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Apparatus and method for an additional contents display of an optical disc player

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Publication number
USRE42441E1
USRE42441E1 US10606362 US60636203A USRE42441E1 US RE42441 E1 USRE42441 E1 US RE42441E1 US 10606362 US10606362 US 10606362 US 60636203 A US60636203 A US 60636203A US RE42441 E1 USRE42441 E1 US RE42441E1
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Prior art keywords
data
font
character
selected
disc
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Expired - Lifetime
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US10606362
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Young-Chul Kim
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LG Electronics Inc
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LG Electronics Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/84Television signal recording using optical recording
    • H04N5/85Television signal recording using optical recording on discs or drums
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/222Control of the character-code memory
    • G09G5/225Control of the character-code memory comprising a loadable character generator
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327Table of contents
    • G11B27/329Table of contents on a disc [VTOC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41Structure of client; Structure of client peripherals
    • H04N21/426Characteristics of or Internal components of the client
    • H04N21/42646Characteristics of or Internal components of the client for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/485End-user interface for client configuration
    • H04N21/4856End-user interface for client configuration for language selection, e.g. for the menu or subtitles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/488Data services, e.g. news ticker
    • H04N21/4884Data services, e.g. news ticker for displaying subtitles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/79Processing of colour television signals in connection with recording
    • H04N9/80Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8233Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being a character code signal
    • H04N9/8244Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being a character code signal involving the use of subcodes
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • G11B2220/2562DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry
    • H04N5/445Receiver circuitry for displaying additional information
    • H04N5/44504Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits

Abstract

This invention relates to a character display apparatus and method for a DVD (Digital Versatile Disc) player. According to the present invention, it is provided that font data of at least some of multi-languages to be used in multilingual subtitle processing are recorded on certain area(s) of a DVD, the recorded font data are stored in a font memory at initial stage of playback, the stored font data corresponding to a language selected by selection input of a user are then read, characters for subtitle processing of the selected language are displayed. Therefore, the manufacturing cost of DVD players can be reduced due to the reduction of memory capacity requied and DVDs can be maximum efficiently utilized.A character display apparatus for an optical disc player, and which includes a detection and separation unit to detect recorded data including a first font data from an optical disc, and to separate the first font data from the detected recorded data, a memory to store the first font data output from the detection and separation unit, a character generation unit to generate character signals for characters of a selected language for a subtitle by using the first font data stored in the memory, and a controller coupled to the character generation unit, to cause the character generation unit to generate the character signals for the characters of the selected language for character subtitle processing selected from multiple languages to be used in the character subtitle processing on the basis of the first font data. Further, the first font data is downloaded from the optical disc and stored in the memory such that the stored first font data is separate from the characters of the selected language before the character generation unit generates the characters of the selected language.

Description

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 construction of the present invention, the relevant characters of a selected language are displayed by reading out font data of the selected language when character display is selected after font data of at least some of 32 languages recorded on a predetermined area of the DVD have been downloaded, and stored into a RAM(s) at the beginning of a playback.

Namely, the present invention may exclude font data of at least some of the languages among the multi-languages from the font ROM. For example, on the basis of recorded contents of a disc, font data of languages with less chance to be selected by users can be recorded on a disc through discussion with manufacturers. Therefore the capacity of the font ROM may be reduced ralative to the conventional character display system where all of the font data of 32 languages must be recorded on the font ROM.

To accomplish the above objects, one aspect of the present invention is to provide a character display apparatus for an optical disc player. The apparatus includes a detection and separation unit to detect recorded data including a first font data from an optical disc, and to separate said first font data from the detected recorded data, a memory to store the first font data output from said detection and separation unit, a character generation unit to generate character signals for characters of a selected language for a subtitle by using the first font data stored in said memory, and a controller coupled to the character generation unit, to cause the character generation unit to generate the character signals for the characters of the selected language for character subtitle processing selected from multiple languages to be used in the character subtitle processing on the basis of the first font data. Further, the first font data is downloaded from the optical disc and stored in the memory such that the stored first font data is separate from the characters of the selected language before the character generation unit generates the characters of the selected language.

