JP2007306520A - Signal converter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adjust images and sounds, or the like in video equipment in accordance with user's preference. <P>SOLUTION: An evaluation history management part 220 renews a continuity status preserved in a continuity status preserving part 120 and a continuity index preserved in a continuity index preserving part 130 based on a latest evaluation value received by an evaluation input reception part 210 and a previous evaluation value preserved in an evaluation value preserving part 110. An adjustment quantity renewal part 240 renews an adjustment quantity preserved in an adjustment quantity preserving part 140 based on the continuity status and the continuity index. A proposed parameter renewal part 250 renews a proposed parameter preserved in a proposed parameter preserving part 150 based on the continuity status, the continuity index and the adjustment quantity. The proposed image quality presenting part 260 converts an image quality signals by a signal line 201 based on the proposed parameter and presents the image of a proposed image quality by a signal line 209. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a signal conversion device, and more particularly to a signal conversion device that performs conversion processing according to user preferences, a processing method thereof, and a program that causes a computer to execute the method.

2. Description of the Related Art Conventionally, in a video apparatus such as a television receiver or a DVD (Digital Versatile Disk) playback apparatus, items that can be adjusted in the apparatus are provided on a menu screen or the like, and a user adjusts items he or she wants to adjust accordingly. It has become. For example, an image display system that displays each adjustment item as a menu has been proposed (see, for example, Patent Document 1).
JP 2002-057959 A (FIG. 1)

  However, adjustment items in the video apparatus are diverse and affect each other. For example, the noise reduction adjustment has a side effect that the higher the noise reduction value, the stronger the noise reduction effect, but the inferior detail reproduction capability and blurring of the image. Also, the sharpness adjustment has a side effect that, as the sharpness value is set higher, the detail reproducibility improves while noise is enhanced. In this way, noise reduction and sharpness have characteristics that have reciprocal effects, and when these two adjustment items are adjusted by the same amount, their side effects and effects cancel each other. Therefore, when each adjustment item is adjusted individually, it will fit into the offset points one after another, making it difficult to stabilize in a state that generally matches the user's preference.

  On the other hand, in order to eliminate the complexity of the operation due to the influence between the adjustment items, a method of providing a preset mode in advance and allowing the user to select from them can be considered. However, in that case, the room for the user's selection is extremely limited, and it is difficult to match the user's preference.

  Accordingly, an object of the present invention is to make adjustments that match user preferences for images, sounds, and the like in a video apparatus.

  The present invention has been made to solve the above problems, and a first aspect of the present invention is a conversion means for converting an input signal into an output signal in accordance with a parameter set in time series, and for the output signal. Evaluation input receiving means for receiving input of a positive or negative evaluation value, evaluation history management means for generating the degree and state of continuity of positive or negative evaluation value based on the evaluation value history, and the evaluation value And a parameter generation unit that generates the next parameter based on the degree and state of continuity of the signal. Thereby, the parameter for signal conversion is set according to the degree and state of continuity of the evaluation value, and the signal is converted so as to match the history of the evaluation value.

  In the first aspect, the parameters may include at least two types of parameters for the conversion. By adjusting a plurality of types of parameters at the same time, the signal is converted by utilizing the interaction between the parameters.

  In this first aspect, the previous evaluation value holding means for holding the evaluation value for the output signal based on the immediately preceding parameter as the previous evaluation value, and the continuity for holding the degree of continuity of the evaluation value as a continuity index. Sex index holding means and continuity state holding means for holding the continuity state of the evaluation value as a continuity state, wherein the evaluation history management means receives the evaluation value received by the evaluation input receiving means, and The continuity index holding unit and the continuity state holding unit may be updated based on the evaluation value held in the previous evaluation value holding unit. This brings about the effect that the history of evaluation values is reflected in the continuity index and the continuity state.

