CN103219025A - Audio frequency recording method and device - Google Patents
Audio frequency recording method and device Download PDFInfo
- Publication number
- CN103219025A CN103219025A CN2012100167585A CN201210016758A CN103219025A CN 103219025 A CN103219025 A CN 103219025A CN 2012100167585 A CN2012100167585 A CN 2012100167585A CN 201210016758 A CN201210016758 A CN 201210016758A CN 103219025 A CN103219025 A CN 103219025A
- Authority
- CN
- China
- Prior art keywords
- position coordinates
- time writer
- electromagnetic signal
- audio
- writing medium
- 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.)
- Granted
Links
Images
Landscapes
- Near-Field Transmission Systems (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses an audio frequency recording method and device. The method comprises the following steps: an electromagnetic pen is used for transmitting an electromagnetic signal; an audio frequency picker picks up an audio frequency signal; an antenna array plate receives the electromagnetic signal; whether the electromagnetic pen makes contact with a writing medium laid on the antenna array plate is judged according to the electromagnetic signal; if the electromagnetic pen makes contact with the writing medium, a position coordinate of a contact point of the electromagnetic pen and the writing medium is judged according to the electromagnetic signal, and the position coordinate is recorded; primary synchronization information of the position coordinate and secondary synchronization information of the audio frequency signal are recorded; and the primary synchronization information and the position coordinate are encoded to generate location information, the secondary information and the audio frequency signal are encoded to generate audio frequency information, and the location information and the audio frequency information are transmitted to a storer. When an audio frequency file recorded by means of the audio frequency recording method is replayed, the audio frequency information can be found through the position coordinate, and a user can play favorite audio clips freely.
Description
Technical field
The present invention relates to the audio recording technology, relate in particular to a kind of audio recording method and device.
Background technology
Record audio is human exchange message mode easily and effectively commonly used.The key step of existing audio recording method comprises: sensor picks up sound signal, sound signal is carried out the sound signal that amplification filtering handles, carries out after amplification filtering is handled carries out the analog digital conversion, with the digital store audio-frequency information.
Adopt the audio recording device of above-mentioned audio recording method, recording pen for example, can audio information recording be got off according to time sequencing, but, during certain audio fragment of playback, need start anew once, finish up to the audio fragment of wanting playback to the audio-frequency information playback, so just cause audio-frequency information playback efficient too low, thereby restricted the utilization of audio-frequency information.
Summary of the invention
At the defective that exists in the prior art, the invention provides a kind of audio recording method and device.
One aspect of the present invention provides a kind of audio recording method, and this method comprises:
Adopt time writer to transmit electromagnetic signal, the audio frequency pick-up picks up sound signal;
The antenna array strake receives described electromagnetic signal;
Judge according to described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates according to described electromagnetic signal;
Write down first synchronizing information of described position coordinates and second synchronizing information of described sound signal;
To described first synchronizing information and the described position coordinates formation positional information of encoding, described second synchronizing information and described coding audio signal are formed audio-frequency information, and described positional information and described audio-frequency information are sent to storer.
The present invention provides a kind of audio recording device on the other hand, and this device comprises:
Time writer is used to transmit electromagnetic signal;
The antenna array strake is used to receive described electromagnetic signal;
State and position judging module, be used for judging according to described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates according to described electromagnetic signal;
The audio frequency pick-up is used to pick up sound signal;
Logging modle is used to write down first synchronizing information of described position coordinates and second synchronizing information of described sound signal;
Coding module, be used for described first synchronizing information and the described position coordinates formation positional information of encoding, described second synchronizing information and described coding audio signal are formed audio-frequency information, and described positional information and described audio-frequency information are sent to storer;
Storer is used to store described positional information and described audio-frequency information;
Wherein, described antenna array strake is connected successively with described state and position judging module, described logging modle, described coding module and described storer, and described audio frequency pick-up is connected with described logging modle, described coding module respectively.
Audio frequency by audio recording method record of the present invention, because second synchronizing information of the position coordinates of shorthand record and first synchronizing information, sound signal and the sound signal of this position coordinates, so during the audio frequency of playback, can find first synchronizing information by position coordinates, and search the second corresponding synchronizing information according to first synchronizing information, find audio-frequency information according to second synchronizing information again, and play this audio-frequency information, thereby can freely play the audio fragment of liking.
Description of drawings
Fig. 1 is the process flow diagram of audio recording method of the present invention;
Fig. 2 is for using the structure drawing of device of audio recording method of the present invention;
Fig. 3 is the processor in the audio recording device of the present invention and the connection layout of audio frequency pick-up.
