CN106162320B - Method for regulation of sound volume and device - Google Patents
Method for regulation of sound volume and device Download PDFInfo
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- CN106162320B CN106162320B CN201610597464.4A CN201610597464A CN106162320B CN 106162320 B CN106162320 B CN 106162320B CN 201610597464 A CN201610597464 A CN 201610597464A CN 106162320 B CN106162320 B CN 106162320B
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- switching
- television set
- signal strength
- power amplifier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
Abstract
The present invention provides a kind of method for regulation of sound volume and devices, this method comprises: in input signal switching, the signal strength inputted before monitoring switching to television set, and the signal strength inputted after switching to television set；According to the comparison result between the signal strength inputted after the signal strength and switching inputted before switching to television set to television set, the broadcasting gain of power amplifier outside ARC is adjusted, keeps the output volume of power amplifier outside the ARC of switching front and back consistent.Using the present invention, it can ensure in the case where television set, which is set as RAW output by HDMI ARC connection outside power amplifier and SPDIF output, causes television set that can not adjust sound amplitude, realize that output volume is consistent when channel or channel switch, overall output volume is neglected big or suddenly small when channel or channel being avoided to switch.
Description
Technical field
The present invention relates to TV technologies, specifically, the present invention relates to method for regulation of sound volume and devices.
Background technique
The sound of conventional television is issued by the loudspeaker of television set, but as user proposes television set requirement
Height, the loudspeaker of television set can no longer meet user to the demands such as the high tone quality of television sound, well arranged.Therefore practical
In, television set improves audio quality often through external power amplifier is connected.
HDMI (High-Definition Multimedia Interface, high-definition multimedia interface) is current shadow
The 4K that its display resolution is extended to movie theatre grade by the most basic interface configuration of sound playback equipment, the especially release of HDMI 1.4
X 2K (4096x 2160) joined ARC (Audio Return Channel, audio feedback channel), 3D support, Ethernet
The characteristics such as channel, more color spaces and new connector.Wherein, ARC can be improved as the featured function in the specification of HDMI 1.4
Audio quality has experienced more conveniences while allowing user to enjoy ultra high-definition audio-visual experience.
Believed for example, television set obtains box by HDMI connection set-top box or intelligent box by the input that HDMI is passed to
Number；Another side, the port HDMI on television set with ARC function are connect by HDMI with the port ARC of outside power amplifier, will be received
Signal return to external power amplifier.
It was found by the inventors of the present invention that as programme channel, television channel are more and more, in channel change or TV
It often will appear output volume when channel and neglect big or suddenly small problem.
For example, user passed through box by sound modulation it is smaller so that overall output volume to be in user comfortable
When in range, if television set is switched to other television channels at this time, TV overall output volume may become larger suddenly；Or
Person has passed through box in user and has modulated larger by sound so that overall output volume is in the comfortable range of user, this
Television set is switched to other television channels by Shi Ruo, and TV overall output sound may become smaller suddenly, causes user experience
Difference.
To solve the above-mentioned problems, existing television set usually all has AVC (Auto Volume Control, automatic sound
Amount control) function.The amplitude that television sound is adjusted by AVC method, the sound amplitude for exporting television set are consistent as far as possible.
For example, television set carries out preamplifier gain to input signal using for the pre-set yield value of current television channel institute
(PreGain) it handles, then, according still further to preset AVC threshold value, school is carried out to the volume of preamplifier gain treated signal
Standard, so that the volume of television set final output signal exports target value close to volume as far as possible.Wherein, AVC threshold value for characterize into
The scale of row volume scaling, and volume output target value (alternatively referred to as AVC threshold values) is defeated for characterizing the final institute of television set
Volume out.
But it was found by the inventors of the present invention that when passing through the external power amplifier of HDMI ARC connection and SPDIF (digital audio
Interface) output when being set as RAW (source code) output, not can solve whole when channel/television channel switches by existing AVC scheme
Body output volume neglects big or suddenly small problem.
Therefore, it is necessary to provide a kind of method for regulation of sound volume, can better solve overall output volume neglect it is big or suddenly small
The problem of.
Summary of the invention
In view of the above-mentioned drawbacks of the prior art, can be ensured the present invention provides a kind of method for regulation of sound volume and device
Being set as RAW output by HDMI ARC connection outside power amplifier and SPDIF output in television set causes television set that can not adjust sound
In the case where sound amplitude, realize that output volume is consistent when channel or channel switch, overall output when channel or channel being avoided to switch
Volume is neglected big or suddenly small.