  The first aspect further includes a previous parameter holding unit that holds the immediately previous parameter as the previous parameter, and a previous adjustment amount holding unit that holds the adjustment amount at the time of generating the previous parameter as the previous adjustment amount. The parameter generation means is held in the continuity index held in the continuity index holding means, the continuity state held in the continuity state holding means, and the previous adjustment amount holding means. An adjustment amount calculating means for calculating an adjustment amount for generating the next parameter based on the previous adjustment amount, the continuity state held in the continuity state holding means, and the above-mentioned hold in the previous parameter holding means Parameter calculating means for calculating the next parameter based on the previous parameter and the adjustment amount calculated by the adjustment amount calculating means; It may be provided. This brings about the effect that the continuity index and the continuity state are reflected in the parameter calculation.

  In the first aspect, the adjustment amount calculation means may calculate the adjustment amount such that the adjustment amount increases as the continuity indicated by the continuity index increases. As a result, the higher the continuity, the larger the parameter is changed.

  In this first aspect, the parameter calculation means adds or subtracts the adjustment amount in the same direction as the increase / decrease of the previous parameter when indicating that the continuity state is continuous. When it is indicated that the sex state is not continuous, the next parameter may be calculated by adding or subtracting the adjustment amount in the direction opposite to the increase / decrease of the previous parameter. Thereby, when the evaluation input is continuous, the parameter is changed in the same direction, and when it is not continuous, the parameter is changed in the reverse direction.

  According to a second aspect of the present invention, there is provided an evaluation input for accepting an input of an affirmative or negative evaluation value for the output signal in a signal converter that converts an input signal into an output signal according to a parameter set in time series. An acceptance history, an evaluation history management procedure for generating the degree and state of affirmation or negative continuity of the evaluation value based on the history of the evaluation value, and the following based on the degree and state of continuity of the evaluation value A signal conversion method comprising a parameter generation procedure for generating a parameter, or a program for causing a computer to execute these procedures. Thereby, the parameter for signal conversion is set according to the degree and state of continuity of the evaluation value, and the signal is converted so as to match the history of the evaluation value.

  According to the present invention, in the video apparatus, by repeating the adjustment based on the evaluation history by the user, it is possible to achieve an excellent effect that it can be stabilized in a state that matches the user's preference.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration example of a broadcast receiving apparatus 300 as a specific example of a video apparatus according to an embodiment of the present invention. The broadcast receiving apparatus 300 includes a processor 310, a memory 320, a flash memory 330, a tuner 340, a demodulation unit 350, a demultiplexer 360, an audio decoding unit 367, an image decoding unit 368, and a digital-analog ( D / A) A conversion unit 370, an audio output unit 377, an image output unit 378, and an interface 390 are provided. These are connected by a bus 380. In addition, an antenna 309 is connected to the tuner 340 as an external device.

  The processor 310 controls the operation of the entire broadcast receiving apparatus 300. The memory 320 corresponds to the main memory of the processor 310, and stores programs and the like that operate on the processor 310. The flash memory 330 is a non-volatile recording medium, and is used to hold information that is needed again after the broadcast receiver 300 is turned off. Therefore, the contents of the flash memory 330 are transferred to the memory 320 when the broadcast receiving device 300 is turned on.

  The tuner 340 detects a signal of a predetermined channel from the broadcast signal supplied from the antenna 309 under the control of the processor 310 and supplies it to the demodulator 350. The broadcast signal may be a terrestrial wave or a satellite signal by a broadcast satellite (BS) broadcast or a communication satellite (CS) broadcast. The demodulator 350 demodulates the broadcast signal from the tuner 340 under the control of the processor 310 to extract data and supply it to the demultiplexer 360. In the case of digital broadcasting, for example, digital modulation is performed by phase modulation (PSK) or the like, and the demodulation unit 350 extracts data from the digitally modulated signal.

  The demultiplexer 360 separates the data from the demodulation unit 350 into audio data and image data, and supplies them to the audio decoding unit 367 and the image decoding unit 368, respectively. In the case of digital broadcasting, the demultiplexer 360 functions as, for example, a digital data transport decoder, and converts an MPEG (Moving Picture Experts Group) -2 transport stream into an audio stream as audio data and a video stream as video data. To separate. In this case, the demultiplexer 360 separates program specification information (PSI) and program arrangement information (SI) in the transport stream.

  The audio decoding unit 367 and the image decoding unit 368 decode the audio data and image data supplied from the demultiplexer 360, respectively, and supply them to the D / A conversion unit 370. For example, an MPEG-encoded audio stream and image stream are MPEG-decoded into audio and image signals.

