CN101521781A - Method for setting HDMI audio format - Google Patents
Method for setting HDMI audio format Download PDFInfo
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- CN101521781A CN101521781A CN200910106324A CN200910106324A CN101521781A CN 101521781 A CN101521781 A CN 101521781A CN 200910106324 A CN200910106324 A CN 200910106324A CN 200910106324 A CN200910106324 A CN 200910106324A CN 101521781 A CN101521781 A CN 101521781A
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Abstract
The invention provides a method for setting an HDMI audio format, belonging to the technical field of audio technologies. The method comprises the following steps: a. obtaining the information of an audio format supported by HDMI receiving equipment or a Repeater by HDMI output equipment through an HDMI connecting wire; b. judging if the audio format supported by the HDMI receiving equipment or the Repeater is the same as an audio format supported by the HDMI output equipment, if the audio format supported by the HDMI receiving equipment or the Repeater is the same as the audio format supported by the HDMI output equipment, carrying out a step c, and otherwise carrying out a step d; c. setting the own audio format as All by the HDMI output equipment; and d. setting the own audio format as PCM by the HDMI output equipment. The invention has the advantages that the method enables the HDMI audio output to be intelligently, simply and rapidly set, enables HDMI to really plug and play, users can normally use the HDMI by only accurately connecting the HDMI connecting wire, and all sets can be automatically accomplished, thereby preventing the complexity of HDMI audio set for users and providing great convenience for the users.
Description
Technical field
The invention belongs to the Audiotechnica field, relate in particular to the method that a kind of HDMI (High DefinitionMultimedia, HDMI (High Definition Multimedia Interface)) audio format is provided with.
Background technology
HDMI is the standard that is exclusively used in digital video/audio transmission that HDMI organizes to set up.The HDMI interface can transmit audio signal and the high definition video signal that does not have compression in a transmission cable, with respect to SPDIF (SonyPhilips Digital Interface, the abbreviation of Sony/Philips digital audio interface) connects, HDMI has bigger bandwidth, can allow it support up-to-date free of losses audio format, these forms can't connect by SPDIF to be supported, because the data rate that they require is very high, has surpassed the ability of SPDIF.
Because HDMI supports the digital audio/video transmission, can bring high-quality seeing and hearing enjoyment to users, so HDMI more and more is subjected to users' favor.The application of HDMI technology in consumer electronics product in recent years more and more widely, various HDMI Source (HDMI output equipments, the audio frequency and video output equipment such as DVD-Player (DVD player), STB (set-top box), BD (blue-ray DVD) and the HDMI receiving equipment (audio ﹠ video equipment of band HDMI interface is as receiving the TV of HDMI signal) that refer to band HDMI function more and more enter in users' the family.
After the HDMI output equipment passes through the HDMI connecting line and the HDMI receiving equipment is connected, perhaps the HDMI output equipment connects Repeater (transducer by the HDMI connecting line, possess equipment of HDMI input/output function etc. as power amplifier or other) again with after the HDMI receiving equipment is connected, the user need manually carry out the output of HDMI audio frequency and be provided with, otherwise the situation of voiceless sound output may occur.
The HDMI output equipment generally provides two kinds of HDMI Audio (HDMI audio frequency) output mode: PCM and All.When being arranged to PCM, the HDMI output equipment is at first to the Audio decoding, and by the output of PCM form, because most HDMI receiving equipments are all supported the PCM form, this mode can guarantee the normal output of sound, but can lose sound effect greatly then; When being arranged to All, the HDMI output equipment is not done any processing to Audio, directly output, and the advantage of this set is the voice output effect that can guarantee the best, reduces best auditory effect.If HDMI receiving equipment or Repeater support HDMI output equipment Audio Format (audio format), audio output format that then can the HDMI output equipment is set to ALL, otherwise will voiceless sound output.
Specifically, there are several application scenarioss:
If 1 HDMI output equipment directly is connected by the HDMI connecting line with the HDMI receiving equipment, and the HDMI receiving equipment do not support the audio format of HDMI output equipment, and audio frequency output that need the HDMI output equipment is set to PCM.
Audio format as the support of HDMI output equipment is Dolby or DTS, the HDMI receiving equipment is TV, when both directly connect by the HDMI connecting line, because existing TV can only support the pcm audio form, so the output of audio frequency that need the HDMI output equipment is set to PCM, could guarantee that sound normally exports;
If 2 HDMI output equipments are connected with the HDMI receiving equipment by Repeater, though the HDMI receiving equipment is not supported the audio format of HDMI output equipment, Repeater supports, audio frequency output that then can the HDMI output equipment is set to ALL.
