CN101616245A - A kind of optical display TV with Kara OK function - Google Patents
A kind of optical display TV with Kara OK function Download PDFInfo
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- CN101616245A CN101616245A CN200910108496A CN200910108496A CN101616245A CN 101616245 A CN101616245 A CN 101616245A CN 200910108496 A CN200910108496 A CN 200910108496A CN 200910108496 A CN200910108496 A CN 200910108496A CN 101616245 A CN101616245 A CN 101616245A
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Abstract
The invention discloses a kind of optical display TV, comprising: the display floater that is used for display video information with Kara OK function; Export the drive unit of described video information, comprise video inputs; Loud speaker comprises audio input end; Housing is used for fixing described display floater, drive unit, loud speaker; Also comprise: digital delay reverberation circuit, comprise microphone input, A/D converter, random asccess memory, D/A converter and control logic circuit, described microphone input connects the input of A/D converter, the output of A/D converter connects the input of described random asccess memory, the output of described random asccess memory connects described D/A converter input, the output of D/A converter connects the audio input end of described loud speaker, and control logic circuit connects described A/D converter, random asccess memory and D/A converter.Its OK a karaoke club of optical display TV of the present invention ok outputs mellow and clear sound, the effect that echoes is good.
Description
Technical field
The present invention relates to multimedia technology field, particularly relate to a kind of optical display TV with Kara OK function.
Background technology
OK a karaoke club ok is a kind of a kind of public recreation mode that widely adopts.Recently, this entertainment way also progresses into family.
The system that general family OK a karaoke club ok adopts VCD or DVD player, television set and audio amplifier to constitute.Television set generally comprises the video inputs mouth, and audio amplifier comprises audio input port, and VCD or DVD then can distinguish output video and audio signal to television set and sound equipment.For realizing OK a karaoke club ok function, VCD or DVD player also comprise audio input port, input user's singing voice signals.These singing voice signals are handled through VCD or DVD player, mix into song background sound, and output to audio amplifier together, and the user just can hear from the song of singing and have the accompaniment effect like this.
Along with developing rapidly of display technology, LCD display, light-emitting diode display, PDP display etc. have progressively replaced traditional CRT monitor.Such as, the disclosed Chinese invention patent application of 2006.07.05 discloses a kind of control device and method of Kara-Ok remote controller capable of two-way communication No. 200410099319.0.
Described patent application technology is about control device and method of Kara-Ok remote controller capable of two-way communication, mainly be on karaoke machine and remote controller, to be respectively equipped with ultraviolet ray deliver letters portion and ultraviolet receiving part, when both sides use infra red signal communication, managed storage can effectively show on remote controller at energy such as audio-frequency music information in the karaoke machine or subscription state information, makes the user can see by the LCDs on the remote controller and sees the various information that are stored in the karaoke machine easily.
But, the general acoustical quality that produces of the family OK a karaoke club ok of prior art system is not good enough, the VCD or the DVD player that mainly are output video and audio frequency are not to be special OK a karaoke club ok system, it mainly still bears video and voice playing function, and therefore the circuit design aspect OK a karaoke club ok is perfect inadequately.
And the system configuration that television set separates with VCD or DVD player causes also that cost height, usage space are big, inconvenient problem with use.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of optical display TV that possesses OK a karaoke club ok function, its OK a karaoke club ok outputs mellow and clear sound, and the effect that echoes is good.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of optical display TV is provided, comprises: the display floater that is used for display video information; Export the drive unit of described video information, comprise video inputs; Loud speaker comprises audio input end; Housing is used for fixing described display floater, drive unit, loud speaker; Also comprise: digital delay reverberation circuit, comprise microphone input, A/D converter, random asccess memory, D/A converter and control logic circuit, described microphone input connects the input of A/D converter, the output of described A/D converter connects the input of described random asccess memory, the output of described random asccess memory connects described D/A converter input, the output of described D/A converter connects the audio input end of described loud speaker, and described control logic circuit connects described A/D converter, random asccess memory and D/A converter.
Wherein, connect first low pass filter between the input of described microphone input and A/D converter, connect second low pass filter between the output of described D/A converter and the audio input end of loud speaker.
Wherein, described digital delay reverberation circuit is the PT2399 integrated circuit.
