CN104125414A - Method, device and system for processing audio/video formats - Google Patents
Method, device and system for processing audio/video formats Download PDFInfo
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Abstract
The invention provides a method, a device and a system for processing audio/video formats. The processing method comprises the following steps of: acquiring the audio/video format supported by each path of a display at the downstream of a signal source, wherein n paths of the displays at the downstream of the signal source are provided, and n is not less than 2 and is an integer; comparing the audio/video formats supported by all various paths of the displays at the downstream of the signal source; if the various paths of the displays at the downstream of the signal source have the co-supported audio/video formats, sending the co-supported audio/video formats of the various paths of the displays to a storage, thus the storage stores the co-supported audio/video formats of the various paths of the displays, and then the signal source outputs audio/video data to the outside according to the co-supported audio/video formats of the various paths of the displays. Therefore, by virtue of the method for processing audio/video formats provided by the invention, the audio/video formats output by the signal source can be supported by all the displays at the downstream.
Description
Technical field
The present invention relates to audio frequency and video and play field, relate in particular to a kind of processing method, device and system of audio frequency and video form.
Background technology
In order to realize Multiple DisPlay, show identical signal simultaneously, can connect a HDMI/DVI distributor in the downstream of signal source, by this HDMI/DVI distributor, the signal replication of signal source output is become to multiple signals, then these multiple signals are transported to respectively on Multiple DisPlay, for display, display the play.
In order to realize Multiple DisPlay, show identical signal simultaneously, also need the audio-video signal form of signal source output to be supported by all displays in downstream.
In prior art, the audio-video signal form of signal source output is according to wherein a road display support audio frequency and video form is definite.But, the audio frequency and video form that different displays are supported may be different, when being arranged in the Multiple DisPlay in signal source downstream, exist one or more display during the form of the audio-video signal of supporting signal source output, these displays just can not be play these audio frequency and video so, thereby also just can not realize the object that all displays being connected with signal source is play same signal simultaneously.
Therefore, in order to make all displays in downstream, all can play the audio-video signal of being exported by signal source, the audio frequency and video form of signal source output it is necessary to provide a kind of processing method of new signal source output sound video signal format, so that can be supported by all displays in downstream.
Summary of the invention
In view of this audio-video signal form of signal source output, the invention provides a kind of processing method, device and system of audio frequency and video form, so that can be supported by all displays in downstream.
In order to solve, reach foregoing invention object, the present invention has adopted following technical scheme:
A processing method for audio frequency and video form, comprising:
Steps A, obtain the audio frequency and video form that each road display in signal source downstream is supported; Wherein, be positioned at the total n of the display road in signal source downstream, n >=2, n is integer; The audio frequency and video form that all each road displays in more described signal source downstream are supported, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support;
If there is the common audio frequency and video form of supporting in all each road displays in the described signal source of step B downstream, to memory, send the common audio frequency and video form of supporting of described all each road displays, so that the common audio frequency and video form of supporting of all each road displays described in memory stores, and then make signal source according to the common outside output sound video data of audio frequency and video form of supporting of described all each road displays.
More preferably, the audio frequency and video form that all each road displays in described signal source downstream are supported, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support, also comprise: if when all each road displays in described signal source downstream do not exist the audio frequency and video form of common support, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores, and then make described signal source according to the outside output sound video data of described default audio frequency and video form.
More preferably, described in obtain the audio frequency and video form that each road display in signal source downstream is supported, specifically comprise:
A1, obtain the EDID of each the road display that is arranged on signal source downstream, in the described EDID of every road display, comprise the audio frequency and video form that this road display is supported;
Whether the EDID data of described each road display that A2, judgement get are effective, if, according to HDMI/CEA/VESA consensus standard, resolve the EDID data of described each road display, the audio frequency and video form of supporting to obtain each road display in signal source downstream.
More preferably, whether the EDID data of described each road display that described judgement gets are effective, are specially: judge whether normal the verification of EDID data communicates by letter with and judgement whether correct with sign head.
More preferably, described steps A specifically comprises:
A, obtain the audio frequency and video form that the i road display in signal source downstream is supported, wherein, 1≤i≤n, i is integer;
B, the audio frequency and video form of described i road display support is kept in preset group;
C, obtain the audio frequency and video form that the k road display in signal source downstream is supported, wherein, 2≤k≤n, k is integer, k ≠ i;
The audio frequency and video form that audio frequency and video form in d, more described preset group and k road display are supported, to judge whether the audio frequency and video form in described preset group exists identical audio frequency and video form with the audio frequency and video form of k road display support, if the audio frequency and video form in described preset group exists identical audio frequency and video form with the audio frequency and video form of k road display support, described identical audio frequency and video form is replaced and is kept at the audio frequency and video form in described preset group;
E, circulation execution step c and steps d, until the audio frequency and video form of all each road display supports and the audio frequency and video form in described preset group execute described steps d.