Method for regulation of sound volume provided by the invention, comprising:
In input signal switching, the signal strength inputted before monitoring switching to television set, and to television set after switching
The signal strength of input；
According between the signal strength inputted after the signal strength and switching inputted before switching to television set to television set
Comparison result adjusts the broadcasting gain of power amplifier outside ARC, keeps the output volume of power amplifier outside the ARC of switching front and back consistent.
Preferably, the input signal switching includes: booting, the channel switching of input signal or the channel of input signal
Switching.
Preferably, booting when, before the switching to television set input signal strength be specially that preset reference signal is strong
The signal strength inputted before degree or pre-stored shutdown to television set.
Preferably, described according to the signal inputted after the signal strength from switching to television set and switching that are inputted before to television set
Comparison result between intensity adjusts the broadcasting gain of power amplifier outside ARC, specifically includes:
If the signal strength inputted before switching to television set is greater than the signal strength inputted after switching to television set, basis
The ratio of the signal strength inputted after the signal strength from switching to television set and switching that input before to television set increases outside ARC
The broadcasting gain of power amplifier；
If the signal strength inputted before switching to television set is less than the signal strength inputted after switching to television set, basis
The ratio of the signal strength inputted after the signal strength from switching to television set and switching that input before to television set reduces outside ARC
The broadcasting gain of power amplifier.
Preferably, described according to the signal inputted after the signal strength from switching to television set and switching that are inputted before to television set
Comparison result between intensity adjusts the broadcasting gain of power amplifier outside ARC, further includes:
The input signal switching is specially when being switched on, if the signal strength from switching to television set and switching that input before are backward
The signal strength of television set input is consistent, then detect power amplifier outside ARC currently playing gain whether with switch before ARC circumferential work
The broadcasting gain put is consistent；
If inconsistent, the broadcasting gain for playing gain power amplifier outside ARC to before switching of power amplifier outside ARC is adjusted；
Wherein, the gain of power amplifier is specially corresponding with the signal strength inputted before shutdown to television set outside ARC before switching
Broadcasting gain.
Volume adjusting apparatus provided by the invention, comprising:
Intensity acquiring unit, for monitoring the signal strength inputted before switching to television set in input signal switching, with
And the signal strength inputted after switching to television set；
Volume adjustment unit, for being inputted according to after the signal strength and switching inputted before switching to television set to television set
Signal strength between comparison result, adjust ARC outside power amplifier broadcasting gain, make switching front and back ARC outside power amplifier it is defeated
Volume is consistent out.
Preferably, the input signal switching includes: booting, the channel switching of input signal or the channel of input signal
Switching.
Preferably, when the input signal switching is specially input signal switching when being switched on, to TV before the switching
The signal strength of machine input is specially the signal inputted before preset reference signal intensity or pre-stored shutdown to television set
Intensity.
Preferably, if the signal strength inputted before switching to television set is strong greater than the signal inputted after switching to television set
Degree, then the volume adjustment unit is according to the letter inputted after the signal strength and switching inputted before switching to television set to television set
The ratio of number intensity increases the broadcasting gain of power amplifier outside ARC；
If the signal strength inputted before switching to television set is less than the signal strength inputted after switching to television set, described
Volume adjustment unit is according to the signal strength inputted after the signal strength and switching inputted before switching to television set to television set
Ratio reduces the broadcasting gain of power amplifier outside ARC.
Preferably, when booting, if the letter inputted after the signal strength from switching to television set and switching that are inputted before to television set
Number intensity is consistent, then
The volume adjustment unit be also used to detect power amplifier outside ARC currently playing gain whether with switch before outside ARC
The broadcasting gain of portion's power amplifier is consistent；If inconsistent, the outside ARC power amplifier before the broadcasting gain to switching of power amplifier outside ARC is adjusted
Broadcasting gain；
Wherein, the gain of power amplifier is specially corresponding with the signal strength inputted before shutdown to television set outside ARC before switching
Broadcasting gain.
Output volume is suddenly big or suddenly small when in order to solve the problems, such as that TV channel or channel switch, in the solution of the present invention,
In television receiver input signal switching, the signal strength inputted before switching to television set can be monitored in advance, and is switched backward
The signal strength of television set input；And according to switching before to television set input signal strength and switching after to television set input
Comparison result between signal strength makes the defeated of the switching front and back outside ARC power amplifier to adjust the broadcasting gain of power amplifier outside ARC
Volume is consistent out.In the solution of the present invention, adjusting be power amplifier outside ARC broadcasting gain, rather than television set exports sound
Amplitude.In this way, even if television set, which is set as RAW output by HDMI ARC connection outside power amplifier and SPDIF output, causes electricity
In the case where sound amplitude can not be adjusted depending on machine, it is consistent that output volume when channel or channel switching also may be implemented.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow diagram of the method for regulation of sound volume of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the volume adjusting apparatus of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or wirelessly coupling.It is used herein to arrange
Diction "and/or" includes one or more associated wholes for listing item or any cell and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless idealization or meaning too formal otherwise will not be used by specific definitions as here
To explain.
