CN103269221A - Play circuit and play system based on multiple players - Google Patents
Play circuit and play system based on multiple players Download PDFInfo
- Publication number
- CN103269221A CN103269221A CN2013101426473A CN201310142647A CN103269221A CN 103269221 A CN103269221 A CN 103269221A CN 2013101426473 A CN2013101426473 A CN 2013101426473A CN 201310142647 A CN201310142647 A CN 201310142647A CN 103269221 A CN103269221 A CN 103269221A
- Authority
- CN
- China
- Prior art keywords
- phase
- playing
- locked loop
- players
- play
- 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.)
- Pending
Links
Images
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention is applied to the field of circuits, and particularly relates to a play circuit and a play system based on multiple players. The phase position of alternating current supplied by the same mains supply is used as the standard of a plurality of phase-locked loop circuits, phase positions of time signals generated by a time generator are adjusted so that synchronous playing signals can be generated, therefore, a play controller regards the synchronous playing signals as the clock signals for media playing to play media, and the purpose of synchronous playing of the players can be achieved.
Description
Technical field
The invention belongs to circuit field, relate in particular to a kind of playing circuit based on a plurality of players and Play System.
Background technology
At present, with the quickening pace of modern life, the quickening of information updating speed, the form of media play is generally adopted in the transmission of information, thus the media information in a plurality of media players that upgrade in time, broadcast have synchronously become a kind of needs; In the large-scale shopping center, the renewal that object information needs in a plurality of players and broadcast synchronously bring unnecessary trouble with the exempt from customs examination client; The exhibition picture that large-scale exhibition display screen is play adopts a plurality of players to play the part picture simultaneously with integrant exhibition picture usually.
At present, the mode that synchronized multimedia is play is two kinds: a kind of mode is for adopting the crystal oscillator of same frequency in each player, there is following problem in this mode: the difference of crystal oscillator and peripheral element, the difference of operational environment, the crystal oscillator frequency that produces is variant, each player adopts different crystal oscillator frequencies to play, and causes broadcast asynchronous; Another kind of mode is for adopting the Internet communication synchronizing signal, and there is following problem in this mode: owing to there is network delay, cause each player plays asynchronous.
Summary of the invention
The object of the present invention is to provide a kind of playing circuit based on a plurality of players, be intended to solve with in the urban district, at the same medium of a plurality of player plays, perhaps a plurality of players are worked in coordination with when playing an integral body exhibition picture, the nonsynchronous problem of media play.
The present invention is achieved in that a kind of playing circuit based on a plurality of players, and described playing circuit based on a plurality of players comprises:
Mains supply, one or more clock generator, one or more playing controller and one or more phase-locked loop circuit;
Described mains supply connects the fixed phase input of one or more described phase-locked loop circuits, and the input end of clock of described phase-locked loop circuit and synchronous output end connect described clock generator and described playing controller respectively;
Described mains supply is used for providing the civil power alternating current; Described clock generator is used for providing described playing controller to play the required clock signal of medium; Described phase-locked loop circuit is used for correspondingly adjusting the phase place of described clock signal to generate synchronous play signal according to the phase place of described civil power alternating current; Described playing controller is used for playing media file according to described synchronous play signal.
The present invention also provides a kind of Play System based on a plurality of players, and described Play System based on a plurality of players comprises the playing circuit based on a plurality of players, and described playing circuit based on a plurality of players comprises:
Mains supply, one or more clock generator, one or more playing controller and one or more phase-locked loop circuit;
Described mains supply connects the fixed phase input of one or more described phase-locked loop circuits, and the input end of clock of described phase-locked loop circuit and synchronous output end connect described clock generator and described playing controller respectively;
Described mains supply is used for providing the civil power alternating current; Described clock generator is used for providing described playing controller to play the required clock signal of medium; Described phase-locked loop circuit is used for correspondingly adjusting the phase place of described clock signal to generate synchronous play signal according to the phase place of described civil power alternating current; Described playing controller is used for playing media file according to described synchronous play signal.
In the present invention, a plurality of phase-locked loop circuits are benchmark with the phase place of the alternating current that same mains supply provides, the phase place of the clock signal that the adjustment clock generator produces is to generate synchronous play signal, thereby, playing controller is with the clock signal of described synchronous play signal as media play, play medium, reach the purpose that a plurality of players are play synchronously.
