CN103686424A

CN103686424A - Automatic setting method and device for sound system

Info

Publication number: CN103686424A
Application number: CN201310687552.XA
Authority: CN
Inventors: 王球; 毕军辉
Original assignee: Shenzhen TCL New Technology Co Ltd
Current assignee: Shenzhen TCL New Technology Co Ltd
Priority date: 2013-12-13
Filing date: 2013-12-13
Publication date: 2014-03-26
Anticipated expiration: 2033-12-13
Also published as: CN103686424B

Abstract

The invention discloses an automatic setting method and device for a sound system. The method includes the steps that after television channel searching is ended, the searched television channels are selected to be played one by one, and a preset sound system is configured for the television channel played at present; crest values of sound signals of preset frequencies output by the television channel played at present in a first preset time are obtained for the first time, and the average value a of all the crest values obtained for the first time is worked out; crest values of sound signals of preset frequencies output by the television channel played at present in the first preset time are obtained for the second time, and the average value b of all the crest values obtained for the second time is worked out; if a is not equal to b, the preset sound system is configured to be the sound system of the television channel played at present. Sound systems of all the television channels played by a television can be recognized automatically, the sound systems of all the television channels are set correspondingly, automation of sound system setting of the television channels is achieved, and the sound system setting efficiency of the television channels is improved.

Description

The automatic setting method of sound accompaniment standard and device

Technical field

The present invention relates to TV operational factor field is set, specially refer to automatic setting method and the device of sound accompaniment standard.

Background technology

TV, because of its abundant play content, is more and more subject to numerous crowds' welcome.Therefore, increasing TV programme and television channel are developed, the sound accompaniment standard possibility of each television channel of exploitation is different (for example, there are the sound accompaniment standards such as D, K, I or B), TV is after tuning finishes, need to arrange the sound accompaniment standard of each channel, to guarantee normal viewing effect.

At present, the set-up mode of sound accompaniment standard manually arranges after tuning finishes for user, the process manually arranging is for mainly being recalled menu is set by remote controller, from different sound accompaniment standards, select one by one, finally from a plurality of, prestore sound accompaniment standard, choose the sound accompaniment standard corresponding with the television channel of playing.

The above-mentioned mode process that television channel sound accompaniment standard is manually set is numerous and diverse, need to take a long time the sound accompaniment standard of each television channel is arranged, and has reduced the efficiency that television channel sound accompaniment standard arranges.

Summary of the invention

Main purpose of the present invention is for providing a kind of automatic setting method and device of sound accompaniment standard, realization automatically identifies the sound accompaniment standard of each television channel of televising, and the corresponding sound accompaniment standard that each television channel is set, realize the automation that television channel sound accompaniment standard arranges, improve the efficiency that television channel sound accompaniment standard arranges.

The present invention proposes a kind of automatic setting method of sound accompaniment standard, and the method comprising the steps of:

A, after television channel search finishes, select one by one the television channel searching to play, and configure one by one preset sound accompaniment standard for the television channel of current broadcasting;

B, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, obtain for the first time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time;

C, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time;

If D a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting, or, if a equals b, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, and repeat above-mentioned steps B and C, until all preset sound accompaniment standard configurations are complete.

Preferably, the step that the described one by one television channel that selection searches is play comprises:

According to the 3rd Preset Time interval, select one by one the television channel searching to play; Or

Select one by one the television channel searching to play, when the television channel configuration successful sound accompaniment standard of current broadcasting, select another television channel of playing to play, or, when the television channel of current broadcasting and all preset sound accompaniment standard configuration failure, select another television channel of playing to play.

Preferably, described step B comprises:

B1, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, the audio signal of the predeterminated frequency of the TV output of this current broadcasting is carried out to filtering processing;

B2, the simulated audio signal after filtering is processed are converted to digital audio and video signals, in the digital audio and video signals from transforming, determine the audio signal of predeterminated frequency;

B3, obtain definite audio signal each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time.

Preferably, described step B2 replaces with:

B4, the simulated audio signal after filtering is processed carry out second wave pressure contracting, to obtain first wave simulation audio signal after second wave pressure contracting, and from first wave simulation audio signal obtaining, determine the audio signal of predeterminated frequency.

The present invention also proposes a kind of automatic setting method of sound accompaniment standard, and the method comprising the steps of:

E, when often searching a television channel, for the TV channel searching configures preset sound accompaniment standard one by one;

F, for after preset sound accompaniment standard of TV channel assignment of searching, obtain for the first time the audio signal of the predeterminated frequency of this current television channel output, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time;

G, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of the predeterminated frequency of this current television channel output, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time;

If H a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is this current television channel, or, if a equals b, for this current television channel, configure the preset sound accompaniment standard that another does not configure, and repeat above-mentioned steps F and G, until all preset sound accompaniment standard configurations are complete.