Wherein, described microphone input is by two microphone socket (MO1, MO2) introduce signal, through overcoupling first electric capacity (c901), second electric capacity (c902), first series resistance (r901), second series resistance (r902) with signal level double operational (U1) after straight processing is input to, also comprise volume adjusting socket (UR901), its pin 1 links to each other with input signal by first coupling capacitance (c906), first coupling capacitance (c903), and the earth impedance that changes the microphone input signal by volume adjustment knob is regulated volume.
Wherein, microphone input signal after volume is regulated amplifies through first double operational (U1A), enter the reverberation (ECHO) of delaying time of described PT2399 integrated circuit afterwards and handle, the positive input of described first double operational (U1A) meets 1/2VCC by first divider resistance (r904), second divider resistance (r905).
Wherein, the pin 6 of described PT2399 integrated circuit is the voltage controlled oscillator input of the inner single-chip microcomputer delay line speed of control, and pin 5 is supervision ends of current frequency of oscillation, and pin 6 connects the earth resistance (r905) that changes the reverberation delay time, described earth resistance (r905) is 15K, time-delay 196ms.
Wherein, described PT2399 integrated circuit pin 15 and pin 16 constitute one by changing the inverting amplifier that outside capacitance-resistance value changes the input frequency response, signal input.
Wherein, the pin 8 of described PT2399 integrated circuit, pin 9, preemphasis-reference source that pin 10 constitutes an outside is provided with circuit, internal output terminal (DO0) compares with input signal after through this preemphasis-reference source circuit being set, finish the delay line that A/D changed and 1 data were sent into described PT2399 integrated circuit, the pin 11 of described PT2399 integrated circuit, pin 12 postemphasises-the reference source circuit with pin 7 formations, the pin 13 of described PT2399 integrated circuit, pin 14 constitutes an independent inverting amplifier, reference source end when pin 2 is inner amplifier single power supply, and by the 3rd electric capacity (c909) ground connection.
Wherein, the pin 15 of described PT2399 integrated circuit, pin 16 meet the first Resistor-Capacitor Unit (r909 that changes the input frequency response, r910, c921, c922), pin 12, pin 13, pin 14 connect second Resistor-Capacitor Unit (r913, r914, r911, c914, c915, c916) that changes the output frequency response, also comprise the UR902 integrated circuit, its pin 1 links to each other with the pin 12, pin 13, the pin 14 that change the output frequency response by the 4th electric capacity (c917), (r916's its pin 2 c919) links to each other with pin 15, pin 16 by changing the 3rd Resistor-Capacitor Unit of importing frequency response.
Wherein, the signal output part of described PT2399 integrated circuit is by the 4th Resistor-Capacitor Unit (c918, r915, c923) connect second double operational (U1B) reverse input end, second double operational (U1B) output is by second coupling capacitance (c925) and resistance (r919, r922 r923) constitutes audio frequency left and right sides passage and is connected to output interface (CON5).
The invention has the beneficial effects as follows: it is not good enough to be different from the family OK a karaoke club ok of prior art system acoustical quality, the cost height, usage space is bigger, inconvenient problem with use, the invention provides a kind of optical display TV that possesses OK a karaoke club ok function, mainly be in optical display TV, to increase digital delay reverberation circuit, can change by microphone input carrying out A/D, become numerical data and postpone reverberation again, carry out the D/A conversion at last and carry out playback by loud speaker, because digital delay reverberation circuit and optical display TV integrative-structure, therefore do not account for usage space, remote controller can unite two into one, easy to operate, save cost; Adopt independent digital delay reverberation circuit simultaneously, can reach higher tonequality level, effect obviously is different from the subsidiary OK a karaoke club ok function of existing Disc player and causes the not good situation of its OK a karaoke club ok output tonequality.
Description of drawings
Fig. 1 is the structural representation of a kind of optical display TV with Kara OK function of the present invention;
Fig. 2 is the theory diagram of digital delay reverberation circuit among Fig. 1;
Fig. 3 is the cut-away view of digital delay reverberation circuit among Fig. 1;
Fig. 4 is the integrated circuit figure of digital delay reverberation circuit among Fig. 1.
Embodiment
Before introducing the present invention, simply introduce earlier OK a karaoke club ok of the present invention and other system relevant technologies:
1) OK a karaoke club ok technology:
OK a karaoke club ok generally adopts the time-delay reverberation circuit, its principle is: the simulation ambiophonic system adopts specific surround sound treatment circuit, stereosonic two paths of signals is carried out processed, according to human auditory system physiological two big characteristics, be masking effect and Haas effect, utilize electronic circuit to simulate one, and carry out playback with a plurality of loud speakers around sound field, build abundant three dimensions acoustics, make and look the hearer and produce extremely strong telepresenc.
