CN102789800A - DVD (Digital Video Disk) disc player supporting progressive scanning - Google Patents
DVD (Digital Video Disk) disc player supporting progressive scanning Download PDFInfo
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- CN102789800A CN102789800A CN2012102796825A CN201210279682A CN102789800A CN 102789800 A CN102789800 A CN 102789800A CN 2012102796825 A CN2012102796825 A CN 2012102796825A CN 201210279682 A CN201210279682 A CN 201210279682A CN 102789800 A CN102789800 A CN 102789800A
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Abstract
The embodiment of the invention discloses a DVD (Digital Video Disk) disc player supporting progressive scanning, which comprises a main module, a front end processing module, a decoding module, an operation I/O (Input/Output) module and a progressive scanning processing module, wherein the decoding module is used for decoding the MPEG (moving picture experts group) signal of the DVD to obtain video and audio signals; the operation I/O module is used for completing the input/output driving of input and output interfaces, a remote control, a display screen and the like of the DVD disc player; and the progressive scanning processing module is used for completing the progressive scanning conversion of the decoded video component signal so as to obtain high-quality progressive scanning video output. According to the DVD disc player supporting progressive scanning disclosed by the embodiment of the invention, in the progressive scanning processing, the video component signal is selected for the progressive scanning conversion, i.e. the signals of luminance Y and chromatic aberrations CB and CR are used as the video signals for the progressive scanning conversion, the choice is mainly based on that the luminance signal and the chromatic aberration signal are separately processed to reduce the interference of bright colors, and the quality of the progressive scanning conversion is guaranteed.
Description
Technical field
The present invention relates to the DVD technical field, relate in particular to a kind of DVD video disc player of lining by line scan supported.
Background technology
DVD is the English abbreviation of Video CD (Digital Video Disc), also is the English abbreviation of digital versatile disc (Digital Versatile DISc).DVD technology and series of products thereof (DVD family) began to come out 20 end of the centurys, generally were called digitizing technique and the product of 21 century by the world, were the revolutions of consumer electronics field and computer media storage system.
Along with improving constantly of living standards of the people, modern AV household products is also just progressively come in the common people family.DVD player with characteristics such as its high image quality, high tone quality, high capacity, multi-functional and long reproduction times, becomes premier digital audio-video equipment of new generation.Along with the rapid intensification of DVD market sale, and the popularizing of large-screen receiver, the hope of people's pursuing high quality seeing and hearing enjoyment is also more and more urgent.
Present television system is to adopt interlaced scanning system, because limit by condition at that time.It has several major defects, and interline flicker walks abreast, creeps and the edge sawtooth like large-area flicker.Corresponding existing typical a kind of DVD video disc player system comprises that CD is read and driving mechanism, signal processing system output interface and remote control and user interface.Stay alone with driving mechanism is mainly dynamo-electric by CD, feeding is dynamo-electric, line bag and bare headed servo the composition at CD; Signal processing system comprises: read output signal is handled and servo circuit, mainly accomplishes the dynamoelectric signal conversion, and primary data is resolved; The mpeg decode circuit, the main decompress(ion) of accomplishing based on the packed data of mpeg encoded mainly refers to audio, video data and additional such as accessory channel information such as caption informations here.Remote control and user interface are mainly accomplished mutual between DVD video disc player and the user, comprise adjusting of the choosing of switch, program, volume or the like.Output interface promptly obtains the data of each passage after the MPEG program is with data decompression, comprise video data, voice data, and other data etc. output in televisor and other equipment through corresponding interface then.Present television system is to adopt interlaced scanning system, and concrete system architecture is as shown in fig. 1, because limit by condition at that time, it has several major defects, like large-area flicker; Interline flicker; Walk abreast, creep and the edge sawtooth.
Summary of the invention
Problem based on the prior art existence; The embodiment of the invention provides a kind of DVD video disc player of lining by line scan supported; Not only support existing staggered scanning but also introduced and lined by line scan, can be good at and the televisor of the mechanism of lining by line scan cooperates the audio visual effect that has effectively promoted home entertaining.