Those skilled in the art of the present technique are appreciated that " terminal " used herein above, " terminal device " both include wireless communication
The equipment of number receiver, only has the equipment of the wireless signal receiver of non-emissive ability, and including receiving and emitting hardware
Equipment, have on bidirectional communication link, can carry out two-way communication reception and emit hardware equipment.This equipment
It may include: honeycomb or other communication equipments, shown with single line display or multi-line display or without multi-line
The honeycomb of device or other communication equipments；PCS (Personal Communications Service, PCS Personal Communications System), can
With combine voice, data processing, fax and/or communication ability；PDA (Personal Digital Assistant, it is personal
Digital assistants), it may include radio frequency receiver, pager, the Internet/intranet access, web browser, notepad, day
It goes through and/or GPS (Global Positioning System, global positioning system) receiver；Conventional laptop and/or palm
Type computer or other equipment, have and/or the conventional laptop including radio frequency receiver and/or palmtop computer or its
His equipment." terminal " used herein above, " terminal device " can be it is portable, can transport, be mounted on the vehicles (aviation,
Sea-freight and/or land) in, or be suitable for and/or be configured in local runtime, and/or with distribution form, operate in the earth
And/or any other position operation in space." terminal " used herein above, " terminal device " can also be communication terminal, on
Network termination, music/video playback terminal, such as can be PDA, MID (Mobile Internet Device, mobile Internet
Equipment) and/or mobile phone with music/video playing function, it is also possible to the equipment such as smart television, set-top box.
It was found by the inventors of the present invention that television set and external power amplifier pass through HDMI (High-Definition
Multimedia Interface, high-definition multimedia interface) (Audio Return Channel, audio feedback are logical by ARC
Road) connection, and the SPDIF (digital audio interface) of TV is exported when being set as RAW (source code) output, being can not be by adjusting electricity
Realize that overall output volume is consistent depending on the amplitude of machine sound.
When being set as RAW due to SPDIF output, TV is that source code exports audio to external power amplifier, by external power amplifier solution
Code audio；And TV can not adjust sound amplitude.The existing output sound that television set is mainly adjusted by AVC method,
Therefore, in the above scenario, it is suddenly big come sound when solving switching television channel that the amplitude of sound can not be exported by adjusting TV
Or suddenly small problem.That is, adjusting the method and discomfort of the amplitude of the output sound of television set by existing AVC method
With above-mentioned scene, overall output volume neglects big or suddenly small problem when not can solve channel/television channel switching.
Therefore, the present inventor considers, in the case where television set can not adjust sound amplitude, can pass through ARC
Channel directly adjusts the external power amplifier (may be simply referred to as power amplifier outside ARC herein) connecting with television set by HDMI ARC
Gain is played, so that the output volume of power amplifier outside ARC is maintained at user as far as possible when channel or television channel switch and feels
In comfortable range, prevents output volume suddenly big or suddenly small, influence user experience.It specifically, can be according to before switching and after switching
The difference of the signal strength inputted to television set makes switching front and back ARC circumferential work to adjust the broadcasting gain of power amplifier outside ARC
The output volume put is consistent.In this way, not adjusting sound width in television set even if the SPDIF output of television set is set as RAW output
In the case where degree, it can also solve the problems, such as that overall output volume is neglected big or suddenly small when switching channels or television channel, improves use
Family experience.
Carry out the technical solution that the present invention will be described in detail below in conjunction with attached drawing.
The present invention provides a kind of method for regulation of sound volume, detailed process is as shown in Figure 1, may include steps of:
S101: in input signal switching, the signal strength inputted before monitoring switching to television set, and to electricity after switching
Depending on the signal strength of machine input.
In practical application, television set can be received different types of signal and be played by a variety of television channels, for example,
ATV (Analog Television, simulated television), DTV (Digital Television, DTV), AV (Audio
Video, audio frequency and video), YPbPr (color difference components simulation system), HDMI (High Definition Multimedia
Interface, high-definition multimedia interface) etc..
In the solution of the present invention, input signal switching may include: booting, the channel switching of input signal or input letter
Number channel switching.Wherein, the channel switching of input signal refers to used when television set receives different types of signal
Television channel.
It is considered that in practical application, overall output volume occurs neglecting big or suddenly small when television channel or channel switching
Main reason is that the input signal of television set is changed.Therefore, it to be consistent overall output volume, needs
The adjustment of volume is carried out based on the difference between the input signal before switching and after switching.
