CN101494810B - Sound play device and method - Google Patents
Sound play device and method Download PDFInfo
- Publication number
- CN101494810B CN101494810B CN 200810004375 CN200810004375A CN101494810B CN 101494810 B CN101494810 B CN 101494810B CN 200810004375 CN200810004375 CN 200810004375 CN 200810004375 A CN200810004375 A CN 200810004375A CN 101494810 B CN101494810 B CN 101494810B
- Authority
- CN
- China
- Prior art keywords
- sound
- play
- magnetic
- magnetic element
- base plate
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Disclosed is a sound playing apparatus and method used in a display device for playing sound, in which, the display device has a display basal plate for displaying image. The sound playing apparatus comprises a wave filter, an amplifier and at least one output unit; the wave filter is used for receiving a sound signal, performing wave filtering to the sound signal and generating a filtered signal; the amplifier is coupled with the wave filter for amplifying the filtered signal to generate an amplified signal; the at least one output unit is coupled with the amplifier for playing the amplified signal in a predetermined mode. The sound playing apparatus and method in the invention enable the film display to have sound playing function within the limited space, solves the problem of no sound in the known film display, and provides more application effects to user.
Description
Technical field
The invention provides a kind of sound play device, be built in the sound play device of thin-film display in espespecially a kind of.
Background technology
Along with opto-electronics is constantly progressive, display changes flat-type display into by traditional cathode-ray tube display (Cathode ray tube display) gradually, for example, and liquid crystal display, plasma display etc.Yet with making rapid progress of person's science and technology, develop again more light and handy electronic ink display device, wherein electric ink is the liquid with a plurality of charged particles, under the impact of electric field, charged particle is mobile in liquid, and the distribution of these a little charged particles has determined the show state of electronic ink display device.And electronic ink display device can adopt reflective display mode, does not therefore need backlight, and for these reasons, electronic ink display device has the little quality of volume gently and the characteristic of power saving, thereby gradually is subject to popular attention.
Yet, also because the light and handy characteristic of electronic ink display device, so that its inside can't hold sound play device, so that it only can show image, but can't play sound, cause its restriction of using, so how to allow electronic ink display device have the function that sound is play, become now a kind of main development problem of electronic ink display.
Summary of the invention
The invention provides a kind of sound play device, be applied in the display unit, in order to play sound, wherein this display unit has the display base plate in order to show image.This sound play device includes a filter, an amplifier and at least one output unit.Filter is in order to receiving a voice signal, and this voice signal is carried out filtering, to produce a filtering signal.Amplifier couples this filter, in order to amplify this filtering signal, to produce an amplifying signal.At least one output unit is coupled to this amplifier, in order to play this amplifying signal according to a predetermined way.
Sound play device of the present invention, this filter is to this filtering such as voice signal grade, to produce this filtering signal.
Sound play device of the present invention, this predetermined way are a magnetic means, and this at least one output unit utilizes the mode of magnetic force to play this amplifying signal.
Sound play device of the present invention, this sound play device comprises many coils in addition, be arranged on this display base plate, and this at least one output unit is a plurality of magnetic elements, wherein these a plurality of magnetic elements have one first group of magnetic element and one second group of magnetic element, this first group of magnetic element and this second group of magnetic element be corresponding both sides that are arranged at this display base plate respectively, wherein in this first group of magnetic element one first magnetic pole of each magnetic element with respect to one second magnetic pole of each magnetic element in this second group of magnetic element.
Sound play device of the present invention, each magnetic element is respectively a magnet in these a plurality of magnetic elements.
Sound play device of the present invention, this predetermined way are a fluctuation mode, and the mode of this at least one output unit utilization fluctuation is play this amplifying signal.
Sound play device of the present invention, this at least one output unit is a piezoelectric element, and this piezoelectric element is arranged on this display base plate, and this piezoelectric element is in order to produce a fluctuation.
Sound play device of the present invention, this piezoelectric element are an audio tweeter.
Sound play device of the present invention, this predetermined way are an electrostatic means, and this at least one output unit utilizes the mode of static to play this amplifying signal.
Sound play device of the present invention, this sound play device comprises a bias voltage in addition, be arranged on this display base plate, and this at least one output unit is a plurality of electrode members, wherein these a plurality of electrode members have one first electrode member and one second electrode member, and this first electrode member and this second electrode member be corresponding both sides that are arranged at this display base plate respectively.