Description of drawings
Fig. 1 is the circuit structure diagram based on the playing circuit of a plurality of players that the embodiment of the invention provides;
Fig. 2 is the physical circuit figure based on the playing circuit in the playing circuit of a plurality of players that the embodiment of the invention provides.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The structure based on the playing circuit of a plurality of players that Fig. 1 shows that the embodiment of the invention provides for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
A kind of playing circuit based on a plurality of players, described playing circuit based on a plurality of players comprises:
Mains supply 1, one or more clock generator 2, one or more playing controller 4 and one or more phase-locked loop circuit 3;
Described mains supply 1 connects the fixed phase input of one or more described phase-locked loop circuits 3, and the input end of clock of described phase-locked loop circuit 3 and synchronous output end connect described clock generator 2 and described playing controller 4 respectively;
Described mains supply 1 is used for providing the civil power alternating current; Described clock generator 2 is used for providing described playing controller 4 to play the required clock signal of medium; Described phase-locked loop circuit 3 is used for correspondingly adjusting the phase place of described clock signal to generate synchronous play signal according to the phase place of described civil power alternating current; Described playing controller 4 is used for playing media file according to described synchronous play signal.
As one embodiment of the invention, the frequency of the clock signal of described clock generator 2 outputs is 27MHZ.
As one embodiment of the invention, the frequency of the civil power alternating current that described mains supply 1 provides is 50HZ.
Fig. 2 shows the physical circuit based on the playing circuit in the playing circuit of a plurality of players that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
As one embodiment of the invention, described phase-locked loop circuit 3 adopts phase-locked loop chip U1;
Fixed phase input pin PD, the clock input pin CLK of described phase-locked loop chip U1 and synchronous output pin OUT connect the output of described mains supply 1, the output terminal of clock of described clock generator 2 and the input of described playing controller 4 respectively.
In the present embodiment, describedly comprise described clock generator 2, described playing controller 4, described phase-locked loop chip U1 based on the playing circuit in the playing circuit of a plurality of players; Wherein, the fixed phase input pin PD of described described phase-locked loop chip U1 based on each playing circuit in the playing circuit of a plurality of players links to each other with the output of described mains supply 1.
As another embodiment of the present invention, the present invention also provides a kind of Play System based on a plurality of players, and described Play System based on a plurality of players comprises the playing circuit based on a plurality of players, and described playing circuit based on a plurality of players comprises:
Mains supply 1, one or more clock generator 2, one or more playing controller 4 and one or more phase-locked loop circuit 3;
Described mains supply 1 connects the fixed phase input of one or more described phase-locked loop circuits 3, and the input end of clock of described phase-locked loop circuit 3 and synchronous output end connect described clock generator 2 and described playing controller 4 respectively;
Described mains supply 1 is used for providing the civil power alternating current; Described clock generator 2 is used for providing described playing controller 4 to play the required clock signal of medium; Described phase-locked loop circuit 3 is used for correspondingly adjusting the phase place of described clock signal to generate synchronous play signal according to the phase place of described civil power alternating current; Described playing controller 4 is used for playing media file according to described synchronous play signal.
As one embodiment of the invention, described phase-locked loop circuit 3 adopts phase-locked loop chip U1;
Fixed phase input pin PD, the clock input pin CLK of described phase-locked loop chip U1 and synchronous output pin OUT connect the output of described mains supply 1, the output terminal of clock of described clock generator 2 and the input of described playing controller 4 respectively.
As one embodiment of the invention, the frequency of the clock signal of described clock generator 2 outputs is 27MHZ.
As one embodiment of the invention, the frequency of the civil power alternating current that described mains supply 1 provides is 50HZ.
In order to explain the present invention better, frequency with the clock signal of clock generator 2 output is 27MHZ, the frequency of the civil power alternating current that mains supply 1 provides is 50HZ, a plurality of players are play corresponding part exhibition picture respectively to realize that playing whole exhibition picture is example, in conjunction with Fig. 2, the operation principle based on the playing circuit of a plurality of players is described:
The clock signal that phase-locked loop chip U1 produces from clock input pin CLK receive clock generator 2, this clock signal is the required clock signal of media play.Phase-locked loop chip U1 obtains the civil power alternating current that mains supply 1 provides from fixed phase input pin PD.More optimizedly, in advance mains supply 1 is carried out amplitude adjustment, filtering, then will with phase-locked loop chip U1 coupling, amplitude adjustment, filtered civil power alternating current offer the fixed phase input pin PD of phase-locked loop chip U1.