A processing unit for audio frequency and video form, comprising:
Acquiring unit, the audio frequency and video form of supporting for obtaining each road display in signal source downstream; Wherein, be positioned at the total n of the display road in signal source downstream, n >=2, n is integer;
Comparing unit, the audio frequency and video form of supporting for all each road displays in more described signal source downstream, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support;
The first transmitting element, if during the audio frequency and video form of jointly supporting for all each road displays existence in described signal source downstream, to memory, send the common audio frequency and video form of supporting of described all each road displays, so that the common audio frequency and video form of supporting of all each road displays described in memory stores, and then make signal source according to the common outside output sound video data of audio frequency and video form of supporting of described all each road displays.
More preferably, also comprise:
The second transmitting element, if while there is not the audio frequency and video form of common support for all each road displays in described signal source downstream, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores, and then make described signal source according to the outside output sound video data of described default audio frequency and video form.
More preferably, described acquiring unit specifically comprises:
First obtains subelement, for obtaining the EDID of each the road display that is arranged on signal source downstream, comprises the audio frequency and video form that this road display is supported in the described EDID of every road display;
Judging unit, whether effective for judging the EDID data of described each the road display getting;
Resolution unit, for when EDID data are effective, resolves the EDID data of described each road display according to HDMI/CEA/VESA consensus standard, the audio frequency and video form of supporting to obtain each road display in signal source downstream.
More preferably, described judging unit comprises verification for the judging EDID data subelement of whether normally communicate by letter with and judgement whether correct with sign head.
A treatment system for audio, video data, comprising: signal source, single-chip microcomputer, DDC switch, memory, n road display, wherein, and n >=2, n is integer;
Wherein, described signal source connects described memory, and described single-chip microcomputer connects described memory, and described single-chip microcomputer connects described DDC switch, and described DDC switch can only connect display described in a road at synchronization;
Described single-chip microcomputer is used for controlling described DDC switch so that described DDC switch can only connect a road display at synchronization, the audio frequency and video form of supporting to obtain each road display in signal source downstream; The audio frequency and video form that all each road displays in more described signal source downstream are supported, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support; If all each road displays in described signal source downstream exist the common audio frequency and video form of supporting, the common audio frequency and video form of supporting of described all each road displays is stored in described memory;
The audio frequency and video form outside output sound video data of described signal source for jointly supporting according to described all each road displays of described memory stores.
More preferably, when described single-chip microcomputer does not also exist the audio frequency and video form of common support for all each road displays when described signal source downstream, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores;
Described signal source is also for according to the outside output sound video data of described default audio frequency and video form of described memory stores.
More preferably, described treatment system also comprises: DDC switch, and described DDC switch is arranged between described signal source and described memory, and described single-chip microcomputer is also for controlling the unlatching of DDC switch.
More preferably, described memory is integrated in described single-chip microcomputer inside.
More preferably, described memory and described single-chip microcomputer are separate entity apparatus.
More preferably, described memory is EEPROM.
More preferably, between described signal source and described memory, by DDC, be connected, and/or, between described single-chip microcomputer and described DDC switch, by DDC, be connected, and/or, between described DDC switch and described display, by DDC, be connected.
More preferably, between described single-chip microcomputer and described memory, by IIC, be connected.
Compared to prior art, the present invention has following beneficial effect:
The processing method of audio frequency and video form provided by the invention, the audio frequency and video form of supporting by all each road displays in downstream, comparison signal source, to find the common audio frequency and video form of supporting of all each road displays, if there is the common audio frequency and video form of supporting in all each road displays, this common audio frequency and video form of supporting is stored, so that signal source is according to this common outside output sound video data of audio frequency and video form of supporting.Therefore, the processing method by audio frequency and video form provided by the invention can make the audio frequency and video form of signal source output be supported by all displays in downstream.
Because the form of the audio, video data of signal source output is the audio frequency and video form that all each road displays are all supported, so, when Ge road, signal source downstream display receives after the audio, video data of signal source output, all can this audio, video data of normal play.Thereby realized the object that all each road displays that are connected with signal source are play same audio-video signal simultaneously.And, can avoid the problem of some display because not supporting that audio frequency and video form can not played data.
Accompanying drawing explanation
In order to be expressly understood technical scheme of the present invention, the accompanying drawing of using during below by description embodiment carries out brief description.Apparently, these accompanying drawings are only part embodiment accompanying drawings of the present invention.Those of ordinary skills, not paying under the prerequisite of creative work, can also obtain other accompanying drawing.