  The D / A conversion unit 370 converts the digital signal supplied from the audio decoding unit 367 and the image decoding unit 368 into an analog signal and supplies the analog signal to the audio output unit 377 and the image output unit 378. The image signal output from the image output unit 378 is supplied to a display (not shown). The audio signal output from the audio output unit 377 is supplied to a speaker (not shown).

  The interface 390 connects an operation input from the outside to the bus 380 inside the broadcast receiving apparatus 300. As this interface 390, for example, a receiver of a remote controller can be provided.

  FIG. 2 is a diagram illustrating a configuration example of the image conversion function according to the embodiment of the present invention. Here, the evaluation value holding unit 110, the continuity state holding unit 120, the continuity index holding unit 130, the adjustment amount holding unit 140, and the proposed parameter holding unit are assumed to hold data necessary for image conversion processing. 150. In addition, as a function for realizing the image conversion processing, an evaluation input receiving unit 210, an evaluation history management unit 220, an adjustment amount update unit 240, a proposal parameter update unit 250, and a suggested image quality presentation unit 260 are provided.

  The evaluation input receiving unit 210 receives an evaluation input from the user regarding the image quality of the currently displayed image. The currently displayed image is displayed based on a proposal parameter described later. For the image based on the proposed parameter, the user inputs whether the image quality of the image is favorite (positive evaluation) or not preferable (negative evaluation). This evaluation input is received by the evaluation input receiving unit 210 via the signal line 202.

  The evaluation value holding unit 110 holds the value of the evaluation input from the previous user. Proposed parameters are set in time series, and the displayed image also changes according to the proposed parameters. Each time the user performs an evaluation input for the image quality of the image. That is, the evaluation value holding unit 110 holds the previous evaluation input value, and the evaluation input receiving unit 210 receives the current evaluation input value.

  The evaluation history management unit 220 compares the value of the previous evaluation input held in the evaluation value holding unit 110 with the value of the current evaluation input supplied from the evaluation input receiving unit 210, and compares the values of these evaluation inputs. Change is detected. Then, according to the change history, the evaluation history management unit 220 updates the continuity state held in the continuity state holding unit 120 and the continuity index held in the continuity index holding unit 130 as follows. And manage.

  The continuity state holding unit 120 holds a continuity state indicating whether or not the evaluation input history is continuous. For example, if the value of the previous evaluation input is “positive evaluation” and the value of the previous evaluation input is also “positive evaluation”, it is “continuous”, and similarly, the value of the previous evaluation input is “negative evaluation”. If the value of the previous evaluation input is also “negative evaluation”, this is also “continuous state”. On the other hand, if the value of the previous evaluation input is “positive evaluation” and the value of the previous evaluation input is “negative evaluation”, it is “discontinuous”, and similarly, the value of the previous evaluation input is “negative evaluation”. If the value of the previous evaluation input is “affirmative evaluation”, it is “non-continuous state”.

  The continuity index holding unit 130 holds a continuity index m indicating the degree of continuity of the evaluation input history. This continuity index indicates the frequency at which the same evaluation is continuously input in the “continuous state”, and indicates the frequency at which the inversion of the evaluation is repeated in the “non-continuous state”. Negative and the latter sign positive. In other words, the continuity index increases when the inversion of the evaluation input is repeated, and the continuity index decreases when the same evaluation is continuously input.

  The proposal parameter holding unit 150 holds the previous and previous proposal parameters. The adjustment amount holding unit 140 holds the adjustment amount used for calculating the previous proposed parameter. This adjustment amount is an absolute value of “0” or more, and the sign of the adjustment amount when calculating the proposed parameter is the continuity state held in the continuity state holding unit 120 and the proposed parameter holding unit, as will be described later. It is determined based on the previous and previous proposal parameters held in 150.

  The adjustment amount update unit 240 determines the adjustment amount held in the adjustment amount holding unit 140 based on the continuity state held in the continuity state holding unit 120 and the continuity index held in the continuity index holding unit 130. It is to be updated. The adjustment amount is updated to increase in the “continuous state” and is updated to decrease in the “non-continuous state”.