The present invention also proposes a kind of Lookup protocol device of sound accompaniment standard, and this device comprises:

Processing module, for after television channel search finishes, selects the television channel searching to play one by one, and configures one by one preset sound accompaniment standard for the television channel of current broadcasting;

Magnitude computation module, for after being a preset sound accompaniment standard of television channel configuration of current broadcasting, obtain for the first time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time; And

When obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time;

Sound accompaniment arranges module, if be not equal to b for a, configures the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting; Or if a equals b, the television channel that processing module is this current broadcasting configures the preset sound accompaniment standard that another does not configure, and calculates a and b by magnitude computation module, until all preset sound accompaniment standard configurations are complete.

Preferably, described processing module, for according to the 3rd Preset Time interval, selects the television channel searching to play one by one; Or

Preferably, this device also comprises modular converter,

Described processing module, for after being a preset sound accompaniment standard of television channel configuration of current broadcasting, carries out filtering processing by the audio signal of the predeterminated frequency of the TV output of this current broadcasting;

Described modular converter, is converted to digital audio and video signals for the simulated audio signal after filtering is processed, and in the digital audio and video signals from transforming, determines the audio signal of predeterminated frequency;

Described magnitude computation module, for obtaining definite audio signal each crest value in the first Preset Time, and calculates the mean value a of all crest values that obtain for the first time.

Preferably, described processing module, also carries out second wave pressure contracting for the simulated audio signal after filtering is processed, to obtain first wave simulation audio signal after second wave pressure contracting, and from first wave simulation audio signal obtaining, determine the audio signal of predeterminated frequency.

Processing module, for when often searching a television channel, for the TV channel searching configures preset sound accompaniment standard one by one;

Magnitude computation module, after the preset sound accompaniment standard of TV channel assignment for searching, obtain for the first time the audio signal of the predeterminated frequency of this current television channel output, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time; And

When obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of the predeterminated frequency of this current television channel output, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time;

Sound accompaniment configuration module, if be not equal to b for a, configure the sound accompaniment standard that this preset sound accompaniment standard is this current television channel, or, if a equals b, processing module configures for this current television channel the preset sound accompaniment standard that another does not configure, and calculates a and b by magnitude computation module, until all preset sound accompaniment standard configurations are complete.

Relative prior art, the present invention is after television channel has been searched for, select one by one the television channel searching to play, and configure one by one preset sound accompaniment standard for the television channel of current broadcasting, for the first time and after default the second time, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, correspondence calculates mean value a and the b of all crest values that obtain, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting.Realization automatically identifies the sound accompaniment standard of each television channel of televising, and the corresponding sound accompaniment standard that each television channel is set, and realizes the automation that television channel sound accompaniment standard arranges, and improves the efficiency that television channel sound accompaniment standard arranges.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of the first embodiment of the automatic setting method of sound accompaniment standard of the present invention;

Fig. 2 is the waveform schematic diagram of the audio signal of sound accompaniment standard when mistake is set;

Fig. 3 is the waveform schematic diagram that sound accompaniment standard arranges audio signal when correct;

Fig. 4 is the schematic flow sheet of the second embodiment of the automatic setting method of sound accompaniment standard of the present invention;

Fig. 5 is the schematic diagram of a hardware structure of sound accompaniment standard setting;

Fig. 6 is the schematic flow sheet of the 3rd embodiment of the automatic setting method of sound accompaniment standard of the present invention;

Fig. 7 is the schematic diagram of another hardware structure of sound accompaniment standard setting

Fig. 8 is the schematic flow sheet of the 4th embodiment of the automatic setting method of sound accompaniment standard of the present invention;

Fig. 9 is the functional block diagram of the first embodiment of the Lookup protocol device of sound accompaniment standard of the present invention;

Figure 10 is the functional block diagram of the second embodiment of the Lookup protocol device of sound accompaniment standard of the present invention;

Figure 11 is the functional block diagram of the 3rd embodiment of the Lookup protocol device of sound accompaniment standard of the present invention.

The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.

Embodiment

Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

As shown in Figure 1, be the schematic flow sheet of the first embodiment of the automatic setting method of sound accompaniment standard of the present invention.

It is emphasized that: flow chart shown in Fig. 1 is only a preferred embodiment, those skilled in the art is when knowing, any embodiment building around inventive concept should not depart from the scope containing in following technical scheme:

A, after television channel search finishes, select one by one the television channel searching to play, and configure one by one preset sound accompaniment standard for the television channel of current broadcasting; B, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, obtain for the first time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time; C, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time; If D a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting, or, if a equals b, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, and repeat above-mentioned steps B and C, until all preset sound accompaniment standard configurations are complete.