Embodiment
Need do the occasion of written record and audio recording simultaneously, with the classroom is example, the student only makees written record usually and does not do audio recording, trace it to its cause is exactly to be: when the audio frequency of audio recording device record of the prior art is passed through in playback, can not freely play easily and want the audio fragment play, the utilization ratio of audio frequency is too low.
Fig. 1 is the process flow diagram of audio recording method of the present invention, comprising:
First synchronizing information of step 4, record position coordinate and second synchronizing information of sound signal;
Writing medium can be a paper.
By above-mentioned method, can finish the audio recording in the occasion that needs to do written record and audio recording simultaneously; During the audio frequency of playback, only need input to need audio fragment starting point corresponding character residing page number in written record of playing, this page paper is laid on the antenna array strake, refer to the audio fragment starting point corresponding character play at needs with time writer, just can find the starting point of corresponding audio fragment, and begin playback of audio information from this starting point.
By above-mentioned technical scheme as can be known, audio frequency by audio recording method record of the present invention, because second synchronizing information of the position coordinates of shorthand record and first synchronizing information, sound signal and the sound signal of this position coordinates, so during the audio frequency of playback, can find first synchronizing information by position coordinates, and search the second corresponding synchronizing information according to first synchronizing information, find audio-frequency information according to second synchronizing information again, and play this audio-frequency information, thereby can freely play the audio fragment of liking.
Fig. 2 is for using the structure drawing of device of audio recording method of the present invention, as shown in Figure 2, time writer 1 sends electromagnetic signal, when the registrar hears sound signal, use time writer 1 on the writing medium 2 that is laid on the antenna array strake 4, to write, variable capacitance or variable inductance in the time writer 1 change, skew of electromagnetic signal occurrence frequency or phase deviation that the resonant circuit in the time writer 1 produces.Processor 5 can detect this frequency shift (FS) or phase deviation, know whether time writer 1 contacts with writing medium 2, if time writer 1 contact with writing medium 2,5 of processors are according to the amplitudes judgement time writer 1 of electromagnetic signal and the position coordinates of writing medium 2 contact points, and the record position coordinate.At the passive electrical magnetic pen 1 that does not comprise micro switch, judge according to phase deviation whether time writer 1 contacts with writing medium 2; At the active time writer 1 that does not comprise micro switch, judge according to frequency shift (FS) whether time writer 1 contacts with writing medium 2.
Can be at the outer setting shell 3 of antenna array strake 4.
Above-mentioned description is at the time writer 1 that does not comprise micro switch, for the time writer 1 that comprises micro switch, when the registrar hears sound signal, use time writer 1 on the writing medium 2 that is laid on the antenna array strake 4, to write, be installed in the micro switch closure on the nib of time writer 1, electric capacity in the resonant circuit in the time writer 1 and inductance are communicated with, and time writer 1 can transmit electromagnetic signal.Processor 5 can detect this electromagnetic signal, as long as detect this electromagnetic signal, just judges the position coordinates of time writer 1 and writing medium 2 contact points according to the amplitude of electromagnetic signal, and the record position coordinate.
At the time writer 1 that comprises micro switch, particularly, step 3 can comprise:
If receive electromagnetic signal then time writer 1 be in contact condition with the writing medium 2 that is laid on the antenna array strake 4, judge the position coordinates and the record position coordinate of time writer 1 and writing medium 2 contact points according to the amplitude of electromagnetic signal.
According to above-mentioned description to the time writer 1 that comprises micro switch, have only time writer 1 to contact with writing medium 2, the micro switch on the time writer 1 could be closed, and time writer 1 just may transmit electromagnetic signal.So as long as the electromagnetic signal of receiving, then time writer 1 is in contact condition certainly with writing medium 2.
At the passive electrical magnetic pen 1 that does not comprise micro switch, particularly, step 3 can comprise:
Judge according to the phasing degree of electromagnetic signal whether time writer 1 and the writing medium 2 that is laid on the antenna array strake 4 are in contact condition, if be in contact condition, then judge the position coordinates and the record position coordinate of time writer 1 and writing medium 2 contact points according to the amplitude of electromagnetic signal.
When on writing medium 2, not writing, the phasing degree that obtains electromagnetic signal, with this phasing degree as the reference phase angle.Constantly calculate the phasing degree of the electromagnetic signal that receives and the difference at reference phase angle, if this difference is in the predefined scope, then time writer 1 does not contact with writing medium 2, if this difference is not in the predefined scope, then time writer 1 contacts with writing medium 2.
The method of judging time writer 1 and the position coordinates of writing medium 2 contact points according to amplitude repeats no more with of the prior art the same herein.
At the active time writer 1 that does not comprise micro switch, particularly, step 3 can comprise:
Judge according to the frequency of electromagnetic signal whether time writer 1 and the writing medium 2 that is laid on the antenna array strake 4 are in contact condition, if be in contact condition, then judge the position coordinates and the record position coordinate of time writer 1 and writing medium 2 contact points according to the amplitude of electromagnetic signal.
