US 6,308,003 B1 · Method of recording image data and method of reproducing information from optical disk

Abstract

An optical disk recording thereon compressed moving picture data and an optical disk reproduction apparatus each capable of easily effecting trick play such as high speed reproduction and a retrieval operation at a high speed. Additional information necessary for trick play is recorded in an arbitrary area of an optical disk such as a TOC (Table of Contents) or a leading sector (sector 0) of the disk, and a sector address is added to each sector. To conduct trick play, an I picture, a P picture and a B picture contained in a GOP layer inside a bit stream of compressed image data are extracted and reproduced in accordance with a reproduction speed by looking up a trick play table.

Claims4

Dependent claims

A method of recording image data in an optical disk, comprising:

arranging said image data in sectors;
recording sectors of said image data to the optical disk, in a compressed data format having a variable transfer rate;
recording a sector address in each of said sectors in said optical disk;
and
recording in said optical disk a table containing information correlating said sector addresses and time information of the compressed image data, a relationship between said sector addresses and said time information of the compressed image data being inconstant;
wherein compressed image data associated with a desired time information can be selectively reproduced by looking up information in said table correlating said sector addresses and said time information.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

09/429,040Filed 29 Oct 1999 · division

Priority

JP 7-03646124 Feb 1995

Granted

23 Oct 2001

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04N 9/8042
Involving pulse code modulation of the colour picture signal components: involving data reduction
G11B 20/1251
On discs: for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
G11B 27/005
Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel: reproducing at a different information rate from the…
G11B 27/105
Programmed access in sequence to addressed parts of tracks of operating record carriers: of operating discs

Family

Application08/595,789Parent of this continuation · filed 2 Feb 1996

Application08/932,585Parent of this continuation · filed 17 Sep 1997

Application09/172,254Parent of this division · filed 14 Oct 1998

US 6,002,834 AParent of this division

Application09/172,254Parent of this continuation

US 6,009,585 AParent of this continuation

US 6,009,237 ARelated patent

US 6,308,003 B1This patent

From the US filing history. Foreign family members aren’t listed.

Method of recording image data and method of reproducing information from optical disk

Life of this patent

Method of recording image data and method of reproducing information from optical disk

Life of this patent

Abstract

Claims4