Fig. 1 is the audio, video data Play System structural representation in the embodiment of the present invention;
Fig. 2 is the process flow schematic diagram of the audio frequency and video form that provides of the embodiment of the present invention one;
Fig. 3 is the process flow schematic diagram of the audio frequency and video form that provides of the embodiment of the present invention two;
Fig. 4 is the structural representation of the processing unit of the audio frequency and video form that provides of the embodiment of the present invention three;
Fig. 5 is the structural representation of the treatment system of the audio frequency and video form that provides of the embodiment of the present invention four;
Fig. 6 is the structural representation of the treatment system of the audio frequency and video form that provides of the embodiment of the present invention five.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
In order to make the audio frequency and video form of signal source output be supported by all each road displays in downstream, the embodiment of the present invention provides a kind of processing method of audio frequency and video form.Specifically referring to embodiment mono-.
Embodiment mono-
It should be noted that, the processing method of the audio frequency and video form that the embodiment of the present invention provides is applied to the Play System that signal source downstream is provided with Multiple DisPlay.The frame diagram of its Play System as shown in Figure 1, comprises signal source 01, distributor 02 and Multiple DisPlay 03.Wherein, between signal source 01 and distributor 02 and between distributor 02 and display 03, with HDMI/DVI wire rod, couple together.By distributor 02, by a signal replication of signal source 01 output, be a plurality of identical signals, for Multiple DisPlay, show simultaneously.
Referring to Fig. 2, Fig. 2 is the schematic flow sheet of the processing method of the audio frequency and video form that provides of the embodiment of the present invention one.The processing method of the audio frequency and video form that as shown in Figure 2, embodiment mono-provides comprises the following steps:
S21, obtain the audio frequency and video form that each road display in signal source downstream is supported:
As mentioned above, in the embodiment of the present invention, signal source downstream comprises Multiple DisPlay.For convenience, downstream, setting signal source comprises n road display, wherein, n >=2, n is integer.
It should be noted that, in embodiments of the present invention, first audio frequency and video format analysis processing device obtains the audio frequency and video form of each road display support in signal source downstream.That is to say, in this step, audio frequency and video format analysis processing device obtains the audio frequency and video form that n road display is supported.It is pointed out that in embodiments of the present invention, preferably audio frequency and video format analysis processing device obtains the audio frequency and video form that each road display is supported successively, but not obtains the audio frequency and video form that all each road displays are supported simultaneously.Audio frequency and video format analysis processing device is realized and is obtained successively the audio frequency and video form that each road display is supported by DDC (Display Data Channel, DDC) switch.Particularly, at audio frequency and video format analysis processing device, get after the audio frequency and video form of a road display support, audio frequency and video format analysis processing device is controlled on the display of DDC switch Cong Gai road and is disconnected, and control DDC switch and be connected on an other road display, the audio frequency and video form of supporting to obtain this road display.Circulation successively, until get the audio frequency and video form that all each road displays are supported.
Due in display, the audio frequency and video form of support is a kind of of display identification information.The audio frequency and video form of supporting in order to obtain display, can also realize by obtaining the EDID (expanded scope identification data) of each road display.
It should be noted that, every display has the EDID of oneself, and these EDID are generally stored in the EEPROM of display, is changeless, represents the identification information of display.Described EDID generally comprises the audio frequency and video form of manufacturer, date of manufacture, support.In embodiments of the present invention, each EDID comprises the audio frequency and video form that this display is supported.
When obtaining the audio frequency and video lattice that each road display in signal source downstream supports by obtaining EDID data, its concrete steps are as follows:
S211, obtain the EDID of each road display in signal source downstream.
Whether the data of the EDID of each road display that S212, judgement get are effective, if so, and execution step S213:
Particularly, by judging whether DDC communication normal, the verification of the data of EDID and whether correctly judge that with the sign head of the data of EDID whether the EDID of each road display effective.If DDC communication is normal, and the sign head of the verification of EDID data and correct and EDID data is also correct, and the data of the EDID that explanation gets are effective, execution step S213, otherwise, process ends.
It should be noted that, EDID data Shi Yikuaiwei unit is calculated.All data in each piece (128 byte) are added, obtain and be 256 multiple.Therefore, by checking all data sums in each piece can judge that whether EDID data are effective.
S213, according to HDMI/CEA/VESA consensus standard, resolve the EDID data of described each road display, the audio frequency and video form of supporting to obtain each road display in signal source downstream:
Owing to including the audio frequency and video form of display support in each EDID data, so, by the EDID data that parse, can get the audio frequency and video form of each road display support in signal source downstream.