When on writing medium 2, not writing, obtain the frequency of electromagnetic signal, with this frequency as reference frequency.Constantly calculate the frequency of the electromagnetic signal that receives and the difference of reference frequency, if this difference is in the predefined scope, then time writer 1 does not contact with writing medium 2, if this difference is not in the predefined scope, then time writer 1 contacts with writing medium 2.
The method of judging time writer 1 and the position coordinates of writing medium 2 contact points according to amplitude repeats no more with of the prior art the same herein.
The antenna array strake can be divided into a plurality of zonules, a position coordinates is only write down in corresponding each zonule, can realize by following process: when time writer and writing medium are in contact condition, judge the position coordinates of time writer and writing medium contact point according to electromagnetic signal, and judge whether this position coordinates has record, if record arranged then be the area assignment under this position coordinates this position coordinates.
Particularly, comprise that with each zone 3*4 is counted, it is example that the antenna array strake is divided into 2 zones, two zone difference called after a (3,4), b (3,4).
The initial value of the value of being had a few of two zone correspondences all is the position coordinates of corresponding point, after judging the position coordinates of time writer and writing medium contact point, judge this position coordinates has record in which zone, and the value of being had a few in the zone with correspondence all becomes this position coordinates, if this position coordinates does not all have record in two zones, then do not write down this position coordinates.
First synchronizing information and second synchronizing information can be identical or different, as long as be associated, first synchronizing information and second synchronizing information can all be the time.First synchronizing information and second synchronizing information can also be ID number etc.
With first synchronizing information and second synchronizing information all is to be example the time, and introducing respectively encodes to form positional information and second synchronizing information and audio-frequency information encoded to first synchronizing information and position coordinates forms the principle of audio-frequency information.
At first introducing encodes to first synchronizing information and position coordinates forms the process of positional information, and at this moment, first synchronizing information is the very first time.Coded system is specific as follows.Coded format is as shown in table 1.
Table 1
| Page(WORD) | Line(BYTE) | Row(BYTE) | Time(DWORD) |
What the Page item was stored is the page number of written record place paper, takies the space of 2 bytes; Line item storage be the row number of the position correspondence of written record on the paper of place, take the space of 1 byte; Row item storage be the row number of the position correspondence of written record on the paper of place, take the space of 1 byte; What the Time item was stored is this corresponding very first time of literal record, takies the space of 4 bytes.
Be 8000*6000 if suppose counting of antenna array strake, counting of each lattice is 100*100, then every page need be position encoded to 80*60, the size of every page of coding is the 4800*8=38400 byte to the maximum.
In order to save storage space, can adopt following coded system.
Coded format is as shown in table 2.
Table 2
| FFFFFFFF(DWORD) | Page(WORD) | Time(DWORD) |
Wherein, FFFFFFFF is leading value, what represent this charting is the very first time of every page reference position correspondence, be store in the Time item be with the Page item in corresponding corresponding very first time of reference position of the page number of storing, this very first time is a written record in the time that this page occurs for the first time.The Page item takies the space of 2 bytes, and the Time item takies the space of 4 bytes.
Other positions in every page need the project of record as shown in table 3.
Table 3
| Line(BYTE) | Row(BYTE) | Time(WORD) |
Line item storage be the residing row in the position of written record in this page number, take the space of 1 byte; Row item storage be residing row in the position of written record in this page number, take the space of 1 byte; Time item storage be the very first time of the position correspondence of written record in this page, take the space of 2 bytes, and this very first time be relative time, be time zero in the time that this page occurs for the first time promptly with written record.Adopt this kind coded format, every page of size that needs coding adopts this kind coded system for being the 4800*4+10=19210 byte to the maximum, goes up a kind of coded system than adopting, and the size of every page of coding will lack 19190, has saved storage space greatly.
Introduce the method that processor forms second synchronizing information and coding audio signal audio-frequency information then.The encryption algorithm that adopts is: Regular-Pulse Excitation long-term forecasting codec RPE-LTP, and VSELP VSELP and Qualcomm Code Excited Linear Prediction (QCELP) CELP, the concrete principle of these encryption algorithms is the same with prior art, repeats no more herein.Need to prove, also can adopt other coded systems of the prior art second synchronizing information and coding audio signal.
When carrying out audio recording, written record can be stored in the storer, also can written record be stored in the storer, method of the present invention can also be applied on the touch control computer certainly.When applying to method of the present invention on the touch control computer, writing medium is a contact panel.
Only on paper, make written record, written record is not stored in the storer, can save a large amount of storage spaces, must cooperate the papery notes to realize when being plays back audio.
