Video compact disc having caption data recorded thereon and reproducing method and apparatus thereof

• US 5,666,451 A
• Filed: 12/29/1995
• Issued: 09/09/1997
• Est. Priority Date: 12/30/1994
• Status: Expired due to Fees

• Current Assignee: Daewoo Electronics Company Limited (Dayou Holdings Co.,Ltd.)
• Original Assignee: Daewoo Electronics Company Limited (Dayou Holdings Co.,Ltd.)
• Inventors: Kim, Jun-Sik
• Primary Examiner(s): Faile, Andrew
• Assistant Examiner(s): Boccio, Vincent F.
• Application Number:
  US08/580,940
• Time in Patent Office: 620 Days
• Field of Search: 358/335, 358/342, 358/322, 358/341, 360/18, 360/33.1, 348/468, 386/33, 386/45, 386/95-98, 386/104-106, 386/109, 386/111-112, 386/125, 386/126
• US Class Current: 386/222
• CPC Class Codes: G11B 19/02 Control of operating function, e.g. switching from recording to reproducing
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/3063 Subcodes
• CPC Class Codes: H04N 5/445 for displaying additional information H04N5/50 takes precedence
• CPC Class Codes: H04N 5/9203 using time division multiplex
• CPC Class Codes: H04N 5/9208 involving the use of subcodes
• CPC Class Codes: H04N 5/9264 using transform coding
• CPC Class Codes: H04N 5/9305 involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal

Abstract

A video compact disc having caption data recorded thereon and a method and an apparatus thereof selectively displays a plurality of caption data prepared in different languages during playback operation of either a video-song or a movie having a full motion picture. The plurality of caption data prepared with the different languages with respect to the same picture signal is recorded on a control data area included in the video compact disc, which is reproduced selectively in either on or off basis to display character information expressed via a language selected among the various languages us a user, and increasing the user'"'"'s pleasure and providing a video-song program and a movie program of high-functionality and high quality.

Claims

1. A video compact disc having caption data recorded thereon and including both a lead-in area having disc management information recorded thereon and a lead-out area for indicating a final section of a program area, said video compact disc comprising:

a program area having full motion picture video/audio information recorded thereon, and including a data area having a synchronizing signal, header data and MPEG-processed audio/video data respectively recorded thereon, a error correction code data area having error correction code data recorded thereon, and a control data area having compact disc graphics data recorded thereon,

said control data area including a subcode channel having a plurality of caption data recorded thereon prepared in different languages with respect to an identical picture signal, the plurality of caption data constituted in the unit of a pack read out by selecting one of the channels constituting said control data area, a plurality of said packs established in order to designate one of the languages by combining channels 0 and 1 in a data record field, said data record field having font data recorded therein a screen display position of which is designated by a column and a row.

2. A method for reproducing a video compact disc having caption data recorded thereon, said method comprising the steps of:

(i) judging whether or not said caption data is included in a control data area of a program area in said video compact disc when graphics data exists in said video compact disc;

(ii) performing a normal playback processing operation of full motion picture video and audio signals when it is determined in step (i) that said caption data is not included in said video compact disc;

(iii) inputting a selection control signal for selecting a kind of said caption data when it is determined in step (i) that said caption data is included in said video compact disc;

(iv) performing a playback processing operation of said caption data;

(v) judging whether or not a caption on signal for a screen display of said caption data is received;

(vi) displaying the full motion picture video signal on a screen of a display section when it is determined in step (v) that the caption on signal for the screen display of said caption data is not received;

(vii) performing an input operation for designating said caption data of a desired channel when it is determined in step (v) that the control signal for the screen display of said caption data is received;

(viii) mixing a reproduced video signal with said caption data of the channel selected in step (vii), and superimposing said caption data onto the full motion picture video signal; and

(ix) displaying the full motion picture video signal including said caption data constituted in step (viii) on the screen of said display section, and wherein said control data area including a subcode channel has a plurality of caption data recorded thereon prepared in different languages with respect to an identical picture signal, with the plurality of caption data constituted in the unit of a pack read out by selecting one of the channels constituting said control data area, with a plurality of said packs established in order to designate one of the languages by combining channels 0 and 1 in a data record field, and with said data record field having font data recorded therein a screen display position of which is designated by a column and a row.

3. An apparatus for reproducing a video compact disc having caption data recorded thereon, said apparatus comprising:

a control section for controlling a caption function set by a control panel section or controlling a normal playback process of said video compact disc when inputting a control signal with respect to the caption function set from said control panel section, inputting a channel selection signal for selecting a language to be displayed on a screen by the caption function, and inputting a control signal for driving the caption function when the system is on or off, and for providing a first and second control signals;

a servo circuit section for providing a first, second and third servo circuit signals in order to rotatably drive said video compact disc, and to search and control a target position for reproducing information from said video compact disc in response to the first control signal from said control section;

audio/video readout means for providing an audio/video readout signal by means of a laser beam to read out audio and video signals from said video compact disc which includes a lead-in area having disc management information recorded thereon, a program area having full motion picture video/audio information recorded thereon, said program area including a first area having a synchronizing signal, header data and MPEG-processed audio/video data respectively recorded thereon, a second data having error correction code data recorded thereon, and a third area having compact disc graphics data recorded thereon and having caption data prepared in different languages with respect to an identical picture data recorded on a subcode channel thereof and a lead-out area for indicating the final section of said program area;

an RF amplifying section for amplifying the audio/video readout signal supplied from said audio/video readout means, and for providing an amplified RF signal;

a CD digital signal processing section for digital-signal-processing the amplified RF signal supplied from said RF amplifying section, and for providing a first and second digital-processed CD signals;

a CD-ROM decoding section for extracting CD-ROM XA data from the first digital-processed CD signal in order to reproduce an MPEG audio/video signal which is processed by means of the MPEG algorithm from the first digital-processed CD signal supplied from said CD digital signal processing section, and for providing a decoded CD ROM signal;

an MPEG audio/video decoding section for restore-processing the decoded CD-ROM signal supplied from said CD-ROM decoding section, and for providing first decoded video signal and a second decoded audio signal respectively corresponding to the MPEG video and audio signals;

a compact disc graphics decoding section for decoding the second digital-processed CD signal supplied from said CD digital signal processing section in response to the second control signal supplied from said control section, and for reproducing to output a decoded compact disc graphics signal corresponding to the CDG data recorded on said third area of said video compact disc;

a superimposing processing section for superimposing the decoded compact disc graphics signal, which corresponds to the caption data supplied from said compact disc graphics decoding section, onto the first decoded video signal corresponding to the reproduced video signal supplied from said MPEG audio/video decoding section, and for providing a superimposing-processed video signal in which the caption data is superimposed onto the video signal;

a display control section for inputting the superimposing-processed video signal supplied from said superimposing processing section, and for providing a display control signal; and

a display section for inputting the display control signal supplied from said display control section and for displaying the picture signal in which the caption data is superimposed on the video signal.

4. The apparatus for reproducing a video compact disc having caption data recorded thereon as claimed in claim 3, wherein said first, second and third servo circuit signals are respectively a spindle motor control driving signal, a focusing control operation driving signal, and a tracking control operation driving signal.

5. The apparatus for reproducing a video compact disc having caption data recorded thereon as claimed in claim 3, wherein said caption data is recorded as the compact disc graphics data constituting said third area included in said video compact disc, and is recorded in the unit of a pack in order to make a selective playback operation possible by setting a channel in response to the first decoded video signal supplied from said MPEG video/audio decoding section.

6. The apparatus for reproducing a video compact disc having caption data recorded thereon as claimed in claim 3, wherein said first, second and third areas are respectively a data area, an error correction code data area and a control data area.

7. The apparatus for reproducing a video compact disc having caption data recorded thereon as claimed in claim 3, wherein said control section designates channels for said plurality of caption data prepared in different languages to permit said caption data to be smoothly outputted while the decoded compact disc graphics signal is outputted from said compact disc graphics decoding section in response to the second control signal supplied from said control section.