Therefore, in the solution of the present invention, receive power-on instruction or channel switching command or channel switching instruction it
Afterwards, before the input signal after received switching is passed back to the outside ARC power amplifier by television set, it is preceding to television set that switching can be monitored
The signal strength inputted after the signal strength of input, and switching to television set.Wherein, signal strength is primarily referred to as input signal
Intensity of sound.
For example, after receiving power-on instruction, due to inputting TV without signal before booting.Therefore, it can will preset
Reference signal intensity or shutdown before to television set input signal strength, as switching before to television set input signal it is strong
Degree.
Wherein, preset reference signal intensity is preset by those skilled in the art, for example, can be with the HDMI of standard
Signal strength-the 12db of input signal is used as reference signal intensity.The preceding signal strength inputted to television set of shutdown is then preparatory
Monitoring when the preceding signal strength inputted to television set and stores before television set shuts down.
It is inputted after referring to television boot-strap to the signal strength that television set inputs after switching when as booting to television set
Signal strength.
Channel after receiving channel switching instruction, after can determining the channel before switching, and switching；Obtain switching
The input signal that preceding channel is inputted to television set, the signal strength for the input signal that will acquire is as defeated to television set before switching
The signal strength entered.And before the signal return that the channel after switching is inputted to television set is to power amplifier outside ARC, acquisition is cut
The input signal that channel after changing is inputted to television set, to television set after the signal strength conduct switching for the input signal that will acquire
The signal strength of input.
TV after receiving television channel switching command, after can determining the television channel before switching, and switching
Channel；The signal strength of the input signal that television channel before obtaining switching is inputted to television set, the input signal that will acquire is made
To switch the preceding signal strength inputted to television set.And it is given by the television channel after switching to the signal return that television set inputs
Outside ARC before power amplifier, the input signal that the television channel after obtaining switching is inputted to television set, the input signal that will acquire
Signal strength is as the signal strength inputted after switching to television set.
S102: according to switching before to television set input signal strength and switching after to television set input signal strength it
Between comparison result, adjust ARC outside power amplifier broadcasting gain, make switching front and back ARC outside power amplifier output volume it is consistent.
It is considered that if television set by power amplifier outside HDMI ARC connection, television set can analytic signal intensity, and pass through
HDMI ARC exports track source code to external power amplifier；But the amplitude of television set output sound can not be adjusted.
Therefore, it in the solution of the present invention, under the scene that TV can not adjust the amplitude of output sound, is intended to outside by ARC
Adjusting for the broadcasting gain of portion's power amplifier comes so that the output volume of power amplifier is consistent outside the ARC of switching front and back.Specifically, can will lead to
It is strong to cross the signal inputted after the signal strength and switching inputted before the switching that step S101 is monitored to television set to television set
Degree is compared；Then, strong according to the signal inputted after the signal strength and switching inputted before switching to television set to television set
Comparison result between degree, to determine the adjustment amount for playing gain of power amplifier outside ARC；It then can be according to the adjustment determined
Amount, the volume of external power amplifier is adjusted by ARC.Wherein, main the broadcasting by external power amplifier of the volume of external power amplifier
Amplification gain determines.
In practical application, in order to enable the output volume of power amplifier is consistent outside the ARC of switching front and back, it may be predetermined that ARC
The output volume of external power amplifier and signal strength, the functional relation of the outside ARC power amplifier played between gain of input signal；After
And according to the functional relation determined, the signal inputted after the preceding signal strength inputted to television set of switching, switching to television set
Intensity and the broadcasting gain for switching power amplifier outside preceding ARC play gain to calculate the target of power amplifier outside ARC, can
So that the broadcasting gain of the consistent outside the ARC power amplifier of output volume of the switching front and back outside ARC power amplifier.
It is considered that consistent to the output volume of power amplifier outside ARC, the signal inputted to television set is strong in practical application
The broadcasting gain of degree and power amplifier outside ARC is often in the relationship of inverse proportion.
Therefore, in the solution of the present invention, can according to after the signal strength and switching inputted before switching to television set to electricity
Depending on the ratio of the signal strength of machine input, the adjustment amount of the broadcasting gain of power amplifier outside ARC is determined；And it is adjusted according to the adjustment amount
The broadcasting gain of power amplifier outside ARC.
For example, if the signal strength inputted before switching to television set is greater than the signal strength inputted after switching to television set,
It can then be increased according to the ratio of the signal strength inputted after the signal strength and switching inputted before switching to television set to television set
The broadcasting gain of power amplifier outside big ARC.
It, can be with if the signal strength inputted before switching to television set is less than the signal strength inputted after switching to television set
According to the ratio of the signal strength inputted after the signal strength and switching inputted before switching to television set to television set, reduce ARC
The broadcasting gain of external power amplifier.