Written record is stored in the storer, though can take the space of some storeies, but can all pass to written record and audio recording in the computer, utilize some instruments that written record is handled, for example carry out optical character identification (Optical Character Recognition, be called for short: OCR), retrieval realizes the playback of audio frequency by the written record of electronic edition.A piece of paper can be mapped as one page internal memory,, finish the written record of electronic edition by above-mentioned method if the record bianry image then can deposit 1 in, otherwise remain 0 on the correspondence position of this internal memory and person's handwriting.
The process that audio recording method of the present invention is applied on the touch control computer is described below.
On the basis of the foregoing description, also comprise before second synchronizing information of recorde audio signal: to sound signal amplify, Filtering Processing; Judge time writer and be laid on writing medium on the antenna array strake and also comprise before whether being in contact condition according to electromagnetic signal: to electromagnetic signal amplify, Filtering Processing.
Need to prove, in the practical application, because speaker's voice content, identification, analysis via the recorder, change into literal again, this process itself just needs a period of time, so written record and audio recording do not need to have strict synchronized relation, the error of the very first time can have several seconds.At this moment, can take measures to offset this influence, be specially: second time can be deducted for 5 seconds, suppose that change into time that literal need for the recorder hears identification, analysis behind the voice content 5 seconds again.
Audio recording device among the present invention comprises time writer 1, antenna array strake 4, state and position judging module 51, audio frequency pick-up 6, logging modle 52, coding module 53 and storer 54, referring to Fig. 2, processor 5 among Fig. 2 comprises: state and position judging module 51, logging modle 52, coding module 53 and storer 54, as shown in Figure 3, Fig. 3 is structural drawing and the ingredient of processor 5 and the connection layout of audio frequency pick-up 6 of the processor 5 in the audio recording device of the present invention.In conjunction with Fig. 2 and Fig. 3 one-piece construction of audio recording device of the present invention as can be seen, antenna array strake 4 is connected successively with state and position judging module 51, logging modle 52, coding module 53 and storer 54, and audio frequency pick-up 6 is connected with logging modle 52, coding module 53 respectively.
State and position judging module 51, be used for judging according to electromagnetic signal whether time writer 1 and the writing medium 2 that is laid on the antenna array strake 4 are in contact condition, if be in contact condition, then judge the position coordinates of time writer 1 and writing medium 2 contact points and write down this position coordinates according to electromagnetic signal; Audio frequency pick-up 6 is used to pick up sound signal; Logging modle 52 is used for first synchronizing information of record position coordinate and second synchronizing information of sound signal; Coding module 53 is used for first synchronizing information and the position coordinates formation positional information of encoding is formed audio-frequency information to second synchronizing information and coding audio signal, and positional information and audio-frequency information are sent to storer 54; Storer 54 is used for stored position information and audio-frequency information.
By above-mentioned technical scheme as can be known, the present invention passes through time writer, the antenna array strake, state and position judging module, the audio frequency pick-up, logging modle, the cooperation of coding module and storer, record time writer and the position coordinates of writing medium contact point and first synchronizing information of record position coordinate, second synchronizing information of recorde audio signal, and with first synchronizing information and the position coordinates generation positional information of encoding, second synchronizing information and coding audio signal are generated audio-frequency information, at last positional information and audio-frequency information are stored, finish the audio recording function, during the audio frequency of playback device recording of the present invention, can find first synchronizing information by position coordinates, and search the second corresponding synchronizing information according to first synchronizing information, find audio-frequency information according to second synchronizing information again, and play this audio-frequency information, thereby can freely play the audio fragment of liking.
With reference to Fig. 2 and Fig. 3, time writer 1 sends electromagnetic signal, the registrar hears sound signal, use time writer 1 on the writing medium 2 that is laid on the antenna array strake 4, to write, variable capacitance or variable inductance in the time writer 1 change, skew of electromagnetic signal occurrence frequency or phase deviation that the resonant circuit in the time writer 1 produces.State and position judging module 51 can detect this frequency shift (FS) or phase deviation, know whether time writer 1 contacts with writing medium 2, if time writer 1 contacts with writing medium 2, state and position judging module 51 are just judged the position coordinates of time writer 1 and writing medium 2 contact points according to the amplitude of electromagnetic signal, and the record position coordinate.At the passive electrical magnetic pen 1 that does not comprise micro switch, judge according to phase deviation whether time writer 1 contacts with writing medium 2; At the active time writer 1 that does not comprise micro switch, judge according to frequency shift (FS) whether time writer 1 contacts with writing medium 2.
Can be at the outer setting shell 3 of antenna array strake 4.
