CN103076881A - Multimedia on-demand method and system based on brain wave signals - Google Patents
Multimedia on-demand method and system based on brain wave signals Download PDFInfo
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- CN103076881A CN103076881A CN2013100183099A CN201310018309A CN103076881A CN 103076881 A CN103076881 A CN 103076881A CN 2013100183099 A CN2013100183099 A CN 2013100183099A CN 201310018309 A CN201310018309 A CN 201310018309A CN 103076881 A CN103076881 A CN 103076881A
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Abstract
The invention relates to a multimedia on-demand method and a multimedia on-demand system based on brain wave signals; visual stimulation is carried out through a visual stimulation signal; then a brain wave signal which is induced by the visual stimulation is acquired; the characteristic frequency of the brain wave signal is acquired according to the peak value of the frequency scope of the brain wave signal; the acquired characteristic frequency of the brain wave signal is compared with preset characteristic frequency; and on-demand operation which corresponds to the preset characteristic frequency is executed according to a comparison result. According to the multimedia on-demand method and the multimedia on-demand system based on the brain wave signals, the use by the physically disabled and healthy people is convenient, the sensitivity of a brain wave signal acquisition device is high, a visual stimulation method produces quick and stable signals, and a multimedia terminal is easily transplanted onto various computer operation systems and portable equipment operation systems.
Description
Technical field
The present invention relates to a kind of multimedia-on-demand method and system, relate in particular to a kind of multimedia-on-demand method and system based on eeg signal.
Background technology
Existing multimedia order programme system needs the user with the limb action operation or automatically plays at random, although it is more convenient that this broadcast mode uses, but this mode of operation is not suitable for some health physical disabilities, and they can't use physical fitness personage's on-demand device or use very inconvenient.As a kind of effective man-machine interaction mode, the brain-computer interface technology also is not widely used general public amusement aspect in addition.
Summary of the invention
The technical matters that the present invention solves is: make up a kind of multimedia-on-demand method and system based on eeg signal, overcome prior art VOD system man-machine interaction aspect and lack brain-computer interface, the technical matters of being inconvenient to use.
Technical scheme of the present invention is: a kind of multimedia point broadcasting method based on eeg signal is provided, comprises the steps:
Produce the visual stimuli signal: produce the visual stimuli signal according to on-demand content, described visual stimuli signal results from the display pattern of some different flicker frequencies, and display device receives described visual stimuli signal and carries out visual stimulus;
Gather eeg signal: gather the eeg signal that brings out according to described visual stimulus;
Produce control signal: the characteristic frequency of obtaining described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that obtains is compared with default characteristic frequency, carry out and the corresponding program request operation of default characteristic frequency according to comparison result.
Further technical scheme of the present invention is: described default characteristic frequency is set up related with the control signal of program request operation.
Further technical scheme of the present invention is: the eeg signal that gathers is sent in the wireless signal mode.
Further technical scheme of the present invention is: in gathering the eeg signal step, comprise that also the eeg signal to gathering carries out pre-service, described pre-service comprises one or more processing modes in denoising, filtering, the amplification.
Technical scheme of the present invention is: make up a kind of multimedia order programme system based on eeg signal, comprise visual stimuli unit, eeg signal collecting unit, multimedia terminal, described multimedia terminal comprises data processing module, described visual stimuli unit produces the visual stimuli signal according to on-demand content, described visual stimuli signal results from the display pattern of some different flicker frequencies, and described visual stimuli unit receives described visual stimuli signal and carries out visual stimulus; The eeg signal that the collection of described eeg signal collecting unit is brought out according to described visual stimulus, described data processing module obtains the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that described data processing module will obtain is compared with default characteristic frequency and is produced and the default corresponding program request control signal of characteristic frequency according to comparison result, and the multimedia terminal is carried out described program request control signal and carried out the program request operation.
Further technical scheme of the present invention is: described eeg signal collecting unit comprises at least two electrodes, at hindbrain and forehead an electrode is set at least respectively.
Further technical scheme of the present invention is: described eeg signal collecting unit comprise the eeg signal that amplify to gather the signal amplification module, the eeg signal that gathers is carried out the filtration module of filtering and eeg signal is carried out in the denoising module of denoising one or more.
Further technical scheme of the present invention is: described eeg signal collecting unit comprises the wireless communication module that transmits the eeg signal that gathers.
Further technical scheme of the present invention is: described visual stimuli unit comprises the output module of visual stimuli signal generator module, output visual stimuli signal.
Further technical scheme of the present invention is: described multimedia terminal comprises portable terminal.
Implementation result of the present invention is: make up a kind of multimedia-on-demand method and system based on eeg signal, carry out visual stimulus by the visual stimuli signal, then gather the eeg signal that this visual stimulus is brought out, obtain the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that obtains is compared with default characteristic frequency, carry out and the corresponding program request operation of default characteristic frequency according to comparison result.Multimedia-on-demand method and system based on eeg signal of the present invention, make things convenient for deformity of limbs personage and the use that perfects the personage, the eeg signal harvester is highly sensitive, it is stable rapidly that the visual stimuli mode produces signal, and the multimedia terminal is easy to transplant in multiple computer operating system and the portable device system.
Description of drawings
Fig. 1 is process flow diagram of the present invention.
Fig. 2 is structural representation of the present invention.
Fig. 3 is video pump cellular construction synoptic diagram of the present invention.
Fig. 4 is eeg signal collecting unit structural representation of the present invention.
Fig. 5 is multimedia terminal of the present invention structural representation.
Embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is further specified.
As shown in Figure 1, the specific embodiment of the present invention is: a kind of multimedia point broadcasting method based on eeg signal is provided, comprises the steps:
Step 100: produce the visual stimuli signal, that is: produce the visual stimuli signal according to on-demand content, described visual stimuli signal results from the display pattern of some different flicker frequencies, and display device receives described visual stimuli signal and carries out visual stimulus.
Specific implementation process is as follows: generate the display pattern of different flicker frequencies according to on-demand content, this display pattern namely produces the visual stimuli signal, and the program request operator receives this visual stimuli signal, and this visual stimuli signal carries out visual stimulus to program request operator brain.
Step 200: gather eeg signal, that is: gather the eeg signal that brings out according to described visual stimulus.In the specific implementation process, gather the eeg signal of program request operator's hindbrain and forehead.
Step 300: produce control signal, that is: obtain the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that obtains is compared with default characteristic frequency, carry out and the corresponding program request operation of default characteristic frequency according to comparison result.
Specific implementation process is as follows: receive the eeg signal that gathers, obtain the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, pre-stored default characteristic frequency and the program request operational order corresponding with default characteristic frequency in the system are set up related with the control signal of program request operation described default characteristic frequency.Described default characteristic frequency is related with on-demand content by display pattern, and this display pattern is same or similar with the display pattern that produces the visual stimuli signal.Like this, characteristic frequency and the default characteristic frequency of the described eeg signal that obtains are compared, by comparison, and then draw the display pattern that user's notice is concentrated, draw the operation that the user thinks.According to comparison result, call same or analogous default program request operational order corresponding to characteristic frequency of comparison result, then carry out this program request operation.
Preferred implementation of the present invention is: the eeg signal that gathers is sent in the wireless signal mode.This wireless signal comprises in Bluetooth signal, 2.4G wireless communication signal, the radiofrequency signal any.
Preferred implementation of the present invention is: in gathering the eeg signal step, comprise that also the eeg signal to gathering carries out pre-service, described pre-service comprises one or more processing modes in denoising, filtering, the amplification.Specific implementation process is: the eeg signal that gathers is removed noise through after the further denoising, filter clutter and amplify processing, obtain more steady and audible eeg signal.
As shown in Figure 2, the specific embodiment of the present invention is: make up a kind of multimedia order programme system based on eeg signal, comprise visual stimuli unit 1, eeg signal collecting unit 2, multimedia terminal 3, described multimedia terminal 3 comprises data processing module 31, described visual stimuli unit 1 produces the visual stimuli signal according to on-demand content, described visual stimuli signal results from the display pattern of some different flicker frequencies, and described visual stimuli unit 1 receives described visual stimuli signal and carries out visual stimulus; Described eeg signal collecting unit 2 gathers the eeg signal that brings out according to described visual stimulus, send the multimedia terminal to, data processing module 31 is resolved the frequency of eeg signal, obtain the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that obtains is compared with default characteristic frequency, judge the display pattern that user's sight is paid close attention to this, and then obtain the user and want the operation information implemented.Data processing module 31 produces and the default corresponding program request control signal of characteristic frequency according to comparison result, and data processing module 31 is carried out described program request control signal and carried out the program request operation.In the specific embodiment, described eeg signal collecting unit comprise the eeg signal that amplify to gather the signal amplification module, the eeg signal that gathers is carried out the filtration module of filtering and eeg signal is carried out in the denoising module of denoising one or more.In the specific embodiment, described multimedia terminal comprises portable terminal.
Specific implementation process is as follows: visual stimuli unit 1 generates the display pattern of different flicker frequencies according to on-demand content, this display pattern namely produces the visual stimuli signal, the program request operator receives this visual stimuli signal, and this visual stimuli signal carries out visual stimulus to program request operator brain.Eeg signal collecting unit 2 gathers the eeg signal that brings out according to described visual stimulus.Multimedia terminal 3 receives the eeg signal that gathers, data processing module 31 parses the characteristic frequency of visual stimuli signal from eeg signal, data processing module 31 obtains the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, pre-stored default characteristic frequency and the program request operational order corresponding with default characteristic frequency in the system are set up related with the control signal of program request operation described default characteristic frequency.Described default characteristic frequency is related with on-demand content by display pattern, and this display pattern is same or similar with the display pattern that produces the visual stimuli signal.Like this, the characteristic frequency of the described eeg signal that data processing module 31 will obtain is compared with default characteristic frequency, by comparison, and then draws the display pattern that user's notice is concentrated, and draws the operation that the user thinks.Multimedia terminal 3 comprises multimedia playing module 32, and according to comparison result, data processing module 31 calls same or analogous default program request operational order corresponding to characteristic frequency of comparison result, and then multimedia playing module 32 is carried out this program request operation.In the specific embodiment, described eeg signal collecting unit 1 comprises at least two electrodes, at hindbrain and forehead an electrode is set at least respectively.