Phase-locked loop chip U1 adjusts the phase place of described clock signal to export synchronous play signal with the phase place of civil power alternating current, the frequency of described synchronous play signal also is 27MHZ; More optimizedly, by the phase discriminator among the phase-locked loop chip U1, the phase place of clock signal is adjusted into phase place homophase with the civil power alternating current.
In embodiments of the present invention, in the Play System based on a plurality of players, a plurality of phase-locked loop circuits are benchmark with the phase place of the alternating current that same mains supply provides, adjust the phase place (phase place of the clock signal that each clock generator that is used for playing synchronously produces is homophase not necessarily) of the clock signal of clock generator generation, to generate synchronous play signal, thereby, a plurality of playing controller are with the clock signal of described synchronous play signal as media play, play medium, reach the purpose of synchronous broadcast.When the same medium of a plurality of player plays, kept the synchronous of media play, avoided information to play the inconsistent trouble of bringing to the user; When a plurality of players are worked in coordination with the exhibition picture of playing an integral body, avoided broadcast and the nonsynchronous problem of other parts of the part exhibition picture in the whole exhibition picture.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the playing circuit based on a plurality of players is characterized in that, described playing circuit based on a plurality of players comprises:
Mains supply, one or more clock generator, one or more playing controller and one or more phase-locked loop circuit;
Described mains supply connects the fixed phase input of one or more described phase-locked loop circuits, and the input end of clock of described phase-locked loop circuit and synchronous output end connect described clock generator and described playing controller respectively;
Described mains supply is used for providing the civil power alternating current; Described clock generator is used for providing described playing controller to play the required clock signal of medium; Described phase-locked loop circuit is used for correspondingly adjusting the phase place of described clock signal to generate synchronous play signal according to the phase place of described civil power alternating current; Described playing controller is used for playing media file according to described synchronous play signal.
2. the playing circuit based on a plurality of players as claimed in claim 1 is characterized in that, described phase-locked loop circuit adopts phase-locked loop chip U1;
The fixed phase input pin of described phase-locked loop chip U1, clock input pin and synchronous output pin connect the output terminal of clock of the output of described mains supply, described clock generator and the input of described playing controller respectively.
3. the playing circuit based on a plurality of players as claimed in claim 1 is characterized in that, the frequency of the clock signal of described clock generator output is 27MHZ.
4. the playing circuit based on a plurality of players as claimed in claim 1 or 2 is characterized in that, the frequency of the civil power alternating current that described mains supply provides is 50HZ.
5. Play System based on a plurality of players, described Play System based on a plurality of players comprises the playing circuit based on a plurality of players, it is characterized in that, described playing circuit based on a plurality of players comprises:
Mains supply, one or more clock generator, one or more playing controller and one or more phase-locked loop circuit;
Described mains supply connects the fixed phase input of one or more described phase-locked loop circuits, and the input end of clock of described phase-locked loop circuit and synchronous output end connect described clock generator and described playing controller respectively;
Described mains supply is used for providing the civil power alternating current; Described clock generator is used for providing described playing controller to play the required clock signal of medium; Described phase-locked loop circuit is used for correspondingly adjusting the phase place of described clock signal to generate synchronous play signal according to the phase place of described civil power alternating current; Described playing controller is used for playing media file according to described synchronous play signal.
6. the Play System based on a plurality of players as claimed in claim 5 is characterized in that, described phase-locked loop circuit adopts phase-locked loop chip U1;
The fixed phase input pin of described phase-locked loop chip U1, clock input pin and synchronous output pin connect the output terminal of clock of the output of described mains supply, described clock generator and the input of described playing controller respectively.
7. the Play System based on a plurality of players as claimed in claim 6 is characterized in that, the frequency of the clock signal of described clock generator output is 27MHZ.