Sound play device of the present invention, each electrode member is a battery lead plate in these a plurality of electrode members.
Sound play device of the present invention, this display unit are a thin-film display.
Sound play device of the present invention, this display unit are an electronic ink display.
The present invention provides a kind of sound playing method in addition, is applied to have in the display unit of an imaged substrate, and in order to play sound, wherein this display base plate is in order to show image.This sound playing method comprises the following steps: step a: receive a voice signal, and this voice signal is carried out filtering, to produce a filtering signal; Step b: amplify this filtering signal, produce an amplifying signal; Step c: play this amplifying signal according to a predetermined way.
Sound playing method of the present invention, step a are to this filtering such as voice signal grade, to produce this filtering signal.
Sound playing method of the present invention, this predetermined way of step c is a magnetic means, this step c utilizes the mode of magnetic force to play this amplifying signal.
Sound playing method of the present invention, step c comprises: step c1: many coils are set on this display base plate; Step c2: one first group of magnetic element and one second group of magnetic element are set respectively in the both sides of this display base plate, wherein in this first group of magnetic element one first magnetic pole of each magnetic element with respect to one second magnetic pole of each magnetic element in this second group of magnetic element; And step c3: produce magnetic force by this first group of magnetic element and this second group of magnetic element, to play this amplifying signal.
Sound playing method of the present invention, each magnetic element is respectively a magnet in these a plurality of magnetic elements.
Sound playing method of the present invention, this predetermined way of step c are a fluctuation mode, and this step c utilizes the mode of fluctuation to play this amplifying signal.
Sound playing method of the present invention, step c comprises: step c4: a piezoelectric element is set on this display base plate; And step c5: produce fluctuation by this piezoelectric element, to play this amplifying signal.
Sound playing method of the present invention, this piezoelectric element are an audio tweeter.
Sound playing method of the present invention, this predetermined way of step c is an electrostatic means, this step c utilizes the mode of static to play this amplifying signal.
Sound playing method of the present invention, step c comprises: step c6: a bias voltage is set on this display base plate; Step c7: one first electrode member and one second electrode member are set respectively in the both sides of this display base plate; And step c8: produce static by this first electrode member and this second electrode member, to play this amplifying signal.
Sound playing method of the present invention, described the first electrode member and described the second electrode member are respectively a battery lead plate.
Sound play device of the present invention and method thereof, in the limited space of thin-film display, thin-film display can be possessed the function of sound broadcast, and solving whereby the known film display can't sonorificly limit, and the user is provided more multiple result of use.
Description of drawings
Fig. 1 is the schematic diagram of sound play device of the present invention.
Fig. 2 A is the end view of an embodiment of at least one output unit of sound play device of the present invention.
Fig. 2 B is the equivalent circuit diagram of an embodiment of sound play device of the present invention.
Fig. 3 A is the end view of another embodiment of at least one output unit of sound play device of the present invention.
Fig. 3 B is the equivalent circuit diagram of another embodiment of sound play device of the present invention.
Fig. 4 A is the end view of another embodiment of at least one output unit of sound play device of the present invention.
Fig. 4 B is the equivalent circuit diagram of another embodiment of sound play device of the present invention.
Fig. 5 is the flow chart of steps of sound playing method of the present invention.
Fig. 6 A is the flow chart of steps of an embodiment of the step S54 of sound playing method of the present invention.
Fig. 6 B is the flow chart of steps of another embodiment of the step S54 of sound playing method of the present invention.
Fig. 6 C is the flow chart of steps of another embodiment of the step S54 of sound playing method of the present invention.