Audio format as the support of HDMI output equipment is Dolby or DTS, be connected with the HDMI receiving equipment by Repeater, as power amplifier, and Repeater supports Dolby or DTS form, in order to guarantee the best auditory effect of 5.1 sound channels, need the audio frequency output of HDMI output equipment to be set to ALL;
If 3 HDMI output equipments are connected with the HDMI receiving equipment by Repeater, Repeater does not support the audio format of HDMI output equipment, then needs the audio frequency output of HDMI output equipment to be set to PCM.
Audio format as the support of HDMI output equipment is MPEG, and Repeater does not support, also need the audio format of HDMI output equipment to be set to PCM in order to guarantee the normal output of sound this moment.
So the user is after connecting HDMI equipment, need at first understand the audio format that HDMI equipment is supported, output is provided with the audio format of supporting according to equipment to audio frequency then, but for ordinary consumer, to the understanding of HDMI but seldom, if the incorrect phenomenon that voiceless sound output will occur is set, the inconvenience that causes the user to use.
Therefore, need a kind of technical scheme, the audio frequency output that can finish HDMI equipment simply and easily is provided with.
Summary of the invention
The method that the object of the present invention is to provide a kind of HDMI audio format to be provided with is intended to solve the HDMI audio frequency apparatus the intelligent problem that is provided with is carried out in its audio frequency output.
The present invention is achieved in that the method that a kind of HDMI audio format is provided with, and described method comprises:
A, HDMI output equipment obtain the audio format information that HDMI receiving equipment or Repeater are supported by the HDMI connecting line;
B, described HDMI output equipment judge whether the audio format that HDMI receiving equipment or Repeater supported is identical with the audio format of self supporting, if change step c, otherwise change steps d;
C, its audio frequency output of described HDMI output equipment are set to ALL;
D, its audio frequency output of described HDMI output equipment are set to PCM.
Wherein comprise before the step a:
A0, described HDMI output equipment connect described HDMI receiving equipment or Repeater by the HDMI connecting line.
Wherein step a specifically comprises:
A1, described HDMI output equipment pass through the EDID of described HDMI receiving equipment of described HDMI connecting line reading matter or Repeater, analyze the audio format that described HDMI receiving equipment or Repeater are supported from the EDID that is read.
Described HDMI receiving equipment is a television set.
Described Repeater is a power amplifier, and the audio format of support is in following one or multinomial: Dolby, DTS, MPEG or WMA, or other any audio format.
Described HDMI output equipment is a certain in following: DVD player, set-top box or blue-ray DVD.
The audio format that described HDMI output equipment is supported is in following one or multinomial: Dolby, DTS, MPEG or WMA.
The present invention overcomes the deficiencies in the prior art, after the HDMI output equipment connects by HDMI connecting line and HDMI receiving equipment or Repeater, at first obtain the audio format information that HDMI receiving equipment or Repeater are supported by the HDMI connecting line, then according to the audio format of self supporting, in conjunction with the audio format information that HDMI receiving equipment or Repeater are supported, the output of the audio frequency of HDMI output equipment is set to PCM or ALL automatically.Technical scheme provided by the invention makes the setting of the HDMI audio frequency output intelligent simple that becomes, make HDMI really realize plug and play, the user only needs the connection of HDMI connecting line correctly just can normally be used, all settings all can be finished automatically, avoided the trouble of user, brought user's great convenience the HDMI audio setting.
Description of drawings
Fig. 1 is an embodiment of the invention flow chart.
Embodiment
Technical scheme provided by the invention is: after the HDMI output equipment connects by HDMI connecting line and HDMI receiving equipment or Repeater, at first obtain the audio format information that HDMI receiving equipment or Repeater are supported by the HDMI connecting line, then according to the audio format of self supporting, in conjunction with the audio format information that HDMI receiving equipment or Repeater are supported, the output of the audio frequency of HDMI output equipment is set to PCM or ALL automatically.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
After the HDMI output equipment connects by HDMI connecting line and HDMI receiving equipment or Repeater, can read EDID (the Extended Display Identification Data of HDMI receiving equipment or Repeater by the HDMI connecting line, the extending display identification data), from the EDID that is read, analyze the audio format that HDMI receiving equipment or Repeater are supported, the HDMI output equipment will be according to the audio format of self supporting then, in conjunction with the audio format that HDMI receiving equipment or Repeater are supported, its audio frequency output is set to PCM or ALL automatically.