Below the step that the present embodiment is progressively realized sound accompaniment standard Lookup protocol:

Step S11, after television channel search finishes, selects the television channel searching to play one by one, and configures one by one preset sound accompaniment standard for the television channel of current broadcasting.

In the present embodiment, TV presets a plurality of sound accompaniment standards (for example, D, K, I, B or G etc.), one or more during TV is can be preset above-mentioned.The carrier frequency of described preset sound accompaniment standard can be identical or different, each television channel is by the carrier frequency corresponding to preset sound accompaniment standard of configuration, export the audio signal of a plurality of different frequencies, for example, the carrier frequency of D, K standard is identical, is all 6.5KHZ, the carrier frequency of B, G standard is 5.5KHZ, if the preset sound accompaniment standard of the current configuration of television channel is D, this television channel, by carrier frequency 6.5KHZ, is exported the audio signal (audio signals of 2KHZ, 2.5KHZ or 3KHZ etc.) of a plurality of different frequencies.When the automatic channel search instruction that receives user, TV carries out tuning operation automatically, or when the manual tuning instruction that receives user, each tuning instruction according to receiving, searches corresponding television channel.After television channel automatic search finishes, or according to each manual tuning instruction of user, searched for after television channel, if while only searching a television channel, the channel this being searched is play, or, when searching a plurality of television channel, select one by one the television channel search to play, and configure one by one preset sound accompaniment standard for the television channel of current broadcasting.When a television channel of selecting to search is play, for the television channel of current broadcasting configures a preset sound accompaniment standard or the identical a plurality of preset sound accompaniment standard of carrier frequency.In other embodiments of the invention, in order to make user can watch timely searched television channel, when the television channel searching is play for the first time, it is just this television channel configuration sound accompaniment standard, avoid after all television channel search finish, for each television channel configuration sound accompaniment standard searching, and affect user, watch the television channel searching one by one.

Step S12, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, obtain for the first time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time;

Step S13, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time.

In the present embodiment, for the television channel of current broadcasting, configuring after the preset sound accompaniment standard that one or more carrier frequency is identical, the television channel of this current broadcasting is by the carrier frequency of the preset sound accompaniment standard of configuration, export the audio signal of a plurality of different frequencies, obtain for the first time the audio signal of predeterminated frequency of television channel output of this current broadcasting (from the carrier frequency corresponding to preset sound accompaniment standard of the television channel configuration of this current broadcasting, in the audio signal of a plurality of different frequencies of output, determine the audio signal of predeterminated frequency, the audio signal of the television channel output of current broadcasting is simulated audio signal), each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time.Described predeterminated frequency is preferably 2KHZ, can also be also any suitable frequency that the users such as 1.5KHZ or 2.5KHZ arrange in advance.Described the first Preset Time is preferably 5 milliseconds, can also be also the time interval that any suitable users such as 6 milliseconds or 7 milliseconds arrange in advance.The cycle of 2KHz simulated audio signal is 0.5 millisecond, each crest value in each cycle within from 0 to 5 millisecond is respectively a0, a1 ... a9, if just in time start to obtain from crest, can get a 11st crest value A10, calculate all crest values that obtain for the first time and obtain mean value a.When obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time, and describedly when obtaining described crest value for the first time, rise, rise when having obtained for the first time in the first Preset Time all crest values.Described the second Preset Time is preferably 500 milliseconds, can also be also the time interval that any suitable users such as 400 milliseconds or 600 milliseconds arrange in advance.After the b of all crest values that calculate the mean value a of all crest values that obtain for the first time and obtain for the second time, a and b are analyzed, to determine whether a equals b.

Step S14, analyzes a and whether equals b, if a is not equal to b, carries out following step S15; If a equals b, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, and repeat above-mentioned steps S12 and S13, until all preset sound accompaniment standard configurations are complete.

Step S15, configures the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting.

In the present embodiment, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting (after the sound accompaniment standard configuration successful of television channel that is successfully this current broadcasting, no longer configure again sound accompaniment standard for the television channel of this current broadcasting, but successfully configuring after sound accompaniment standard for the television channel of this current broadcasting, when playing the television channel of this sound accompaniment standard configuration successful, directly output sound accompaniment), play the next television channel that does not configure sound accompaniment standard, for the television channel of current broadcasting configures preset sound accompaniment standard one by one, and according to above-mentioned steps S12 and S13, to identify the sound accompaniment standard of the next television channel that does not configure sound accompaniment standard and to arrange, the television channel that does not configure sound accompaniment standard for the next one configures sound accompaniment standard, if a equals b, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, and repeat above-mentioned steps S12 and S13, until all preset sound accompaniment standard configurations are complete.