So-called masking effect refers to a sound that rings, and tends to cover another the lighter sound that occurs simultaneously, and especially when these two sound were in identical frequency range, masking effect was more obvious.
And Haas effect be meant when direct sound wave and reverberation sound to time difference of intelligent's ear within the specific limits the time, people's ear just feels that direct sound wave and reverberation sound have combined together, is difficult to they differences again, just loudness increases to some extent.Reverberation sound is the sound wave of just being heard through complicated reflection by barriers such as walls.
According to physiological this two big effect of human auditory system, can infer such two conclusions: one, if direct sound wave and reverberation sound from same source of sound are arranged, so, lighter reverberation sound is often covered by the direct sound wave that rings, and people's ear is discovered the existence less than reverberation sound.If but reverberation sound is when intelligent's ear, postpone greatlyyer with direct sound wave in time, people's ear will be felt the existence of direct sound wave, and determines its position.Its two, longer to those time of delays, and with the incoherent reverberation sound of acoustic source, people's ear can not only be discovered the existence that it, and can provide distance perspective realistically, think it from around the space.
At present, the surround sound treatment circuit of most large screen color tvs, just according to above-mentioned principle, adopt analog loop around audio technology, with stereo left and right sides two paths of signals, the surround sound processor through special use postpones, processing such as phase shift, by surround sound loud speaker sounding, simulate surrounding sound effect again.
2) optical display TV technology
Here be that example illustrates with DLP (Digital Light Processing) rear projection display.DLP index word optical processing technique, this technology are wanted earlier image signal to be projected through after the digital processing again, and its Projection Display quality is fine.Different with the transmission-type imaging of LCD rear-projection, DLP is the reflection mode, and its system core is the Digital Micromirror Device-DMD (Digital Micro mirror Device) of TI (Texas Instrument) company exploitation.
DMD is the final link that shows digital visual information, and it is on the standard semiconductor processing procedure of CMOS, but adds the device of the rotating mechanism formation of a modulation reflecting surface.Usually the dmd chip micro mirror of 1,300,000 hinged installations of having an appointment, the corresponding pixel of micro mirror.The principle of DLP rear-projection is with the light source homogenizing with an integrator (Integrator), the trichromatic colour circle of color (Color Wheel) is arranged by one, light is divided into R, G, B three looks, micro mirror is when light source incline, light reflexes on the camera lens, is equivalent to " opening " state of optical switch.When micro mirror tilted in the other direction to light source, light reflected less than on the camera lens, was equivalent to " pass " state of optical switch.Its tonal gradation is by optical switch each second, and switch number of times ratio decides.Therefore adopt the method for synchronizing signal, handle the signal of telecommunication of numeral rotation eyeglass, transfer continuous light to GTG, cooperate R, G, three kinds of colors of B and color representation is come out, last projection imaging just can produce image high-quality, high tonal gradation.
The projector of DLP mainly contains monolithic DMD machine, biplate DMD machine and three DMD machines at present.According to different separately characteristics, different application is arranged.Wherein one chip is mainly used in the portable translucent product, and double-disk is applied to large-scale spliced display wall, and three-chip type is mainly used in super brightness projector.General DLP rear-projection TV has ordinary colour TV set 4-5 definition doubly, and the advantage of high brightness, high-contrast is arranged, and can reach 1000: 1 contrast.In addition, because the employing of digital technology improves the gradation of image grade, picture noise disappears, and image quality is more stable.
According to above technology, the inventor proposes a kind of brand-new optical display TV and the relevant programme of OK a karaoke club ok unification.Please consult Fig. 1 and Fig. 2 together, a kind of optical display TV with Kara OK function of the present invention mainly comprises:
The display floater 110 that is used for display video information;
Export the drive unit 120 of described video information, comprise video inputs;
Loud speaker 130 comprises audio input end;
Digital delay reverberation circuit 150, comprise the microphone input, the A/D converter, random asccess memory, D/A converter and control logic circuit, the signal of described microphone input input exports the input of A/D converter to, the output of described A/D converter connects the input of described random asccess memory, the output of described random asccess memory connects described D/A converter input, the signal of the output output of described D/A converter exports the audio input end of described loud speaker to, and described control logic circuit connects described A/D converter, random asccess memory and D/A converter.