The audio frequency and video form that all each road displays in S22, more described signal source downstream are supported, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support:
Because the audio frequency and video form that each road display is supported may be different, for the type of audio frequency and video form and the quantity of the common audio frequency and video form of supporting that judges whether all various audio frequency and video forms that obtain exist the common audio frequency and video form of supporting of all each road displays and determine common support, need the audio frequency and video form of all each road displays supports in more described signal source downstream.
The audio frequency and video form of Jiang Mei road display support is considered as a set, by by the audio frequency and video form phase of all each road display supports with seek common ground, if occured simultaneously, be empty, there is the audio frequency and video form of common support in explanation, otherwise, there is not the audio frequency and video form of common support.
If there is the common audio frequency and video form of supporting in all each road displays in described signal source downstream, execution step S23, if there is not the audio frequency and video form of common support in all each road displays in described signal source downstream, execution step S24.
S23, the audio frequency and video form of jointly supporting to all each road displays of memory transmission, so that the common audio frequency and video form of supporting of all each road displays described in memory stores, and then make signal source according to the common outside output sound video data of audio frequency and video form of supporting of described all each road displays.
S24, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores, and then make described signal source according to the outside output sound video data of described default audio frequency and video form:
It should be noted that, described default audio frequency and video form is the audio frequency and video form that all each road displays in signal source downstream are all supported.Further preferably, this default audio frequency and video form is the conventional support form in this area.The conventional support form in this this area can be supported by the display of 80% left and right in the market.
The processing method of the audio frequency and video form providing for the embodiment of the present invention one above.By the processing method of audio frequency and video form described above, when there is the common audio frequency and video form of supporting in all each road displays in signal source downstream, signal source is according to this common outside output sound video data of audio frequency and video form of supporting, thereby can realize the audio, video data of all each road displays play signal source output simultaneously in downstream, and there will not be the phenomenon that partial display device can not playing audio-video data, thereby the defect of some display of having avoided signal source downstream in prior art because not supporting that audio frequency and video form can not played data.
In the processing method of the audio frequency and video form described in embodiment mono-, after getting the audio frequency and video form of all each road displays supports, again the audio frequency and video form of all each road display supports is compared together, thereby judge whether all each road displays exist the audio frequency and video form of common support.This mode needs the processing unit of audio frequency and video form to have larger data-handling capacity, and needs larger memory space, causes processing cost higher.In order to reduce the requirement to the data-handling capacity of the processing unit of audio frequency and video form and memory space, the present invention also provides the processing method of another audio frequency and video form, specifically referring to embodiment bis-.
Embodiment bis-
The processing method of the audio frequency and video form described in embodiment bis-is after getting the audio frequency and video form of two-way display, just to compare to obtain the common audio frequency and video form of supporting of this two-way display, and then obtain the audio frequency and video form of an other road display, the common audio frequency and video form of supporting of above-mentioned two-way and the audio frequency and video form of the display newly obtaining are relatively obtained to the common audio frequency and video form of supporting of three road displays, so circulation, until get the common audio frequency and video form of supporting of all each road displays.
For convenience, in embodiments of the present invention, n road display is defined as respectively to the 1st road display, the 2nd road display ..., i road display ..., n road display.
As example, the display that setting is positioned at signal source downstream has 3 tunnels.The processing method of the audio frequency and video form described in embodiment bis-is specifically referring to Fig. 3.The processing method of the audio frequency and video form that as shown in Figure 3, embodiment bis-provides comprises the following steps:
S31, obtain the audio frequency and video form that the 1st road display in signal source downstream is supported:
The method that step S31 and step S21 in embodiment mono-obtain the audio frequency and video form that a road display supports is identical, for the sake of brevity, and specifically referring to the description of embodiment mono-.
S32, the audio frequency and video form of described the 1st road display support is kept in preset group.
S33, obtain the audio frequency and video form that the 2nd road display in signal source downstream is supported:
Particularly, the processing unit of audio frequency and video form is controlled DDC switch and is disconnected from the 1st road display, and is connected on the 2nd road display, obtains the audio frequency and video form that the 2nd road display is supported.
The audio frequency and video form that audio frequency and video form in S34, more described preset group and the 2nd road display are supported, to judge whether the audio frequency and video form of audio frequency and video form in preset group and the 2nd road display support exists the audio frequency and video form of common support:
Particularly, the audio frequency and video form that relatively the 1st road display and the 2nd road display are supported, to judge the audio frequency and video form that whether has common support between two-way display.If there is the common audio frequency and video form of supporting between two-way display, execution step S35.If there is not the audio frequency and video form of common support between two-way display, execution step S310.