The described principle that identifies the sound accompaniment standard of television channel is: with reference to figure 2, when sound accompaniment standard arranges mistake, tuner audio signal is the noise in multifrequency territory, and amplitude is almost equal, detects wherein 2KHz signal amplitude, and each amplitude is almost equal; With reference to figure 3, when sound accompaniment standard arranges when correct, although TV programme is dubbed, be also multifrequency territory, amplitude is change at random.Utilize These characteristics, whether the mean value of all crest values of the audio signal of the television channel output of the different time sections that can obtain by judgement in the first Preset Time equates, identify the sound accompaniment standard of each television channel, when the mean value of all crest values of the audio signal of exporting at the television channel of the different time sections of obtaining in the first Preset Time equates, the sound accompaniment standard that this sound accompaniment standard is not TV channel; When the mean value of all crest values in the audio signal of the television channel output of the different time sections of obtaining in the first Preset Time is unequal, the sound accompaniment standard that this sound accompaniment standard is TV channel.

In the present embodiment, the step that the described one by one television channel that selection searches is play comprises: according to the 3rd Preset Time interval, select one by one the television channel searching to play; Or select one by one the television channel searching to play, when the television channel configuration successful sound accompaniment standard of current broadcasting, select another television channel of playing to play, or, when the television channel of current broadcasting and all preset sound accompaniment standard configuration failure, select another television channel of playing to play.Described the 3rd Preset Time interval is greater than the second Preset Time and two the first Preset Time sums, and described the 3rd Preset Time interval is preferably 510 milliseconds, take to guarantee the television channel configuration sound accompaniment standard that enough time is current broadcasting.

The present embodiment is after television channel search finishes, select one by one the television channel searching to play, and configure one by one preset sound accompaniment standard for the television channel of current broadcasting, for the first time and after default the second time, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, correspondence calculates mean value a and the b of all crest values that obtain, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting.Realization automatically identifies the sound accompaniment standard of each television channel of televising, and the corresponding sound accompaniment standard that each television channel is set, and realizes the automation that television channel sound accompaniment standard arranges, and improves the efficiency that television channel sound accompaniment standard arranges.

As shown in Figure 4, be the schematic flow sheet of the second embodiment of the automatic setting method of sound accompaniment standard of the present invention.

Based on above-mentioned the first embodiment, step S12 comprises:

Step S1201, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, carries out filtering processing by the audio signal of the TV output of this current broadcasting;

Step S1202, the simulated audio signal after filtering is processed is converted to digital audio and video signals, in the digital audio and video signals from transforming, determines the audio signal of predeterminated frequency;

Step S1203, obtains definite audio signal each crest value in the first Preset Time, and calculates the mean value a of all crest values that obtain for the first time.

In the present embodiment, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, with reference to figure 5, U1 is the tuner chip si2176 that Silicon lab produces, U5 is operational amplifier, U5 and C2, C3, C4, R3, R4, R5 forms high pass low pass frequency selection circuit and forms 2K active band-pass filter, the high frequency low frequency signal that filtering does not need, in order to avoid produce, disturb, after processing by filtering, the audio signal of unwanted high frequency or low frequency is filtered, obtain needing the audio signal of frequency, the Audio(simulated audio signal of tuner output) by C1, be coupled to after the high pass low pass filter processing of U5 composition, by C5, be coupled to the analogue audio frequency input of U2, 24 moduluses (A/D) transducer PCM1808 that U2Shi Texas Instrument produces, by A/D, change simulated audio signal is converted to digital audio and video signals, digital audio and video signals can better obtain the crest value of this audio signal, from the digital audio and video signals conversion, determine the audio signal of predeterminated frequency, obtain needing audio signal to be processed, obtain definite audio signal each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting, after U2 conversion, the digital audio and video signals (I2S) of output is exported to respectively U3(CPU) and U4(power amplifier), pass through I2C(SDA, SCL) control U4 and open volume, if a equals b, the television channel of current broadcasting is in mute state, and for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, repeated execution of steps S12 and step S13, until all preset sound accompaniment standard configurations are complete.

After the present embodiment passes through to be a preset sound accompaniment standard of television channel configuration of current broadcasting, the audio signal of the TV output of this current broadcasting is carried out to filtering processing, and the simulated audio signal after filtering is processed is converted to digital audio and video signals, to enable more accurately and effectively to identify the television channel sound accompaniment standard of current broadcasting, and the sound accompaniment standard of the television channel of this current broadcasting of Lookup protocol, improve the accuracy that sound accompaniment standard arranges, further improve the efficiency that television channel sound accompaniment standard arranges.