In another aspect, the present invention provides a character display method for an optical disc player. The method includes detecting recorded data including first font data recorded in an optical disc, and outputting said detected recorded data as output signals, processing the output signals, and outputting video signals, separating the first font data from the video signals, and outputting the separated first font data, storing the first font data in a first memory, and outputting character signals of characters for a selected language for character subtitle processing by using the first font data stored in said first memory. Further, the first font data is downloaded from the optical disc and stored in the first memory such that the stored first font data is separate from the characters of the selected language before the outputting step outputs the characters of the selected language.

In yet another aspect, the present invention provides a character display method for an optical disc player. The method includes determining whether first font data corresponding to at least some of multiple languages to be used in character subtitle processing are recorded in an optical disc, storing the first font data in a first memory, if the first font data corresponding to characters of languages for the character subtitle processing are stored in said optical disc, and outputting character signals for characters of a selected language for the character subtitle processing according to the first font data stored in said first memory when one of said multiple languages is selected, and outputting the character signals for the characters of the selected language using second font data of the selected language from a second memory if the first font data of the selected language are not recorded in said disc. Further, the first font data is downloaded from the optical disc and stored in the first memory such that the stored first font data is separate from the characters of the selected language before the outputting step outputs the characters of the selected language.

In still another aspect character display apparatus for an optical disc player, and which includes a data separator to separate first font data to be used in character subtitle processing from a predetermined area of an optical disc, a first memory to store the separated first font data, a second memory to store predetermined second font data to be used in the character subtitle processing, a character generator to generate character signals for characters of a selected language for the character subtitle processing from the first or second font data stored in the first or second memories, respectively, and a controller to cause the character generator to generate the character signals for the characters of the selected language for the character subtitle processing from the first or second font data stored in the first or second memories, respectively, thereby outputting the character signals for the characters of the selected language for the character subtitle processing selected from multiple languages to be used in the character subtitle processing on the basis of said first or second font data.

In another aspect, the present invention provides a character display method for an optical disc player, and which includes selecting a language for subtitle processing from multiple languages, separating first font data from other data read from a disc, storing the separated first font data in a first memory, and generating character signals from the stored first font data or from predetermined second font data stored in a second memory, thereby outputting character signals for characters of the selected language to be used in the character subtitle processing on the basis of said first or second font data. Further, the first font data is downloaded from the disc and stored in the first memory such that the stored first font data is separate from the characters of the selected language before the generating step outputs the characters of the selected language.

In another aspect, the present invention provides a system for generating character signals for a selected language of a subtitle recorded in an optical disc, said optical disc including at least a predetermined area on which first font data for generating character signals to be used in character subtitle processing are located. The system includes an optical pickup to read recorded data including the first font data to be used in the character subtitle processing, a data processor to process the first font data read from the optical pickup, a first memory to store the first font data, a second memory to store predetermined second font data to be used in the character subtitle processing, a character generator to generate the character signals for characters of the selected language for the character subtitle processing from the first or second font data stored in the first or second memories, respectively, and a controller to cause the character generator to generate the character signals for the characters of the selected language from the first or second font data stored in the first or second memories, respectively, based on the selected language, thereby outputting the character signals for the characters of the selected language from multiple languages to be used in the character subtitle processing on the basis of the first or second font data. Further, the first font data is downloaded from the optical disc and stored in the first memory such that the stored first font data is separate from the characters of the selected language before the controller outputs the characters of the selected language.

In another aspect, the present invention provides an apparatus for an additional contents display of an optical disc player, and which includes a detector to detect additional contents data associated with a main title of an optical disc, the additional contents data including a first font data, a first memory to store the detected additional contents data, a processor to process said additional contents data stored in the first memory to generate specific presentation data, and a controller to control the processor to process the additional contents data to display a specific content associated with the main title by using said specific presentation data. Further, the processor process the additional contents data including the first font data stored in the first memory of the optical disc player, the first font data being different than a second font data predetermined for the main title, and the first and second font data are different than text data.

In yet another aspect, the present invention provides a method for an additional contents display of an optical disc player, and which includes detecting additional contents data associated with a main title of an optical disc, the additional contents data including a first font data, storing the detected additional contents data in a first memory, processing the stored additional contents data to generate specific presentation data, and outputting the specific presentation data for displaying a specific content associated with the main title by using the specific presentation data. Further, the processing step uses the additional contents data including the first font data stored in the first memory of the optical disc player, the first font data being different than a second font data predetermined for the main title, and the first and second font data are different than text data.

Other and further objects, features and advantages of the invention will be apparent from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

A detailed description of this invention will be given with reference to the accompanying drawings.

