CN202535467U - Television receiver - Google Patents

Abstract

The utility model discloses a television receiver which comprises an audio processor and an audio regulator. A volume curve fitting mode for the television receiver is confirmed to be a Bezier curve fitting mode. A volume curve indicates the corresponding relationship between volume input value and volume output value. The volume input value is volume logic value input by a user, and the volume output value is logic value controlled by the decibel of volume output by the television receiver. The audio regulator is coupled with the audio processor and is used to carry out volume curve adjustments of the television receiver according to the certain fitting mode. The television receiver can improve adjusting efficiency of the volume curve at the time of the volume curve adjustments, reduce station time in volume curve adjusting stage, and improve flexibility of the volume curve adjustments.

Description

Television receiver

Technical field

The utility model relates to TV technology, relates in particular to television receiver.

Background technology

Television receiver is the terminal equipment of received tv broadcast signal, with showing after cable TV signal or the wireless television signal reception decoding and broadcasting, is called for short TV.The volume regulative mode of television receiver employing at present is the volume curve that before dispatching from the factory, fixedly installs a manufacturer's standard; The indication of this volume curve is the corresponding relation between volume input value and the volume output valve in the television sound volume adjustment process; It generally is non-linear curve; Volume input value wherein is the volume logical value of in television sound volume output, manually being imported by the user, and the volume output valve is the logical value of the volume decibel control of the actual output of television receiver in television sound volume output.At present this volume curve is a factory according to the volume input value of standard setting and the corresponding relation between the volume output valve voluntarily.Such as: when the user is adjusted to volume a certain volume input value, export the volume of a certain volume output valve; When the user is adjusted to another volume input value with volume, export the volume of another volume output valve.Before the actual tv receiver dispatched from the factory, factory need adjust and set to meet the requirement of dispatching from the factory the volume curve of television receiver.

In fact; The volume curve fit mode that present television receiver manufacturer takes is generally the fitting a straight line mode; In the production process of television receiver; Require to satisfy between volume input value and the volume output valve a kind of functional relation of dullness, when given relation can not be expressed with analytic function, need approach Control Parameter.In existing approach method, usually use look-up method, fitting effect is higher, but can not control flexibly, and this just need carry out repeated segmentation to tabulation.

Suppose the scope of volume input value: i ∈ [I _(min), I _(max)], I wherein _(min)And I _(max)Be respectively the minimum value and the maximum of volume input value; The scope of volume output valve: c ∈ [C _(min), C _(max)], C wherein _(min)And C _(max)Be respectively the minimum value and the maximum of volume output valve.

Because people's sense of hearing isoresponse curve is a nonlinear curve, and different people has different auditory properties curves, so, as shown in Figure 1, the fitting a straight line mode that often adopts on the engineering, set some input point sets at input:

CX _(i)∈{I _(min),I _(min+1),I _(min+2)，...，I _(max)}

Set some control point sets at output:

CY _(i)∈{C _(min),C _(min+1),C _(min+2),...,C _(max)}

i∈{min,min+1,...,max}

And have: Y=K _(i)X+B _(i), K wherein _(i)And B _(i)By control point set CX _(i)And CY _(i)Solve.

Can find out that by following formula utilization fitting a straight line mode must keep and find the solution K in main memory _(i)And B _(i)Control point set, and, if plan to change the shape of volume curve, must move all control vertexs, be not easy to revise, make the efficient of volume curve adjustment lower, flexibility is not high.

The utility model content

The utility model embodiment provides a kind of television receiver, and in order to the efficient and the flexibility of the volume curve adjustment that promotes television receiver, this television receiver comprises:

Audio process is used for the match mode of the volume curve of television receiver is confirmed as: Bezier match mode; Corresponding relation between said volume curve indication volume input value and the volume output valve, said volume input value is the volume logical value of user's input, said volume output valve is the logical value of the volume decibel control of television receiver output;

Tone control is coupled to audio process, is used for carrying out the adjusting of television receiver volume curve according to the match mode of confirming.

Preferable, said tone control comprises:

The curve controlled device is used for confirming the control vertex of Bezier;

The curve adjustment device is coupled to the curve controlled device, is used for regulating Bezier according to said control vertex.

Preferable, said curve controlled implement body is used for:

Suppose the position vector P of given space n+1 point _i(i=0,1,2 ..., n), there is the control vertex need be from P ₀(x ₀, y ₀) to P _n(x _n, y _n) have a Bezier to regulate x ₀, x _nBe volume input value, y ₀, y _nBe the volume output valve, then select control vertex P ₁~ P _N-1Regulate Bezier:

Said curve adjustment implement body is used for:

Make parameter of curve

Interpolation formula according to each point coordinates on the Bezier

Confirm the y component of each point coordinates interpolation formula on the Bezier

P _iConstitute the characteristic polygon of Bezier, B _{I, n}(t) be n Bornstein basic function.

The television receiver of the utility model embodiment is confirmed as the match mode of the volume curve of television receiver by audio process: Bezier match mode; Corresponding relation between said volume curve indication volume input value and the volume output valve, said volume input value is the volume logical value of user's input, said volume output valve is the logical value of the volume decibel control of television receiver output; Tone control is according to the match mode of confirming; Carry out the adjusting of television receiver volume curve, thereby when adjustment volume curve, promote the adjusting efficient of volume curve; Minimizing promotes the flexibility of volume curve adjustment in the station time of volume curve adjustment link.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.In the accompanying drawings:

Fig. 1 is the fitting a straight line mode sketch map of television receiver volume curve in the background technology;

Fig. 2 is the structural representation of television receiver among the utility model embodiment;

Fig. 3 is the structural representation of an instantiation of television receiver among the utility model embodiment;

Fig. 4 is a Bezier example schematic among the utility model embodiment;

Fig. 5 be Bezier among the utility model embodiment shape and control vertex and parameter concern sketch map;

Fig. 6 is the process chart of the volume curve adjustment method of television receiver among the utility model embodiment.

Embodiment

For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer, the utility model embodiment is explained further details below in conjunction with accompanying drawing.At this, illustrative examples of the utility model and explanation thereof are used to explain the utility model, but not as the qualification to the utility model.

The inventor is after conditions such as bulk property that takes into full account television receiver volume curve and fairing; Propose a kind of television receiver at the utility model embodiment, make approximating curve both satisfy the certain precision requirement, higher efficient is arranged again; Utilize the least possible segmentation control point; It is suitable to satisfy the curve relative light, approaches effect to obtain preferably volume, satisfies certain actual needs.

As shown in Figure 2, the television receiver among the utility model embodiment can comprise:

Audio process 201 is used for the match mode of the volume curve of television receiver is confirmed as: Bezier match mode; Corresponding relation between said volume curve indication volume input value and the volume output valve, said volume input value is the volume logical value of user's input, said volume output valve is the logical value of the volume decibel control of television receiver output;

Tone control 202 is coupled to audio process 201, is used for carrying out the adjusting of television receiver volume curve according to the match mode of confirming.

Can learn by structure shown in Figure 2; The television receiver of the utility model embodiment when adjusting the volume curve of television receiver, does not adopt traditional fitting a straight line mode; And employing Bezier match mode; Promote the adjusting efficient of volume curve, reduce, promote the flexibility of volume curve adjustment in the station time of volume curve adjustment link.

Specify below when the match mode of the volume curve of television receiver confirmed as Bezier match mode, carry out the adjusting of television receiver volume curve according to Bezier match mode.

As shown in Figure 3, among the embodiment, said tone control 202 can comprise:

Curve controlled device 301 is used for confirming the control vertex of Bezier;

Curve adjustment device 302 is coupled to curve controlled device 301, is used for regulating Bezier according to said control vertex.

Among the embodiment, said curve controlled device 301 specifically can be used for:

Suppose the position vector P of given space n+1 point _i(i=0,1,2 ..., n), there is the control vertex need be from P ₀(x ₀, y ₀) to P _n(x _n, y _n) have a Bezier to regulate x ₀, x _nBe volume input value, y ₀, y _nBe the volume output valve, then select control vertex P ₁~ P _N-1Regulate Bezier:

Said curve adjustment device 302 specifically can be used for:

Make parameter of curve

Interpolation formula according to each point coordinates on the Bezier

Confirm the y component of each point coordinates interpolation formula on the Bezier

P _iConstitute the characteristic polygon of Bezier, B _{I, n}(t) be n Bornstein basic function.

Concrete, $B_{i,n}\left(t\right)=C_n^i{t}^i{(1-t)}^{n-i}=\frac{n!}{i!(n-i)!}{t}^i{(1-t)}^{n-i}(i=\mathrm{0,1},...,n),$ The instance of Bezier is as shown in Figure 4.Suppose P ₀Point representative (CX _(min), CY _(min)), P ₃Point representative (CX _(max), CY _(max)) then can learn P ₀To P ₃Connect by a curve, and determine the point of this curve shape to be merely limited control vertex, if reasonably determine the control vertex of curve, then can make curve become a monotonous curve, the point on the curve with respect to control vertex

Can find out that by this formula the factor of decision p (t) has following: n, t, i; Wherein:

N is the number of times of curve, and number of times is high more, and the curve shape of expression is more complicated;

T is the parameter of curve;

I is an internal circulating load, from 1 until n.