As shown in Figure 6, be the schematic flow sheet of the 3rd embodiment of the automatic setting method of sound accompaniment standard of the present invention.

Based on above-mentioned the second embodiment, step S1202 replaces with:

Step S1204, the simulated audio signal after filtering is processed carries out second wave pressure contracting, to obtain first wave simulation audio signal after second wave pressure contracting, and from first wave simulation audio signal obtaining, determines the audio signal of predeterminated frequency.

In the present embodiment, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, the audio signal of the TV output of this current broadcasting is carried out to filtering processing, simulated audio signal after filtering is processed carries out second wave pressure contracting, to obtain first wave simulation audio signal after second wave pressure contracting, and from first wave simulation audio signal obtaining, determine the audio signal of predeterminated frequency, obtain definite audio signal each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time.For example, with reference to figure 7, U1 is the tuner chip si2176 that Silicon lab produces, U5 is operational amplifier, U5 and C2, C3, C4, R3, R4, R5 form high pass low pass frequency selection circuit and form 2K active band-pass filter, the high frequency low frequency signal that filtering does not need, in order to avoid produce, disturb, after processing by filtering, the audio signal of unwanted high frequency or low frequency is filtered, obtain needing the audio signal of frequency, the Audio(simulated audio signal of tuner output) by C1, be coupled to after the high pass low pass filter processing of U5 composition, pass through again D1(diode) second wave pressure is contracted and obtains the upper half-wave of audio signal, from first ripple audio signal obtaining, determine the audio signal of predeterminated frequency, definite audio signal is exported to A/D input port, obtain definite audio signal each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting, after U2 conversion, the digital audio and video signals (I2S) of output is exported to respectively U3(CPU) and U4(power amplifier), pass through I2C(SDA, SCL) control U4 and open volume, if a equals b, the television channel of current broadcasting is in mute state, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, repeated execution of steps S12 and step S13, until all preset sound accompaniment standard configurations are complete, described A/D input port can obtain the crest value of this definite audio signal, all crest values in the first Preset Time of this definite audio signal can be obtained for the first time and for the second time according to the audio signal obtaining, to identify the sound accompaniment standard of this television channel.

After the present embodiment passes through to be a preset sound accompaniment standard of television channel configuration of current broadcasting, simulated audio signal after filtering is processed carries out second wave pressure contracting, to obtain first wave simulation audio signal after second wave pressure contracting, to enable more accurately and effectively to identify the television channel sound accompaniment standard of current broadcasting, and the sound accompaniment standard of the television channel of this current broadcasting of Lookup protocol, improve the accuracy that sound accompaniment standard arranges, further improve the efficiency that television channel sound accompaniment standard arranges.

As shown in Figure 8, be the schematic flow sheet of the 4th embodiment of the automatic setting method of sound accompaniment standard of the present invention.

Based on above-mentioned first, second, and third embodiment, the present invention also proposes a kind of automatic setting method of sound accompaniment standard, the difference of the automatic setting method of the sound accompaniment standard in the method and above-described embodiment is, when often searching a television channel, for this television channel Lookup protocol sound accompaniment standard searching, the method comprising the steps of:

Step S16, when often searching a television channel, for the TV channel searching configures preset sound accompaniment standard one by one.

In the present embodiment, TV presets a plurality of sound accompaniment standards (for example, D, K, I, B or G etc.), one or more during TV is can be preset above-mentioned.The carrier frequency of described preset sound accompaniment standard can be identical or different, each television channel is by the carrier frequency corresponding to preset sound accompaniment standard of configuration, export the audio signal of a plurality of different frequencies, for example, the carrier frequency of D, K standard is identical, is all 6.5KHZ, the carrier frequency of B, G standard is 5.5KHZ, if the preset sound accompaniment standard of the current configuration of television channel is D, this television channel, by carrier frequency 6.5KHZ, is exported the audio signal (audio signals of 2KHZ, 2.5KHZ or 3KHZ etc.) of a plurality of different frequencies.When the automatic channel search instruction that receives user, TV carries out tuning operation automatically, or, when the manual tuning instruction that receives user, according to each tuning instruction receiving, search corresponding television channel, after the every automatic search to of a television channel television channel, or according to user's manually tuning instruction each time, search after a television channel, for current search to television channel configure one by one preset sound accompaniment standard, for the television channel of current broadcasting configures a preset sound accompaniment standard or the identical a plurality of sound accompaniment standards of carrier frequency.