S35, the audio frequency and video form of described common support is replaced and is kept at the audio frequency and video form that the 1st road display in described preset group is supported:
The audio frequency and video form that was originally kept at the 1st road display support in preset group is replaced in the 1st road obtaining in step S34 and the common audio frequency and video form of supporting of the 2nd road display.
S36, obtain the audio frequency and video form that the 3rd road display is supported:
It is identical that this step and step S21 in embodiment mono-obtain the audio frequency and video form that a road display supports, for the sake of brevity, at this, is not described in detail, and specifically refers to the description of embodiment mono-.
The audio frequency and video form that audio frequency and video form in S37, more described preset group and the 3rd road display are supported, to judge whether the audio frequency and video form of audio frequency and video form in preset group and the 3rd road display support exists the audio frequency and video form of common support, if the audio frequency and video form that the audio frequency and video form in described preset group and the 3rd road display are supported exists the common audio frequency and video form of supporting, perform step S38.If there is not the audio frequency and video form of common support in the audio frequency and video form of the audio frequency and video form in described preset group and the 3rd road display support, execution step S310.
The audio frequency and video form of S38, common support that step S37 is obtained is replaced the audio frequency and video form in described preset group, to obtain the common audio frequency and video form of supporting of all each road displays.
It should be noted that, after execution of step S38, just got the common audio frequency and video form of supporting of all 3 road displays.
S39, the audio frequency and video form of jointly supporting to all each road displays of memory transmission, so that the common audio frequency and video form of supporting of all each road displays of described memory stores, and then make signal source according to the common outside output sound video data of audio frequency and video form of supporting of described all each road displays.
S310, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores, and then make signal source according to the outside output sound video data of described default audio frequency and video form.
It is more than the processing method of the audio frequency and video form described in embodiment bis-.This processing method is after getting the audio frequency and video form of two-way display support, just compare and obtain the audio frequency and video form whether two-way display exists common support, and then obtain the audio frequency and video form that an other road display is supported, and then with the common audio frequency and video form of supporting of the common audio frequency and video phase Yu Qiu tri-road displays of supporting of previous two-way, the like, until get the common audio frequency and video form of supporting of all each road displays.This by the processing method of the audio frequency and video form that repeatedly relatively each road display is supported, due to the audio frequency and video form that only needs storage two-way display to support simultaneously, or the audio frequency and video form that the audio frequency and video form He Yi road display of the common support that storage has drawn is supported, compared to embodiment mono-, the processing method that this embodiment provides, without larger disposal ability and memory space, has reduced hardware cost.
In addition, it should be noted that, as example, in embodiment bis-, only show the situation that comprises 3 road displays.In fact, as embodiments of the invention, signal source downstream can comprise more than 3 road displays.For example comprise 10 tunnels, 100 tunnels etc.When signal source downstream comprises more than 3 road display, in order to obtain the common audio frequency and video form of supporting of all each road displays, circulation execution step S36 to S38.
In addition, in above-described embodiment two, first obtain the audio frequency and video form that the 1st road display is supported, then obtain the audio frequency and video form that the 2nd road display is supported, finally obtain the audio frequency and video form that the 3rd road display is supported.In fact, the present embodiment does not limit first obtaining the audio frequency and video form of which display support, as long as finally can get the common audio frequency and video form of supporting of all each road displays.
The processing method of the audio frequency and video form providing based on embodiment mono-and embodiment bis-, the embodiment of the present invention also provides a kind of processing unit of audio frequency and video form.Specifically referring to embodiment tri-.
Embodiment tri-
Referring to Fig. 4, Fig. 4 is the structural representation of the processing unit of the audio frequency and video form that provides of the embodiment of the present invention three.As shown in Figure 4, the processing unit of this audio frequency and video form comprises:
Acquiring unit 41, the audio frequency and video form of supporting for obtaining each road display in signal source downstream; Wherein, be positioned at the total n of the display road in signal source downstream, n >=2, n is integer;
Comparing unit 42, the audio frequency and video form of supporting for all each road displays in more described signal source downstream, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support;
The first transmitting element 43, if during the audio frequency and video form of jointly supporting for all each road displays existence in described signal source downstream, to memory, send the common audio frequency and video form of supporting of described all each road displays, so that the common audio frequency and video form of supporting of all each road displays described in memory stores, and then make signal source according to the common outside output sound video data of audio frequency and video form of supporting of described all each road displays.