If the signal strength inputted before switching to television set is consistent with the signal strength inputted after switching to television set,
There is no power amplifier outside ARC being kept current in the case where variation in handoff procedure for the broadcasting gain of power amplifier outside ARC
Gain, make switching front and back ARC outside power amplifier output volume it is consistent.
It is considered that after television set restarts booting, before the current broadcasting gain of power amplifier and television set shut down outside ARC outside ARC
The broadcasting gain of portion's power amplifier may be inconsistent.For example, the broadcasting gain of power amplifier returns to default value after power-off restarting outside ARC,
And it is adjusted before shutting down outside ARC in the case where the broadcasting gain of power amplifier, broadcasting gain and electricity when ARC circumferential work is placed on booting
Broadcasting gain depending on power amplifier outside ARC before organ's machine may be inconsistent.In this way, in the case where booting, even if input signal
Signal strength is consistent, if the broadcasting gain of power amplifier is changed outside ARC, will be unable to guarantee and power amplifier outside the preceding ARC that shuts down
Output volume it is consistent.
Therefore, in the solution of the present invention, input signal switching is specially that will switch the preceding letter inputted to television set when being switched on
After being compared after number intensity and switching to the signal strength that television set inputs, if the signal strength inputted before switching to television set
It is consistent with the signal strength inputted after switching to television set, then detect power amplifier outside ARC currently playing gain whether with switching
The broadcasting gain of power amplifier is consistent outside preceding ARC；If inconsistent, adjust outside the broadcasting gain to the preceding ARC of switching of power amplifier outside ARC
The broadcasting gain of portion's power amplifier；If consistent, the currently playing gain of power amplifier outside ARC can be kept.Wherein, before switching outside ARC
The gain of portion's power amplifier is specially broadcasting gain corresponding with the signal strength inputted before switching to television set.
Based on the method for regulation of sound volume of above-mentioned offer, the present invention also provides a kind of volume adjusting apparatus, as shown in Fig. 2,
It include: intensity acquiring unit 201 and volume adjustment unit 202.
Wherein, intensity acquiring unit 201 is used for the signal in input signal switching, inputted before monitoring switching to television set
The signal strength inputted after intensity, and switching to television set.
Volume adjustment unit 202 is used for according to defeated to television set after the signal strength and switching inputted before switching to television set
The comparison result between signal strength entered adjusts the broadcasting gain of power amplifier outside ARC, makes power amplifier outside the ARC of switching front and back
Output volume is consistent.
In the present invention program, input signal switching may include: channel switching or the channel of input signal of input signal
Switching.Wherein, the channel switching of input signal refers to used television channel when television set receives different types of signal.
Television set can be received different types of signal and be played by a variety of television channels, for example, ATV, DTV, AV, YPbPr, HDMI
Deng.
It is considered that in practical application, overall output volume occurs neglecting big or suddenly small when television channel or channel switching
Main reason is that the input signal of television set is changed.Therefore, it to be consistent overall output volume, needs
The adjustment of volume is carried out based on the difference between the input signal before switching and after switching.
Therefore, in the solution of the present invention, receive power-on instruction or channel switching command or channel switching instruction it
Afterwards, television set passes back to the input signal after received switching outside ARC before power amplifier, and intensity acquiring unit 201 can supervise
Survey the signal strength inputted before switching to television set, and the signal strength inputted after switching to television set.Wherein, signal strength
It is primarily referred to as the intensity of sound of input signal.
For example, after receiving power-on instruction, due to inputting TV without signal before booting.Therefore, when booting, switching
The signal strength of forward direction television set input is specially defeated to television set before preset reference signal intensity or pre-stored shutdown
The signal strength entered.
Wherein, preset reference signal intensity is preset by those skilled in the art.For example, can be with the HDMI of standard
Signal strength-the 12db of input signal is used as reference signal intensity.The preceding signal strength inputted to television set of shutdown is then preparatory
Monitoring when the preceding signal strength inputted to television set and stores before television set shuts down.
It is inputted after referring to television boot-strap to the signal strength that television set inputs after switching when as booting to television set
Signal strength.
After receiving channel switching instruction, after intensity acquiring unit 201 can determine the channel before switching, and switching
Channel；The input signal that channel before obtaining switching is inputted to television set, the signal strength conduct for the input signal that will acquire
The signal strength inputted before switching to television set.And the channel after switching is given to the signal return that television set inputs in television set
Outside ARC before power amplifier, the input signal that the channel after obtaining switching is inputted to television set, the signal for the input signal that will acquire
Intensity is as the signal strength inputted after switching to television set.