The relation of the shape of Bezier and control vertex and parameter is as shown in Figure 5.Can learn that by Fig. 5 defining the relative curve preferably of a strip only needs control vertex seldom to accomplish.Might as well suppose to have the control vertex need be so from P ₀(x ₀, y ₀) to P _n(x _n, y _n) have a Bezier to regulate x ₀, x _nBe volume input value, y ₀, y _nBe the volume output valve, select control vertex P so ₁~ P _N-1Regulate this Bezier, make parameter of curve

Interpolation formula according to each point coordinates on the Bezier

Confirm the y component of each point coordinates interpolation formula on the Bezier $y\left(t\right)=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{y}_i{B}_{i,n}\left(t\right)=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{y}_i{B}_{i,n}\left(\frac{{x-x}_0}{x_n-x_0}\right),t=\left[\mathrm{0,1}\right],$ Be the theoretical expression of match formula, in fact, this expression formula can be released by the de casteljau algorithm of classics.

When factory carries out the match adjusting to the volume curve; Only need the pulling control vertex to make curve meet factory preset sense of hearing shape; When volume is regulated in practical application, calculate required volume output valve according to de casteljau algorithm by Control Parameter and get final product then.

Can know by the foregoing description; In plant produced, adopt Bezier match mode to carry out match control to the volume curve, when the user of factory regulated the volume curve, the curve that script needs the adjusting multiple spot just can define completion only needed to regulate one or two control vertex now and can accomplish; Promoted the flexibility of volume curve adjustment; Promoted operating efficiency, reduced the time of factory's station, made the volume curve reach the demand of dispatching from the factory fast the volume curve adjustment.

As shown in Figure 6, the volume curve adjustment method of television receiver can comprise among the utility model embodiment:

Step 601, the match mode of the volume curve of television receiver is confirmed as: Bezier match mode; Corresponding relation between said volume curve indication volume input value and the volume output valve, said volume input value is the volume logical value of user's input, said volume output valve is the logical value of the volume decibel control of television receiver output;

The match mode that step 602, basis are confirmed is carried out the adjusting of television receiver volume curve.

During practical implementation, the match mode that said basis is confirmed is carried out the adjusting of television receiver volume curve, can comprise:

Confirm the control vertex of Bezier;

Regulate Bezier according to said control vertex.

During practical implementation, confirm the control vertex of Bezier; Regulate Bezier according to said control vertex, can comprise:

Suppose the position vector P of given space n+1 point _i(i=0,1,2 ..., n), there is the control vertex need be from P ₀(x ₀, y ₀) to P _n(x _n, y _n) have a Bezier to regulate x ₀, x _nBe volume input value, y ₀, y _nBe the volume output valve, then select control vertex P ₁~ P _N-1Regulate Bezier:

Make parameter of curve

Interpolation formula according to each point coordinates on the Bezier

Confirm the y component of each point coordinates interpolation formula on the Bezier

P _iConstitute the characteristic polygon of Bezier, B _{O, n}(t) be n Bornstein basic function.

In sum, the television receiver of the utility model embodiment is confirmed as the match mode of the volume curve of television receiver by audio process: Bezier match mode; Corresponding relation between said volume curve indication volume input value and the volume output valve, said volume input value is the volume logical value of user's input, said volume output valve is the logical value of the volume decibel control of television receiver output; Tone control is according to the match mode of confirming; Carry out the adjusting of television receiver volume curve, thereby when adjustment volume curve, promote the adjusting efficient of volume curve; Minimizing promotes the flexibility of volume curve adjustment in the station time of volume curve adjustment link.

Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; And be not used in the protection range that limits the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.

Claims (3)

1. a television receiver is characterized in that, comprising:

Audio process is used for the match mode of the volume curve of television receiver is confirmed as: Bezier match mode; Corresponding relation between said volume curve indication volume input value and the volume output valve, said volume input value is the volume logical value of user's input, said volume output valve is the logical value of the volume decibel control of television receiver output;

Tone control is coupled to audio process, is used for carrying out the adjusting of television receiver volume curve according to the match mode of confirming.

2. television receiver as claimed in claim 1 is characterized in that, said tone control comprises:

The curve controlled device is used for confirming the control vertex of Bezier;

The curve adjustment device is coupled to the curve controlled device, is used for regulating Bezier according to said control vertex.

3. television receiver as claimed in claim 2 is characterized in that, said curve controlled implement body is used for:

Suppose the position vector P of given space n+1 point _i(i=0,1,2 ..., n), there is the control vertex need be from P ₀(x ₀, y ₀) to P _n(x _n, y _n) have a Bezier to regulate x ₀, x _nBe volume input value, y ₀, y _nBe the volume output valve, then select control vertex P ₁~ P _N-1Regulate Bezier:

Said curve adjustment implement body is used for:

Make parameter of curve

Interpolation formula according to each point coordinates on the Bezier

Confirm the y component of each point coordinates interpolation formula on the Bezier P _iConstitute the characteristic polygon of Bezier, B _{I, n}(t) be n Bornstein basic function.

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