The processing unit of the audio frequency and video form providing by embodiment tri-, if while there is the common audio frequency and video form of supporting in all each road displays, the outside output sound video data of audio frequency and video form that signal source can be supported jointly according to this, thereby can make all energy normal play audio, video datas of Ge road, downstream display.
In order to realize when all each road displays do not exist the audio frequency and video form of common support, also can make all energy normal play audio, video datas of Ge road, downstream display, the processing unit of audio frequency and video form described above can also comprise:
The second transmitting element 44, if while there is not the audio frequency and video form of common support for all each road displays in described signal source downstream, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores, and then make described signal source according to the outside output sound video data of described default audio frequency and video form.
As a specific embodiment of the present invention, acquiring unit 41 described above can comprise following subelement:
First obtains subelement 411, for obtaining the EDID of each the road display that is arranged on signal source downstream, comprises the audio frequency and video form that this road display is supported in the described EDID of every road display;
Judging unit 412, whether effective for judging the EDID data of described each the road display getting;
Resolution unit 413, for when EDID data are effective, resolves the EDID data of described each road display according to HDMI/CEA/VESA consensus standard, the audio frequency and video form of supporting to obtain each road display in signal source downstream.
Wherein, judging unit 412 also comprises for judging the verification of EDID data and the subelement whether correct with sign head.Thereby realize by judging the verification of EDID data and and indicating that head judges that whether EDID data are effective.
The processing method of the audio frequency and video form providing based on above-described embodiment one and embodiment bis-, the embodiment of the present invention also provides a kind for the treatment of system of audio frequency and video form.Specifically referring to embodiment tetra-.
Embodiment tetra-
The treatment system of the audio frequency and video form that as shown in Figure 5, the embodiment of the present invention four provides comprises:
Signal source 51, single-chip microcomputer 52, DDC switch 53, memory 54, n road display 55, wherein, n >=2, n is integer;
Wherein, described signal source 51 connects described memory 54, and described single-chip microcomputer 52 connects described memory 54, and described single-chip microcomputer 52 connects described DDC switch 53, and described DDC switch 53 can only connect a road display 55 at synchronization.
More particularly, between single-chip microcomputer 52 and DDC switch 53, by DDC passage, be connected, between DDC switch 53Yu Ge road display 55, also by DDC passage, connect, so single-chip microcomputer 52 can obtain the audio frequency and video form that each road display is supported by DDC passage, can save like this input/output interface of single-chip microcomputer 52.Described DDC passage makes to follow two lines of IIC communication protocol.Single-chip microcomputer 52 is connected on the DDC passage being connected with memory 54 by IIC.
In addition between signal source 51 and memory 54, by DDC passage, connect.Between single-chip microcomputer 52 and memory 54, by IIC, be connected.
In embodiments of the present invention, signal source 51 is player, and as example, the signal source 51 described in the embodiment of the present invention can be DVD player, VCD machine.Display 55 can be TV, computer monitor etc.
Described single-chip microcomputer 52 is microprocessing units, its for controlling described DDC switch 53 so that described DDC switch 53 can only connect a road display at synchronization, the audio frequency and video form of supporting to obtain each road display 55 in signal source downstream; The audio frequency and video form that all each road displays 55 in more described signal source 51 downstreams are supported, to judge whether all each road displays 55 in described signal source 51 downstreams exist the audio frequency and video form of common support; If there is the common audio frequency and video form of supporting in all each road displays 55 in described signal source downstream, to memory 54, send the common audio frequency and video form of supporting of all each road displays, so that the common audio frequency and video form of supporting of all each road displays of described memory 54 storage.
In embodiments of the present invention, memory 54 can be separate entity with single-chip microcomputer 52, also memory 54 can be integrated in to the inside of single-chip microcomputer 52.In embodiments of the present invention, memory 54 can be the memory of any type well known to those skilled in the art.Preferably adopt EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable read-only memory), this is because the information being stored in EEPROM can be permanently stored in EEPROM, can not cause the loss of information after power-off.
When needs playing audio-video data, signal source 51 gets the common audio frequency and video form of supporting of all each road displays from memory 54, according to the common outside output sound video data of audio frequency and video form of supporting of these all each road displays.Because the audio, video data of signal source output can be supported by all each road displays, so all each road displays are the audio, video data of energy play signal source output all, the phenomenon that there will not be blank screen or do not show.
When all each road displays 55 in signal source 51 downstreams do not exist the audio frequency and video form of common support, described single-chip microcomputer is also for sending default audio frequency and video form to memory 54, so that the described default audio frequency and video form of memory 54 storage.In this case, when needs playing audio-video data, signal source 51 gets default audio frequency and video form from memory 54, according to the outside output sound video data of this default audio frequency and video form.Because the audio, video data of signal source output can be supported by all each road displays, so all each road displays are the audio, video data of energy play signal source output all, the phenomenon that there will not be blank screen or do not show.