For example, if the previous adjustment amount is Δ _n−1 , the current adjustment amount Δ _n is Δ _n ← Δ _n−1 × (1 + δ _m ) in the “continuous state”.
In the “non-continuous state”, Δ _n ← Δ _n-1 × (1-δ _m )
Is calculated by Here, δ _m is a value proportional to the continuity index m,
δ _m <δ _m-1
Meet. That is, δ _m shows a larger value as the continuity index m is smaller.

  The proposed parameter update unit 250 includes the continuity state held in the continuity state holding unit 120, the previous and previous proposal parameters held in the proposal parameter holding unit 150, and the adjustment amount held in the adjustment amount holding unit 140. Based on the above, the proposed parameter held in the proposed parameter holding unit 150 is updated. In the “continuous state”, the proposed parameter adds or subtracts the adjustment amount in the same direction as the increase / decrease direction of the proposed parameter. .

For example, if the previous proposed parameter is V _n-1 and the previous proposed parameter is V _n-2 , the current proposed parameter V _n increases in the “continuous state” (V _n-1 > V _{n -2} ): V _n ← V _n-1 + Δ _n
When the proposed parameter decreases (V _n-1 <V _n-2 ): V _n ← V _n-1 −Δ _n
In the “non-continuous state”, when the proposed parameter increases (V _n-1 > V _n-2 ): V _n ← V _n-1 −Δ _n
When the proposed parameter decreases (V _n-1 <V _n-2 ): V _n ← V _n-1 + Δ _n
It becomes. If there is no change in the previous and previous proposal parameters, they may be classified as either.

  Here, the proposed parameter can include a plurality of types of parameters. Examples of images can include brightness, contrast, sharpness, comma correction, hue, noise reduction, and the like. In this case, each of the plurality of types of parameters can be adjusted by different adjustment amounts. Specific examples will be described later.

  The proposed image quality presentation unit 260 converts the image signal supplied via the signal line 201 based on the proposal parameter updated by the proposal parameter update unit 250 and outputs the converted image signal to the signal line 209. Thereby, an image having an image quality according to the proposed parameter is presented to the user.

  These image conversion functions can be realized by the processor 310 in FIG. An evaluation input by the user is supplied to the processor 310 via the interface 390, and an image having an image quality according to the proposed parameter is output from the image output unit 378.

  FIG. 3 is a diagram showing an example of the transition of the continuity state in the embodiment of the present invention. The continuity state held in the continuity state holding unit 120 indicates the continuous state 10 if the evaluation input history by the user is continuous, and indicates the discontinuous state 20 if the history is not continuous.

  The continuous state 10 is further classified into a stable continuous state 11 and a quasi-continuous state 12. The quasi-continuous state 12 is a state just transitioned from the discontinuous state 20. The stable continuous state 11 is a state in which the same evaluation input is made continuously from the quasi-continuous state 12. Therefore, when continuously in the continuous state 10, the stable continuous state 11 is obtained.

  The discontinuous state 20 is further classified into a stable discontinuous state 21 and a quasi-discontinuous state 22. The quasi-discontinuous state 22 is a state just transitioned from the continuous state 10. The stable discontinuous state 21 is a state in which different evaluation inputs are made continuously from the quasi-discontinuous state 22. Accordingly, when the discontinuous state 20 continues, the stable discontinuous state 21 is obtained.

  The continuity index m held in the continuity index holding unit 130 is updated according to the transition of the continuity state. When the same evaluation input is made continuously in the quasi-continuous state 12, a transition is made to the stable continuous state 11 and the continuity index m is decremented by “1”. On the other hand, when an evaluation input different from the previous time is input in the quasi-continuous state 12, the state transitions to the quasi-discontinuous state 22 and the continuity index m is incremented by “1”.

  When the same evaluation input is made continuously in the stable continuous state 11, the continuity index m is subtracted by “1” while taking the stable continuous state 11. On the other hand, when an evaluation input different from the previous time is input in the stable continuous state 11, the state transitions to the quasi-discontinuous state 22 and the continuity index m is reset to “0”.