Preferred implementation of the present invention is: described eeg signal collecting unit 2 comprises the wireless communication module that transmits the eeg signal that gathers.Wireless communication module sends the eeg signal that gathers, multimedia terminal 3 arranges equally wireless communication module 33 and is used for receiving the eeg signal of encoding after the preliminary filtering and noise reduction processing of process of described eeg signal collecting unit 2 transmissions of brain, subsequently decoding, and carry out subsequently frequency resolution.
Preferential embodiment of the present invention is: described visual stimuli unit 1 comprises the output module 12 of visual stimuli signal generator module 11, output visual stimuli signal.Wherein visual stimuli signal generator module 11 produces pumping signal and sends output module 12 to, and the visual stimuli signal is comprised of the pattern of some different flicker frequencies; Output module 12 comprises display device, such as LCD display, light-emitting diode display, CRT monitor etc., produces the visual stimuli pattern in order to receive pumping signal.Display device should enough be differentiated the visual stimuli pattern for the user greatly.
Implementation result of the present invention is: make up a kind of multimedia-on-demand method and system based on eeg signal, carry out visual stimulus by the visual stimuli signal, then gather the eeg signal that this visual stimulus is brought out, obtain the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that obtains is compared with default characteristic frequency, carry out and the corresponding program request operation of default characteristic frequency according to comparison result.Multimedia-on-demand method and system based on eeg signal of the present invention, make things convenient for deformity of limbs personage and the use that perfects the personage, the eeg signal harvester is highly sensitive, it is stable rapidly that the visual stimuli mode produces signal, and multimedia terminal 3 is easy to transplant in multiple computer operating system and the portable device system.
Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. the multimedia point broadcasting method based on eeg signal comprises the steps:
Produce the visual stimuli signal: produce the visual stimuli signal according to on-demand content, described visual stimuli signal results from the display pattern of some different flicker frequencies, and display device receives described visual stimuli signal and carries out visual stimulus;
Gather eeg signal: gather the eeg signal that brings out according to described visual stimulus;
Produce control signal: the characteristic frequency of obtaining described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that obtains is compared with default characteristic frequency, carry out and the corresponding program request operation of default characteristic frequency according to comparison result.
2. described multimedia point broadcasting method based on eeg signal according to claim 1 is characterized in that, described default characteristic frequency is set up related with the control signal of program request operation.
3. described multimedia point broadcasting method based on eeg signal according to claim 1 is characterized in that, the eeg signal that gathers is sent in the wireless signal mode.
4. described multimedia point broadcasting method based on eeg signal according to claim 1, it is characterized in that, in gathering the eeg signal step, comprise that also the eeg signal to gathering carries out pre-service, described pre-service comprises one or more processing modes in denoising, filtering, the amplification.
5. multimedia order programme system based on eeg signal, it is characterized in that, comprise visual stimuli unit, eeg signal collecting unit, multimedia terminal, described multimedia terminal comprises data processing module, described visual stimuli unit produces the visual stimuli signal according to on-demand content, described visual stimuli signal results from the display pattern of some different flicker frequencies, and described visual stimuli unit receives described visual stimuli signal and carries out visual stimulus; The eeg signal that the collection of described eeg signal collecting unit is brought out according to described visual stimulus, described data processing module obtains the characteristic frequency of described eeg signal according to the crest frequency of described eeg signal frequency range, the characteristic frequency of the described eeg signal that described data processing module will obtain is compared with default characteristic frequency and is produced and the default corresponding program request control signal of characteristic frequency according to comparison result, and the multimedia terminal is carried out described program request control signal and carried out the program request operation.
6. described multimedia order programme system based on eeg signal according to claim 5 is characterized in that described eeg signal collecting unit comprises at least two electrodes, at hindbrain and forehead an electrode is set at least respectively.
7. described multimedia order programme system based on eeg signal according to claim 5, it is characterized in that, described eeg signal collecting unit comprise the eeg signal that amplify to gather the signal amplification module, the eeg signal that gathers is carried out the filtration module of filtering and eeg signal is carried out in the denoising module of denoising one or more.
8. described multimedia order programme system based on eeg signal according to claim 5 is characterized in that, described eeg signal collecting unit comprises the wireless communication module that transmits the eeg signal that gathers.
9. described multimedia order programme system based on eeg signal according to claim 5 is characterized in that, described visual stimuli unit comprises the output module of visual stimuli signal generator module, output visual stimuli signal.
10. described multimedia order programme system based on eeg signal according to claim 5 is characterized in that described multimedia terminal comprises portable terminal.
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