Optical disk recording device for producing disks adapted for direct access reproduction and a direct access reproducing method thereof

• US 6,694,089 B2
• Filed: 12/09/1998
• Issued: 02/17/2004
• Est. Priority Date: 12/31/1997
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Hee-Wan, Shim, Jae-Seong
• Primary Examiner(s): Tran, Thai
• Assistant Examiner(s): CHIEU, PO LIN
• Application Number:
  US09/208,015
• Publication Number:
  US 20030049018A1
• Time in Patent Office: 1,896 Days
• Field of Search: 386/4, 386/45, 386/69-70, 386/64, 386/55, 386/125-126, 345/700, 345/701
• US Class Current: 386/329
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/2575 DVD-RAMs
• CPC Class Codes: G11B 2220/65 wherein solid state memory is used for storing indexing information or metadata
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier
• CPC Class Codes: G11B 27/326 used signal is a video-frame or a video-field (P.I.P.)
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 5/926 by pulse code modulation H04N5/919 takes precedence
• CPC Class Codes: H04N 9/804 involving pulse code modulation of the colour picture signal components

Abstract

An optical disk recording device providing disks adapted for direct access reproduction and a direct access reproducing method thereof. A recording location of a disk at a user-selected direct access unit time or a user-selected time point is stored as a reproduction starting address. Prepared pictures or pictures selected by a user during recording data on the disk are recorded as choice menus on the disk. A direct access table is generated in which reproduction starting addresses are cross-referenced with recording locations of the choice menus. The direct address table is recorded in a specific area of the disk. During reproduction, the direct access table is read and the choice menus are read from the disk according to the recording locations of the choice menus included in the direct access table. A direct access menu picture is generated and displayed. Data at a recording location of the disk corresponding to the reproduction starting address of a user-selected choice menu is reproduced in response to a user'"'"'s selection.

Claims

1. An optical disk recording device comprising:

an audio encoder encoding audio data to be recorded on an optical disk;

a video encoder encoding video data to be recorded on the optical disk;

a mixer mixing the outputs of the audio and video encoders and outputting data to be recorded on the optical disk;

a memory prestoring a plurality of pictures;

a switch selectively selecting one of the outputs of the mixer and the memory;

a channel encoder channel-encoding the output of the switch and outputting bit streams;

a laser driver driving a light source of an optical pickup according to the bit streams received from the channel encoder, and recording the bit streams on the optical disk;

a random number generator generating random numbers;

a timer generating an interrupt signal upon passage of a preset time unit; and

a microcontroller that;

sets a direct access unit time in the timer;

activates the timer when data starts to be recorded on the disk;

stores a current recording location of the disk as a reproduction starting address upon generation of the interrupt signal;

sequentially reads one of the plurality of pictures based on a random number from the random number generator;

records the picture as a choice menu on the optical disk after the data has been completely recorded on the disk;

generates a direct access table in which reproduction starting addresses are cross-referenced with the recording locations of the choice menus on the disk; and

records the direct access table at a specific area on the disk.

2. The optical disk recording device according to claim 1, wherein the specific area is a lead-in area on the optical disk.

3. An optical disk recording device comprising:

an audio encoder encoding audio data to be recorded on an optical disk;

a video encoder encoding video data to be recorded on the optical disk;

a mixer mixing the outputs of the audio and video encoders and outputting data to be recorded on the optical disk;

a memory storing pictures from the video data stored directly from the video encoder without alteration;

a switch selecting one of the outputs of the mixer and the memory;

a channel encoder channel-encoding the output of the switch and outputting bit streams;

a laser driver driving a light source of an optical pickup according to the bit streams received from the channel encoder, and recording the bit streams on the optical disk;

an address generator generating a storage address in the memory;

a timer generating an interrupt signal upon passage of a preset unit time; and

a microcontroller;

setting a user-selected direct access unit time in the timer;

activating the timer when data starts to be recorded on the disk;

storing a current recording location of the disk as a reproduction starting address and the current picture in the memory according to an address designated by the address generator upon generation of the interrupt signal;

sequentially reading the pictures from the memory;

recording the pictures as choice menus on the optical disk when data is completely recorded on the disk;

generating a direct access table in which reproduction starting addresses are cross-referenced with the recording locations of the choice menus on the disk; and

recording the direct access table at a specific area on the optical disk.

