Battery driven video reproduction apparatus

• US 7,725,009 B2
• Filed: 07/07/2005
• Issued: 05/25/2010
• Est. Priority Date: 07/15/2004
• Status: Expired due to Fees

• Current Assignee: Funai Electric Co., Ltd.
• Original Assignee: Funai Electric Co., Ltd.
• Inventors: Suzuki, Takuya
• Primary Examiner(s): Tran; Thai
• Assistant Examiner(s): Wendmagegn; Girumsew
• Application Number:
  US11/176,777
• Publication Number:
  US 20060013570A1
• Time in Patent Office: 1,783 Days
• Field of Search: 386/125, 386/126, 386/95
• US Class Current: 386/277
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/4424 Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used error monitoring in general G06F11/30; arrangements for monitoring conditions of receiving stations in broadcast systems H04H60/32; diagnosis, testing or measuring for television receivers H04N17/04
• CPC Class Codes: H04N 21/462 Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
• CPC Class Codes: H04N 5/57 Control of contrast or brightness
• CPC Class Codes: H04N 5/63 Generation or supply of power specially adapted for television receivers
• CPC Class Codes: H04N 5/85 on discs or drums

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.

Claims

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,

wherein said first detection means determines whether information from said digital versatile disk reproduction device is a sequential PGC title when a brightness adjustment button is pressed, and if said information is said sequential PGC title said first detection means detects based on said information said remaining time of said video program being reproduced, and if said information is not said sequential PGC title said first detection means ends adjusting brightness.

2. A video reproduction apparatus driven by a battery, comprising:

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,

wherein said video signal reproduction means is a digital versatile disk reproduction device,

said video display device is a liquid crystal display device, and

said first detection means determines whether information from said digital versatile disk reproduction device is sequential PGC title when a brightness adjustment button is pressed, and if said information is said sequential PGC title said first detection means detects based on said information said remaining time of said video program being reproduced, and if said information is not said sequential PGC title said first detection means ends adjusting brightness.

3. The video reproduction apparatus according to claim 2, further comprising a memory having stored therein one of a table and a mathematical expression representing a relationship between said video display device'"'"'s screen brightness and power consumption,

wherein said means sets 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.