Step S17, after the preset sound accompaniment standard of TV channel assignment for searching, obtain for the first time the audio signal of the predeterminated frequency of this current television channel output, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time;

Step S18, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of the predeterminated frequency of this current television channel output, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time;

Step S19, analyzes a and whether equals b, if a is not equal to b, carries out following step S20; If a equals b, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, and repeat above-mentioned steps S17 and S18, until all preset sound accompaniment standard configurations are complete.

Step S20, configures the sound accompaniment standard that this preset sound accompaniment standard is this current television channel.

Step S16, step S17, step S19 and step S20 are the same with the implementation of the corresponding step of above-mentioned first, second, and third embodiment, at this, describe no longer one by one.

At the present embodiment when often searching a television channel, for the television channel when searching configures preset sound accompaniment standard one by one, for the first time and after default the second time, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, correspondence calculates mean value a and the b of all crest values that obtain, if a is not equal to b, configures the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting.Realization automatically identifies the sound accompaniment standard of each television channel of televising, and the corresponding sound accompaniment standard that each television channel is set, and realizes the automation that television channel sound accompaniment standard arranges, and improves the efficiency that television channel sound accompaniment standard arranges.

As shown in Figure 9, be the functional block diagram of the first embodiment of the Lookup protocol device of sound accompaniment standard of the present invention.This device comprises processing module 10, and magnitude computation module 20 and sound accompaniment arrange module 30,

Described processing module 10, for after television channel search finishes, selects the television channel searching to play one by one, and configures one by one preset sound accompaniment standard for the television channel of current broadcasting.

In the present embodiment, TV presets a plurality of sound accompaniment standards (for example, D, K, I, B or G etc.), one or more during TV is can be preset above-mentioned.The carrier frequency of described preset sound accompaniment standard can be identical or different, each television channel is by the carrier frequency corresponding to preset sound accompaniment standard of configuration, export the audio signal of a plurality of different frequencies, for example, the carrier frequency of D, K standard is identical, is all 6.5KHZ, the carrier frequency of B, G standard is 5.5KHZ, if the preset sound accompaniment standard of the current configuration of television channel is D, this television channel, by carrier frequency 6.5KHZ, is exported the audio signal (audio signals of 2KHZ, 2.5KHZ or 3KHZ etc.) of a plurality of different frequencies.When the automatic channel search instruction that receives user, TV carries out tuning operation automatically, or when the manual tuning instruction that receives user, each tuning instruction according to receiving, searches corresponding television channel.After television channel automatic search finishes, or according to each manual tuning instruction of user, searched for after television channel, if while only searching a television channel, the channel this being searched is play, or, when searching a plurality of television channel, select one by one the television channel search to play, and configure one by one preset sound accompaniment standard for the television channel of current broadcasting.When a television channel of selecting to search is play, for the television channel of current broadcasting configures a preset sound accompaniment standard or the identical a plurality of sound accompaniment standards of carrier frequency.In other embodiments of the invention, in order to make user can watch timely searched television channel, when the television channel searching is play for the first time, it is just this television channel configuration sound accompaniment standard, avoid after all television channel search finish, for each television channel configuration sound accompaniment standard searching, and affect user, watch the television channel searching one by one.

Described magnitude computation module 20, for after being a preset sound accompaniment standard of television channel configuration of current broadcasting, obtain for the first time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time; And

In the present embodiment, in processing module 10, for the television channel of current broadcasting, configure after the preset sound accompaniment standard that one or more carrier frequency is identical, the television channel of this current broadcasting is by the carrier frequency of the preset sound accompaniment standard of configuration, export the audio signal of a plurality of different frequencies, obtain for the first time the audio signal of predeterminated frequency of television channel output of this current broadcasting (from the carrier frequency corresponding to preset sound accompaniment standard of the television channel configuration of this current broadcasting, in the audio signal of a plurality of different frequencies of output, determine the audio signal of predeterminated frequency, the audio signal of the television channel output of current broadcasting is simulated audio signal), each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time.Described predeterminated frequency is preferably 2KHZ, can also be also any suitable frequency that the users such as 1.5KHZ or 2.5KHZ arrange in advance.Described the first Preset Time is preferably 5 milliseconds, can also be also the time interval that any suitable users such as 6 milliseconds or 7 milliseconds arrange in advance.The cycle of 2KHz simulated audio signal is 0.5 millisecond, each crest value in each cycle within from 0 to 5 millisecond is respectively a0, a1 ... a9, if just in time start to obtain from crest, can get a 11st crest value A10, calculate all crest values that obtain for the first time and obtain mean value a.When obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time, and describedly when obtaining described crest value for the first time, rise, rise when having obtained for the first time in the first Preset Time all crest values.Described the second Preset Time is preferably 500 milliseconds, can also be also the time interval that any suitable users such as 400 milliseconds or 600 milliseconds arrange in advance.After the b of all crest values that calculate the mean value a of all crest values that obtain for the first time and obtain for the second time, a and b are analyzed, to determine whether a equals b.