This digital delay reverberation circuit mainly is made up of control logic circuit, A/D and D/A converter, random asccess memory etc.Its basic functional principle is: simulation microphone signal that will be to be postponed under control logic circuit control, is transformed into digital signal through the A/D converter, and deposits in the random asccess memory with serial data form.After depositing a period of time, still under the control of control logic circuit, take out serial data in order, the setting of data resting period in memory is the time of delay of microphone signal.Digital microphone signal after delayed again through the D/A change-over circuit, is reduced into the simulation microphone signal output after the delay.
Be different from that the family OK a karaoke club ok of prior art system acoustical quality is not good enough, cost is high, usage space is big, inconvenient problem with use, the invention provides a kind of optical display TV that possesses OK a karaoke club ok function, mainly be:
1) in optical display TV, increase digital delay reverberation circuit 150, can change by microphone input carrying out A/D, become numerical data and postpone reverberation again, carry out the D/A conversion at last and carry out playback by loud speaker, and:
I OK a karaoke club ok function is built in the optical display TV, and discrete relatively, more saves cost, make the consumption personnel more can receive price, if the power amplifier and the sound equipment of independent optical display TV and independent band OK a karaoke club ok function, the price of sale can be expensive a lot, in low sale colony be not easy to accept;
Ii at the situation of present acute housing shortage, can make the present invention be applicable to relatively little house because therefore digital delay reverberation circuit and optical display TV integrative-structure do not account for usage space;
The remote controller of iii optical display TV remote controller and OK a karaoke club ok can unite two into one, the user does not need to pick up a remote controller remote control in use, puts down then to pick up another remote controller again and carry out remote control, further makes easy to operate, remote controller only needs one, further saves cost;
2) adopt independent digital delay reverberation circuit 150 simultaneously, can reach higher tonequality level, effect obviously is different from the subsidiary OK a karaoke club ok function of existing Disc player and causes the not good situation of its OK a karaoke club ok output tonequality.
On concrete, this numeral time-delay reverberation Karaoke circuit is owing to adopt digital delay process, sample frequency height, the circuit bandwidth reaches 20Hz～20kHz, attenuation is less than-3dB in the whole frequency band scope, and the noise output voltage is less than-90dB, because of its circuit performance excellence, no matter be bass or soprano, equally mellow and full clear, so the very little effect that echoes of THD is splendid, the effect that echoes is splendid.
For increasing acoustical quality, can connect first low pass filter between the input of described microphone input and A/D converter, connect second low pass filter between the output of described D/A converter and the audio input end of loud speaker.
Described digital delay reverberation circuit of the present invention can be the PT2399 integrated circuit.
Consult Fig. 3 and Fig. 4, PT2399 integrated circuit circuit theory is as follows:
Microphone input by two microphone sockets (MO1, MO2) a pin socket is introduced signal, through coupling capacitance c901, c902 and series resistance r901, r902 is input to back level double operational U1 with signal every straight processing.1 pin that this moment, volume was regulated socket UR901 is by coupling capacitance c906, and c903 links to each other with input signal, and by the earth impedance of volume adjustment knob change microphone input signal, the realization volume is regulated.
Microphone signal after volume is regulated is realized the common emitter amplifying circuit through the anti-phase amplifier tube of U1A double operational one side amplifier, enters the PT2399 reverberation (ECHO) of delaying time afterwards and handles.The positive input of double operational is by divider resistance r904, and r905 meets 1/2VCC.
The PT2399 integrated circuit is built-in with A/D, and D/A converter can carry out digitized processing to the analoging sound signal of input, and its pin function sees following table for details.