FIG. 1 is a block diagram of a conventional character display system for a DVD player.

FIG. 2 is a block diagram of an embodiment of the character display apparatus for a DVD player according to the present invention.

FIG. 3 is an illustration of a recording format of a disc.

FIG. 4 is a flow chart showing the character display according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 2 is a block diagram of an embodiment of the character display apparatus for a DVD player according to the present invention As shown, the character display apparatus for a DVD player according to the embodiment of the present invention is provided with a pickup 202 which detects recorded data including font data of at least some of multi-languages to be used in multilingual subtitle processing from a disc 201; a high frequency processing section 203 for processing output signals of the pickup 202 and outputting video data signals; a data separation section 204 for separating the font data from output signals of the high frequency processing section 203; a font RAM 205 for storing output data of the data separation section 204; a font ROM 206 for storing predetermined font data; a character generation section 207 for receiving the output data from the font RAM 205 and the output data from the font ROM 206, and outputting character signals; and a controllor 208 for controlling operations of the high frequency processing section 203, the font data separation section 204, the character generation section 207, the font RAM 205, and the font ROM 206.

The operation of the present invention constructed as above will be explained hereinafter.

First, when the disc 201 is inserted, the pickup 202 picks up a recording surface of the disc 201 including a predetermined area or predetermined areas on which the font data are recorded, and outputs the detected video management information to the high frequency processing section 203.

Then, when the high frequency processing section 203 processes the deteced signals of the pickup 202 and outputs video signals, the controller 208 determines whether font data are on the disc 201.

Here, information stored on the disc 201 is comprised of Video Managing Information(VMGI), Video Title Section (VTS#1˜VTS#n) and font data, as shown in FIG. 3.

At this time, Video Managing Information (VMGI) has information concerning the existence, position and size of the recorded font data.

Accordingly, if font data are recorded on the disc 201, controller 208 controls the servo (not shown) so as to move the pickup 202 to the position where the font data are recorded.

Then, when the pickup 202 plays back the font data recorded on the disc 201, the high frequency processing section 203 processes the reproduced font data and outputs video signals, and the data separation section 204 separates the font data from the output signals of the high frequency processing section 203 and stores the separated font data into the font RAM 205.

After this, when the storing of the recorded font data into the font RAM 205 is completed, the controller 208 controls the servo (not shown) so as to move the pickup 202 to the initial playback position.

Accordingly, when the pickup 202 detects data recorded on the disc 201, output signals of the high frequency processing section 203 which processes the detected data are signal-processed in a predetermined way to play back titles, and the controller 208 under playback determines whether input of the menu keys has been made.

At this time, when there has been input of menu keys, the controller 208 determines whether font data corresponding to the input are on the disc 201.

Accordingly, when corresponding font data are on the disc 201, the character generation section 207 controlled by the controller 208 reads data stored in the font RAM 205 and outputs character signals thereby displaying menu on a screen.

On the other hand, when corresponding font data are not recorded on the disc 201, the character generation section 207 controlled by controller 208 reads data stored in the font ROM 206 and outputs character signals thereby displaying menu on the screen.

The above operation will be explained with reference to the flow chart shown in FIG. 4.

Namely, when the disc 201 is inserted at step S10, Video Managing Information (VMGI) recorded at certain area is read at step S12 and it is determined at step S11 whether font data are recorded on the disc 201.

Then, if font data are recorded on the disc 201, the pickup 202 is jumped to the position where the font data are recorded so as to detect the font data recorded on the disc 201 at step S13.

Accordingly, when the high frequency processing section 203 processes output signals of the pickup 202 and outputs video signals, the font data separation section 204 separates the font data from the output video signals and store the separated font data into the font RAM 205 at step S14.

Thereafter, when it is determined at step S12 that font data is not recorded on the disc 201, or the storing of the font data into the font RAM 205 is completed at step S15, the pickup 202 is moved to the initial playback position designated by Video Managing Information (VMGI), and plays back a title at step S16.

At this time, if input of the menu keys is made at step S17, it is determined at step S18 whether font data corresponding to the language selected by a user exist on the disc 201 so as to determine whether the font RAM 205 or the font ROM 206 is to be used as a source for the font data of the language selected by the user.

Accordingly, when the corresponding font data are on the disc 201 at step S18, the control flow goes to step S19, and then the character generation section 207 uses the font data stored on the font RAM 205 to output character signals thereby displaying subtitle in the selected language on a screen at step S19.