Specifically, when the HDMI output equipment directly was connected by the HDMI connecting line with the HDMI receiving equipment, if the audio format that the HDMI output equipment is supported, the HDMI receiving equipment supported that also then the HDMI output equipment is set to ALL automatically with its audio frequency output; If the audio format that the HDMI output equipment is supported, HDMI receiving equipment do not support that then the HDMI output equipment is set to PCM automatically with its audio frequency output;
When connecting the HDMI receiving equipment again after HDMI output equipment and Repeater are connected by the HDM connecting line, if the audio format that the HDMI output equipment is supported, Repeater supports that also then the HDMI output equipment is set to ALL automatically with its audio frequency output; If the audio format that the HDMI output equipment is supported, Repeater do not support that then the HDMI output equipment is set to PCM automatically with its audio frequency output.
Below in conjunction with concrete application scenarios technical scheme provided by the invention is described:
If 1 HDMI output equipment directly is connected by the HDMI connecting line with the HDMI receiving equipment, and the HDMI receiving equipment do not support the audio format of HDMI output equipment, and then the HDMI output equipment is set to PCM automatically with its audio frequency output.
Audio format as the support of HDMI output equipment is Dolby or DTS, the HDMI receiving equipment is TV, when both directly connect by the HDMI connecting line, because existing TV can only support the pcm audio form, the HDMI output equipment reads the EDID of TV by the HDMI connecting line, obtaining the audio format that TV supports from EDID is PCM, then the HDMI output equipment automatically the output of its audio frequency be set to PCM, the HDMI output equipment is with Dolby or the DTS source of sound is decoded into PCM, be input to TV by the HDMI connecting line again, because TV can discern the PCM source of sound, TV has normal voice output;
In like manner, when the audio format of HDMI output equipment support was MPEG (Motion Picture Experts Group) or WMA (Windows Media Audio, a kind of audio format that mirosoftware is released), HDMI output equipment its audio frequency output automatically was set to PCM.
If 2 HDMI output equipments are connected with the HDMI receiving equipment by Repeater, though the HDMI receiving equipment is not supported the audio format of HDMI output equipment, Repeater supports, then the HDMI output equipment automatically its audio frequency output be set to ALL.
Audio format as the support of HDMI output equipment is Dolby (or DTS), be connected with the HDMI receiving equipment by Repeater (as power amplifier), the HDMI output equipment reads the EDID of Repeater by the HDMI connecting line, obtaining its audio format of supporting from EDID is Dolby (or DTS), then the HDMI output equipment automatically the output of its audio frequency be set to ALL, the HDMI output equipment will directly be given Repeater by the HDMI connecting line with Dolby or DTS audio frequency source code, Repeater decoding back output sound.
If 3 HDMI output equipments are connected with the HDMI receiving equipment by Repeater, Repeater does not support the audio format of HDMI output equipment, then the HDMI output equipment automatically the output of its audio frequency be set to PCM.
Audio format as the support of HDMI output equipment is MPEG (or WMA), the HDMI output equipment reads the EDID of Repeater by the HDMI connecting line, obtaining its audio format of supporting from EDID is Dolby (or DTS), this moment is in order to guarantee the normal output of sound, HDMI output equipment its audio frequency output automatically is set to PCM, the HDMI output equipment is decoded into PCM with MPEG (or WMA) source of sound, is input to Repeater by the HDMI connecting line again.
In the embodiment of the invention, above-mentioned application scenarios is applicable to initial connection the between HDMI output equipment and HDMI receiving equipment or the Repeater, also be applicable to the change of user to annexation, at first the HDMI output equipment directly is connected with the HDMI receiving equipment as the user, afterwards for obtaining the better sound effect, the HDMI output equipment changed into by power amplifier be connected, but no matter how connected mode changes, above-mentioned application scenarios is all applicable with the HDMI receiving equipment.
In the embodiment of the invention, the HDMI output equipment can be that DVD-Player, STB (set-top box) or BD or other can be exported the equipment of HDMI information source, Repeater can be that power amplifier or other can receive and the equipment of output with the HDMI signal, and the HDMI receiving equipment can be that TV or other receive the equipment of HDMI signal.
Embodiment of the invention flow chart specifically comprises following step as shown in Figure 1:
1, the HIDMI output equipment connects HDMI receiving equipment or Repeater by the HDMI connecting line;
2, the HDMI output equipment reads the EDID of HDMI receiving equipment or Repeater by the HDMI connecting line;
3, the HDMI output equipment is analyzed the audio format that HDMI receiving equipment or Repeater are supported according to the EDID that reads;
4, is the audio format supported of HDMI output equipment identical with the audio format that HDMI receiving equipment or Repeater are supported? if change step 5; Otherwise change step 6;
5, the HDMI output equipment automatically the output of its audio frequency be set to ALL.