Embodiment
See also Fig. 1, Fig. 1 is the schematic diagram of sound play device of the present invention.As shown in Figure 1, the invention provides a kind of sound play device 10, it is applied in the display unit (not shown), and in order to play sound, wherein the display unit (not shown) has the display base plate (not shown) in order to show image.In an embodiment, the display unit (not shown) is a thin-film display (film display), and in an embodiment, the display unit (not shown) is an electronic ink display (Electronic ink display).Sound play device 10 comprises a filter 12, an amplifier 14 and at least one output unit 16.Filter 12 is in order to receive a voice signal S
AU, and to this voice signal S
AUCarry out filtering, to produce a filtering signal S
FIn an embodiment, filter 12 is with voice signal S
AUFiltering such as grade (Equalization Filtering) is to produce a filtering signal S
F, the purpose of filtering such as grade is the best audible frequency of the output unit 16 of efficient utilization rear end.Amplifier 14 couples filter 12, in order to amplify this filtering signal S
F, to produce an amplifying signal S
AMAt least one output unit 16 is coupled to amplifier 14, in order to play this amplifying signal S according to a predetermined way
AM
See also Fig. 1 and Fig. 2 A, Fig. 2 A is the end view of an embodiment of at least one output unit of sound play device of the present invention.Shown in Fig. 2 A, in the present embodiment, this predetermined way is a magnetic means, and this at least one output unit 16 utilizes the mode of magnetic force to play this amplifying signal.In the present embodiment, sound play device 10 comprises many coils 22 in addition, is arranged on this display base plate 20, and these many coils 22 are surrounded on the periphery of this display base plate 20, therefore can not affect display base plate 20 show images.This at least one output unit 16 is a plurality of magnetic elements 161,162, wherein these a plurality of magnetic elements 161,162 have one first group of magnetic element 161 and one second group of magnetic element 162, this first group of magnetic element 161 and this second group of magnetic element 162 be corresponding both sides that are arranged at this display base plate 20 respectively, wherein in this first group of magnetic element 161 one first magnetic pole N of each magnetic element with respect to one second magnetic pole S of each magnetic element in this second group of magnetic element 162.And in an embodiment, each magnetic element is respectively a magnet in these a plurality of magnetic elements 161,162.The present embodiment utilizes the different magnetic force that produce of ornaments mode of the magnetic pole of magnet, further with amplifying signal S
AMPlay.
See also Fig. 2 B, Fig. 2 B is the equivalent circuit diagram of an embodiment of sound play device of the present invention.Shown in Fig. 2 B, in above-described embodiment, utilize magnetic force to play this amplifying signal S
AMEquivalent circuit diagram namely shown in Fig. 2 B, wherein magnet can equivalence be the resistance R inductance L of connecting, and produces whereby magnetic force, can be with amplifying signal S
AMDisseminate, reach the effect that plays sound.In the present embodiment, the annexation of sound play device 10 connects amplifier 14 by filter 12 and is connected to magnet (equivalence is resistance R series inductance L) again shown in Fig. 2 B.
See also Fig. 1 and Fig. 3 A, Fig. 3 A is the end view of another embodiment of at least one output unit of sound play device of the present invention.As shown in Figure 3A, in another embodiment, this predetermined way is a fluctuation mode, and this at least one output unit 16 utilizes the mode of piezoelectricity to play this amplifying signal S
AMWherein this at least one output unit 16 is a piezoelectric element 164, and this piezoelectric element 164 is arranged on this display base plate 20, and this piezoelectric element 164 is in order to produce fluctuation.And in an embodiment, this piezoelectric element 164 is an audio tweeter.
See also Fig. 3 B, Fig. 3 B is the equivalent circuit diagram of another embodiment of sound play device of the present invention.Shown in Fig. 3 B, above-described embodiment utilizes the mode of piezoelectricity to play amplifying signal S
AMEquivalent circuit diagram namely shown in Fig. 3 B, wherein piezoelectric element can equivalence be an oscillator 1641, produces whereby fluctuation, can be with amplifying signal S
AMDisseminate, reach the effect that plays sound.In the present embodiment, the annexation of sound play device 10 connects amplifier 14 by filter 12 and is connected to piezoelectric element (equivalence is oscillator 1641) again shown in Fig. 3 B.
See also Fig. 4 A, Fig. 4 A is the end view of an embodiment of at least one output unit of sound play device of the present invention.Shown in Fig. 4 A, in another embodiment, this predetermined way is an electrostatic means, and this at least one output unit 16 utilizes the mode of static to play this amplifying signal S
AM Sound play device 10 comprises a bias voltage (Bias) voltage 26 in addition, be arranged on this display base plate 20, and this at least one output unit 16 is a plurality of electrode members, wherein these a plurality of electrode members have one first electrode member 165 and one second electrode member 166, and this first electrode member 165 and the second electrode member 166 be corresponding both sides that are arranged at this display base plate 20 respectively.And in an embodiment, wherein each electrode member is a battery lead plate in these a plurality of electrode members.In the present embodiment, owing to be provided with bias voltage 26 on the display base plate 20, so the electric charge that electrode member produces can cause display base plate 20 generation vibrations and reach whereby the effect that plays sound.In addition, in an embodiment, each electrode member is the battery lead plate of a transparent palisade in these a plurality of electrode members.The battery lead plate of transparent palisade can be arranged on the display base plate 20 whereby, because it is transparent, so can not affect display unit (not shown) playing video.
