Playback apparatus and playback method

• US 20030200452A1
• Filed: 05/29/2003
• Published: 10/23/2003
• Est. Priority Date: 05/28/1999
• Status: Active Grant

• Current Assignee: Hideki Matsushima, Kenji Tagawa, Masayuki Kozuka, Shinji Inoue, Teruto Hirota, Tomokazu Ishikawa
• Original Assignee: Hideki Matsushima, Kenji Tagawa, Masayuki Kozuka, Shinji Inoue, Teruto Hirota, Tomokazu Ishikawa
• Inventors: Matsushima, Hideki, Inoue, Shinji, Ishikawa, Tomokazu, Tagawa, Kenji, Kozuka, Masayuki, Hirota, Teruto
• Granted Patent: US 6,779,116 B2
• Time in Patent Office: Days
• US Class Current: 713/193
• CPC Class Codes: G06F 3/16 Sound input; Sound output speech processing G10L
• CPC Class Codes: G09G 2340/12 Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
• CPC Class Codes: G09G 3/2092 Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165
• CPC Class Codes: G09G 5/39 Control of the bit-mapped memory
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00253 wherein the key is stored on the record carrier
• CPC Class Codes: G11B 20/00492 wherein content or user data is encrypted
• CPC Class Codes: G11B 2220/61 wherein solid state memory is used for storing A/V content storing computer data in solid state memories G06F
• CPC Class Codes: G11B 2220/65 wherein solid state memory is used for storing indexing information or metadata
• CPC Class Codes: G11B 27/005 Reproducing at a different information rate from the information rate of recording for television signals H04N5/783
• 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: G11C 7/16 Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
• CPC Class Codes: H04N 1/00132 in a digital photofinishing system, i.e. a system where digital photographic images undergo typical photofinishing processing, e.g. printing ordering
• CPC Class Codes: H04N 1/00198 Creation of a soft photo presentation, e.g. digital slide-show
• CPC Class Codes: H04N 1/32112 in a separate computer file, document page or paper sheet, e.g. a fax cover sheet H04N1/32122 takes precedence
• CPC Class Codes: H04N 2201/3264 of sound signals

Abstract

A plurality of audio object (AOB) files and a plurality of picture object (POB) files are stored. Default Playlist Information and sets of Playlist Information each show an order in which AOBs stored in the plurality of AOB files are to be reproduced. The DPLGI includes DPLI_POB_SRPs that specify at least one POB to be displayed during the playback period of AOBs indicated by the playback order given in the Default Playlist Information. The TKGI includes TKI_POB_SRPs that specify at least one POB to be displayed only during the playback period of a particular AOB out of the AOBs indicated by the playback order given in the Default Playlist Information.

Claims

1. A playback apparatus for playing back data from a semiconductor memory card, wherein:

the semiconductor memory card contains;

an audio sequence including a plurality of audio objects;

a plurality of still image objects;

at least one piece of playback route information which indicates an order in which audio objects, out of the plurality of audio objects in the audio sequence, are to be played back;

at least one piece of first pointer information, wherein each of the at least one piece of first pointer information corresponds to a piece of the playback route information and specifies at least one still image object to be displayed when the audio objects in the order indicated by the corresponding piece of playback route information is played back; and

at least one piece of second pointer information, wherein each of the at least one piece of second pointer information corresponds to an audio object in the audio sequence and specifies at least one still image object that should be displayed during playback of the corresponding audio object;

said playback apparatus comprises;

a playback unit operable to play back audio objects in the audio sequence one at a time in the order indicated by the corresponding piece of playback route information;

a display unit operable to display the at least one still image object specified by the at least one piece of first pointer information throughout playback of the audio objects in the audio sequence; and

a control unit operable to cause said display unit to display the at least one still image object specified by the at least one piece of second pointer information throughout playback of a particular audio object corresponding to the at least one piece of second pointer information.

2. A playback apparatus as claimed in claim 1, wherein said control unit is further operable to cause the display unit to display a combined image produced by combining the at least one still image object specified by the at least one piece of second pointer information with the at least one still image object specified by the at least one piece of first pointer information.

3. A playback method for playing back data from a semiconductor memory card, wherein:

the semiconductor memory card contains;

an audio sequence including a plurality of audio objects;

a plurality of still image objects;

at least one piece of playback route information which indicates an order in which audio objects, out of the plurality of audio objects in the audio sequence, are to be played back;

at least one piece of first pointer information, wherein each of the at least one piece of first pointer information corresponds to a piece of the playback route information and specifies at least one still image object to be displayed when the audio objects in the order indicated by the corresponding piece of playback route information is played back; and

at least one piece of second pointer information, wherein each of the at least one piece of second pointer information corresponds to an audio object in the audio sequence and specifies at least one still image object that should be displayed during playback of the corresponding audio object;

said playback method comprises;

playing back audio objects in the audio sequence one at a time in the order indicated by the corresponding piece of playback route information;

displaying the at least one still image object specified by the at least one piece of first pointer information throughout playback of the audio objects in the audio sequence; and

controlling said displaying to display the at least one still image object specified by the at least one piece of second pointer information throughout playback of a particular audio object corresponding to the at least one piece of second pointer information.

4. A playback method as claimed in claim 3, wherein said controlling further controls said displaying to display a combined image produced by combining the at least one still image object specified by the at least one piece of second pointer information with the at least one still image object specified by the at least one piece of first pointer information.