After receiving television channel switching command, intensity acquiring unit 201 can determine the television channel before switching, with
And the television channel after switching；The input signal that television channel before obtaining switching is inputted to television set, the input letter that will acquire
Number signal strength as switching before to television set input signal strength.Also, intensity acquiring unit 201 will be cut in television set
Before the signal return that television channel after changing is inputted to television set is to power amplifier outside ARC, television channel after obtaining switching to
The signal strength of the input signal of television set input, the input signal that will acquire is strong as the signal inputted after switching to television set
Degree.
It is considered that television set can parse signal strength, and pass through if television set is by HDMI ARC connection external power amplifier
HDMI ARC exports track source code to external power amplifier；But the amplitude of television set output sound can not be adjusted.
Therefore, it in the solution of the present invention, under the scene that TV can not adjust the amplitude of output sound, is intended to outside by ARC
Adjusting for the broadcasting gain of portion's power amplifier comes so that the output volume of power amplifier is consistent outside the ARC of switching front and back.Specifically, volume adjustment
Intensity acquiring unit 201 can be monitored the signal strength inputted before obtained switching to television set by unit 202 and switching is backward
The signal strength of television set input is compared；Then, backward according to the signal strength from switching to television set and switching that are inputted before
Comparison result between the signal strength of television set input, to determine the adjustment amount for playing gain of power amplifier outside ARC；Then may be used
According to the adjustment amount determined, the volume of external power amplifier is adjusted by ARC.Wherein, the volume master of external power amplifier
It to be determined by the broadcasting gain of external power amplifier.
In practical application, in order to enable the output volume of power amplifier is consistent outside the ARC of switching front and back, it may be predetermined that ARC
The output volume of external power amplifier and signal strength, the functional relation of the outside ARC power amplifier played between gain of input signal；After
And according to the functional relation determined, the signal inputted after the preceding signal strength inputted to television set of switching, switching to television set
Intensity and the broadcasting gain for switching power amplifier outside preceding ARC play gain to calculate the target of power amplifier outside ARC, can
So that the broadcasting gain of the consistent outside the ARC power amplifier of output volume of the switching front and back outside ARC power amplifier.
It is considered that consistent to the output volume of power amplifier outside ARC, the signal inputted to television set is strong in practical application
The broadcasting gain of degree and power amplifier outside ARC is often in the relationship of inverse proportion.
Therefore, in the solution of the present invention, can according to after the signal strength and switching inputted before switching to television set to electricity
Depending on the ratio of the signal strength of machine input, the adjustment amount of the broadcasting gain of power amplifier outside ARC is determined；And it is adjusted according to the adjustment amount
The broadcasting gain of power amplifier outside ARC.
For example, if the signal strength inputted before switching to television set is greater than the signal strength inputted after switching to television set,
Then volume adjustment unit 202 can be according to the letter inputted after the signal strength and switching inputted before switching to television set to television set
The ratio of number intensity increases the broadcasting gain of power amplifier outside ARC.
If the signal strength inputted before switching to television set is less than the signal strength inputted after switching to television set, volume
Adjustment unit 202 can be according to the signal strength inputted after the signal strength and switching inputted before switching to television set to television set
Ratio, reduce ARC outside power amplifier broadcasting gain.
If the signal strength inputted before switching to television set is consistent with the signal strength inputted after switching to television set,
There is no in the case where variation, volume adjustment unit 202 can be kept in handoff procedure for the broadcasting gain of power amplifier outside ARC
The current gain of power amplifier outside ARC keeps the output volume of power amplifier outside the ARC of switching front and back consistent.
It is considered that after television set restarts booting, before the current broadcasting gain of power amplifier and television set shut down outside ARC outside ARC
The broadcasting gain of portion's power amplifier may be inconsistent.For example, the broadcasting gain of power amplifier returns to default value after power-off restarting outside ARC,
And it is adjusted before shutting down outside ARC in the case where the broadcasting gain of power amplifier, broadcasting gain and electricity when ARC circumferential work is placed on booting
Broadcasting gain depending on power amplifier outside ARC before organ's machine may be inconsistent.In this way, in the case where booting, even if input signal
Signal strength is consistent, if the broadcasting gain of power amplifier is changed outside ARC, will be unable to guarantee and power amplifier outside the preceding ARC that shuts down
Output volume it is consistent.
Therefore, in the solution of the present invention, input signal switching is specially that will switch the preceding letter inputted to television set when being switched on
After being compared after number intensity and switching to the signal strength that television set inputs, if the signal strength inputted before switching to television set
Consistent with the signal strength inputted after switching to television set, then volume adjustment unit 202 can detecte the current of the outside ARC power amplifier
Whether consistent with the broadcasting gain of power amplifier outside preceding ARC is switched play gain；If inconsistent, volume adjustment unit 202 is adjusted
The broadcasting gain for playing gain power amplifier outside ARC to before switching of power amplifier outside ARC；If consistent, volume adjustment unit 202 can
To keep the currently playing gain of power amplifier outside ARC.Wherein, before switching outside ARC the gain of power amplifier be specially with before switching to
The corresponding broadcasting gain of signal strength of television set input.