  When an evaluation input different from the previous time is input in the quasi-discontinuous state 22, the state transitions to the stable discontinuous state 21 and the continuity index m is incremented by “1”. On the other hand, when the same evaluation input as the previous time is input in the quasi-discontinuous state 22, the state transitions to the quasi-continuous state 12 and the continuity index m is decremented by “1”.

  When an evaluation input different from the previous time is input in the stable discontinuous state 21, the continuity index m is incremented by “1” while taking the stable discontinuous state 21. On the other hand, when the same evaluation input as the previous time is input in the stable discontinuous state 21, the state transitions to the quasi-continuous state 12 and the continuity index m is reset to “0”.

  As described above, when the transition from the continuous state 10 to the discontinuous state 20 or from the discontinuous state 20 to the continuous state 10 is performed, the continuity index m is reset except for a temporary case. In the continuous state 10, the continuity index m is subtracted, and in the discontinuous state 20, the continuity index m is added. As a result, the continuity index m increases when the inversion of the evaluation input is repeated, and is updated so that the continuity index m decreases when the same evaluation is continuously input.

  FIG. 4 is a diagram showing a state of evaluation input in the embodiment of the present invention. On the screen of the broadcast receiving apparatus 300, for example, an image 301 based on the previous proposal parameter is displayed on the left side and an image 302 based on the current proposal parameter is displayed on the right side. The user evaluates whether or not the current image 302 matches the preference, and makes an affirmative or negative input using the remote controller 400.

  The remote controller 400 may be anything as long as an affirmative or negative evaluation input is possible. For example, the remote controller 400 may include an affirmative input button 401 and a negative input button 402 to facilitate evaluation input. it can.

  FIG. 5 is a diagram showing a specific example of evaluation input in the embodiment of the present invention. FIG. 5A shows a state in which the left image has already been positively evaluated and the right image is proposed as the next image. Here, when a positive evaluation input is made by the user, the previous affirmed image is displayed on the left side as shown in FIG. 5B, and the next proposed image is displayed on the right side.

  In the display of FIG. 5B, if a negative evaluation input is made by the user, the left image is maintained as it is as shown in FIG. 5C, and the next proposed image is displayed on the right side. Then, when a positive evaluation input is made by the user, an image that was previously affirmed is displayed on the left side as shown in FIG. Here, when the user stops the evaluation input, the image quality of the last affirmed image is adopted.

  FIG. 6 is a diagram showing a specific example of parameter adjustment in the embodiment of the present invention. Here, an example of simultaneously adjusting noise reduction and sharpness having reciprocal effects will be described. In FIG. 6, noise reduction is indicated by an alternate long and short dash line, and sharpness is indicated by a broken line.

  As an initial value, in event # 0, it is assumed that the maximum parameter value is set for noise reduction and the minimum parameter value is set for sharpness. Then, it is assumed that the user inputs a positive evaluation for the first proposed parameter. At this time, the continuity index m is “0”.

  As the next parameter, at event # 1, the noise reduction is adjusted to be slightly smaller than the maximum value, and the sharpness is adjusted to be slightly larger than the minimum value. Assume that a positive evaluation is input for this proposed parameter. As a result, the evaluation input of “affirmation” is continuous, and the continuity state becomes “continuous state”. Further, the continuity index m is subtracted from “0” to “−1”.

  Thereafter, as the “yes” evaluation input continues for the proposed parameter, the continuity index m decreases and the adjustment amount of the proposed parameter increases. Then, in event # 4, the evaluation input is inverted to “No”. As a result, the continuity state becomes “non-continuous state” and the continuity index m is reset to “0”.

  After that, the proposed parameters are reversed in the direction of increase / decrease, noise reduction increases and sharpness decreases. When the “No” evaluation input is continuously performed, the continuity state becomes “non-continuous state”, and the adjustment amount of the proposed parameter increases as the continuity index m decreases. Then, in event # 7, the evaluation input is inverted to “No”. As a result, the continuity state becomes “non-continuous state” and the continuity index m is reset to “0”.

  Thereafter, the evaluation input is repeatedly inverted until event # 11. As a result, the continuity index m increases and the noise reduction and sharpness adjustment amounts decrease. Then, in event # 12, an evaluation input of “affirmation” is made to be “continuous state”, and the continuity index m is reset to “0”.

  After that, a “no” evaluation input is made at event # 14, resulting in a “non-continuous state”, but since a “no” evaluation input continues until event # 16, a “continuous state” is entered. Then, after “Yes” evaluation input is performed from Event # 17 to Event 19, the evaluation input repeats “Negation” and “Yes” inversion after Event # 20. As a result, the continuity index m increases, and the noise reduction and sharpness adjustment amounts converge.

  Next, an image conversion operation of the broadcast receiving apparatus 300 in the embodiment of the present invention will be described with reference to the drawings.

  FIG. 7 is a diagram showing an example of the processing procedure of the image conversion operation in the embodiment of the present invention. First, the evaluation input receiving unit 210 receives an evaluation input by the user for the proposed suggested image quality (step S911). Then, in the evaluation history management unit 220, the continuity state held in the continuity state holding unit 120 based on the evaluation value by the current evaluation input and the previous evaluation value held in the evaluation value holding unit 110. Is updated (step S912), and the continuity index held in the continuity index holding unit 130 is updated (step S913). Also, the evaluation value based on the current evaluation input is stored in the evaluation value holding unit 110 (step S914).

  In the adjustment amount update unit 240, the adjustment amount held in the adjustment amount holding unit 140 is updated based on the continuity state and the continuity index (step S915). Further, the proposed parameter updating unit 250 updates the proposed parameters held in the proposed parameter holding unit 150 based on the continuity state, the continuity index, and the adjustment amount (step S916). Thereby, the proposed image quality presentation unit 260 presents an image based on the new proposed parameter (step S917).

  If the user is satisfied with the image quality and does not need the next proposal, the adjustment ends. If the next proposal is needed, the processing from step S911 is repeated (step S919).

  As described above, according to the embodiment of the present invention, the continuity state and the continuity index are updated according to the evaluation value history in the evaluation history management unit 220, and a proposal is made based on the continuity state and the continuity index. The parameter update unit 250 updates the proposed parameter and presents an image based on the proposed parameter, whereby the image quality can be adjusted according to the user's preference.

  In the embodiment of the present invention, the example of adjusting the image quality of the received image by the broadcast receiving apparatus 300 has been described. However, the present invention is not limited to this and can be applied to signal conversion in general. For example, parameters such as volume, left / right balance, and bass emphasis can be adjusted for voice to match the user's preference.

  Further, the embodiment of the present invention shows an example for embodying the present invention, and has a corresponding relationship with the invention specific matter in the claims as shown below, but is not limited thereto. However, various modifications can be made without departing from the scope of the present invention.

  That is, in claim 1, the conversion means corresponds to, for example, the suggested image quality presentation unit 260. An evaluation input receiving unit corresponds to the evaluation input receiving unit 210, for example. The evaluation history management means corresponds to the evaluation history management unit 220, for example. Parameter generation means corresponds to, for example, the adjustment amount update unit 240 and the proposed parameter update unit 250.

  Further, in claim 3, the previous evaluation value holding unit corresponds to, for example, the evaluation value holding unit 110. The continuity index holding means corresponds to the continuity index holding unit 130, for example. The continuity state holding unit corresponds to the continuity state holding unit 120, for example.

  Further, in claim 4, the previous parameter holding unit corresponds to, for example, the proposed parameter holding unit 150. The previous adjustment amount holding unit corresponds to the adjustment amount holding unit 140, for example. The adjustment amount calculation means corresponds to, for example, the adjustment amount update unit 240. Parameter calculation means corresponds to the proposed parameter update unit 250, for example.

  In claims 7 and 8, the evaluation input acceptance procedure corresponds to, for example, step S911. The evaluation history management procedure corresponds to, for example, steps S912 and S913. The parameter generation procedure corresponds to step S916, for example.

  The processing procedure described in the embodiment of the present invention may be regarded as a method having a series of these procedures, and a program for causing a computer to execute these series of procedures or a recording medium storing the program May be taken as

It is a figure which shows the structural example of the broadcast receiving apparatus 300 of one specific example of the video apparatus in embodiment of this invention. It is a figure which shows the example of 1 structure of the image conversion function in embodiment of this invention. It is a figure which shows an example of the transition of a continuity state in embodiment of this invention. It is a figure which shows the mode of the evaluation input in embodiment of this invention. It is a figure which shows the specific example of the evaluation input in embodiment of this invention. It is a figure which shows the specific example of parameter adjustment in embodiment of this invention. It is a figure which shows an example of the process sequence of the image conversion operation | movement in embodiment of this invention.