See also Fig. 4 B, Fig. 4 B is the equivalent circuit diagram of another embodiment of sound play device of the present invention.Shown in Fig. 4 B, above-described embodiment utilizes static to play amplifying signal S
AMEquivalent circuit diagram namely shown in Fig. 4 B, wherein those battery lead plate systems can equivalence be a capacitor C, produce whereby static, can be with amplifying signal S
AMDisseminate, reach the effect that plays sound.In the present embodiment, the annexation of sound play device 10 connects amplifier 14 by filter 12 and is connected to battery lead plate (equivalence is capacitor C) again shown in Fig. 4 B.
See also Fig. 5, Fig. 5 is the flow chart of steps of sound playing method of the present invention.As shown in Figure 5, another embodiment of the present invention is a kind of sound playing method, is applied to have in the display unit of an imaged substrate, and in order to play sound, wherein this display base plate is in order to show image.Sound playing method includes the following step:
S50: receive a voice signal, and this voice signal is carried out filtering, to produce a filtering signal; In an embodiment, this step is to this filtering such as voice signal grade, to produce this filtering signal.
S52: amplify this filtering signal, produce an amplifying signal; And
S54: play this amplifying signal according to a predetermined way.
See also Fig. 6 A, Fig. 6 A is the flow chart of steps of an embodiment of the step S54 of sound playing method of the present invention.In an embodiment, this predetermined way of step S54 is a magnetic means, and this step S54 utilizes the mode of magnetic force to play this amplifying signal.As shown in Figure 6A, wherein step S54 comprises:
S541: many coils are set on this display base plate;
S542: one first group of magnetic element and one second group of magnetic element are set respectively in the both sides of this display base plate, wherein in this first group of magnetic element one first magnetic pole of each magnetic element with respect to one second magnetic pole of each magnetic element in this second group of magnetic element; And
S543: produce magnetic force by this first group of magnetic element and this second group of magnetic element, to play this amplifying signal.In an embodiment, each magnetic element is respectively a magnet in these a plurality of magnetic elements.
See also Fig. 6 B, Fig. 6 B is the flow chart of steps of another embodiment of the step S54 of sound playing method of the present invention.In another embodiment, this predetermined way of step S54 is a fluctuation mode, and this step S54 utilizes the mode of fluctuation to play this amplifying signal.Shown in Fig. 6 B, wherein step S54 comprises:
S544 a: piezoelectric element is set on this display base plate; And
S545: produce fluctuation by this piezoelectric element, to play this amplifying signal.In an embodiment, this piezoelectric element is an audio tweeter.
See also Fig. 6 C, Fig. 6 C is the flow chart of steps of another embodiment of the step S54 of sound playing method of the present invention.In another embodiment, this predetermined way is an electrostatic means, and this step S54 utilizes the mode of static to play this amplifying signal.Shown in Fig. 6 C, wherein step S54 comprises:
S546 a: bias voltage is set on this display base plate;
S547: one first electrode member and one second electrode member are set respectively in the both sides of this display base plate; And
S548: produce static by this first electrode member and this second electrode member, to play this amplifying signal.In an embodiment, electrode member is a battery lead plate.
Each embodiment that sound play device of the present invention and method thereof propose, pass through respectively the mode of magnetic force, piezoelectricity and static, in the limited space of thin-film display, thin-film display can be possessed the function of sound broadcast, solving whereby the known film display can't sonorificly limit, and the user is provided more multiple result of use.
The above only is preferred embodiment of the present invention; so it is not to limit scope of the present invention; any personnel that are familiar with the technology; without departing from the spirit and scope of the present invention; can do on this basis further improvement and variation, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
Being simply described as follows of symbol in the accompanying drawing:
10: sound play device
12: filter
14: amplifier
16: at least one output unit
20: display base plate
22: coil
26: bias voltage
161,162: magnetic element
164: piezoelectric element
165,166: electrode member
1641: oscillator
R: resistance
L: inductance
C: electric capacity
S
AU: voice signal
S
F: filtering signal
S
AM: amplifying signal
S50、S52、S54、
S541～S548: method step.