Otherwise, the control flow goes to step S20, and then the character generation section 207 uses the font data stored on the font ROM 206 to output character signals thereby displaying subtitle in the selected language on a screen at step S20.

According to the above embodiment of the present invention, it is provided that font data of at least some of the multi-languages to be used in multilingual subtitle processing, for example, rarely used font data are recorded (preformatted) on a disc, and then, stored into a font RAM, the font data of a language selected by a user are used from the font RAM thereby subtitle in the desired language (character) is being displayed on playback.

However, according to the present invention, it is also possible to record(format) font data corresponding to all languages on certain areas of a disc, to store the font data into a font RAM, to read the font of a language selected by a user from the font RAM and to display subtitle in the desired language (character). In this case, the font ROM 206 in FIG. 2 is not necessary.

As explained in detail above, the character display apparatus and method for a digital versatile disc (DVD) player according to the present invention record font data of at least some of multi-languages to be used in multilingual subtitle processing on certain area(s) of a disc, store the font data into a memory at initial stage of playback, read the stored font data corresponding to a language selected by selection input of a user and display character signals of the selected language for subtitle processing. Thus, the manufacturing cost can be reduced due to reduction of memory capacity requied and further DVDs can be maximum efficiently utilized.

As will be evident to those skilled in the art, various modifications of this invention can be made or followed in light of the foregoing disclosure without departing from the spirit of the disclosure or from the scope of the claims.

Claims (25)