In the treatment system of the audio frequency and video form that above-described embodiment four provides, between signal source 51 and memory 54, directly by DDC passage, be connected.When single-chip microcomputer 52 sends in the process of the common audio frequency and video form of supporting of all each road displays or default audio frequency and video form to memory 54, due between signal source 51 and memory 54, be connected, so single-chip microcomputer 52 has also sent common audio frequency and video form or the default audio frequency and video form of supporting of all each road displays to signal source 51.But in the treatment system of audio frequency and video form, downstream can not upstream send data on one's own initiative, otherwise likely occurs system entanglement.So for entanglement appears in anti-locking system, the embodiment of the present invention also provides embodiment five.
Embodiment five
The treatment system of the audio frequency and video form described in embodiment five and the treatment system of the audio frequency and video form described in embodiment tetra-have many similarities, for the sake of brevity, the embodiment of the present invention five only focuses on to describe to its difference, and its something in common refers to the description of embodiment tetra-.
Referring to Fig. 6, Fig. 6 is the structural representation of the treatment system of the audio frequency and video form described in the embodiment of the present invention five.Compared to the treatment system of the audio frequency and video form shown in Fig. 5, the treatment system of the audio frequency and video form shown in Fig. 6 has been set up DDC switch 66 between signal source 61 and memory 64.The unlatching of this DDC switch 66 is controlled by single-chip microcomputer 62, and in other words, single-chip microcomputer 62 is controlled the unlatching of DDC switch 66.When single-chip microcomputer 62 sends all each road display 65 common audio frequency and video forms of supporting or default audio frequency and video form to memory 64, single-chip microcomputer 62 is controlled DDC switch 66 and is disconnected, and makes not to be communicated with between described signal source 61 and memory 64.When wanting playing audio-video data, single-chip microcomputer 62 is controlled DDC switch 66 closures, make to be communicated with between signal source 61 and memory 64, thereby make signal source 61 get common audio frequency and video form or the default audio frequency and video form of supporting of all each road displays from memory 64, and then according to common audio frequency and video form or the outside output sound video data of default audio frequency and video form of supporting of these all each road displays.
The treatment system of the audio frequency and video form described in embodiment five, except the beneficial effect of the treatment system of the audio frequency and video form described in having embodiment tetra-, can also avoid the entanglement for the treatment of system, reduces the risk of makeing mistakes, and has improved the stability of playing audio-video data.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction.
Although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention.Any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention,, all still belongs in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present invention.
Claims (17)
1. a processing method for audio frequency and video form, is characterized in that, comprising:
Steps A, obtain the audio frequency and video form that each road display in signal source downstream is supported; Wherein, be positioned at the total n of the display road in signal source downstream, n >=2, n is integer; The audio frequency and video form that all each road displays in more described signal source downstream are supported, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support;
If there is the common audio frequency and video form of supporting in all each road displays in the described signal source of step B downstream, to memory, send the common audio frequency and video form of supporting of described all each road displays, so that the common audio frequency and video form of supporting of all each road displays described in memory stores, and then make signal source according to the common outside output sound video data of audio frequency and video form of supporting of described all each road displays.
2. processing method according to claim 1, it is characterized in that, the audio frequency and video form that all each road displays in described signal source downstream are supported, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support, also comprise: if when all each road displays in described signal source downstream do not exist the audio frequency and video form of common support, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores, and then make described signal source according to the outside output sound video data of described default audio frequency and video form.
3. processing method according to claim 1 and 2, is characterized in that, described in obtain the audio frequency and video form that each road display in signal source downstream is supported, specifically comprise:
A1, obtain the EDID of each the road display that is arranged on signal source downstream, in the described EDID of every road display, comprise the audio frequency and video form that this road display is supported;
Whether the EDID data of described each road display that A2, judgement get are effective, if, according to HDMI/CEA/VESA consensus standard, resolve the EDID data of described each road display, the audio frequency and video form of supporting to obtain each road display in signal source downstream.
4. processing method according to claim 3, is characterized in that, whether the EDID data of described each road display that described judgement gets are effective, are specially: judge whether normal the verification of EDID data communicates by letter with and judgement whether correct with sign head.
