig. 3 B, according to the time order and function order, multiple sampling frequency circuit 300 different sense cycle T1, T2 ..., select in turn sampling frequency CLK1, CLK2 as working sampling frequency CLKO among the T8.In odd number sense cycle (odd frame) T1, T3, T5, T7, working sampling frequency CLKO is sampling frequency CLK1; And in even number sense cycle (even frame) T2, T4, T6, T8, working sampling frequency CLKO is sampling frequency CLK2.Sense cycle T1 herein, T2 ..., T8 only for convenience of description, in fact more sense cycle can be arranged.It should be noted that and select in turn the mode of sampling frequency to be not limited to this that in other embodiment of the present invention, it is working sampling frequency CLKO that multiple sampling frequency circuit 300 also can be selected sampling frequency CLK1 in sense cycle T1, T2, T5, T6; And selection sampling frequency CLK2 is working sampling frequency CLKO in sense cycle T3, T4, T7, T8.
For instance, in sense cycle T1, reflector 204 transmits detection signal A1 to contactor control device 202 according to sampling frequency CLK1, and receiver 206 is also according to the position signalling A2 of sampling frequency CLK1 reception from contactor control device 202.If receiver 206 finds that position signalling A1 is interfered, send back the number of notifying SR and make microcontroller 212 transmit Frequency Hopping Signal SF to work clock pulse generator at this moment, i.e. clock pulse generator 208-1.Gate generator 208-1 namely begins to adjust sampling frequency CLK1, is converted to second frequency by first frequency.The time that adjustment process spends is for adjusting time T X, during this section in, gate generator 208-1 can't produce correct sampling frequency.Shown in Fig. 3 B, gate generator 208-1 just adjusts sampling frequency CLK1 success when sense cycle T6, and therefore, in sense cycle T3, T5, multiple sampling frequency circuit 300 can't be obtained according to sampling frequency CLK1 user's touch information.Yet multiple sampling frequency circuit 300 still can be obtained user's touch information according to sampling frequency CLK2 in sense cycle T2, T4, has reduced the negative effect of adjusting during the time T X.
Because the chance that is interfered simultaneously of a plurality of sampling frequencies is low far beyond single sampling frequency, multiple sampling frequency circuit provided by the present invention can allow the more smooth use contactor control device of user.
Fig. 4 is the flow chart 400 that shows according to the described multiple sampling frequency approach of one embodiment of the invention, and this multiple sampling frequency approach is applicable to contactor control device.As shown in Figure 4, at first begin, at step S402, produce a plurality of sampling frequencies.Then, at step S404, according to switching signal, select one of a plurality of sampling frequencies as the working sampling frequency, and the output services sampling frequency is to reflector and receiver, wherein reflector is in order to transmitting detection signal to contactor control device according to the working sampling frequency, and receiver is in order to according to the position signalling of working sampling frequency reception from contactor control device.On the other hand, a plurality of sampling frequencies can be in different sense cycle, and order is selected as respectively the working sampling frequency successively.At step S406, receive the repayment signal from receiver, and whether the indicating positions signal is interfered to judge the repayment signal? if be interfered, at step S408, the working sampling frequency is converted to second frequency by first frequency; If interference-free, at step S410, the maintenance work sampling frequency is first frequency, and flow process finishes.
Fig. 5 is the flow chart 500 that shows according to the described multiple sampling frequency approach of another embodiment of the present invention, and this multiple sampling frequency approach is applicable to contactor control device.As shown in Figure 5, at first begin, at step S510, produce a plurality of sampling frequencies.Then, at step S520, according to switching signal, select one of a plurality of sampling frequencies as the working sampling frequency, and the output services sampling frequency arrives reflector and receiver, the flow process end.Wherein reflector is in order to transmitting detection signal to contactor control device according to the working sampling frequency, and receiver is in order to according to the position signalling of working sampling frequency reception from contactor control device.
Though the present invention discloses as above with preferred embodiment; so it is not to limit scope of the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the scope that claim defines.
Claims (9)
1. a multiple sampling frequency circuit is applicable to a contactor control device, comprising:
One reflector is in order to transmit a detection signal to above-mentioned contactor control device according to a working sampling frequency;
One receiver is in order to receive the position signalling from above-mentioned contactor control device according to above-mentioned working sampling frequency;
A plurality of gate generators are in order to produce a plurality of sampling frequencies; And
One switch, be coupled to described a plurality of gate generator, in order to switch signal according to one, select one of described a plurality of gate generators as a work clock pulse generator, and the above-mentioned working sampling frequency of exporting above-mentioned work clock pulse generator is to above-mentioned reflector and above-mentioned receiver.
2. multiple sampling frequency circuit as claimed in claim 1 also comprises:
One microcontroller, in order to produce above-mentioned switching signal, and reception is from a repayment signal of above-mentioned receiver, whether to transmit a Frequency Hopping Signal according to above-mentioned repayment signal deciding to above-mentioned work clock pulse generator, if wherein the above-mentioned position signalling of above-mentioned repayment signal designation is interfered, then above-mentioned microcontroller transmits above-mentioned Frequency Hopping Signal to above-mentioned work clock pulse generator.
3. multiple sampling frequency circuit as claimed in claim 2, wherein above-mentioned microcontroller is also in order to produce above-mentioned switching signal.
4. multiple sampling frequency circuit as claimed in claim 2, if wherein above-mentioned work clock pulse generator receives above-mentioned Frequency Hopping Signal, then above-mentioned work clock pulse generator is converted to a second frequency with above-mentioned working sampling frequency by a first frequency, and wherein above-mentioned first frequency is different with above-mentioned second frequency.
5. multiple sampling frequency circuit as claimed in claim 1, wherein above-mentioned switch is according to above-mentioned switching signal, and order selects respectively above-mentioned gate generator as above-mentioned work clock pulse generator successively.
6. a multiple sampling frequency approach is applicable to a contactor control device, comprising:
Produce a plurality of sampling frequencies; And
According to a switching signal, select one of above-mentioned sampling frequency as a working sampling frequency, and export above-mentioned working sampling frequency to a reflector and a receiver;
Wherein above-mentioned reflector arrives above-mentioned contactor control device in order to transmit a detection signal according to above-mentioned working sampling frequency, and above-mentioned receiver is in order to receive the position signalling from above-mentioned contactor control device according to above-mentioned working sampling frequency.
7. multiple sampling frequency approach as claimed in claim 6 also comprises:
Reception is repaid signal from one of above-mentioned receiver, and whether above-mentioned working sampling frequency is converted to a second frequency by a first frequency according to above-mentioned repayment signal deciding, and wherein above-mentioned first frequency is different with above-mentioned second frequency.
8. multiple sampling frequency approach as claimed in claim 6 if wherein the above-mentioned position signalling of above-mentioned repayment signal designation is interfered, then determines above-mentioned working sampling frequency is converted to above-mentioned second frequency by above-mentioned first frequency.
9. multiple sampling frequency approach as claimed in claim 6, wherein above-mentioned sampling frequency successively order be selected as respectively above-mentioned working sampling frequency.
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Cited By (3)
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| CN106814924A (en) * | 2015-11-27 | 2017-06-09 | 原相科技股份有限公司 | Signal sampling method and sensing system |
| CN111541451A (en) * | 2020-06-23 | 2020-08-14 | 深圳比特微电子科技有限公司 | Method and clock circuit for up-converting a clock signal |
| CN115267327A (en) * | 2022-07-25 | 2022-11-01 | 青岛艾诺智能仪器有限公司 | Harmonic measuring device and method for synchronous tracking |
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| CN111541451A (en) * | 2020-06-23 | 2020-08-14 | 深圳比特微电子科技有限公司 | Method and clock circuit for up-converting a clock signal |
| CN111541451B (en) * | 2020-06-23 | 2021-10-29 | 深圳比特微电子科技有限公司 | Method and clock circuit for up-converting a clock signal |
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| CN115267327A (en) * | 2022-07-25 | 2022-11-01 | 青岛艾诺智能仪器有限公司 | Harmonic measuring device and method for synchronous tracking |
| CN115267327B (en) * | 2022-07-25 | 2023-04-11 | 青岛艾诺智能仪器有限公司 | Harmonic wave measuring device and method for synchronous tracking |
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