1. A character display apparatus for an optical disc player, the apparatus comprising:
a detection and separation unit to detect if recorded data on an optical disc includes including a first font data from said optical disc, and to separate said first font data from the detected recorded data detected if the first font data is recorded on the optical disc;
a first memory area to store the first font data separated and output from said detection and separation unit;
a second memory area to store a second font data, wherein the first and second memory areas are separated from one another;
a character generation unit to selectively generate character signals of for characters of a selected language for a subtitle by using to have a font defined by the first font data stored in said memory if the first font data recorded on the optical disc is selected and to have a font defined by the second font data if the second font data stored in the second memory is selected; and
a controller coupled to the character generation unit, to cause the character generation unit to selectively generate the character signals of a language for the characters of the selected language for character subtitle processing selected from multiple languages multi-languages to be used in the character subtitle processing in multilingual character subtitle processing on the basis of font data, at least some of which are recorded in the optical disc,
wherein the first and second font data are separate from the characters of the selected language before the character generation unit generates the character signals of the selected language.
2. The character display apparatus according to claim 1, wherein said detection and separation unit comprises:
a pickup to detect the recorded data including said first font data from said optical disc, and to output the detected recorded data detected as output signals;
a high frequency processing unit to process the output signals of said pickup, and to output video data signals; and
a data separation unit to separate said first font data from the output video data signals of said high frequency processing unit, and to output the separated first font data,
wherein said controller controls said high frequency processing unit, said data separation unit, said memory and said character generation unit.
3. The character display apparatus according to claim 1,
wherein said character display apparatus further comprises a second memory for storing font data of predetermined languages, and
wherein said controller controls said character generation unit to output character signals of characters of the selected language for subtitle processing by using the font data of the selected language from said second memory if the font data of the selected language are not on said optical disc.
4. A character display method for method of controlling an optical disc player, the method comprising:
detecting if recorded data including a on an optical disc includes a first font data recorded in said optical disc, and outputting said recorded data detected as output signals;
processing the output signals, recorded data and outputting video output signals including video data and the first font data;
separating said first font data from the video output signals, and outputting the separated first font data separated, if the first font data exists on the optical disc;
storing the separated first font data in a first memory area, a second font data being stored in a second memory area, wherein the first and second memory areas are separated from one another; and
selectively generating, via a character generation device, character signals for characters of a selected language for a subtitle to have a font defined by the first font data if the first font data on the disc is selected and to have a font defined by the second font data if the second font data stored in the second memory area is selected; and
outputting the said character signals of the characters for a the selected language for character subtitle processing by using the font data stored in said first memory,
wherein the first and second font data are separate from the characters of the selected language before the outputting step outputs the character signals of the selected language.
5. The character display method according to claim 4,
wherein said player further comprises a second memory for storing font data of predetermined languages, and
wherein said step of outputting the character signals of the selected language for subtitle processing includes outputting the character signals by using the font data of the selected language from said second memory if the font data of the selected language are not on said optical disc.
6. A character display method for of controlling an optical disc player, the method comprising:
determiningdetecting whether a first font data corresponding to of at least some of multi-languages multiple languages to be used in multilingual character subtitle processing is recorded in an optical disc;
separating the first font data from the detected recorded data if the first font data is recorded on the optical disc;
storing the separated first font data of at least some of the multi-languages in a first memory area,if the first font data corresponding to of characters of languages for multilingual the character subtitle processing are stored in is recorded on said optical disc, a second font data being stored in a second memory area, wherein the first and second memory areas are separated from one another; and
selectively outputting character signals for characters of a selected language for the character subtitle processing according to the font data stored in the first memory when one of said multiple languages multi-languages is selected, and outputting the character signals by using the font data of the selected language from a second memory if the font data of the selected language are not recorded in said disc to have a font defined by the first font data if the first font data recorded on the optical disc is selected and to have a font defined by the second font data if the second font data stored in the second memory area is selected,
wherein the first and second font data are separate from the characters of the selected language before the outputting step outputs the character signals of the selected language.
7. A character display apparatus for an optical disc player, the apparatus comprising:
a detector to detect whether a first font data to be used in character subtitle processing is recorded on a predetermined area of an optical disc;
a data separator to separate said first font data to be used in multilingual subtitle processing from a predetermined area of an from recorded data including video data and the first font data on the optical disc when the detector detects the first font data is recorded on the optical disc;
a first memory area to store the separated first font data;
a second memory area to store predetermined a second font data to be used in the character multilingual subtitle processing, wherein the first and second memory areas are separated from one another;
a character generator to generate character signals for characters of a selected language for the character subtitle processing from the first or second stored font data; and
a controller to cause the character generator to selectively generate the character signals for the characters of the selected language for the character subtitle processing to have a font defined by the first font data if the first font data recorded on the optical disc is selected and to have a font defined by the second font data if the second font stored in the second memory area is selected from the font data stored in the first or second memory, based on a selected language, thereby outputting character signals of a language for subtitle processing selected from multi-languages to be used in multilingual character subtitle processing on the basis of font data, at least some of which are recorded in the optical disc,
wherein the first and second font data are separate from the characters of the selected language before the outputting step outputs the characters of the selected language.
8. The character display apparatus according to claim 7, wherein the first memory is a random access memory and the second memory is a read only memory.
9. A character display method for of controlling an optical disc player, the method comprising:
selecting a language for character subtitle processing from multi-languages multiple languages;
detecting if a first font data is recorded on a disc;
separating said first font data from other data read from a the disc if the first font data is recorded on the disc;
storing the separated first font data in a first memory area, a second font data being stored in a second memory area, wherein the first and second memory areas are separated from one another; and
