Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
1997-06-19
2001-06-26
Alam, Hosain T. (Department: 2172)
Data processing: database and file management or data structures
Database design
Data structure types
Reexamination Certificate
active
06253221
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to character display for a digital versatile disc (DVD) player and particularly to a character display apparatus and method for a DVD player using font data recorded on a disc.
2. Description of the Prior Art
FIG. 1
is a block diagram of a conventional character display system for a DVD player. As shown in
FIG. 1
, conventional character display system is provided with a pickup
102
for detecting data recorded on a disc
101
, a high frequency processing section
103
for processing the detected data of the pickup
102
and outputting video signals, a font ROM
104
for storing font data corresponding to multi-languages, a character generation section
105
for receiving the font data stored in the font ROM
104
and generating character signals of characters for subtitle processing a language selected by a user, and a controller
106
for controlling the high frequency processing section
103
, the font ROM
104
and the character generation section
105
.
The operation of the conventional character display system will be described hereinafter.
First, when a disc is inserted in a DVD player thereby initiating a playback, the pickup
102
detects data recorded on the disc and outputs them to the high frequency processing section
103
.
Accordingly, the high frequency processing section
103
processes the detected data of the pickup
102
and outputs video signals thereby displaying images on a screen.
At this time, if the user inputs a language selection key signal (not shown), the controller
106
recognizes it and controls the character generation section
105
.
Thus, the character generation section
105
reads the font data of the language selected by the user among the font data of the multi-languages stored in the font ROM
104
for multilingual character subtitle processing and outputs the corresponding character signals.
However, conventionally, font data of all the multi-languages had to be stored in the DVD player, if multilingual character subtitle processing is needed (for example, 32 languages in standard for DVD players). As a result, ROM(s) having larger memory capacity must be used thereby increasing the cost of manufacturing DVD players.
SUMMARY OF THE INVENTION
To solve the above problem with the conventional character display system, an object of the present invention is to provide a character display apparatus for a DVD player which is capable of reducing the memory capacity neeeded for multilingual character subtitle processing.
Another object of the present invention is to provide a character display method for a DVD player which is capable of reducing the memory capacity necessary for multilingual character subtitle processing.
Yet another object of the present invention is to provide a DVD that is used in the character display apparatus and method to reduce the memory capacity needed in the player.
Still another object of the present invention is to maximize the efficiency of use of a DVD.
To accomplish the above objects, one aspect of the present invention is to provide a character display apparatus for a DVD player which outputs character signals of a language selected from multi-languages to be used in the multilingual character subtiltle processing, on the basis of font data at least some of which are recorded in a DVD.
The character display apparatus may comprise a detection and separation means for detecting the recorded data including the font data from the DVD, and for separating the font data from the detected data; a first memory means for storing font data output from the detection and separation means; a character generation means for outputting the character signals of the selected language for subtitle processing by using the font data stored in the first memory means; and a control means for controlling the detection and separation means, the first memory means and the character generation means.
Further, the detection and separation means may comprise a pickup means for detecting the recorded data including the font data from the DVD, and for outputting the detected data; a high frequency processing means for processing detected data output from the pickup means, and for outputting video data signals; and a data separation means for separating the font data from the output signals of the high frequency processing means, and for outputting the separated font data. The control means may control the high frequency processing means, the data separation means, the first memory means and the character generation means.
The character display apparatus may, in addition, comprises a second memory for storing font data of some of the multi-languages. The control means may control the character generation means to output character signals of the selected language for subtitle processing by using the font data of the selected language from the second memory if the font data of the selected language is not on the DVD.
According to one aspect of a character display method for a DVD player of this invention, character signals of a language selected from multi-languages to be used in the multilingual character subtitle processing on the basis of font data at least some of which are recorded in a DVD are output for subtitle processing.
The character display method may comprise steps of: detecting the recorded data including the font data from the DVD, and separating the font data from the detected data; storing the separated font data output from detecting and separating step in a first memory means; and outputting the character signals of the selected language for subtitle processing by using the font data stored in the first memory means.
Further, the detecting and separating step may comprise the substeps of detecting and outputting the recorded data including the font data from the DVD; processing the recorded data output from the detecting and outputting substep, and outputting video data signals; and separating the font data from the video data signals, and for outputting the separated font data.
Further, the player may further comprise a second memory for storing font data of some of the multi-languages, and in the step of outputting the character signals of the selected language for subtitle processing, the character signals of the selected language may be output by using the font data of the selected language stored in the second memory if the character signals of the selected language for subtitle processing are not on the DVD.
According to another aspect of the character display method for a DVD player of this invention, the method comprises a first step for determining whether font data of at least some of multi-languages to be used in multilingual subtitle processing are recorded in a DVD if the DVD is inserted in the player; a second step for storing font data of at least some of the recorded languages in a first memory, if the font data of characters of languages related to the multilingual subtitle processing are stored in the DVD; and a third step for outputting character signals of a selected language for subtitle processing according to the font data stored in the first memory when one of the multi-languages is selected.
In the above, the player may further comprise a second memory for storing font data of some of the multi-languages, and the character signals of the selected language for subtitle processing in the third step may be output by using the font data of the selected language from the second memory if the character signals of the selected language for subtitle processing are not recorded on the DVD.
Further, the present invention provides a DVD on which font data of at least some of multi-languages to be used in the multilingual subtitle processing are recorded.
Generally, it is possible for a DVD player to subtitle-process 32 languages according to its standard. Thus font data of each of the above exemplified 32 languages are needed for selective subtitle processing of the 32 languages. However, according to the abovementioned construct
Alam Hosain T.
Kindred Alford W.
LG Electronics Inc.
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