Based on the problems referred to above, the embodiment of the invention provides a kind of DVD video disc player of lining by line scan supported, comprising:
Primary module, being used to video disc player provides power supply to form feed system, video drive output and various interface;
Movement unit block module is used to provide bare headed amplifying signal, accomplishes the turnover storehouse control to disc, the reading of laser signal, amplification and motor-driven function;
The front-end processing module; The bare headed pickoff signals that is used to accomplish preposition amplification is handled; Deliver to digital servo controller then, go to control that motor-drive circuit is accomplished control focus servo, tracking servo, the transfer motor is servo and spindle motor is servo by servo controller;
Decoder module is used to accomplish the decoding that DVD goes up mpeg signal, solves video and sound signal;
Operation I/o module, the input and the output that are used to accomplish to the IO interface of DVD player and remote controller displays screen etc. drive;
The processing module of lining by line scan is used to accomplish the video component signal that decoding is come out and carries out progressive scanning conversion, to obtain high-quality progressive scanned video output.
The brightness Y that the said module of lining by line scan is selected to export in the decoder module and aberration CB and CR signal reduce the light tone interference with the aberration separate processes, the quality of assurance progressive conversion as the vision signal of progressive conversion thereby give brightness.
The said module of lining by line scan comprises control module, storage unit, the unit of lining by line scan, wherein:
Control module is used to carry out bus line command, controls other circuit coordinates work, and has brightness Y and aberration CB and CR signal line by line scan analog/digital conversion and the digital-to-analog translation function of lining by line scan after handling before handling;
Storage unit is used for the picture signal of storage frame, and under the control of control module, reads in and write out picture signal to the unit of lining by line scan;
The unit of lining by line scan is used for progressive conversion and movement compensating circuit, carries out the motor pattern compensation to the data image signal progressive conversion with to signal.
The said module of lining by line scan also is used for Y-signal is realized the separation of row, field sync signal, and accomplishes the shaping to the line synchronizing signal of separating.
To sum up; Through embodiment of the present invention embodiment; Handle lining by line scan, select the video component signal to carry out progressive scanning conversion, promptly here with brightness Y and aberration CB, CR signal vision signal as progressive conversion; This is selected mainly to be based on the YUV separate processes and helps to reduce the light tone interference, guarantees the quality of progressive conversion.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a DVD video disc player structural representation of the prior art;
Fig. 2 is the DVD video disc player structural representation in the embodiment of the invention;
Fig. 3 is the modular structure synoptic diagram of lining by line scan in the embodiment of the invention;
Fig. 4 is the circuit design synoptic diagram in the module of lining by line scan in the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Enforcement of the present invention provides a kind of DVD video disc player of lining by line scan supported, comprising: primary module, and being used to video disc player provides power supply to form feed system, video drive output and various interface; Movement unit block module is used to provide bare headed amplifying signal, accomplishes the turnover storehouse control to disc, the reading of laser signal, amplification and motor-driven function; The front-end processing module; The bare headed pickoff signals that is used to accomplish preposition amplification is handled; Deliver to digital servo controller then, go to control that motor-drive circuit is accomplished control focus servo, tracking servo, the transfer motor is servo and spindle motor is servo by servo controller; Decoder module is used to accomplish the decoding that DVD goes up mpeg signal, solves video and sound signal; Operation I/o module, the input and the output that are used to accomplish to the IO interface of DVD player and remote controller displays screen etc. drive; The processing module of lining by line scan is used to accomplish the video component signal that decoding is come out and carries out progressive scanning conversion, to obtain high-quality progressive scanned video output.
Concrete; Fig. 1 shows the DVD video disc player that the support in the embodiment of the invention is lined by line scan, and the circuit board formation of the DVD video disc player that the present invention designed comprises 6 big modules: movement unit block module, operation I/O module, front-end processing module, decoder module, primary module and the processing module of lining by line scan.
Primary module: comprise video disc player power supply composition feed system, video drive output and various interface.
The movement unit module: comprise that bare headed picking up signal assembly, spindle motor, transplanting motor, front panel show, telepilot control, by assemblies such as key control, turnover storehouse controls.Bare headed amplifying signal is provided, accomplishes the turnover storehouse control to disc, laser signal reads, amplification and motor-driven etc.Shaven head picking up signal assembly: laser head adopts the bifocus type of focusing, and optical matrix is made up of 8 photodiodes, and optical matrix is transformed into current signal with the light signal that receives and delivers to pre-amplification circuit and carry out preposition processing and amplifying.
Leading portion processing module: comprise FEP and spindle motor driven unit, transfer motor-driven assembly to bare headed pickoff signals.Completion is handled the bare headed pickoff signals of preposition amplification, delivers to digital servo controller then, is gone to control that motor-drive circuit is accomplished control focus servo, tracking servo, the transfer motor is servo and spindle motor is servo by servo controller.FEP therefrom can extract the digital signal of the representative different content in the serial data frame coding from RF (radio frequency) signal of bare headed picking up signal assembly extraction video disc.For example: extract synchronous head signal and deliver to spindle servo circuit; The subcode signal that extracts the representative time is delivered to CPU, for CPU provides replay signal, also delivers to display board simultaneously, to show song and every minute and second; Isolate the data-signal of representing sound accompaniment and image, deliver to the mpeg decode circuit.Transmit because data are a section ground of framing code, read continuously again so use storer that data accumulation is got up, to become coherent data-signal.
Decoder module: comprise that digital servo controller, rom controller, audio/video decoder also have host CPU and audio D/A converter etc.Accomplish the decoding that DVD goes up the MPEGZ signal, solve video and sound signal.Digital servo controller is delivered to rom controller to the relevant signal that picks up from shaven head, after rom controller is handled, delivers to audio/video decoder then, accomplishes the decoding to audio-video signal, and audio frequency and video are exported through separately D/A conversion and driving again.
Operation I/O module: it is right to accomplish
The input of the IO interface of DVD player and remote controller displays screen etc. and output drive.
The processing module of lining by line scan: the main video component signal that decoding is come out of accomplishing carries out progressive scanning conversion, to obtain high-quality progressive scanned video output.
The processing module of lining by line scan is to realize lining by line scan the part of function.In decoder module output, select brightness Y and aberration CB, CR signal, as the vision signal of progressive conversion; This is selected mainly to be based on the YUV separate processes and helps to reduce the light tone interference, guarantees the quality of progressive conversion.Fig. 3 shows the structural representation of the processing module of lining by line scan, and comprising: control module, storage unit and the unit of lining by line scan, wherein:
Control module is used to carry out bus line command, controls other circuit coordinates work, and has brightness Y and aberration CB and CR signal line by line scan analog/digital conversion and the digital-to-analog translation function of lining by line scan after handling before handling;
Storage unit is used for the picture signal of storage frame, and under the control of control module, reads in and write out picture signal to the unit of lining by line scan;
The unit of lining by line scan is used for progressive conversion and movement compensating circuit, carries out the motor pattern compensation to the data image signal progressive conversion with to signal.
What also need further specify is that the module of lining by line scan here also needs the just separation of Y-signal realization row, field sync signal, and accomplishes the shaping to the line synchronizing signal of separating.
Circuit design in the processing module of lining by line scan adopts the MK9 module.MK9 module concrete structure as shown in Figure 4; Its SAA4977 is a control circuit; Play a part to carry out bus line command, control other circuit coordinates work, it also has Y, CR, CB signal line by line scan analog/digital conversion before handling and the digital-to-analog translation function after handling of lining by line scan concurrently in addition.SAA4955 is two digital high capacity frame signal storeies, is responsible for the picture signal of storage one frame respectively, and under the control of SAA4977 read/write command, reads in and write out picture signal to SAA4991.SAA4991 is the progressive conversion and the movement compensating circuit of core, plays the data image signal progressive conversion and signal is carried out the function that motor pattern compensates.Need row, field sync signal owing to line by line scan in the processing, and do not have this signal in the decoding output.Therefore need design circuit to solve.Brightness signal Y contains this signal, can therefrom separate, and row, field sync signal separating chips are selected the M52036 chip for use, and the line synchronizing signal of separating also needs further shaping, so adopt d type flip flop HC4538 to accomplish.
To sum up; Through embodiment of the present invention embodiment; Handle lining by line scan, select the video component signal to carry out progressive scanning conversion, promptly here with brightness Y and aberration CB, CR signal vision signal as progressive conversion; This is selected mainly to be based on the YUV separate processes and helps to reduce the light tone interference, guarantees the quality of progressive conversion.
More than DVD video disc player that the support that the embodiment of the invention provided is lined by line scan carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (4)
1. the DVD video disc player that support is lined by line scan is characterized in that, comprising:
Primary module, being used to video disc player provides power supply to form feed system, video drive output and various interface;
Movement unit block module is used to provide bare headed amplifying signal, accomplishes the turnover storehouse control to disc, the reading of laser signal, amplification and motor-driven function;
The front-end processing module; The bare headed pickoff signals that is used to accomplish preposition amplification is handled; Deliver to digital servo controller then, go to control that motor-drive circuit is accomplished control focus servo, tracking servo, the transfer motor is servo and spindle motor is servo by servo controller;
Decoder module is used to accomplish the decoding that DVD goes up mpeg signal, solves video and sound signal;
Operation I/o module, the input and the output that are used to accomplish to the IO interface of DVD player and remote controller displays screen etc. drive;
The processing module of lining by line scan is used to accomplish the video component signal that decoding is come out and carries out progressive scanning conversion, to obtain high-quality progressive scanned video output.
2. the DVD video disc player that support as claimed in claim 1 is lined by line scan; It is characterized in that; Brightness Y that exports in the said module selection decoder module of lining by line scan and aberration CB and CR signal are as the vision signal of progressive conversion; Reduce the light tone interference thereby give brightness and aberration separate processes, guarantee the quality of progressive conversion.
3. the DVD video disc player that support as claimed in claim 2 is lined by line scan is characterized in that, the said module of lining by line scan comprises control module, storage unit, the unit of lining by line scan, wherein:
Control module is used to carry out bus line command, controls other circuit coordinates work, and has brightness Y and aberration CB and CR signal line by line scan analog/digital conversion and the digital-to-analog translation function of lining by line scan after handling before handling;
Storage unit is used for the picture signal of storage frame, and under the control of control module, reads in and write out picture signal to the unit of lining by line scan;
The unit of lining by line scan is used for progressive conversion and movement compensating circuit, carries out the motor pattern compensation to the data image signal progressive conversion with to signal.
4. the DVD video disc player that support as claimed in claim 3 is lined by line scan is characterized in that, the said module of lining by line scan also is used for Y-signal is realized the separation of row, field sync signal, and accomplishes the shaping to the line synchronizing signal of separating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102796825A CN102789800A (en) | 2012-08-07 | 2012-08-07 | DVD (Digital Video Disk) disc player supporting progressive scanning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102796825A CN102789800A (en) | 2012-08-07 | 2012-08-07 | DVD (Digital Video Disk) disc player supporting progressive scanning |
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| CN102789800A true CN102789800A (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102796825A Pending CN102789800A (en) | 2012-08-07 | 2012-08-07 | DVD (Digital Video Disk) disc player supporting progressive scanning |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009086A (en) * | 2006-01-25 | 2007-08-01 | 普诚科技股份有限公司 | Image playing device, system and method |
| US20080247455A1 (en) * | 2003-07-09 | 2008-10-09 | Mediatek Inc. | Video signal processing apparatus to generate both progressive and interlace video signals |
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2012
- 2012-08-07 CN CN2012102796825A patent/CN102789800A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080247455A1 (en) * | 2003-07-09 | 2008-10-09 | Mediatek Inc. | Video signal processing apparatus to generate both progressive and interlace video signals |
| CN101009086A (en) * | 2006-01-25 | 2007-08-01 | 普诚科技股份有限公司 | Image playing device, system and method |
Non-Patent Citations (1)
| Title |
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| 刘智贤: "逐行扫描DVD视盘机", 《HTTPS://VPN.HW.SIPO/PROXY*74362644/THESIS_Y636683.ASPX》 * |
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Application publication date: 20121121 |