5. processing method according to claim 1, is characterized in that, described steps A specifically comprises:
A, obtain the audio frequency and video form that the i road display in signal source downstream is supported, wherein, 1≤i≤n, i is integer;
B, the audio frequency and video form of described i road display support is kept in preset group;
C, obtain the audio frequency and video form that the k road display in signal source downstream is supported, wherein, 2≤k≤n, k is integer, k ≠ i;
The audio frequency and video form that audio frequency and video form in d, more described preset group and k road display are supported, to judge whether the audio frequency and video form in described preset group exists identical audio frequency and video form with the audio frequency and video form of k road display support, if the audio frequency and video form in described preset group exists identical audio frequency and video form with the audio frequency and video form of k road display support, described identical audio frequency and video form is replaced and is kept at the audio frequency and video form in described preset group;
E, circulation execution step c and steps d, until the audio frequency and video form of all each road display supports and the audio frequency and video form in described preset group execute described steps d.
6. a processing unit for audio frequency and video form, is characterized in that, comprising:
Acquiring unit, the audio frequency and video form of supporting for obtaining each road display in signal source downstream; Wherein, be positioned at the total n of the display road in signal source downstream, n >=2, n is integer;
Comparing unit, the audio frequency and video form of supporting for all each road displays in more described signal source downstream, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support;
The first transmitting element, if during the audio frequency and video form of jointly supporting for all each road displays existence in described signal source downstream, to memory, send the common audio frequency and video form of supporting of described all each road displays, so that the common audio frequency and video form of supporting of all each road displays described in memory stores, and then make signal source according to the common outside output sound video data of audio frequency and video form of supporting of described all each road displays.
7. processing unit according to claim 6, is characterized in that, also comprises:
The second transmitting element, if while there is not the audio frequency and video form of common support for all each road displays in described signal source downstream, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores, and then make described signal source according to the outside output sound video data of described default audio frequency and video form.
8. according to the processing unit described in claim 6 or 7, it is characterized in that, described acquiring unit specifically comprises:
First obtains subelement, for obtaining the EDID of each the road display that is arranged on signal source downstream, comprises the audio frequency and video form that this road display is supported in the described EDID of every road display;
Judging unit, whether effective for judging the EDID data of described each the road display getting;
Resolution unit, for when EDID data are effective, resolves the EDID data of described each road display according to HDMI/CEA/VESA consensus standard, the audio frequency and video form of supporting to obtain each road display in signal source downstream.
9. processing unit according to claim 8, is characterized in that, described judging unit comprises the subelement of whether normally communicate by letter with and judgement whether correct with sign head of the verification for judging EDID data.
10. a treatment system for audio, video data, is characterized in that, comprising: signal source, single-chip microcomputer, DDC switch, memory, n road display, wherein, and n >=2, n is integer;
Wherein, described signal source connects described memory, and described single-chip microcomputer connects described memory, and described single-chip microcomputer connects described DDC switch, and described DDC switch can only connect display described in a road at synchronization;
Described single-chip microcomputer is used for controlling described DDC switch so that described DDC switch can only connect a road display at synchronization, the audio frequency and video form of supporting to obtain each road display in signal source downstream; The audio frequency and video form that all each road displays in more described signal source downstream are supported, to judge whether all each road displays in described signal source downstream exist the audio frequency and video form of common support; If all each road displays in described signal source downstream exist the common audio frequency and video form of supporting, the common audio frequency and video form of supporting of described all each road displays is stored in described memory;
The audio frequency and video form outside output sound video data of described signal source for jointly supporting according to described all each road displays of described memory stores.
11. treatment systems according to claim 10, it is characterized in that, while also there is not the audio frequency and video form of common support for all each road displays when described signal source downstream in described single-chip microcomputer, to memory, send default audio frequency and video form, so that default audio frequency and video form described in described memory stores;
Described signal source is also for according to the outside output sound video data of described default audio frequency and video form of described memory stores.
12. according to the treatment system described in claim 10 or 11, it is characterized in that, described treatment system also comprises: DDC switch, and described DDC switch is arranged between described signal source and described memory, and described single-chip microcomputer is also for controlling the unlatching of DDC switch.
13. according to the treatment system described in claim 10 or 11, it is characterized in that, it is inner that described memory is integrated in described single-chip microcomputer.
14. according to the treatment system described in claim 10 or 11, it is characterized in that, described memory and described single-chip microcomputer are separate entity apparatus.
15. according to the treatment system described in claim 10 or 11, it is characterized in that, described memory is EEPROM.
16. according to the treatment system described in claim 10 or 11, it is characterized in that, between described signal source and described memory, by DDC, be connected, and/or, between described single-chip microcomputer and described DDC switch, by DDC, be connected, and/or, between described DDC switch and described display, by DDC, be connected.
17. according to the treatment system described in claim 10 or 11, it is characterized in that, between described single-chip microcomputer and described memory, by IIC, is connected.
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