Above-mentioned description is at the time writer 1 that does not comprise micro switch, for the time writer 1 that comprises micro switch, when the registrar hears sound signal, use time writer 1 on the writing medium 2 that is laid on the antenna array strake 4, to write, be installed in the micro switch closure on the nib of time writer 1, electric capacity in the resonant circuit in the time writer 1 and inductance are communicated with, and time writer 1 can transmit electromagnetic signal.Processor 5 can detect this electromagnetic signal, as long as detect this electromagnetic signal, just judges the position coordinates of time writer 1 and writing medium 2 contact points according to the amplitude of electromagnetic signal, and the record position coordinate.
Micro switch is installed between the electric capacity and inductance of resonant circuit of time writer 1.
At the time writer 1 that comprises micro switch, state and position judging module 51 comprise amplitude discrimination circuit, state judging unit and position judgment unit.
Amplitude discrimination circuit obtains the amplitude of electromagnetic signal.
The state judging unit if receive electromagnetic signal then time writer 1 be in contact condition with writing medium 2, send first signal to the position judgment unit.
The position coordinates of time writer 1 and writing medium 2 contact points is then judged if receive first signal in the position judgment unit according to the amplitude of electromagnetic signal, and writes down this position coordinates.
For the time writer 1 that comprises micro switch, when the registrar hears sound signal, use time writer 1 on the writing medium 2 that is laid on the antenna array strake 4, to write, be installed in the micro switch closure on the nib of time writer 1, electric capacity in the resonant circuit in the time writer 1 and inductance are communicated with, and time writer 1 can transmit electromagnetic signal.So,, just show that time writer 1 contacts with writing medium 2 as long as the state judging unit receives electromagnetic signal.
The method of judging time writer 1 and the position coordinates of writing medium 2 contact points according to amplitude repeats no more with of the prior art the same herein.
At the passive electrical magnetic pen 1 that does not comprise micro switch, state and position judging module comprise amplitude discrimination circuit, phase discriminator, state judging unit and position judgment unit.
Amplitude discrimination circuit is used to obtain the amplitude of electromagnetic signal;
Phase discriminator is used to obtain the phasing degree of electromagnetic signal;
State and judging unit are used for judging that according to the phasing degree time writer 1 and writing medium 2 are in contact condition, if be in contact condition, then send first signal to the position judgment unit;
The position judgment unit is used for then judging the position coordinates of time writer 1 and writing medium 2 contact points and writing down this position coordinates according to amplitude if receive first signal.
When on writing medium 2, not writing, the phasing degree that obtains electromagnetic signal, with this phasing degree as the reference phase angle.Constantly calculate the phasing degree of the electromagnetic signal that receives and the difference at reference phase angle, if this difference is in the predefined scope, then time writer 1 does not contact with writing medium 2, if this difference is not in the predefined scope, then time writer 1 contacts with writing medium 2.
The method of judging time writer 1 and the position coordinates of writing medium 2 contact points according to amplitude repeats no more with of the prior art the same herein.
At the active time writer 1 that does not comprise micro switch, state and position judging module 51 comprise amplitude discrimination circuit, frequency-discriminating circuit, state judging unit and position judgment unit.
Amplitude discrimination circuit is used to obtain the amplitude of electromagnetic signal;
Frequency-discriminating circuit is used to obtain the frequency of electromagnetic signal;
The state judging unit is used for judging that according to frequency time writer 1 and writing medium 2 are in contact condition, if be in contact condition, then send first signal to the position judgment unit;
The position judgment unit is used for then judging the position coordinates of time writer 1 and writing medium 2 contact points and writing down this position coordinates according to amplitude if receive first signal.
When on writing medium 2, not writing, obtain the frequency of electromagnetic signal, with this frequency as reference frequency.Constantly calculate the frequency of the electromagnetic signal that receives and the difference of reference frequency, if this difference is in the predefined scope, then time writer 1 does not contact with writing medium 2, if this difference is not in the predefined scope, then time writer 1 contacts with writing medium 2.
The method of judging time writer 1 and the position coordinates of writing medium 2 contact points according to amplitude repeats no more with of the prior art the same herein.
Coexist the same in the method for the principle of work of coding module 53 repeats no more herein.
First synchronizing information and second synchronizing information can be identical or different, as long as be associated, first synchronizing information and second synchronizing information can all be the time.First synchronizing information and second synchronizing information can also be ID number etc.
Similarly, audio recording device of the present invention can be stored in written record in the storer 54, can written record be stored in the storer 54, can also be used in combination with touch control computer, specifically describe the associated description of visible audio recording method, repeat no more herein.
On the basis of the foregoing description, further, state and position judging module 51 specifically are used for judging according to electromagnetic signal whether time writer 1 and writing medium 2 are in contact condition, if be in contact condition, then judge the position coordinates of time writer 1 and writing medium 2 contact points and judge whether position coordinates has record, if record is arranged then be the area assignment under the position coordinates position coordinates according to electromagnetic signal.