6, the HDMI output equipment automatically the output of its audio frequency be set to PCM.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done 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 (7)
1, a kind of method of HDMI audio format setting, described method comprises:
A, HDMI output equipment obtain the audio format information that HDMI receiving equipment or Repeater are supported by the HDMI connecting line;
B, described HDMI output equipment judge whether the audio format that HDMI receiving equipment or Repeater supported is identical with the audio format of self supporting, if change step c, otherwise change steps d;
C, its audio frequency output of described HDMI output equipment are set to ALL;
D, its audio frequency output of described HDMI output equipment are set to PCM.
2, the method for claim 1 is characterized in that, wherein comprises before the step a:
A0, described HDMI output equipment connect described HDMI receiving equipment or Repeater by the HDMI connecting line.
3, the method for claim 1 is characterized in that, wherein step a specifically comprises:
A1, described HDMI output equipment pass through the EDID of described HDMI receiving equipment of described HDMI connecting line reading matter or Repeater, analyze the audio format that described HDMI receiving equipment or Repeater are supported from the EDID that is read.
4, the method for claim 1 is characterized in that, described HDMI receiving equipment is a television set.
5, the method for claim 1 is characterized in that, described Repeater is a power amplifier, and the audio format of support is in following one or multinomial: Dolby, DTS, MPEG or WMA, or other any audio format.
6, the method for claim 1 is characterized in that, described HDMI output equipment is a certain in following: DVD player, set-top box or blue-ray DVD.
7, the method for claim 1 is characterized in that, the audio format that described HDMI output equipment is supported is in following one or multinomial: Dolby, DTS, MPEG or WMA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106324A CN101521781A (en) | 2009-03-25 | 2009-03-25 | Method for setting HDMI audio format |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106324A CN101521781A (en) | 2009-03-25 | 2009-03-25 | Method for setting HDMI audio format |
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| CN101521781A true CN101521781A (en) | 2009-09-02 |
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| CN200910106324A Pending CN101521781A (en) | 2009-03-25 | 2009-03-25 | Method for setting HDMI audio format |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104063353A (en) * | 2014-07-08 | 2014-09-24 | 上海华勤通讯技术有限公司 | Information synchronization method for master device and slave device |
| CN105374358A (en) * | 2014-08-15 | 2016-03-02 | 中兴通讯股份有限公司 | Adaptive audio output method, adaptive audio output device, audio transmitting end and adaptive audio output system |
| WO2016202242A1 (en) * | 2015-06-17 | 2016-12-22 | 华为技术有限公司 | Arc control method, control unit, and display device |
| WO2017076246A1 (en) * | 2015-11-04 | 2017-05-11 | 深圳市中兴微电子技术有限公司 | Display parameter acquisition method, display device, terminal and storage medium |
| CN108141624A (en) * | 2015-10-13 | 2018-06-08 | 三星电子株式会社 | For the method and apparatus sent and received of multi-medium data |
| WO2020248699A1 (en) * | 2019-06-10 | 2020-12-17 | 海信视像科技股份有限公司 | Sound processing method and display apparatus |
-
2009
- 2009-03-25 CN CN200910106324A patent/CN101521781A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104063353A (en) * | 2014-07-08 | 2014-09-24 | 上海华勤通讯技术有限公司 | Information synchronization method for master device and slave device |
| CN104063353B (en) * | 2014-07-08 | 2019-01-04 | 华勤通讯技术有限公司 | The method of synchronizing information between master-slave equipment |
| CN105374358A (en) * | 2014-08-15 | 2016-03-02 | 中兴通讯股份有限公司 | Adaptive audio output method, adaptive audio output device, audio transmitting end and adaptive audio output system |
| WO2016202242A1 (en) * | 2015-06-17 | 2016-12-22 | 华为技术有限公司 | Arc control method, control unit, and display device |
| CN106331557A (en) * | 2015-06-17 | 2017-01-11 | 华为技术有限公司 | ARC control method, control unit and display device |
| CN106331557B (en) * | 2015-06-17 | 2019-06-21 | 华为技术有限公司 | ARC control method, control unit and display equipment |
| CN108141624A (en) * | 2015-10-13 | 2018-06-08 | 三星电子株式会社 | For the method and apparatus sent and received of multi-medium data |
| US10904610B2 (en) | 2015-10-13 | 2021-01-26 | Samsung Electronics Co., Ltd. | Method and apparatus for transmission and reception of multimedia data |
| WO2017076246A1 (en) * | 2015-11-04 | 2017-05-11 | 深圳市中兴微电子技术有限公司 | Display parameter acquisition method, display device, terminal and storage medium |
| WO2020248699A1 (en) * | 2019-06-10 | 2020-12-17 | 海信视像科技股份有限公司 | Sound processing method and display apparatus |
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Open date: 20090902 |