In the embodiment of the present invention, the concrete function realization of each unit in volume adjusting apparatus can refer to above-mentioned volume
The specific implementation of each step in method of adjustment, details are not described herein.
Output volume is suddenly big or suddenly small when in order to solve the problems, such as that TV channel or channel switch, in the solution of the present invention,
In television receiver input signal switching, the signal strength inputted before switching to television set can be monitored in advance, and is switched backward
The signal strength of television set input；And according to switching before to television set input signal strength and switching after to television set input
Comparison result between signal strength makes the defeated of the switching front and back outside ARC power amplifier to adjust the broadcasting gain of power amplifier outside ARC
Volume is consistent out.In the solution of the present invention, adjusting be power amplifier outside ARC broadcasting gain, rather than television set exports sound
Amplitude.In this way, even if television set, which is set as RAW output by HDMI ARC connection outside power amplifier and SPDIF output, causes electricity
In the case where sound amplitude can not be adjusted depending on machine, it is consistent that output volume when channel or channel switching also may be implemented.
Those skilled in the art of the present technique are appreciated that the present invention includes being related to for executing in operation described herein
One or more equipment.These equipment can specially design and manufacture for required purpose, or also may include general
Known device in computer.These equipment have the computer program being stored in it, these computer programs are selectively
Activation or reconstruct.Such computer program can be stored in equipment (for example, computer) readable medium or be stored in
It e-command and is coupled in any kind of medium of bus respectively suitable for storage, the computer-readable medium includes but not
Be limited to any kind of disk (including floppy disk, hard disk, CD, CD-ROM and magneto-optic disk), ROM (Read-Only Memory, only
Read memory), RAM (Random Access Memory, immediately memory), EPROM (Erasable Programmable
Read-Only Memory, Erarable Programmable Read only Memory), EEPROM (Electrically Erasable
Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or light card
Piece.It is, readable medium includes by equipment (for example, computer) with any Jie for the form storage or transmission information that can be read
Matter.
Those skilled in the art of the present technique be appreciated that can be realized with computer program instructions these structure charts and/or
The combination of each frame and these structure charts and/or the frame in block diagram and/or flow graph in block diagram and/or flow graph.This technology neck
Field technique personnel be appreciated that these computer program instructions can be supplied to general purpose computer, special purpose computer or other
The processor of programmable data processing method is realized, to pass through the processing of computer or other programmable data processing methods
The scheme specified in frame or multiple frames of the device to execute structure chart and/or block diagram and/or flow graph disclosed by the invention.
Those skilled in the art of the present technique have been appreciated that in the present invention the various operations crossed by discussion, method, in process
Steps, measures, and schemes can be replaced, changed, combined or be deleted.Further, each with having been crossed by discussion in the present invention
Kind of operation, method, other steps, measures, and schemes in process may also be alternated, changed, rearranged, decomposed, combined or deleted.
Further, in the prior art to have and the step in various operations, method disclosed in the present invention, process, measure, scheme
It may also be alternated, changed, rearranged, decomposed, combined or deleted.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of method for regulation of sound volume characterized by comprising
In input signal switching, the signal strength inputted before monitoring switching to television set, and inputted after switching to television set
Signal strength；
According to the signal strength inputted before switching to television set compared between the signal strength inputted after switching to television set
As a result, adjusting the broadcasting gain of power amplifier outside ARC, keep the output volume of power amplifier outside the ARC of switching front and back consistent.
2. the method according to claim 1, wherein input signal switching includes: booting, input signal
The channel switching of channel switching or input signal.
3. according to the method described in claim 2, it is characterized in that, booting when, before the switching to television set input signal
Intensity is specially the signal strength inputted before preset reference signal intensity or pre-stored shutdown to television set.
4. method according to claim 1 to 3, which is characterized in that described according to the letter inputted before switching to television set
The comparison result between signal strength inputted after number intensity and switching to television set, adjusts the broadcasting gain of power amplifier outside ARC,
It specifically includes:
If the signal strength inputted before switching to television set is greater than the signal strength inputted after switching to television set, according to switching
The ratio of the signal strength inputted after the signal strength and switching of the input of forward direction television set to television set, increases power amplifier outside ARC
Broadcasting gain；
If the signal strength inputted before switching to television set is less than the signal strength inputted after switching to television set, according to switching
The ratio of the signal strength inputted after the signal strength and switching of the input of forward direction television set to television set, reduces power amplifier outside ARC
Broadcasting gain.