4. The optical disk recording device according to claim 3, wherein the specific area is a lead-in area on the disk.

5. An optical disk recording device comprising:

an audio encoder encoding audio data to be recorded on an optical disk;

a video encoder encoding video data to be recorded on the optical disk;

a mixer mixing the outputs of the audio and video encoders and outputting data to be recorded on the optical disk;

a memory storing a picture received and stored directly from the video encoder without alteration;

a switch selecting one of the outputs of the mixer and the memory;

a channel encoder channel-encoding the output of the switch and outputting bit streams;

a laser driver driving a light source of an optical pickup according to the bit streams received from the channel encoder and recording the bit streams on the optical disk;

an address generator generating a storage address in the memory; and

a microcontroller;

storing a current recording location of the disk, as a reproduction starting address, and the current picture in the memory according to an address designated by the address generator upon user selection of a choice menu;

sequentially reading the pictures from the memory;

recording the video data as choice menus on the optical disk after the data has been completely recorded on the disk;

making a direct access table in which reproduction starting addresses match with the recording locations of the choice menus on the disk; and

recording the direct access table at a specific area on the optical disk.

6. The optical disk recording device according to claim 5, wherein the specific area is a lead-in area on the disk.

7. A method of reproducing data from a disk, comprising:

reading a direct access table from the disk;

reading choice menus from the disk according to random recording locations of the choice menus included in the direct access table;

displaying the choice menus according to pictures from video data, the choice menus being stored directly from the video encoder without alteration in only one area of the disk; and

reproducing data from the recording location of the disk corresponding to the reproduction starting address of a choice menu selected by a user from the displayed choice menus.

8. The method according to claim 7, wherein each choice menu and a time corresponding to the recording location of the choice menu are displayed together in the displaying.

9. A recording device comprising:

a data source supplying sequential data to be recorded on a disk;

an image source supplying images, each image associated with a location in the sequential data;

a controller that records the sequential data on the disk along with the images and a table relating each recorded image to an associated location in the sequential data, and the table relating, according to random numbers, each said recorded image to the associated location in the sequential data to select one of a plurality of pre-stored images from the image source for associating with each location; and

a random number generator that outputs random numbers to the controller.

10. The recording device according to claim 9, wherein the image source is a memory containing the plurality of pre-stored picture images.

11. The recording device according to claim 9, further comprising a selecting mechanism selecting the locations in the sequential data to which an image is to be associated.

12. The recording device according to claim 11, wherein the selecting mechanism is a timer which repeatedly issues a signal to the controller upon expiration of a predetermined time period during recording of the sequential data.

13. The recording device according to claim 11, wherein the selecting mechanism is an input mechanism, responsive to a user, which, when activated by the user during recording of the sequential data, issues a signal to the controller.

14. The recording device according to claim 9, wherein the image source is a memory storing part of the sequential data and wherein the image provided for each location in the sequential data is a copy of the sequential data at that location.

15. The recording device according to claim 14, further comprising a selecting mechanism for selecting the locations in the sequential data to which an image is to be associated.

16. The recording device according to claim 15, wherein the selecting mechanism is a timer which repeatedly issues a signal to the controller upon expiration of a predetermined time period during recording of the sequential data.

17. The recording device according to claim 15, wherein the selecting mechanism is an input mechanism, responsive to a user, which, when activated by the user during recording of the sequential data, issues a signal to the controller.

18. The recording device according to claim 9, wherein the sequential data is audio/video data.

19. The recording device according to claim 9, wherein the disk is an optical disk.

20. The recording device according to claim 9, further comprising:

a switch connected to the data source and the image source, the switch, under the control of the controller, selects the output of the data source or the image source to record on the disk.

21. The recording device according to claim 20, wherein the controller in a first stage causes the switch to select the output of the data source to record the sequential data on the disk and in a second stage causes the switch to select the output of the image source to record the images to be associated with a location in the sequential data onto the disk.

22. The recording device according to claim 20, wherein during the first stage the controller:

records an address, in the image source, for an image to be associated with a location in the sequential data during recording of the sequential data when a location to have an associated image is being recorded; and

during the second stage sequentially outputs the images from the image source using the addresses recorded in the first stage, generates a table cross-referencing the images to the locations in the sequential data and records the table on the disk.

23. A playback device for playing back sequential data on a disk comprising:

an input device under a users control;

an output section that reads and plays back the sequential data on the disk; and

a controller that;

reads a table cross-relating random locations in the sequential data to menu items on the disk; and

displays the menu items according to pictures from video data, the menu items being stored directly from the video encoder without alteration in only one area of the disk;

responsive to the input device, causes the output section to play back the sequential data from a location in the sequential data related to a menu item selected by the input device.