Claims (20)
1. a sound play device is characterized in that, is applied in the display unit, and in order to play sound, wherein this display unit has the display base plate in order to show image, and this sound play device includes:
One filter in order to receiving a voice signal, and carries out filtering to this voice signal, to produce a filtering signal;
One amplifier couples this filter, in order to amplify this filtering signal, to produce an amplifying signal; And
At least one output unit is coupled to this amplifier, and in order to play this amplifying signal according to a predetermined way, this predetermined way is a magnetic means, and this at least one output unit utilizes the mode of magnetic force to play this amplifying signal;
This sound play device comprises many coils in addition, be arranged on this display base plate, and this at least one output unit is a plurality of magnetic elements, wherein these a plurality of magnetic elements have one first group of magnetic element and one second group of magnetic element, this first group of magnetic element and this second group of magnetic element be corresponding both sides that are arranged at this display base plate respectively, wherein in this first group of magnetic element one first magnetic pole of each magnetic element with respect to one second magnetic pole of each magnetic element in this second group of magnetic element.
2. sound play device according to claim 1 is characterized in that, this filter is to this filtering such as voice signal grade, to produce this filtering signal.
3. sound play device according to claim 1 is characterized in that, each magnetic element is respectively a magnet in these a plurality of magnetic elements.
4. sound play device according to claim 1 is characterized in that, this predetermined way is a fluctuation mode, and the mode of this at least one output unit utilization fluctuation is play this amplifying signal.
5. sound play device according to claim 4 is characterized in that, this at least one output unit is a piezoelectric element, and this piezoelectric element is arranged on this display base plate, and this piezoelectric element is in order to produce a fluctuation.
6. sound play device according to claim 5 is characterized in that, this piezoelectric element is an audio tweeter.
7. sound play device according to claim 1 is characterized in that, this predetermined way is an electrostatic means, and this at least one output unit utilizes the mode of static to play this amplifying signal.
8. sound play device according to claim 7, it is characterized in that, this sound play device comprises a bias voltage in addition, be arranged on this display base plate, and this at least one output unit is a plurality of electrode members, wherein these a plurality of electrode members have one first electrode member and one second electrode member, and this first electrode member and this second electrode member be corresponding both sides that are arranged at this display base plate respectively.
9. sound play device according to claim 8 is characterized in that, each electrode member is a battery lead plate in these a plurality of electrode members.
10. sound play device according to claim 1 is characterized in that, this display unit is a thin-film display.
11. sound play device according to claim 1 is characterized in that, this display unit is an electronic ink display.
12. a sound playing method is characterized in that, is applied to have in the display unit of a display base plate, in order to play sound, wherein this display base plate is in order to show image, and this sound playing method comprises the following steps:
Step a: receive a voice signal, and this voice signal is carried out filtering, to produce a filtering signal;
Step b: amplify this filtering signal, produce an amplifying signal; And
Step c: play this amplifying signal according to a predetermined way, this predetermined way is a magnetic means, and this step c utilizes the mode of magnetic force to play this amplifying signal;
Step c comprises:
Step c1: many coils are set on this display base plate;
Step c2: one first group of magnetic element and one second group of magnetic element are set respectively in the both sides of this display base plate, wherein in this first group of magnetic element one first magnetic pole of each magnetic element with respect to one second magnetic pole of each magnetic element in this second group of magnetic element; And
Step c3: produce magnetic force by this first group of magnetic element and this second group of magnetic element, to play this amplifying signal.
13. sound playing method according to claim 12 is characterized in that, step a is to this filtering such as voice signal grade, to produce this filtering signal.
14. sound playing method according to claim 12 is characterized in that, each magnetic element is respectively a magnet in these a plurality of magnetic elements.
15. sound playing method according to claim 12 is characterized in that, this predetermined way of step c is a fluctuation mode, and this step c utilizes the mode of fluctuation to play this amplifying signal.
16. sound playing method according to claim 15 is characterized in that, step c comprises:
Step c4 a: piezoelectric element is set on this display base plate; And
Step c5: produce fluctuation by this piezoelectric element, to play this amplifying signal.
17. sound playing method according to claim 16 is characterized in that, this piezoelectric element is an audio tweeter.
18. sound playing method according to claim 12 is characterized in that, this predetermined way of step c is an electrostatic means, and this step c utilizes the mode of static to play this amplifying signal.
19. sound playing method according to claim 18 is characterized in that, step c comprises:
Step c6 a: bias voltage is set on this display base plate;
Step c7: one first electrode member and one second electrode member are set respectively in the both sides of this display base plate; And
Step c8: produce static by this first electrode member and this second electrode member, to play this amplifying signal.
