Liquid crystal television receiver, liquid crystal display control method, program thereof, and recording medium

A liquid crystal television receiver which corrects optical response characteristics of a liquid crystal panel by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal television receiver being capable of reproducing images based on image data of more than one broadcasting standard,
• the liquid crystal television receiver comprising:
• signal type detection means for detecting whether input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• enhancing conversion means for subjecting the input image data to enhancing conversion in a direction of gray level transition;
• temperature detection means for detecting a temperature in the liquid crystal television receiver;
• and
• table memories that store enhancing conversion parameters that correspond to respective temperatures in the liquid crystal television receiver and are specified by the image data of the current vertical period and the image data of the directly previous vertical period,
• at least one of the table memories being referable regardless of the signal type, and
• the enhancing conversion means subjecting the image data to the enhancing conversion, using the enhancing conversion parameter read out from one of the table memories that is selected and referred to in accordance with the result of detection by the signal type detection means and the result of detection by the temperature detection means.

A liquid crystal television receiver which corrects optical response characteristics of a liquid crystal panel by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal television receiver being capable of reproducing images based on image data of more than one broadcasting standard,
• the liquid crystal television receiver comprising:
• signal type detection means for detecting whether input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• enhancing conversion means for subjecting the input image data to enhancing conversion in a direction of gray level transition;
• temperature detection means for detecting a temperature in the liquid crystal television receiver;
• and
• a table memory that stores an enhancing conversion parameter specified by image data of a current vertical period and image data of a directly previous vertical period, the enhancing conversion means including:
• an operation section that performs an operation on the image data so as to enhance the image data, using the enhancing conversion parameter;
• and
• a multiplying section that multiplies output data of the operation section by a coefficient corresponding to the result of detection by the signal type detection means and the result of detection by the temperature detection means.

A liquid crystal television receiver which corrects optical response characteristics of a liquid crystal panel by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal television receiver being capable of reproducing images based on image data of more than one broadcasting standard,
• the liquid crystal television receiver comprising:
• signal type detection means for detecting whether input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• enhancing conversion means for subjecting the input image data to enhancing conversion in a direction of gray level transition;
• temperature detection means for detecting a temperature in the liquid crystal television receiver;
• a first table memory that stores an enhancing conversion parameter specified by the image data of the current vertical period and the image data of the directly previous vertical period, the first table memory being referred to when the input image data is the video signal of the first broadcasting standard;
• and
• a second table memory that stores an enhancing conversion parameter specified by the image data of the current vertical period and the image data of the directly previous vertical period, the second table memory being referred to when the input image data is the video signal of the second broadcasting standard,
• the enhancing conversion means including:
• an operation section that performs, using the enhancing conversion parameter read out from the first or second table memory in accordance with the result of the detection by the signal type detection means, an operation on the image data so as to enhance the image data;
• and
• a multiplying section that multiplies output data of the operation section by a coefficient corresponding to the result of detection by the temperature detection means.

A liquid crystal television receiver which corrects optical response characteristics of a liquid crystal panel by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal television receiver being capable of reproducing images based on image data of more than one broadcasting standard,
• the liquid crystal television receiver comprising:
• signal type detection means for detecting whether input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• enhancing conversion means for subjecting the input image data to enhancing conversion in a direction of gray level transition;
• temperature detection means for detecting a temperature in the liquid crystal television receiver;
• first table memories that store enhancing conversion parameters that correspond to respective temperatures in the liquid crystal television receiver and are specified by the image data of the current vertical period and the image data of the directly previous vertical period, the first table memories being referred to when the input image data is the video signal of the first broadcasting standard;
• and
• second table memories that store enhancing conversion parameters that correspond to respective temperatures in the liquid crystal television receiver and are specified by the image data of the current vertical period and the image data of the directly previous vertical period, the second table memories being referred to when the input image data is the video signal of the second broadcasting standard,
• the enhancing conversion means including an operation section that performs, using the enhancing conversion parameter read out from one of the first and second table memories in accordance with the result of the detection by the signal type detection means and the result of the detection by the temperature detection means, an operation on the image data so as to enhance the image data.

A liquid crystal display control method for correcting optical response characteristics of a liquid crystal display panel, by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal panel being capable of reproducing images based on image data of more than one broadcasting standard,
• the method comprising the steps of:
• (i) detecting whether a signal type of input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• (ii) subjecting the image data to the enhancing conversion in a direction of gray level transition;
• (iii) detecting a temperature in an apparatus;
• (iv) referring to table memories that store enhancing conversion parameters that correspond to respective temperatures in the apparatus and are specified by the image data of the current vertical period and the image data of the directly previous vertical period;
• and
• (v) in accordance with a comparison between a switching temperature determined by the signal type detected in the step (i) and the temperature detected in the step (iii), performing an operation on the image data so as to enhance the image data, using the enhancing conversion parameter read out from one of the table memories.

A liquid crystal display control method for correcting optical response characteristics of a liquid crystal display panel, by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal panel being capable of reproducing images based on image data of more than one broadcasting standard,
• the method comprising the steps of:
• (i) detecting whether a signal type of input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• (ii) subjecting the image data to the enhancing conversion in a direction of gray level transition;
• and
• (iii) detecting a temperature in an apparatus,
• in the step (ii), the image data being subjected to the enhancing conversion, using an enhancing conversion parameter read out from one of table memories that is selected and referred to in accordance with the result of detection in the step (i) and the result of detection in the step (iii), the table memories storing enhancing conversion parameters that correspond to respective temperatures in the apparatus and are specified by the image data of the current vertical period and the image data of the directly previous vertical period, and at least one of the table memories being referable regardless of the signal type.

A liquid crystal display control method for correcting optical response characteristics of a liquid crystal display panel, by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal panel being capable of reproducing images based on image data of more than one broadcasting standard,
• the method comprising the steps of:
• (i) detecting whether a signal type of input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• (ii) subjecting the image data to the enhancing conversion in a direction of gray level transition;
• (iii) detecting a temperature in an apparatus;
• (iv) referring to a table memory that stores an enhancing conversion parameter specified by the image data of the directly previous vertical period and the image data of the current vertical period;
• (v) performing an operation on the image data so as to enhance the image data, using the enhancing conversion parameter;
• and
• (vi) multiplying output data as a result of the step (v) by a coefficient corresponding to the signal type detected in the step (i) and the temperature detected in the step (iii).

A liquid crystal display control method for correcting optical response characteristics of a liquid crystal display panel, by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal panel being capable of reproducing images based on image data of more than one broadcasting standard,
• the method comprising the steps of:
• (i) detecting whether a signal type of input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• (ii) subjecting the image data to the enhancing conversion in a direction of gray level transition;
• (iii) detecting a temperature in an apparatus;
• (iv) referring to first table memory that stores an enhancing conversion parameter specified by the image data of the current vertical period and the image data of the directly previous vertical period, the first table memory being referred to in a case where the input image data is the video signal of the first broadcasting standard;
• (v) referring to second table memory that stores an enhancing conversion parameter specified by the image data of the current vertical period and the image data of the directly previous vertical period, the second table memory being referred to in a case where the input image data is the video signal of the second broadcasting standard;
• (vi) in accordance with the signal type detected in the step (i), performing an operation on the image data so as to enhance the image data, using the enhancing conversion parameter read out from the first or second table memory;
• and
• (vii) multiplying output data as a result of the step (vi) by a coefficient corresponding to each temperature detected in the step (iii).

A liquid crystal display control method for correcting optical response characteristics of a liquid crystal display panel, by subjecting image data supplied to the liquid crystal display panel to enhancing conversion at least in accordance with image data of a directly previous vertical period and image data of a current vertical period,

• the liquid crystal panel being capable of reproducing images based on image data of more than one broadcasting standard,
• the method comprising the steps of:
• (i) detecting whether a signal type of input image data is a video signal of a first broadcasting standard or a video signal of a second broadcasting standard, the video signal of the first broadcasting standard being different, in terms of a vertical frequency, from the video signal of the second broadcasting standard;
• (ii) subjecting the image data to the enhancing conversion in a direction of gray level transition;
• (iii) detecting a temperature in an apparatus;
• (iv) referring to first table memories that store enhancing conversion parameters that correspond to respective temperatures in the apparatus and are specified by the image data of the current vertical period and the image data of the directly previous vertical period, the first table memories being referred to in a case where the input image data is the video signal of the first broadcasting standard;
• (v) referring to second table memories that store enhancing conversion parameters that correspond to respective temperatures in the apparatus and are specified by the image data of the current vertical period and the image data of the directly previous vertical period, the second table memories being referred to in a case where the input image data is the video signal of the second broadcasting standard;
• and
• (vi) in accordance with the signal type detected in the step (i) and the temperature detected in the step (iii), performing an operation on the image data so as to enhance the image data, using the enhancing conversion parameter read out from one of the first and second table memories.