Described sound accompaniment arranges module 30, if be not equal to b for a, configures the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting; Or if a equals b, the television channel that processing module is this current broadcasting configures the preset sound accompaniment standard that another does not configure, and calculates a and b by magnitude computation module, until all preset sound accompaniment standard configurations are complete.

In the present embodiment, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting (after the sound accompaniment standard configuration successful of television channel that is successfully this current broadcasting, no longer configure again sound accompaniment standard for the television channel of this current broadcasting, but successfully configuring after sound accompaniment standard for the television channel of this current broadcasting, when playing the television channel of this sound accompaniment standard configuration successful, directly output sound accompaniment), play the next television channel that does not configure sound accompaniment standard, for the television channel of current broadcasting configures preset sound accompaniment standard one by one, and calculate a and b by magnitude computation module 20, to identify the sound accompaniment standard of the next television channel that does not configure sound accompaniment standard and by sound accompaniment, module 30 to be set, arrange, the television channel that does not configure sound accompaniment standard for the next one configures sound accompaniment standard, if a equals b, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, and calculate a and b by magnitude computation module 20, until all preset sound accompaniment standard configurations are complete.

In the present embodiment, the process that the television channel that described processing module 10 is selected to search is one by one play is: according to the 3rd Preset Time interval, select one by one the television channel searching to play; Or select one by one the television channel searching to play, when the television channel configuration successful sound accompaniment standard of current broadcasting, select another television channel of playing to play, or, when the television channel of current broadcasting and all preset sound accompaniment standard configuration failure, select another television channel of playing to play.Described the 3rd Preset Time interval is greater than the second Preset Time and two the first Preset Time sums, and described the 3rd Preset Time interval is preferably 510 milliseconds, take to guarantee the television channel configuration sound accompaniment standard that enough time is current broadcasting.

As shown in figure 10, be the functional block diagram of the second embodiment of the Lookup protocol device of sound accompaniment standard of the present invention.This device also comprises modular converter 40,

Described processing module 10, for after being a preset sound accompaniment standard of television channel configuration of current broadcasting, carries out filtering processing by the audio signal of the TV output of this current broadcasting;

Described modular converter 40, is converted to digital audio and video signals for the simulated audio signal after filtering is processed, and in the digital audio and video signals from transforming, determines the audio signal of predeterminated frequency;

Described magnitude computation module 30, for obtaining definite audio signal each crest value in the first Preset Time, and calculates the mean value a of all crest values that obtain for the first time.

In the present embodiment, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, with reference to figure 5, U1 is the tuner chip si2176 that Silicon lab produces, U5 is operational amplifier, U5 and C2, C3, C4, R3, R4, R5 forms the active band-pass filter that high pass low pass frequency selection circuit forms 2KHZ frequency, the unwanted high frequency low frequency signal of filtering, in order to avoid produce, disturb, after processing by filtering, the audio signal of unwanted high frequency or low frequency is filtered, obtain needing the audio signal of frequency, the Audio(simulated audio signal of tuner output) by C1, be coupled to after the high pass low pass filter processing of U5 composition, by C5, be coupled to the analogue audio frequency input of U2, 24 moduluses (A/D) transducer PCM1808 that U2Shi Texas Instrument produces, by A/D, change simulated audio signal is converted to digital audio and video signals, digital audio and video signals can better obtain the crest value of this audio signal, from the digital audio and video signals conversion, determine the audio signal of predeterminated frequency, obtain needing audio signal to be processed, obtain definite audio signal each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting, after U2 conversion, the digital audio and video signals (I2S) of output is exported to respectively U3(CPU) and U4(power amplifier), pass through I2C(SDA, SCL) control U4 and open volume, if a equals b, the television channel of current broadcasting is in mute state, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, by magnitude computation module 20, calculate a and b, until all preset sound accompaniment standard configurations are complete, until all preset sound accompaniment standard configurations are complete.

Further, described processing module 10, also carries out second wave pressure contracting for the simulated audio signal after filtering is processed, to obtain first wave simulation audio signal after second wave pressure contracting, and from first wave simulation audio signal obtaining, determine the audio signal of predeterminated frequency.

