Information storage medium, video recording method and information reproducing device

• US 20020085833A1
• Filed: 09/25/2001
• Published: 07/04/2002
• Est. Priority Date: 12/28/2000
• Status: Active Grant

• Current Assignee: Konami Digital Entertainment Company Limited (Konami Holdings Corp.)
• Original Assignee: Konami Corporation (Konami Holdings Corp.)
• Inventors: Miyauchi, Fumito
• Granted Patent: US 7,313,319 B2
• Time in Patent Office: Days
• US Class Current: 386/96
• CPC Class Codes: A63F 2300/203 Image generating hardware
• CPC Class Codes: G10H 1/0041 in coded form
• CPC Class Codes: G10H 2220/141 Games on or about music, i.e. based on musical knowledge, e.g. musical multimedia quizzes
• CPC Class Codes: G10H 2250/595 ADPCM [adaptive differential pulse code modulation]

Abstract

The video data including the unit compressed video data, each reproducible independently of each other, are recorded on the video data recording areas as the divided video data. The divided video data includes one or more integer number of unit compressed video data, which total data amount is not more than a predetermined data amount. The divided video data is recorded in the video data recording areas such that the head thereof coincides with the head of the sector on the information storage medium. Therefore, at the time of reproduction, by reading out one divided video data, the unit compressed video data can be obtained from the head of the divided video data thus read out. Thus, video data may be quickly reproduced by a simple processing even at the time of the special reproduction.

Claims

1. An information storage medium for recording video data including a plurality of unit compressed video data successive on a time axis and each of which is reproducible independently of each other, the medium comprising:

a plurality of video data recording areas, each of the plurality of video data recording areas recording divided video data including one or more integer number of unit compressed video data successive on the time axis, a total data amount of the unit compressed video data being not more than a predetermined data amount, wherein the divided video data is recorded in each of the plurality of video data recording area such that a head of the divided video data coincides with a head of a sector on the information storage medium.

2. An information storage medium according to claim 1, further comprising a table recording area for recording a table indicating correspondence between time information of the divided video data and positional information of the sectors on which the unit compressed video data is recorded.

3. An information storage medium according to claim 1, wherein the pre determined data amount comprises a storage capacity of a reproduction device which reproduces the video data re corded on the storage medium.

4. A method of recording video data on an information storage medium, the video data including a plurality of unit compressed video data successive on a time axis and each of which is reproducible independently of each other, the method comprising the steps of:

a step of receiving the video data and dividing the received video data into a plurality of unit compressed video data;

a step of combining one or more integer number of unit compressed video data successive on a time axis to produce divided video data such that a total data amount of the unit compressed video data is not more than a predetermined data amount; and

a step of recording each of the divided video data on the information storage medium such that a head of the divided video data coincides with a head of a sector on the information storage medium.

5. An information reproducing device for reproducing video data from an information storage medium on which the video data, including a plurality of unit compressed video data successive on a time axis and each of which is reproducible independently of each other, is recorded as a plurality of divided video data each configured by a combination of the unit compressed video data such that that ahead of the divided video data coincides with a head of a sector on the information storage medium, the device comprising:

a buffer memory;

a storing unit for reading out the video data from the information storage medium by the unit of the divided video data and storing the video data into the buffer memory; and

a video reproducing unit for decoding the unit compressed video data included in the divided video data stored in the buffer memory to reproduce the video data.

6. An information reproducing device according to claim 5, wherein the information storage medium further carrying a table indicating correspondence between time information of the divided video data and position information of a sector on which the unit compressed video data is recorded, wherein the information reproducing device further comprises:

a receiving unit for receiving a designated reproduction position; and

a determining unit for determining sector position corresponding to the designated reproduction position, wherein the storing unit stores the unit compressed video data from the designated sector position into the buffer memory.

7. An information reproducing device according to claim 6, wherein the information storage medium further carrying music data independent of the video data, the divided video data including time information of the divided video data, wherein the information reproducing device further comprising:

a music reproducing unit for obtaining music data corresponding to the designated reproduction position from the information storage medium and for reproducing the music data; and

a synchronization control unit for controlling synchronization of the reproduction of the music data by the music reproducing unit and the reproduction of the video data by the video reproducing unit by comparing reproduction position information currently reproduced by the music reproducing unit with the time information in the divided video data.

8. An information reproducing device further comprising:

a unit for receiving a reproduction position change instruction inputted by a game player;

a unit for determining a changed music reproduction position corresponding to the reproduction position after the change based on the change instruction;

a unit for determining a changed video reproduction position corresponding to the changed music reproduction position by referring to the table; and

a unit for controlling the music reproduction unit to reproduce the music data from the changed music reproduction position and controls the video reproduction unit to reproduce the video data from the changed video reproduction position.