Battery driven video reproduction apparatus
First Claim
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1. A video reproduction apparatus driven by a battery, comprising:
- a digital versatile disk reproduction device reproducing a video signal of a video program recorded on a disk;
a liquid crystal display device displaying a video image of said video program in accordance with said video signal reproduced by said digital versatile disk reproduction device;
first detection means for detecting a remaining time of said video program with said video signal being reproduced by said digital versatile disk reproduction device;
second detection means for detecting said battery'"'"'s availability;
calculation means using said video program'"'"'s remaining time detected by said first detection means and said battery'"'"'s availability detected by said second detection means for calculating power available before reproducing said video program ends;
a memory having stored therein one of a table and a mathematical expression representing a relationship between said liquid crystal display device'"'"'s screen brightness and power consumption; and
means for setting said liquid crystal display device'"'"'s screen brightness as based on a calculation performed thereby of a brightness corresponding to power calculated by said calculation means using one of said table and mathematical expression stored in said memory.
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Abstract
A video reproduction apparatus detects the remaining time of a movie being reproduced and a battery'"'"'s availability and calculates therefrom power available before reproducing the movie ends, and uses the power as calculated and a table representing a relationship between the liquid crystal display device'"'"'s screen brightness and power consumption to calculate and set the liquid crystal display device'"'"'s screen brightness to prevent the battery from running out while the movie is being reproduced.
10 Citations
4 Claims
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1. A video reproduction apparatus driven by a battery, comprising:
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a digital versatile disk reproduction device reproducing a video signal of a video program recorded on a disk;
a liquid crystal display device displaying a video image of said video program in accordance with said video signal reproduced by said digital versatile disk reproduction device;
first detection means for detecting a remaining time of said video program with said video signal being reproduced by said digital versatile disk reproduction device;
second detection means for detecting said battery'"'"'s availability;
calculation means using said video program'"'"'s remaining time detected by said first detection means and said battery'"'"'s availability detected by said second detection means for calculating power available before reproducing said video program ends;
a memory having stored therein one of a table and a mathematical expression representing a relationship between said liquid crystal display device'"'"'s screen brightness and power consumption; and
means for setting said liquid crystal display device'"'"'s screen brightness as based on a calculation performed thereby of a brightness corresponding to power calculated by said calculation means using one of said table and mathematical expression stored in said memory.
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2. A video reproduction apparatus driven by a battery, comprising:
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video signal reproduction means for reproducing a video signal of a video program recorded in a storage medium;
a video display device displaying a video image of said video program in accordance with said video signal reproduced by said video signal reproduction means;
first detection means for detecting a remaining time of said video program with said video signal being reproduced by said video signal reproduction means;
second detection means for detecting said battery'"'"'s availability;
calculation means using said video program'"'"'s remaining time detected by said first detection means and said battery'"'"'s availability detected by said second detection means for calculating power available before reproducing said video program ends; and
means for setting said video display device'"'"'s screen brightness as based on power calculated by said calculation means. - View Dependent Claims (3, 4)
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Specification