20. sound playing method according to claim 19 is characterized in that, described the first electrode member and described the second electrode member are respectively a battery lead plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810004375 CN101494810B (en) | 2008-01-22 | 2008-01-22 | Sound play device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810004375 CN101494810B (en) | 2008-01-22 | 2008-01-22 | Sound play device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101494810A CN101494810A (en) | 2009-07-29 |
| CN101494810B true CN101494810B (en) | 2013-02-06 |
Family
ID=40925158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810004375 Expired - Fee Related CN101494810B (en) | 2008-01-22 | 2008-01-22 | Sound play device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101494810B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004336293A (en) * | 2003-05-06 | 2004-11-25 | Seiko Epson Corp | Electro-optical device with sounding body, manufacturing method therefor and electronic unit |
| CN1589978A (en) * | 1999-10-22 | 2005-03-09 | 雅马哈株式会社 | Vibration source driving device |
| CN1643977A (en) * | 2002-02-05 | 2005-07-20 | 罗兰·P·特兰达菲尔 | Transducer motor/generator assembly |
| CN1980485A (en) * | 2005-12-09 | 2007-06-13 | 卡西欧计算机株式会社 | Flat display apparatus with speaker function |
| WO2007077438A1 (en) * | 2006-01-03 | 2007-07-12 | Warwick Audio Technologies Limited | Electrostatic loudspeakers |
-
2008
- 2008-01-22 CN CN 200810004375 patent/CN101494810B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1589978A (en) * | 1999-10-22 | 2005-03-09 | 雅马哈株式会社 | Vibration source driving device |
| CN1643977A (en) * | 2002-02-05 | 2005-07-20 | 罗兰·P·特兰达菲尔 | Transducer motor/generator assembly |
| JP2004336293A (en) * | 2003-05-06 | 2004-11-25 | Seiko Epson Corp | Electro-optical device with sounding body, manufacturing method therefor and electronic unit |
| CN1980485A (en) * | 2005-12-09 | 2007-06-13 | 卡西欧计算机株式会社 | Flat display apparatus with speaker function |
| WO2007077438A1 (en) * | 2006-01-03 | 2007-07-12 | Warwick Audio Technologies Limited | Electrostatic loudspeakers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101494810A (en) | 2009-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4793174B2 (en) | Electrostatic transducer, circuit constant setting method | |
| CN112075091A (en) | Electromagnetic actuator for panel audio speaker | |
| US8630435B2 (en) | Apparatus incorporating an adsorbent material, and methods of making same | |
| US8611583B2 (en) | Compact coaxial crossover-free loudspeaker | |
| JP2008113424A (en) | Control method of class-d amplifier, control circuit for class-d amplifier, driving circuit for capacitive load, transducer, ultrasonic speaker, display device, directional acoustic system, and printer | |
| EP2178309A2 (en) | Method and electronic device for driving a capacitance electro-acoustic transducer | |
| CN203840179U (en) | Receiver device with U-shaped armature | |
| CN101494810B (en) | Sound play device and method | |
| US20200228898A1 (en) | Phase-shifting actuator driving signals and panel audio loudspeakers using the same | |
| US10993032B2 (en) | Bending actuators and panel audio loudspeakers including the same | |
| JP7203213B2 (en) | Moving magnet actuator with coil for panel audio speaker | |
| US8385570B2 (en) | Electret transducer with solar power and amplifier circuitry | |
| CN201307927Y (en) | Soft coating woofer speaker | |
| CN111383587A (en) | Display microphone device | |
| CN113302948A (en) | Actuator with compliant member and panel audio speaker including actuator | |
| US20090154732A1 (en) | Audio playing module and method of the same | |
| CN206117961U (en) | Earphone core and earphone | |
| CN101600139A (en) | sound-producing device | |
| CN206908813U (en) | More driving ultra-thin panel full frequency speakers | |
| CN209250879U (en) | The compound electroacoustic transducer of moving-coil electrostatic | |
| CN114424584A (en) | Moving magnetic actuator with voice coil | |
| CN102790936B (en) | Hysteresis-free electrodynamic transducer with motional impedance rectifying return circuit | |
| CN108900956A (en) | Reduced form full-range cabinet | |
| CN101610443A (en) | Sound-producing device | |
| CN209250878U (en) | The compound electroacoustic transducer of moving-coil electrostatic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20150122 |
|
| EXPY | Termination of patent right or utility model |