The antenna array strake can be divided into a plurality of zonules, a position coordinates is only write down in corresponding each zonule, can realize by following process: when time writer and writing medium are in contact condition, judge the position coordinates of time writer and writing medium contact point according to electromagnetic signal, and judge whether this position coordinates has record, if record arranged then be the area assignment under this position coordinates this position coordinates.
Particularly, comprise that with each zone 3*4 is counted, it is example that the antenna array strake is divided into 2 zones, two zone difference called after a (3,4), b (3,4).
Two corresponding values of being had a few in zone all are the position coordinateses of corresponding point, after judging the position coordinates of time writer and writing medium contact point, judge this position coordinates has record in which zone, and the value of being had a few in the zone with correspondence all becomes this position coordinates, if this position coordinates does not all have record in two zones, then do not write down this position coordinates.
Audio recording device of the present invention can also comprise searches module, be used for searching first synchronizing information corresponding with position coordinates according to the position coordinates of state and position judging module 51 outputs, and search second synchronizing information according to first synchronizing information, and find and the second synchronizing information corresponding audio signal according to second synchronizing information, search module and be connected with state and position judging module 51, storer 54 respectively.
On the basis of the foregoing description, further, can also comprise audio-frequency signal processing module and pretreatment module; Be connected with logging modle 52, coding module 53 respectively after the series connection of audio frequency pick-up 6, audio-frequency signal processing module, audio-frequency signal processing module be used for to sound signal amplify, Filtering Processing; Antenna array strake 4, pretreatment module and position and condition judgment module are connected successively, pretreatment module be used for to electromagnetic signal amplify, Filtering Processing.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (19)
1. an audio recording method is characterized in that, comprising:
Adopt time writer to transmit electromagnetic signal, the audio frequency pick-up picks up sound signal;
The antenna array strake receives described electromagnetic signal;
Judge according to described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates according to described electromagnetic signal;
Write down first synchronizing information of described position coordinates and second synchronizing information of described sound signal;
To described first synchronizing information and the described position coordinates formation positional information of encoding, described second synchronizing information and described coding audio signal are formed audio-frequency information, and described positional information and described audio-frequency information are sent to storer.
2. audio recording method according to claim 1, it is characterized in that, describedly judge according to described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates, specifically comprise according to described electromagnetic signal:
If receive described electromagnetic signal, then judge described time writer and be laid on the position coordinates of the writing medium contact point on the described antenna array strake and write down described position coordinates according to the amplitude of described electromagnetic signal.
3. audio recording method according to claim 1, it is characterized in that, describedly judge according to described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates specifically to comprise according to described electromagnetic signal:
Judge according to the phasing degree of described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates according to the amplitude of described electromagnetic signal.
4. audio recording method according to claim 1, it is characterized in that, describedly judge according to described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates specifically to comprise according to described electromagnetic signal:
Judge according to the frequency of described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates according to the amplitude of described electromagnetic signal.
5. according to the arbitrary described audio recording method of claim 1-4, it is characterized in that, described if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates according to described electromagnetic signal, specifically comprise:
If be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and judge whether described position coordinates has record, if record is arranged then be the area assignment under the described position coordinates described position coordinates according to described electromagnetic signal.
6. according to the arbitrary described audio recording method of claim 1-4, it is characterized in that described writing medium is paper or contact panel.
7. according to the arbitrary described audio recording method of claim 1-4, it is characterized in that described first synchronizing information and described second synchronizing information are the time.
8. according to the arbitrary described audio recording method of claim 1-4, it is characterized in that, also comprise before writing down second synchronizing information of described sound signal: to described sound signal amplify, Filtering Processing;
Describedly judge described time writer and be laid on writing medium on the described antenna array strake and also comprise before whether being in contact condition according to described electromagnetic signal: to described electromagnetic signal amplify, Filtering Processing.
9. according to the arbitrary described audio recording method of claim 1-4, it is characterized in that, described second synchronizing information and described coding audio signal are formed audio-frequency information employing Regular-Pulse Excitation long-term forecasting codec RPE-LTP, VSELP VSELP or Qualcomm Code Excited Linear Prediction (QCELP) CELP.