8. as claim 6 or 7 described Play Systems based on a plurality of players, it is characterized in that the frequency of the civil power alternating current that described mains supply provides is 50HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101426473A CN103269221A (en) | 2013-04-23 | 2013-04-23 | Play circuit and play system based on multiple players |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101426473A CN103269221A (en) | 2013-04-23 | 2013-04-23 | Play circuit and play system based on multiple players |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103269221A true CN103269221A (en) | 2013-08-28 |
Family
ID=49012833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101426473A Pending CN103269221A (en) | 2013-04-23 | 2013-04-23 | Play circuit and play system based on multiple players |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103269221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107239253A (en) * | 2016-03-29 | 2017-10-10 | 扬智科技股份有限公司 | The WLAN player of synchronous broadcasting speed, system and method |
| CN112752129A (en) * | 2019-10-31 | 2021-05-04 | 西安诺瓦星云科技股份有限公司 | Video source synchronous output method, device, system and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319989A (en) * | 1999-10-15 | 2001-10-31 | 松下电器产业株式会社 | Device for generating multi-channel indicated data, medium and information assembly |
| US20030093703A1 (en) * | 2001-11-09 | 2003-05-15 | Adc Dsl Systems, Inc. | Multiple dataport clock synchronization |
| CN1433142A (en) * | 2002-01-16 | 2003-07-30 | 株式会社东芝 | Voltage controlled oscillator circuit and its PLL circuit |
| CN1588989A (en) * | 2004-08-05 | 2005-03-02 | 联合信源数字音视频技术（北京）有限公司 | Method and its device for keeping display synchronization in video frequency decoding system |
| CN1889364A (en) * | 2006-07-21 | 2007-01-03 | 北京中星微电子有限公司 | Clock generating device based on lock-phase ring |
-
2013
- 2013-04-23 CN CN2013101426473A patent/CN103269221A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319989A (en) * | 1999-10-15 | 2001-10-31 | 松下电器产业株式会社 | Device for generating multi-channel indicated data, medium and information assembly |
| US20030093703A1 (en) * | 2001-11-09 | 2003-05-15 | Adc Dsl Systems, Inc. | Multiple dataport clock synchronization |
| CN1433142A (en) * | 2002-01-16 | 2003-07-30 | 株式会社东芝 | Voltage controlled oscillator circuit and its PLL circuit |
| CN1588989A (en) * | 2004-08-05 | 2005-03-02 | 联合信源数字音视频技术（北京）有限公司 | Method and its device for keeping display synchronization in video frequency decoding system |
| CN1889364A (en) * | 2006-07-21 | 2007-01-03 | 北京中星微电子有限公司 | Clock generating device based on lock-phase ring |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107239253A (en) * | 2016-03-29 | 2017-10-10 | 扬智科技股份有限公司 | The WLAN player of synchronous broadcasting speed, system and method |
| CN107239253B (en) * | 2016-03-29 | 2020-05-12 | 扬智科技股份有限公司 | Wireless local area network player, system and method for synchronizing playing speed |
| CN112752129A (en) * | 2019-10-31 | 2021-05-04 | 西安诺瓦星云科技股份有限公司 | Video source synchronous output method, device, system and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102045124B (en) | Rack-mount synchronous Ethernet architecture and clock synchronization control method | |
| CN107465474B (en) | The clock synchronization system and method for digital control system bus apparatus | |
| CN202995143U (en) | Glasses device and display device | |
| JP2009521882A5 (en) | ||
| CN112653532A (en) | Clock synchronization method, device and system | |
| CN106911950A (en) | A kind of video synchronization method and system | |
| CN110888619A (en) | Digital audio power amplifier synchronization circuit and method and electronic equipment | |
| JPWO2008129816A1 (en) | Clock synchronization method | |
| CN103269221A (en) | Play circuit and play system based on multiple players | |
| CN101146232B (en) | Methods and devices to use two different clocks in a television digital encoder | |
| CN103019639B (en) | A kind of multiprocessor splicing synchronous display system | |
| CN106341127A (en) | Video clock recovery method and apparatus thereof | |
| JP2011199872A (en) | Apparatus, method and system for synchronization and 3d display apparatus using the same | |
| KR101545318B1 (en) | Clock generating method and data transmitting method in multimedia source | |
| CN106603187A (en) | Method for automatically selecting reference source of clock device and clock device | |
| JP2013247680A (en) | Multiple synchronous iq demodulators | |
| JP2003209539A (en) | System for generating multiple clocks | |
| JP2017016041A (en) | Still image transmission-reception synchronous reproducing apparatus | |
| CN101448074B (en) | Generation device of multi-cutting horizontal synchronization signal and method thereof | |
| CN203813918U (en) | LED illumination devices and wireless loudspeaker box system | |
| JP2004056229A (en) | Apparatus and system for optical transmission | |
| JP2013005029A (en) | Reproduction controller, synchronous reproduction method, and program | |
| CN104244071A (en) | Audio playing system and control method | |
| CN100433558C (en) | Synchronous signal transformation device of black-white camera synchronous locked | |
| CN213818022U (en) | 3D LED film screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination |