Display apparatus and display apparatus drive method
First Claim
1. A hold-type display device, which continues display of an image for a prescribed display interval, comprising:
- a conversion unit operable to convert an input image signal into a high-frequency signal including;
a high-frequency image signal obtained by increasing the frequency of the image signal; and
a black display signal for the display of black;
a generation unit operable to generate a timing signal to change a write timing in a prescribed interval of the high-frequency image signal and the black display signal, in order to modify a ratio, within the prescribed interval, of;
an interval for image display by said high-frequency image signal;
to an interval for black display by said black display signal;
a display unit operable to modify the write timing of the high-frequency image signal and black display signal of the high-frequency signal converted by said conversion unit according to the timing signal generated by said generation unit, and to display the image;
a reception unit operable to receive television broadcast signals including electronic program guide information;
an extraction unit operable to extract electronic program guide information from the television broadcast signal received by said reception unit; and
a decision unit operable to decide the type of broadcast program based on the electronic program guide information extracted by said extraction unit and to output a ratio modification signal to change the ratio of the image display interval by said high-frequency image signal to the black display interval by said black display signal, according to the broadcast program type decision; and
whereinsaid generation unit includes a generation unit for programs operable to generate said timing signal according to the ratio modification signal output from said decision unit.
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Accused Products
Abstract
An EPG extraction portion extracts EPG information; a program type decision portion decides the type of broadcast program using the extracted EPG information, and outputs a ratio modification signal to change the ratio of the image display interval to the black display interval according to the program type; a driving pulse generation portion generates a gate driver control signal which changes the write timing of a frequency-doubled image signal and frequency-doubled black display signal in one field interval, according to the ratio modification signal; and, a gate driver changes the write timing of the frequency-doubled image signal and frequency-doubled black display signal according to the gate driver control signal, to change the ratio of the image display interval to the black display interval.
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Citations
12 Claims
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1. A hold-type display device, which continues display of an image for a prescribed display interval, comprising:
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a conversion unit operable to convert an input image signal into a high-frequency signal including;
a high-frequency image signal obtained by increasing the frequency of the image signal; and
a black display signal for the display of black;a generation unit operable to generate a timing signal to change a write timing in a prescribed interval of the high-frequency image signal and the black display signal, in order to modify a ratio, within the prescribed interval, of;
an interval for image display by said high-frequency image signal;
to an interval for black display by said black display signal;a display unit operable to modify the write timing of the high-frequency image signal and black display signal of the high-frequency signal converted by said conversion unit according to the timing signal generated by said generation unit, and to display the image; a reception unit operable to receive television broadcast signals including electronic program guide information; an extraction unit operable to extract electronic program guide information from the television broadcast signal received by said reception unit; and a decision unit operable to decide the type of broadcast program based on the electronic program guide information extracted by said extraction unit and to output a ratio modification signal to change the ratio of the image display interval by said high-frequency image signal to the black display interval by said black display signal, according to the broadcast program type decision; and
whereinsaid generation unit includes a generation unit for programs operable to generate said timing signal according to the ratio modification signal output from said decision unit. - View Dependent Claims (2, 3, 4, 5)
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6. A hold-type display device, which continues display of an image for a prescribed display interval, comprising:
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a conversion unit operable to convert an input image signal into a high-frequency signal including;
a high-frequency image signal obtained by increasing the frequency of the image signal; and
a black display signal for the display of black;a generation unit operable to generate a timing signal to change a write timing in a prescribed interval of the high-frequency image signal and the black display signal, in order to modify a ratio, within the prescribed interval, of;
an interval for image display by said high-frequency image signal;
to an interval for black display by said black display signal;a display unit operable to modify the write timing of the high-frequency image signal and black display signal of the high-frequency signal converted by said conversion unit according to the timing signal generated by said generation unit, and to display the image; a power supply unit operable to supply electrical power supplied from outside to the display unit, an internal battery detachably attached to the display unit for supplying power to the display unit when power is not being supplied to the display unit by said power supply unit, and ajudgment unit operable to judge the state of supply of power by said power supply unit and to output a ratio modification signal to change the ratio of the image display interval by said high-frequency image signal to the black display interval by said black display signal; and wherein said generation unit includes a generation unit for power operable to generate said timing signal according to the ratio modification signal output from said judgment unit. - View Dependent Claims (7, 8, 9, 10)
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11. A display device driving method, for use with a hold-type display device which continues display of an image for a prescribed display interval, said method comprising:
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converting an input image signal into a high-frequency signal including;
a high-frequency image signal obtained by increasing the frequency of the image signal; and
a black display signal for the display of black;generating a timing signal to change a write timing in a prescribed interval of the high-frequency image signal and the black display signal, in order to modify a ratio, within the prescribed interval, of;
an interval for image display by said high-frequency image signal;
to an interval for black display by said black display signal;modifying the write timing of the high-frequency image signal and black display signal of the high-frequency signal according to said timing signal, and displaying the image; receiving television broadcast signals including electronic program guide information; extracting electronic program guide information from the received television broadcast signal; and determining the type of broadcast program based on the extracted electronic program guide information and outputting a ratio modification signal to change the ratio of the image display interval by said high-frequency image signal to the black display interval by said black display signal, according to the broadcast program type decision; and
whereinin said generating of said timing signal, said timing signal is generated according to the ratio modification signal.
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12. A display device driving method, for use with a hold-type display device, which includes an internal battery and which continues display of an image for a prescribed display interval, said method comprising:
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converting an input image signal into a high-frequency signal including;
a high-frequency image signal obtained by increasing the frequency of the image signal; and
a black display signal for the display of black;generating a timing signal to change a write timing in a prescribed interval of the high-frequency image signal and the black display signal, in order to modify a ratio, within the prescribed interval, of;
an interval for image display by said high-frequency image signal;
to an interval for black display by said black display signal;modifying the write timing of the high-frequency image signal and black display signal of the high-frequency signal according to said timing signal, and displaying the image; supplying electrical power to the display device from a power source outside the display device; supplying power to the display device from the internal battery when power is not being supplied to the display device from outside; and judging the state of supply of power and outputting a ratio modification signal to change the ratio of the image display interval by said high-frequency image signal to the black display interval by said black display signal; and wherein in said generating of said timing signal, said timing signal is generated according to the ratio modification signal.
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Specification