| Pin | Symbol | I/O | Function | Pin | Symbol | I/O | Function |
| ??1 | ??V CC | ??- | Power end | ??9 | ??OP1-OUT | ??O | External capacitance resistance ware constitutes integrator |
| ??2 | ??V REF | ??O | Reference voltage output | ??10 | ??OP1-IN | ??I | External capacitance resistance ware constitutes integrator |
| ??3 | ??AGND | ??- | The earth terminal of analog circuit | ??11 | ??OP2-IN | ??I | External capacitance resistance ware constitutes integrator |
| ??4 | ??DGNA | ??- | The earth terminal of digital circuit | ??12 | ??OP2-OUT | ??O | External capacitance resistance ware constitutes integrator |
| ??5 | ??CLK-O | ??O | System clock output | ??13 | ??LPFZ-IN | ??I | External capacitance resistance ware constitutes low pass filter |
| ??6 | ??V CO | ??I | System clock frequency is adjusted | ??14 | ??LPF2-OUT | ??O | External capacitance resistance ware constitutes low pass filter |
| ??7 | ??CCI | ??I | Current Control 1 | ??15 | ??LPF1-OUT | ??O | External capacitance resistance ware constitutes low pass filter |
| ??8 | ??CC0 | ??I | Current Control 0 | ??16 | ??LPF1-IN | ??I | External capacitance resistance ware constitutes low pass filter |
Wherein, pin 6 is voltage controlled oscillator inputs of control inner single-chip microcomputer delay line (Delay Line) speed, and the voltage that changes this end can change the reverberation delay time, and can monitor current frequency of oscillation from pin 5.Can change the reverberation delay time by regulating pin 6 earth resistance resistances, general to hear that 7 continuous echoes of diminuendo are standard.Can select r905 through debugging herein is 15K, and about 196ms that delays time also can be other suitable delay times.
Preemphasis-reference source the setting of pin 8, pin 9, an outside of pin 10 formations is compared with input signal behind this circuit of output DO0 process of inner single-chip microcomputer, thereby finishes the conversion of A/D, then 1 data is sent into the delay line of single-chip microcomputer.
Reference source end when pin 2 is inner amplifier single power supply is by c909 ground connection.
In foregoing circuit figure, change the Resistor-Capacitor Unit r909 of pin 15, pin 16, r910, c921, the c922 value can change the input frequency response; And change pin 12, pin 13, Resistor-Capacitor Unit r913, the r914 of pin 14, r911, c914, c915, c916 value, can change the output frequency response.The user can be as required links to each other the pin 1 of UR902 and regulates resistance by knob and changes the output frequency response arbitrarily by c917 and 12,13,14 pin.By r916, c919 and 15, the 16 pin overwinding button adjusting joint resistance that is connected changes and imports frequency response with the pin 2 of UR902.
By c918, r915, c923 enter U1B double operational reverse input end and amplify through the signal after the reverberation circuit processing, and at last by coupling capacitance c925 and resistance r919, r922, r923 constitute audio frequency left and right sides passage and export CON5 to.
Certainly, to be not limited to be the PT2399 integrated circuit for described digital delay reverberation circuit of the present invention; It is the DLP projection TV that optical display TV of the present invention is not limited to, and can also be displays such as LCD, LED, PDP.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. optical display TV with Kara OK function comprises:
The display floater that is used for display video information;
Export the drive unit of described video information, comprise video inputs;
Loud speaker comprises audio input end;
Housing is used for fixing described display floater, drive unit, loud speaker;
It is characterized in that, comprising:
Digital delay reverberation circuit, comprise microphone input, A/D converter, random asccess memory, D/A converter and control logic circuit, described microphone input connects the input of A/D converter, the output of described A/D converter connects the input of described random asccess memory, the output of described random asccess memory connects described D/A converter input, the output of described D/A converter connects the audio input end of described loud speaker, and described control logic circuit connects described A/D converter, random asccess memory and D/A converter.
2. according to the described a kind of optical display TV of claim 1 with Kara OK function, it is characterized in that: connect first low pass filter between the input of described microphone input and A/D converter, connect second low pass filter between the output of described D/A converter and the audio input end of loud speaker.
3. according to the described a kind of optical display TV with Kara OK function of claim 1, it is characterized in that: described digital delay reverberation circuit is the PT2399 integrated circuit.
4. according to the described a kind of optical display TV of claim 3 with Kara OK function, it is characterized in that: described microphone input is by two microphone socket (MO1, MO2) introduce signal, through overcoupling first electric capacity (c901), second electric capacity (c902), first series resistance (r901), second series resistance (r902) is input to back level double operational (U1) with signal every straight processing, also comprise volume adjusting socket (UR901), its pin 1 is by first coupling capacitance (c906), first coupling capacitance (c903) links to each other with input signal, and the earth impedance that changes the microphone input signal by volume adjustment knob is regulated volume.