Explanation of symbols

110 Evaluation value holding unit 120 Continuity state holding unit 130 Continuity index holding unit 140 Adjustment amount holding unit 150 Proposed parameter holding unit 210 Evaluation input receiving unit 220 Evaluation history management unit 240 Adjustment amount updating unit 250 Proposed parameter updating unit 260 Proposed image quality Presentation unit 300 Broadcast receiving device 309 Antenna 310 Processor 320 Memory 330 Flash memory 340 Tuner 350 Demodulation unit 360 Demultiplexer 367 Audio decoding unit 368 Image decoding unit 370 Conversion unit 377 Audio output unit 378 Image output unit 380 Bus 390 Interface 400 Remote controller 401 Positive input button 402 Negative input button

Claims (8)

Conversion means for converting an input signal into an output signal in accordance with parameters set in time series;
Evaluation input receiving means for receiving an input of a positive or negative evaluation value for the output signal;
Evaluation history management means for generating a degree and a state of affirmative or negative continuity of the evaluation value based on the history of the evaluation value;
And a parameter generation unit configured to generate a next parameter based on a degree and a state of continuity of the evaluation value.   The signal conversion apparatus according to claim 1, wherein the parameters include at least two kinds of parameters for the conversion. Previous evaluation value holding means for holding the evaluation value for the output signal according to the previous parameter as the previous evaluation value;
Continuity index holding means for holding the degree of continuity of the evaluation value as a continuity index;
Further comprising continuity state holding means for holding the continuity state of the evaluation value as a continuity state,
The evaluation history management unit updates the continuity index holding unit and the continuity state holding unit based on the evaluation value received by the evaluation input receiving unit and the evaluation value held in the previous evaluation value holding unit. The signal converter according to claim 1. Previous parameter holding means for holding the previous parameter as the previous parameter,
A previous adjustment amount holding means for holding the adjustment amount at the time of generating the previous parameter as the previous adjustment amount;
The parameter generation means includes the continuity index held in the continuity index holding means, the continuity state held in the continuity state holding means, and the previous time held in the previous adjustment amount holding means. An adjustment amount calculating means for calculating an adjustment amount for generating the next parameter based on the adjustment amount, the continuity state held in the continuity state holding means, and the previous parameter held in the previous parameter holding means 4. The signal conversion apparatus according to claim 3, further comprising: a parameter calculation unit that calculates the next parameter based on the adjustment amount calculated by the adjustment amount calculation unit.   The signal conversion apparatus according to claim 4, wherein the adjustment amount calculation unit calculates the adjustment amount such that the adjustment amount increases as the continuity indicated by the continuity index increases.   When the parameter calculation means indicates that the continuity state is continuous, the parameter calculation means adds or subtracts the adjustment amount in the same direction as the increase / decrease of the previous parameter, and indicates that the continuity state is not continuous. 5. The signal conversion apparatus according to claim 4, wherein in the case shown, the next parameter is calculated by adding or subtracting the adjustment amount in a direction opposite to the increase / decrease of the previous parameter. In a signal conversion device that converts an input signal into an output signal according to parameters set in time series,
An evaluation input receiving procedure for receiving an input of a positive or negative evaluation value for the output signal;
An evaluation history management procedure for generating a degree and a state of affirmation or negative continuity of the evaluation value based on the history of the evaluation value;
And a parameter generation procedure for generating a next parameter based on the degree and state of the continuity of the evaluation values. In a signal conversion device that converts an input signal into an output signal according to parameters set in time series,
An evaluation input receiving procedure for receiving an input of a positive or negative evaluation value for the output signal;
An evaluation history management procedure for generating a degree and a state of affirmation or negative continuity of the evaluation value based on the history of the evaluation value;
A program that causes a computer to execute a parameter generation procedure for generating a next parameter based on the degree and state of continuity of the evaluation values.