10. an audio recording device is characterized in that, comprising:
Time writer is used to transmit electromagnetic signal;
The antenna array strake is used to receive described electromagnetic signal;
State and position judging module, be used for judging according to described electromagnetic signal whether described time writer and the writing medium that is laid on the described antenna array strake are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and write down described position coordinates according to described electromagnetic signal;
The audio frequency pick-up is used to pick up sound signal;
Logging modle is used to write down first synchronizing information of described position coordinates and second synchronizing information of described sound signal;
Coding module, be used for described first synchronizing information and the described position coordinates formation positional information of encoding, described second synchronizing information and described coding audio signal are formed audio-frequency information, and described positional information and described audio-frequency information are sent to storer;
Storer is used to store described positional information and described audio-frequency information;
Wherein, described antenna array strake is connected successively with described state and position judging module, described logging modle, described coding module and described storer, and described audio frequency pick-up is connected with described logging modle, described coding module respectively.
11. audio recording device according to claim 10 is characterized in that:
Described time writer is the time writer that has micro switch;
Described state and position judging module comprise amplitude discrimination circuit, state judging unit and position judgment unit;
Described amplitude discrimination circuit is used to obtain the amplitude of described electromagnetic signal;
Described state judging unit is used for sending first signal to described position judgment unit if receive the then described time writer of electromagnetic signal and described writing medium is in contact condition;
Described position judgment unit is used for then judging the position coordinates of described time writer and described writing medium contact point and writing down described position coordinates according to described amplitude if receive described first signal.
12. audio recording device according to claim 10 is characterized in that:
Described time writer is not for comprising the passive electrical magnetic pen of micro switch;
Described state position judge module comprises amplitude discrimination circuit, phase discriminator, state judging unit and position judgment unit;
Described amplitude discrimination circuit is used to obtain the amplitude of described electromagnetic signal;
Described phase discriminator is used to obtain the phasing degree of electromagnetic signal;
Described state and judging unit are used for judging that according to described phasing degree described time writer and described writing medium are in contact condition, if be in contact condition, then send first signal to described position judgment unit;
Described position judgment unit is used for then judging the position coordinates of described time writer and described writing medium contact point and writing down described position coordinates according to described amplitude if receive described first signal.
13. audio recording device according to claim 10 is characterized in that:
Described time writer is not for comprising the active time writer of micro switch;
Described state and position judging module comprise amplitude discrimination circuit, frequency-discriminating circuit, state judging unit and position judgment unit;
Described amplitude discrimination circuit is used to obtain the amplitude of described electromagnetic signal;
Described frequency-discriminating circuit is used to obtain the frequency of electromagnetic signal;
Described state judging unit is used for judging that according to described frequency described time writer and described writing medium are in contact condition, if be in contact condition, then sends first signal to described position judgment unit;
Described position judgment unit is used for then judging the position coordinates of described time writer and described writing medium contact point and writing down described position coordinates according to described amplitude if receive described first signal.
14., it is characterized in that according to the arbitrary described audio recording device of claim 10-13:
Described state and position judging module specifically are used for judging according to described electromagnetic signal whether described time writer and described writing medium are in contact condition, if be in contact condition, then judge the position coordinates of described time writer and described writing medium contact point and judge whether described position coordinates has record, if record is arranged then be the area assignment under the described position coordinates described position coordinates according to described electromagnetic signal.
15. according to the arbitrary described audio recording device of claim 10-13, it is characterized in that, also comprise and search module, be used for searching described first synchronizing information corresponding with described position coordinates according to the described position coordinates of described state and position judging module output, and search described second synchronizing information according to described first synchronizing information, and find and the described second synchronizing information corresponding audio signal according to described second synchronizing information, the described module of searching is connected with described state and position judging module, described storer respectively.
16., it is characterized in that described writing medium is paper or contact panel according to the arbitrary described audio recording device of claim 10-13.
17., it is characterized in that described first synchronizing information and described second synchronizing information are the time according to the arbitrary described audio recording device of claim 10-13.
18. according to the arbitrary described audio recording device of claim 10-13, it is characterized in that, also comprise audio-frequency signal processing module and pretreatment module;
Be connected with described logging modle, described coding module respectively after described audio frequency pick-up and the series connection of described audio-frequency signal processing module, described audio-frequency signal processing module be used for to described sound signal amplify, Filtering Processing;
Described antenna array strake, described pretreatment module and described state and position judging module are connected successively, described pretreatment unit be used for to described electromagnetic signal amplify, Filtering Processing.