5. according to the described a kind of optical display TV of claim 4 with Kara OK function, it is characterized in that: the microphone input signal after volume is regulated amplifies through first double operational (U1A), enter the reverberation (ECHO) of delaying time of described PT2399 integrated circuit afterwards and handle, the positive input of described first double operational (U1A) meets 1/2VCC by first divider resistance (r904), second divider resistance (r905).
6. according to the described a kind of optical display TV of claim 3 with Kara OK function, it is characterized in that: the pin 6 of described PT2399 integrated circuit is the voltage controlled oscillator input of the inner single-chip microcomputer delay line speed of control, pin 5 is supervision ends of current frequency of oscillation, pin 6 connects the earth resistance (r905) that changes the reverberation delay time, described earth resistance (r905) is 15K, time-delay 196ms.
7. according to the described a kind of optical display TV with Kara OK function of claim 3, it is characterized in that: described PT2399 integrated circuit pin 15 and pin 16 constitute one by changing the inverting amplifier that outside capacitance-resistance value changes the input frequency response, signal input.
8. according to the described a kind of optical display TV of claim 3 with Kara OK function, it is characterized in that: the pin 8 of described PT2399 integrated circuit, pin 9, preemphasis-reference source that pin 10 constitutes an outside is provided with circuit, internal output terminal (DO0) compares with input signal after through this preemphasis-reference source circuit being set, finish the delay line that A/D changed and 1 data were sent into described PT2399 integrated circuit, the pin 11 of described PT2399 integrated circuit, pin 12 postemphasises-the reference source circuit with pin 7 formations, the pin 13 of described PT2399 integrated circuit, pin 14 constitutes an independent inverting amplifier, reference source end when pin 2 is inner amplifier single power supply, and by the 3rd electric capacity (c909) ground connection.
9. according to the described a kind of optical display TV of claim 3 with Kara OK function, it is characterized in that: the pin 15 of described PT2399 integrated circuit, pin 16 meets the first Resistor-Capacitor Unit (r909 that changes the input frequency response, r910, c921, c922), pin 12, pin 13, pin 14 meets the second Resistor-Capacitor Unit (r913 that changes the output frequency response, r914, r911, c914, c915, c916), also comprise the UR902 integrated circuit, its pin 1 is by the 4th electric capacity (c917) and the pin 12 that changes the output frequency response, pin 13, pin 14 links to each other, (r916 is c919) with pin 15 by changing the 3rd Resistor-Capacitor Unit of importing frequency response for its pin 2, pin 16 links to each other.
10. according to the described a kind of optical display TV of claim 3 with Kara OK function, it is characterized in that: the signal output part of described PT2399 integrated circuit is by the 4th Resistor-Capacitor Unit (c918, r915, c923) connect second double operational (U1B) reverse input end, second double operational (U1B) output is by second coupling capacitance (c925) and resistance (r919, r922 r923) constitutes audio frequency left and right sides passage and is connected to output interface (CON5).
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| CN200910108496A CN101616245A (en) | 2009-07-03 | 2009-07-03 | A kind of optical display TV with Kara OK function |
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| CN200910108496A CN101616245A (en) | 2009-07-03 | 2009-07-03 | A kind of optical display TV with Kara OK function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231726A (en) * | 2011-01-25 | 2011-11-02 | 北京捷讯华泰科技有限公司 | Virtual reality synthesis method and terminal |
| CN106210580A (en) * | 2016-08-30 | 2016-12-07 | 广州市微博电器实业有限公司 | A kind of K sings TV |
| CN113630561A (en) * | 2021-08-12 | 2021-11-09 | 深圳盛显科技有限公司 | Television splicing box circuit with intelligent control system |
-
2009
- 2009-07-03 CN CN200910108496A patent/CN101616245A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231726A (en) * | 2011-01-25 | 2011-11-02 | 北京捷讯华泰科技有限公司 | Virtual reality synthesis method and terminal |
| CN106210580A (en) * | 2016-08-30 | 2016-12-07 | 广州市微博电器实业有限公司 | A kind of K sings TV |
| CN113630561A (en) * | 2021-08-12 | 2021-11-09 | 深圳盛显科技有限公司 | Television splicing box circuit with intelligent control system |
| CN113630561B (en) * | 2021-08-12 | 2024-03-29 | 深圳盛显科技有限公司 | Television splice box circuit with intelligent control system |
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