selectively generating character signals from the stored font data or from predetermined font data stored in a second memory, thereby outputting character signals of afor characters of the selected language for subtitle processing selected from multi-languages to be used in the multilingual character subtitle processing to have a font defined by the first font data if the first font data recorded on the optical disc is selected and to have a font defined by the second font data if the second font data stored in the second memory area is selected on the basis of font data, at least some of which are recorded in the optical disc,
wherein the first and second font data are separate from the characters of the selected language before the generating step outputs the character signals of the selected language.
10. The character display apparatus according to claim 9, wherein said generating step includes generating the character signals from the predetermined font data if the selected language does not correspond to the stored font data in the first memory.
11. A system for generating character signals for a selected language of a subtitle recorded in an optical disc, said optical disc including at least a predetermined area on which a font data for generating character signals to be used in multilingual subtitle processing are located, the system comprising:
an optical pickup to read recorded data including the font data to be used in the multilingual subtitle processing on the optical disc;
a data processor to detect if the recorded data includes first font data to be used in the character subtitle processing and to process the first font data, and to separate the first font data from the detected recorded data if the first font data is recorded on the optical disc read from the optical pickup;
a first memory area to store the separated first font data;
a second memory area to store predetermined a second font data to be used in the character multilingual subtitle processing, wherein the first and second memory areas are separated from one another;
a character generator to generate the character signals for characters of the selected of a language for the character subtitle processing from the first or second stored font data; and
a controller to cause the character generator to selectively generate the character signals for the characters of the selected language to have a font defined by the first font data if the first font data recorded on the optical disc is selected and to have a font defined by the second font data if the second font data stored in the second memory area is selected from the font data stored in the first or second memory, based on a selected language, thereby outputting character signals of a language for subtitle processing selected from multi-languages to be used in multilingual subtitle processing on the basis of font data, at least some of which are recorded in the optical disc,
wherein the first and second font data are separate from the characters of the selected language before the controller outputs the character signals of the selected language.
12. An apparatus for an additional contents display of an optical disc player, the apparatus comprising:
a detector to detect additional contents data associated with a main title of an optical disc, to detect if the additional contents data include a first font data, and to separate the first font data from the detected additional contents data if the additional contents data includes the first font data;
a first memory area to store said additional contents data;
a second memory area to store a second font data , wherein the first and second memory areas are separated from one another;
a processor to process said additional contents data stored in said first memory to generate specific presentation data; and
a controller to control the processor to selectively process said additional contents data to display a specific content associated with said main title by using said specific presentation data and to have a font defined by the first font data if the first font data on the optical disc is selected and to have a font defined by the second font data if the second font data stored in the second memory area is selected,
wherein the first and second font data are different than character data of the specific presentation data.
13. The apparatus according to claim 12, wherein said first memory is a random access memory.
14. The apparatus according to claim 12, wherein said second font data is stored in a second memory, the second memory being a read only memory.
15. The apparatus according to claim 12, wherein said processor is a character generator to generate character signals for characters for displaying a selected language on the basis of said first or second font data.
16. A method for an additional contents display of an optical disc player, the method comprising:
detecting additional contents data associated with a main title of an optical disc, and detecting if the additional contents data include a first font data;
separating the first font data from the detected additional contents data if the additional contents data includes the first font data;
storing said additional contents data in a first memory area, a second font data being stored in a second memory area, wherein the first and second memory areas are separated from one another;
processing said stored additional contents data to selectively generate specific presentation data to have a font defined by the first font data if the first font data on the optical disc is selected and to have a font defined by the second fond data stored in the second memory area is selected; and
outputting the specific presentation data for displaying a specific content associated with said main title by using said specific presentation data,
wherein the first and second font data are different than character data of the specific presentation data.
17. The method according to claim 16, wherein said first memory is a random access memory.
18. The method according to claim 16, wherein said second font is stored in a second memory, said second memory being a read only memory.
19. The method according to claim 16, wherein said processing is performed to generate character signals for characters for displaying a selected language on the basis of said first or second font data.
20. The method according to claim 16, further comprising:
reproducing video management information from the optical disc,
wherein the video management information includes information indicating whether or not the first font data is recorded on the optical disc.
21. The method according to claim 16, wherein the video management information further includes information on a location of the first font data on the optical disc.
22. The apparatus according to claim 12, further comprising:
a pickup unit to reproduce video management information from the optical disc, the video management information including information indicating whether or not the first font data is recorded on the optical disc.
23. The apparatus according to claim 12, wherein the video management information further includes information on a location of the first font data on the optical disc.
24. The apparatus according to claim 12, wherein said specific presentation data is text subtitle for the main title.
25. The method according to claim 16, wherein said specific presentation data is text subtitle for the main title.
US10606362 1996-06-21 2003-06-26 Apparatus and method for an additional contents display of an optical disc player Expired - Lifetime USRE42441E1 (en)

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KR19960022891A KR100218434B1 (en) 1996-06-21 1996-06-21 Character displaying device and method in dvd
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US08878600 US6253221B1 (en) 1996-06-21 1997-06-19 Character display apparatus and method for a digital versatile disc
US10606362 USRE42441E1 (en) 1996-06-21 2003-06-26 Apparatus and method for an additional contents display of an optical disc player

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US11330424 USRE44382E1 (en) 1996-06-21 2006-01-12 Character display apparatus and method for a digital versatile disc
US11902929 USRE44651E1 (en) 1996-06-21 2007-09-26 Apparatus and method for an additional contents display of an optical disc player

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US11330424 Expired - Lifetime USRE44382E1 (en) 1996-06-21 2006-01-12 Character display apparatus and method for a digital versatile disc
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USRE44651E1 (en) 2013-12-17 grant
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KR100218434B1 (en) 1999-09-01 grant
KR980004875A (en) 1998-03-30 application

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