19. according to the arbitrary described audio recording device of claim 10-13, it is characterized in that, described second synchronizing information and described coding audio signal are formed audio-frequency information employing Regular-Pulse Excitation long-term forecasting codec RPE-LTP, VSELP VSELP or Qualcomm Code Excited Linear Prediction (QCELP) CELP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210016758.5A CN103219025B (en) | 2012-01-18 | 2012-01-18 | Audio recording method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210016758.5A CN103219025B (en) | 2012-01-18 | 2012-01-18 | Audio recording method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103219025A true CN103219025A (en) | 2013-07-24 |
| CN103219025B CN103219025B (en) | 2020-03-06 |
Family
ID=48816741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210016758.5A Expired - Fee Related CN103219025B (en) | 2012-01-18 | 2012-01-18 | Audio recording method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103219025B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110309898A (en) * | 2019-06-21 | 2019-10-08 | 鲁伯特（北京）教育科技有限公司 | Paper page number detection method, system and handwriting board device |
| CN112788264A (en) * | 2019-11-07 | 2021-05-11 | 文昌科技有限公司 | Recording and video searching system and method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1453741A (en) * | 2002-04-22 | 2003-11-05 | 北京汉王科技有限公司 | Wireless passive hand-writing board for computer log-in |
| CN1484194A (en) * | 2002-09-16 | 2004-03-24 | 凌阳科技股份有限公司 | Panel sensor and location point search method thereof |
| CN1564193A (en) * | 2004-04-15 | 2005-01-12 | 北京汉王科技有限公司 | Radio active hand writing board for computer inputting |
| CN1855117A (en) * | 2005-01-12 | 2006-11-01 | 跳蛙企业股份有限公司 | Interactive apparatus with recording and playback capability usable with encoded writing medium |
| JP2009064103A (en) * | 2007-09-04 | 2009-03-26 | Ricoh Co Ltd | Information processor and recording device |
| CN201503574U (en) * | 2009-04-16 | 2010-06-09 | 台均科技（深圳）有限公司 | Electromagnetic pen and electromagnetic induction equipment |
-
2012
- 2012-01-18 CN CN201210016758.5A patent/CN103219025B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1453741A (en) * | 2002-04-22 | 2003-11-05 | 北京汉王科技有限公司 | Wireless passive hand-writing board for computer log-in |
| CN1484194A (en) * | 2002-09-16 | 2004-03-24 | 凌阳科技股份有限公司 | Panel sensor and location point search method thereof |
| CN1564193A (en) * | 2004-04-15 | 2005-01-12 | 北京汉王科技有限公司 | Radio active hand writing board for computer inputting |
| CN1855117A (en) * | 2005-01-12 | 2006-11-01 | 跳蛙企业股份有限公司 | Interactive apparatus with recording and playback capability usable with encoded writing medium |
| JP2009064103A (en) * | 2007-09-04 | 2009-03-26 | Ricoh Co Ltd | Information processor and recording device |
| CN201503574U (en) * | 2009-04-16 | 2010-06-09 | 台均科技（深圳）有限公司 | Electromagnetic pen and electromagnetic induction equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110309898A (en) * | 2019-06-21 | 2019-10-08 | 鲁伯特（北京）教育科技有限公司 | Paper page number detection method, system and handwriting board device |
| CN112788264A (en) * | 2019-11-07 | 2021-05-11 | 文昌科技有限公司 | Recording and video searching system and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103219025B (en) | 2020-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI547808B (en) | Information exchange method and information exchange system | |
| CN101689187A (en) | Multi-modal smartpen computing system | |
| CN101901169B (en) | Scanner and method | |
| CN102711046B (en) | Non-contact electronic name card information exchange method | |
| CN103973340B (en) | Near field communication method and near-field communication equipment | |
| CN105609122A (en) | Control method and device of terminal device | |
| CN105809588A (en) | Earphone and scenic spot broadcasting system provided with earphone | |
| CN103219025A (en) | Audio frequency recording method and device | |
| CN109213898A (en) | The video retrieval method and device of video monitoring system | |
| JP2015041928A (en) | Sonic communication system with sonic signal output device, and portable terminal device utilizing the system | |
| CN105611356A (en) | Method and device for controlling terminal device | |
| CN102156846B (en) | RFID (Radio Frequency Identification) based method and device for transmitting information between reader and label | |
| CN104796966A (en) | Method and device for connection of terminal with wireless equipment | |
| CN204650536U (en) | POS terminal and comprise its payment system | |
| KR20090093620A (en) | RFID system and method for transmitting large data of passive RFID | |
| CN102332083B (en) | Information transmission methods and devices for radio frequency identification reader and tag | |
| KR102183218B1 (en) | Method for transmitting continuous data and data transmission system | |
| CN101022611A (en) | Mobile terminal addressbook information leading-out and leading-in method | |
| CN102169684B (en) | A MIDI file structure and a generating apparatus for Gongche notation | |
| CN201910823U (en) | Networking terminal for Internet of Things | |
| CN101529499A (en) | Pen-type voice computer and method thereof | |
| CN103186583B (en) | A kind of information record based on mobile terminal and search method and device | |
| CN203630800U (en) | Near-field communication tag equipment | |
| CN104202490B (en) | Active rfid card, speech communication system and method | |
| CN202795457U (en) | An express article attribute information management system base on two-dimensional codes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200306 Termination date: 20220118 |