5. according to the method described in claim 4, it is characterized in that, described according to the signal strength inputted before switching to television set
With after switching to television set input signal strength between comparison result, adjust ARC outside power amplifier broadcasting gain, also wrap
It includes:
The input signal switching is specially when being switched on, if to TV after the signal strength from switching to television set and switching that input before
The signal strength of machine input is consistent, then detect power amplifier outside ARC currently playing gain whether with switch before power amplifier outside ARC
It is consistent to play gain；
If inconsistent, the broadcasting gain for playing gain power amplifier outside ARC to before switching of power amplifier outside ARC is adjusted；
Wherein, the gain of power amplifier is specially broadcasts corresponding with the signal strength inputted before shutdown to television set outside ARC before switching
Amplification gain.
6. a kind of volume adjusting apparatus characterized by comprising
Intensity acquiring unit, in input signal switching, monitoring to switch the preceding signal strength inputted to television set, and cuts
The signal strength inputted after changing to television set；
Volume adjustment unit, for according to the letter inputted after the signal strength and switching inputted before switching to television set to television set
Comparison result between number intensity adjusts the broadcasting gain of power amplifier outside ARC, makes the output sound of power amplifier outside the ARC of switching front and back
Amount is consistent.
7. device according to claim 6, which is characterized in that the input signal switching includes: booting, input signal
The channel switching of channel switching or input signal.
8. device according to claim 7, which is characterized in that when booting, to the signal of television set input before the switching
Intensity is specially the signal strength inputted before preset reference signal intensity or pre-stored shutdown to television set.
9. according to device as claimed in claim 6 to 8, which is characterized in that
If the signal strength inputted before switching to television set is greater than the signal strength inputted after switching to television set, the volume
Adjustment unit according to switching before to television set input signal strength and switching after to television set input signal strength ratio,
Increase the broadcasting gain of power amplifier outside ARC；
If the signal strength inputted before switching to television set is less than the signal strength inputted after switching to television set, the volume
Adjustment unit according to switching before to television set input signal strength and switching after to television set input signal strength ratio,
Reduce the broadcasting gain of power amplifier outside ARC.
10. device according to claim 9, which is characterized in that the input signal switching is specially when being switched on, if switching
The signal strength of forward direction television set input is consistent with the signal strength inputted after switching to television set, then
The volume adjustment unit be also used to detect power amplifier outside ARC currently playing gain whether with switch before ARC circumferential work
The broadcasting gain put is consistent；If inconsistent, broadcasting gain the broadcasting to the preceding ARC outside power amplifier of switching of power amplifier outside ARC is adjusted
Amplification gain；
Wherein, the gain of power amplifier is specially broadcasts corresponding with the signal strength inputted before shutdown to television set outside ARC before switching
Amplification gain.
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| CN201610597464.4A CN106162320B (en) | 2016-07-27 | 2016-07-27 | Method for regulation of sound volume and device |
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| CN201610597464.4A CN106162320B (en) | 2016-07-27 | 2016-07-27 | Method for regulation of sound volume and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107333171B (en) * | 2017-06-27 | 2020-05-22 | 海信视像科技股份有限公司 | Method and device for synchronizing sound of television broadcast and terminal equipment |
| CN108429929B (en) * | 2018-05-08 | 2020-12-08 | 海信视像科技股份有限公司 | Audio track playing method, device and storage medium |
| CN111654744A (en) * | 2020-06-08 | 2020-09-11 | 海信视像科技股份有限公司 | Sound output amplitude adjusting method and display device |
| CN112153315B (en) * | 2020-08-31 | 2023-08-11 | 惠州高盛达智显科技有限公司 | Signal source channel sound sensitivity adjusting method and system based on power protection feedback |
| CN112218152B (en) * | 2020-10-15 | 2021-06-29 | 四川长虹电器股份有限公司 | Television ARC and eARC compatible method |
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| JP5429552B2 (en) * | 2009-12-03 | 2014-02-26 | ソニー株式会社 | Control device, control method, and control system |
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| JPH0698399A (en) * | 1992-09-14 | 1994-04-08 | Hitachi Ltd | Sound output switching circuit |
| CN101820520A (en) * | 2009-02-27 | 2010-09-01 | 深圳Tcl新技术有限公司 | Integrated digital TV capable of adjusting volume automatically and implementing method thereof |
| CN201393273Y (en) * | 2009-03-04 | 2010-01-27 | 南京夏普电子有限公司 | Automatic sound regulation device of TV set and TV set |
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| CN106162320A (en) | 2016-11-23 |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Video Technology Co., Ltd Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: HISENSE ELECTRIC Co.,Ltd. |