In the present embodiment, after being a preset sound accompaniment standard of television channel configuration of current broadcasting, the audio signal of the TV output of this current broadcasting is carried out to filtering processing, simulated audio signal after filtering is processed carries out second wave pressure contracting, to obtain first wave simulation audio signal after second wave pressure contracting, and from first wave simulation audio signal obtaining, determine the audio signal of predeterminated frequency, obtain definite audio signal each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time.For example, with reference to figure 7, U1 is the tuner chip si2176 that Silicon lab produces, U5 is operational amplifier, U5 and C2, C3, C4, R3, R4, R5 form high pass low pass frequency selection circuit and form 2K active band-pass filter, the high frequency low frequency signal that filtering does not need, in order to avoid produce, disturb, after processing by filtering, the audio signal of unwanted high frequency or low frequency is filtered, obtain needing the audio signal of frequency, the Audio(simulated audio signal of tuner output) by C1, be coupled to after the high pass low pass filter processing of U5 composition, through D1, second wave pressure contracting is obtained again to the upper half-wave of audio signal, from first ripple audio signal obtaining, determine the audio signal of predeterminated frequency, definite audio signal is exported to A/D input port, obtain definite audio signal each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time, when obtaining described crest value for the first time, rise, or, after the second Preset Time rising when calculating described mean value a, obtain for the second time the audio signal of predeterminated frequency of the television channel output of this current broadcasting, each crest value in the first Preset Time, and calculate the mean value b of all crest values that obtain for the second time, if a is not equal to b, configure the sound accompaniment standard that this preset sound accompaniment standard is the television channel of this current broadcasting, after U2 conversion, the digital audio and video signals (I2S) of output is exported to respectively U3(CPU) and U4(power amplifier), pass through I2C(SDA, SCL) control U4 and open volume, if a equals b, the television channel of current broadcasting is in mute state, for the television channel of this current broadcasting configures the preset sound accompaniment standard that another does not configure, by magnitude computation module 20, calculate a and b, until all preset sound accompaniment standard configurations are complete, described A/D input port can obtain the crest value of this definite audio signal, all crest values in the first Preset Time of this definite audio signal can be obtained for the first time and for the second time according to the audio signal obtaining, to identify the sound accompaniment standard of this television channel.

As shown in figure 11, be the functional block diagram of the 3rd embodiment of the Lookup protocol device of sound accompaniment standard of the present invention.The present invention also proposes a kind of Lookup protocol device of sound accompaniment standard, and this device comprises processing module 50, magnitude computation module 60, and sound accompaniment arranges module 70 and modular converter 80,

Described processing module 50, for when often searching a television channel, for the TV channel searching configures preset sound accompaniment standard one by one.

Described magnitude computation module 60, after the preset sound accompaniment standard of TV channel assignment for searching, obtain for the first time the audio signal of the predeterminated frequency of this current television channel output, each crest value in the first Preset Time, and calculate the mean value a of all crest values that obtain for the first time; And

Described sound accompaniment configuration module 70, if be not equal to b for a, configure the sound accompaniment standard that this preset sound accompaniment standard is this current television channel, or, if a equals b, processing module configures for this current television channel the preset sound accompaniment standard that another does not configure, and calculates a and b by magnitude computation module, until all preset sound accompaniment standard configurations are complete.

Processing module 50, magnitude computation module 60, sound accompaniment arranges the corresponding processing module 10 in Lookup protocol device first and second embodiment of module 70 and modular converter 80 and above-mentioned sound accompaniment standard, magnitude computation module 20, the implementation that sound accompaniment arranges module 30 and modular converter 40 first, second, and third embodiment is the same, at this, describes no longer one by one.

The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims

1. an automatic setting method for sound accompaniment standard, is characterized in that, the method comprising the steps of:

2. the automatic setting method of sound accompaniment standard according to claim 1, is characterized in that, the step that the described one by one television channel that selection searches is play comprises:

3. the automatic setting method of sound accompaniment standard according to claim 1, is characterized in that, described step B comprises:

4. the automatic setting method of sound accompaniment standard according to claim 3, is characterized in that, described step B2 replaces with:

5. an automatic setting method for sound accompaniment standard, is characterized in that, the method comprising the steps of:

6. a Lookup protocol device for sound accompaniment standard, is characterized in that, this device comprises:

7. the Lookup protocol device of sound accompaniment standard according to claim 6, is characterized in that,

Described processing module, for according to the 3rd Preset Time interval, selects the television channel searching to play one by one; Or

8. the Lookup protocol device of sound accompaniment standard according to claim 6, is characterized in that, this device also comprises modular converter,

9. the Lookup protocol device of sound accompaniment standard according to claim 8, is characterized in that,

Described processing module, also carries out second wave pressure contracting for the simulated audio signal after filtering is processed, and to obtain first wave simulation audio signal after second wave pressure contracting, and from first wave simulation audio signal obtaining, determines the audio signal of predeterminated frequency.

10. a Lookup protocol device for sound accompaniment standard, is characterized in that, this device comprises: