CN100458550C - A charging pulse generator, exposure generating device therefor, and charging pulse output method - Google Patents
A charging pulse generator, exposure generating device therefor, and charging pulse output method Download PDFInfo
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- CN100458550C CN100458550C CNB2003101172401A CN200310117240A CN100458550C CN 100458550 C CN100458550 C CN 100458550C CN B2003101172401 A CNB2003101172401 A CN B2003101172401A CN 200310117240 A CN200310117240 A CN 200310117240A CN 100458550 C CN100458550 C CN 100458550C
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Abstract
The invention discloses a kind of charging pulse generator for exposure generating device referring to digital imaging field. It includes a frequency divider and a frequency doubler for receiving the standard clock signal, it also includes a pulse control unit and an erasable memory unit, the erasable memory unit receives the written charging pulse character number, the frequency divider and the frequency doubler, and the pulse control unit acts according to the received character number, in order to generate the needed charging pulse. The project in the invention may be applied to different charger, when using variable chargers, the invention can program the needed condition according to the demands of the charger in advance, and then opens the charging pulse generator to acquire the charging pulse, it also can change the parameter through programming. The invention also discloses the method.
Description
Technical field
The present invention relates to the digital vedio recording field, particularly a kind of charging pulse generator of the generating means that is used for exposing, and based on the exposure generating means of this charging pulse generator and the method for charging pulse output.
Background technology
In the prior art, usually all to use the charging pulse generator in the exposure system of digital camera, generally be when needs expose, produce charging pulse by the charging pulse generator earlier and give charging device, after finishing, charging can provide the signal that finishes that charges, show by LED that generally camera sends to expose to ordering again and exposes then.Pulse producer has a variety of, generally is by obtaining needed pulse for a reference clock frequency division or frequency multiplication.
Accompanying drawing 1 is depicted as a kind of charging pulse generator wherein, it includes a frequency division, frequency multiplier, described frequency division, frequency multiplier are converted into the frequency doubling clock faster than original reference clock with original reference clock, or the frequency-dividing clock slower than original reference clock, the clock that newly obtains can be used as charging pulse.
Different chargers needs the charging pulse of different frequency, different duty, opposed polarity, the shortcoming of charging pulse generator is to adjust the width, polarity, dutycycle etc. of charging pulse according to user's demand in the above-mentioned prior art, so also just can't carefully adjust the various parameters of charging, and then can not make charging process reach optimum, when different chargers needed the pulse of different qualities value, above-mentioned charging pulse generator just can not be achieved.
Summary of the invention
In order to solve problems of the prior art and deficiency, the objective of the invention is to propose a kind of charging pulse generator that has improved, it can adjust charge parameter at any time according to user's needs, to reach perfect charging effect;
Another object of the present invention is to propose a kind of exposure generating means that can carry out programming Control to charging process;
Another object of the present invention is to propose a kind of method of cline frequency charging pulse output.
In order to realize the foregoing invention purpose, the present invention proposes following technical scheme:
A kind of charging pulse generator, comprise frequency division, a frequency multiplier that receives reference clock signal, its characteristics are, also comprise a pulse control unit and an erasable storage unit, erasable storage unit receives the outside charging pulse characteristic value that writes, and described frequency division, frequency multiplier and described pulse control unit carry out associative operation based on the charging pulse characteristic value that erasable storage unit receives; Pulse control unit receives through frequency division, frequency multiplier and carries out the signal after the frequency processing, and handles according to the pulse signals that requires of above-mentioned charging pulse characteristic value, to produce the charging pulse that needs.
Can comprise one or more in counter, pulse upset arbiter, the upset controller in the described pulse control unit.
Described erasable storage unit includes the storage area corresponding to above-mentioned frequency division, frequency multiplier, counter, pulse upset arbiter, upset controller, and those storage areas are respectively applied for the above-mentioned frequency division frequency multiplier of storage, counter, pulse upset arbiter, the pairing frequency division parameter of upset controller, frequency values, dutyfactor value and polarity number.
A kind of exposure generating means comprises a CPU, an exposed pulse generator and an exposure generator, and its characteristics are, also comprise an above-mentioned charging pulse generator; CPU sends the charging pulse characteristic value to the charging pulse generator, the charging pulse generator adjusts the charging pulse with certain polarity, frequency, dutycycle and sends to the exposure generator according to these characteristic values, CPU charging finishing signal is given in exposure generator charging finishing back, CPU sends the exposure instruction to the exposed pulse generator then, the exposed pulse generator produces an exposure trigger pulse and gives the exposure generator, and the exposure generator carries out exposing operation.
A kind of method of charging pulse output comprises:
Main frame generates a charging pulse characteristic value sequence according to the requirement of charger;
Give the charging pulse generator with these characteristic value sequences then;
The charging pulse generator generates the stream of pulses of these charger needs according to these charging pulse characteristic value sequences.
What the charging pulse characteristic value sequence that described main frame generates was that main frame sends in different time that different charging pulse characteristic values forms is the charging pulse characteristic value sequence of parameter with time.
The contrast prior art the invention has the advantages that:
Scheme provided by the present invention, go for different chargers, when using different chargers, can write out the condition of required pulse in advance according to the requirement of charger, open the charging pulse generator then and just can obtain required charging pulse, and can change the parameter of charging pulse at any time by programming.
But advantage of the present invention is not limited to the above-mentioned application of lifting, below in conjunction with accompanying drawing be not that certain embodiments comes the utility model is done more detailed explanation.
Description of drawings
Fig. 1 is a kind of charging pulse generator in the prior art;
Fig. 2 is a charging pulse generator of realizing trickle charge pulse output in the prior art;
Fig. 3 is the structural representation of charging pulse generator of the present invention;
Fig. 4 is the synoptic diagram of embodiment one of the present invention;
Fig. 5 is the synoptic diagram of embodiment two of the present invention;
Fig. 6 is the synoptic diagram of embodiment three of the present invention;
Fig. 7 is the embodiment synoptic diagram of exposure generating means of the present invention;
Fig. 8 is the synoptic diagram of the method for the invention;
Fig. 9 is the charging pulse characteristic value sequence synoptic diagram that charging pulse generator of the present invention receives;
Figure 10 is the 9kHZ that obtains of the present invention, the synoptic diagram of 1/10 dutycycle charging pulse.
Embodiment
In the following description, known function or structure will no longer describe in detail, to avoid there be unnecessary obscuring with content of the present invention.
As shown in Figure 3, structural drawing for charging pulse generator of the present invention, comprise frequency division, a frequency multiplier 30 that receives reference clock signal, a pulse control unit 20 and an erasable storage unit 10, erasable storage unit 10 receives the outside charging pulse characteristic value that writes, and frequency division, frequency multiplier 30 and pulse control unit 20 carry out associative operation based on above-mentioned charging pulse characteristic value; Pulse control unit 20 receives through frequency division, frequency multiplier 30 and carries out the signal after the frequency processing, and handles according to the pulse signals that requires of above-mentioned charging pulse characteristic value, to produce the charging pulse that needs; Wherein can include one or more in counter, pulse upset arbiter, the upset controller in the pulse control unit 20, described in following embodiment.
Embodiment one
As shown in Figure 4, the erasable storage unit 10 in the charging pulse generator includes storer 13 and storer 14, includes a counter 21 in the pulse control unit 20; Wherein storer 13 receives the charging pulse frequency values that CPU or other host provide, and storer 14 receives the frequency division parameter that CPU or other host provide.
The frequency division parameter that frequency division, frequency multiplier 30 receives reference clock signals and receive according to storer 14 obtains the reference clock of internal request; By the charging pulse frequency values that storer 13 receives, counter 21 can produce a cycle values that is the circulation step-length with certain reference clock number, like this since, present embodiment just can produce has as required had the charging pulse of certain frequency.
Embodiment two
As shown in Figure 5, the erasable storage unit 10 in the charging pulse generator includes storer 11 and storer 12, includes a pulse upset arbiter 22 and a upset controller 23 in the pulse control unit 20; Wherein storer 11 receives the charging pulse polarity number that CPU or other host provide, and storer 12 receives the charge pulse duty cycle value that CPU or other host provide.
Frequency division, frequency multiplier 30 receive reference clock signal and obtain the reference clock of internal request by fixing frequency division frequency parameter; The charge pulse duty cycle value that pulse upset arbiter 22 receives according to the internal reference clock and the storer 12 of frequency division, frequency multiplier 30 is controlled charging pulse needs upset when; The charging pulse polarity number that the controller 23 that overturns then receives according to storer 11 obtains the charging pulse of required polarity, like this since, present embodiment just can produce charging pulse with certain polarity and dutycycle as required.
Embodiment three
As shown in Figure 6, erasable storage unit 10 in the charging pulse generator includes storer 11, storer 12, storer 13 and storer 14, includes a counter 21, a pulse upset arbiter 22 and a upset controller 23 in the pulse control unit 20; Wherein storer 11 receives the charging pulse polarity number that CPU or other host provide, the charge pulse duty cycle value that storer 12 reception CPU or other host provide, the charging pulse frequency values that storer 13 reception CPU or other host provide, the frequency division parameter that storer 14 reception CPU or other host provide.
The frequency division parameter that frequency division, frequency multiplier 30 receives reference clock signals and receive according to storer 14 obtains the reference clock of internal request; By the charging pulse frequency values that storer 13 receives, counter 21 can produce a cycle values that is the circulation step-length with certain reference clock number; The charge pulse duty cycle value that pulse upset arbiter 22 receives according to the cycle values that obtains from counter 21 and storer 12 is controlled charging pulse needs upset when; The signal that charging pulse polarity number that the controller 23 that overturns then receives according to storer 11 and pulse upset arbiter 22 send carries out polarity and judges the charging pulse that obtains required polarity, like this, present embodiment just can produce as required have certain frequency, the charging pulse of polarity and dutycycle.
Embodiment four
Expose the as shown in Figure 7 specific embodiment of generating means comprises a CPU100, an exposed pulse generator 400 and an exposure generator 300, also comprises an embodiment of the invention three described charging pulse generators 200.
CPU100 is used for sending control command, promptly sends the charging pulse characteristic value to charging pulse generator 200; The frequency that charging pulse generator 200 provides according to CPU100, polarity to charging pulse, the requirement of dutycycle produces the charging pulse that needs, and exposure generator 300 is charged; 300 chargings of CPU100 indication exposure generator can be sent the charging signal that finishes and giving CPU100 after exposure generator 300 charges electricity, CPU100 obtains charging and finishes that control exposed pulse generator 400 sends exposed pulse behind the signal; Exposure trigger generator 400 produces the exposed pulse that needs, and indication exposure generator 300 is finished exposure.
The synoptic diagram of the method for the invention shown in Figure 8, can see, main frame is worked out out a charge pulse duty cycle value, charging pulse polarity number, charging pulse frequency values sequence according to the requirement of different chargers, and the charging pulse generator generates the stream of pulses of different charger needs according to these charging pulse characteristic value sequences.What the charging pulse characteristic value sequence that described main frame generates was that main frame sends in different time that different charging pulse characteristic values forms is the charging pulse characteristic value sequence of parameter with time.
Fig. 9 is the charging pulse characteristic value sequence synoptic diagram that charging pulse generator of the present invention receives, shown in the polarity of charging pulse be that positive pulse is effective, at 0 to 0.5 second, receive the stream of pulses of a 9kHZ, 1/10 dutycycle, at 0.5 to 1 second, receive the stream of pulses of a 10kHZ, 1/9 dutycycle, the rest may be inferred.Figure 10 is the 9kHZ that obtains of the present invention, the synoptic diagram of 1/10 dutycycle charging pulse, as figure, we can produce the internal reference clock of a 90kHZ earlier, be benchmark with 90kHZ internal reference clock then, the positive pulse of a 90kHZ internal reference of per 10 90kHZ internal reference clock generating clock width so just obtains 9kHZ, the charging pulse of 1/10 dutycycle, scope also can same method be made At All Other Times.
In sum, charging pulse generator of the present invention, and based on the exposure generating means of this charging pulse generator and the method for charging pulse output, be not limited to listed utilization in instructions and the embodiment, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the present invention is not limited to specific details, representational equipment and the examples shown that illustrates here and describe.
Claims (11)
1, a kind of charging pulse generator comprises frequency division, a frequency multiplier that receives reference clock signal, it is characterized in that, also comprises a pulse control unit and an erasable storage unit; Erasable storage unit receives the outside charging pulse characteristic value that writes, and described frequency division, frequency multiplier and described pulse control unit carry out associative operation based on the charging pulse characteristic value that erasable storage unit receives; Pulse control unit receives through frequency division, frequency multiplier and carries out the signal after the frequency processing, and handles according to the pulse signals that requires of above-mentioned charging pulse characteristic value, to produce the charging pulse that needs.
2, charging pulse generator according to claim 1 is characterized in that, described pulse control unit comprises a counter, includes the storer that corresponds respectively to described counter and frequency division, frequency multiplier in the described erasable storage unit; Storer corresponding to frequency division, frequency multiplier receives the outside frequency division parameter that transmits, corresponding to the outside charging pulse frequency values that transmits of storer reception of counter; Frequency division, frequency multiplier receive reference clock signal and obtain the internal reference clock according to above-mentioned frequency division parameter; Counter is according to the internal reference clock that above-mentioned charging pulse frequency values and frequency division, frequency multiplier produce, the cycle values that to produce be the circulation step-length with certain reference clock number.
3, charging pulse generator according to claim 2 is characterized in that, described pulse control unit further comprises a pulse upset arbiter, further includes the storer corresponding to described pulse upset arbiter in the described erasable storage unit; Described storer corresponding to pulse upset arbiter receives the outside charge pulse duty cycle value that transmits, and the charge pulse duty cycle value that described pulse upset arbiter receives according to the cycle values that obtains from described counter and above-mentioned storer is controlled charging pulse needs upset when.
4, charging pulse generator according to claim 3 is characterized in that, described pulse control unit further comprises a upset controller, further includes the storer corresponding to described upset controller in the described erasable storage unit; Described storer corresponding to the controller that overturns receives the outside charging pulse polarity number that transmits, and described upset controller carries out the charging pulse that the polarity judgement obtains required polarity according to the signal of described charging pulse polarity number and the transmission of pulse upset arbiter.
5, charging pulse generator according to claim 2 is characterized in that, described pulse control unit further comprises a upset controller, further includes the storer corresponding to described upset controller in the described erasable storage unit; Described storer corresponding to the upset controller receives the outside charging pulse polarity number that transmits, and described upset controller carries out the charging pulse that the polarity judgement obtains required polarity according to described charging pulse polarity number with from the cycle values that described counter obtains.
6, charging pulse generator according to claim 1 is characterized in that, described pulse control unit comprises a pulse upset arbiter, further includes the storer corresponding to described pulse upset arbiter in the described erasable storage unit; Described storer corresponding to pulse upset arbiter receives the outside charge pulse duty cycle value that transmits, the internal reference clock control that described pulse upset arbiter produces according to described charge pulse duty cycle value and frequency division, frequency multiplier charging pulse needs upset when.
7, charging pulse generator according to claim 6 is characterized in that, described pulse control unit further comprises a upset controller, further includes the storer corresponding to described upset controller in the described erasable storage unit; Described storer corresponding to the controller that overturns receives the outside charging pulse polarity number that transmits, and described upset controller carries out the charging pulse that the polarity judgement obtains required polarity according to the signal of described charging pulse polarity number and the transmission of pulse upset arbiter.
8, charging pulse generator according to claim 1 is characterized in that, described pulse control unit comprises a upset controller, further includes the storer corresponding to described upset controller in the described erasable storage unit; Described storer corresponding to the upset controller receives the outside charging pulse polarity number that transmits, and the internal reference clock that described upset controller produces according to described charging pulse polarity number and frequency division, frequency multiplier carries out polarity and judges the charging pulse that obtains required polarity.
9, a kind of exposure generating means comprises a CPU, an exposed pulse generator and an exposure generator, it is characterized in that, also comprises one from 1 to the 8 described charging pulse generator of arbitrary claim; CPU sends the charging pulse characteristic value to the charging pulse generator, the charging pulse generator adjusts the charging pulse with certain polarity, frequency, dutycycle and sends to the exposure generator according to these characteristic values, CPU charging finishing signal is given in exposure generator charging finishing back, CPU sends the exposure instruction to the exposed pulse generator then, the exposed pulse generator produces an exposure trigger pulse and gives the exposure generator, and the exposure generator carries out exposing operation.
10, a kind of method of charging pulse output comprises:
Main frame generates a charging pulse characteristic value sequence according to the requirement of charger;
Then these characteristic value sequences are given arbitrary described charging pulse generator in the claim 1 to 8;
The charging pulse generator generates the stream of pulses of these charger needs according to these charging pulse characteristic value sequences.
11, the method for charging pulse output according to claim 10, it is characterized in that what the charging pulse characteristic value sequence that described main frame generates was that main frame sends in different time that different charging pulse characteristic values forms is the charging pulse characteristic value sequence of parameter with time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101172401A CN100458550C (en) | 2003-12-09 | 2003-12-09 | A charging pulse generator, exposure generating device therefor, and charging pulse output method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101172401A CN100458550C (en) | 2003-12-09 | 2003-12-09 | A charging pulse generator, exposure generating device therefor, and charging pulse output method |
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| Publication Number | Publication Date |
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| CN1547077A CN1547077A (en) | 2004-11-17 |
| CN100458550C true CN100458550C (en) | 2009-02-04 |
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| CNB2003101172401A Expired - Fee Related CN100458550C (en) | 2003-12-09 | 2003-12-09 | A charging pulse generator, exposure generating device therefor, and charging pulse output method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7548458B2 (en) * | 2007-04-27 | 2009-06-16 | Macronix International Co., Ltd. | Methods of biasing a multi-level-cell memory |
| CN103269215A (en) * | 2013-06-03 | 2013-08-28 | 上海宏力半导体制造有限公司 | Frequency multiplier circuit |
Citations (3)
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|---|---|---|---|---|
| CN1153317A (en) * | 1995-02-14 | 1997-07-02 | 伊斯曼柯达公司 | Exposure timing circuit |
| US20030099472A1 (en) * | 2001-11-26 | 2003-05-29 | Canon Kabushiki Kaisha | Flash control circuit |
| CN2689593Y (en) * | 2003-12-09 | 2005-03-30 | 北京中星微电子有限公司 | Charging impulsing generator, exposuring generators |
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2003
- 2003-12-09 CN CNB2003101172401A patent/CN100458550C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153317A (en) * | 1995-02-14 | 1997-07-02 | 伊斯曼柯达公司 | Exposure timing circuit |
| US20030099472A1 (en) * | 2001-11-26 | 2003-05-29 | Canon Kabushiki Kaisha | Flash control circuit |
| CN2689593Y (en) * | 2003-12-09 | 2005-03-30 | 北京中星微电子有限公司 | Charging impulsing generator, exposuring generators |
Non-Patent Citations (4)
| Title |
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| DDS在任意波形发生器中的应用. 王永，刘志强，刘硕.仪表技术，第4期. 2001 |
| DDS在任意波形发生器中的应用. 王永，刘志强，刘硕.仪表技术，第4期. 2001 * |
| 高频波形发生器MAX038的特性及应用. 江太辉，石秀芳.电子技术，第7期. 1999 |
| 高频波形发生器MAX038的特性及应用. 江太辉，石秀芳.电子技术，第7期. 1999 * |
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Granted publication date: 20090204 Termination date: 20121209 |