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EP0841665A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

System and method for determining representative frames of video captured by a video camera

Assignee: Sharp Corp
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Filing: 1997-11-06
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Granted: —
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Expires: 2017-11-06
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Abstract

Abstract A system and method of determining representative frames (56) of a video sequence to form a visual table of contents for a video tape (34) is disclosed. A representative frame is identified on the occurence of an event, such as the beginning of a recording sequence, which may follow a record command, a pause-release command, some form of special effect command, or a user-initiated marking command. The representative frame, and location data associated therewith, may be marked along the length of a video tape (34) in a camcorder (12) or VCR, or, the representative frame (56) may be identified and stored, along with the location data therefor, on a MIC (18). In the case where the representative frame location data is stored on the tape (34), a scanning mechanism (22) is provided for scanning the recorded video tape to locate the representative frames (56). In either form of the invention, multiple representative frames and their location data are placed in a storage mechanism (24), either temporarily or permanently, and then recorded at a single location, either at the beginning of the video tape (34) or in the MIC (18). A peripheral storage mechanism (28) may also be provided, in the form of a computer, which may be used to add additional information to the representative frame (56), and which may also be used in editing the video tape (34).

Inventors

  • 👤 Muhammed Ibrahim Sezan
  • 👤 Shawmin Lei
  • 👤 Jeffrey Brian Sampsell

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 12:05
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/11; G11B27/02; G11B27/031; G11B27/032; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B27/32; G11B27/326; G11B27/327; G11B27/328; H; H04; H04N; H04N5/00; H04N5/76; H04N5/765; H04N5/77; H04N5/772; G11B2220/00; G11B2220/40; G11B2220/41; G11B2220/60; G11B2220/65; G11B2220/652; G11B2220/655; G11B2220/90

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 88 words
A system (10) for determining representative frames (56) of a video sequence captured on a video tape (34) comprising: a marking module (14) for marking and identifying the location, on a video tape (34), upon the occurence of a predetermined event, thereby to identify a representative frame (56) associated with the event on the recorded video tape (34) and to generate location data therefore; a storage mechanism (24) for storing plural representative frames and location data associated therewith; and a recording mechanism (13) for recording plural representative frames.
Claim 2
Dependent Claim 37 words
The system (10) of claim 1 which further includes a scanning mechanism (22) for scanning said recorded video tape (34) having said representative frames (56) marked thereon to retrieve said representative frame and said location data therefrom.
Claim 3
Dependent Claim 38 words
The system (10) of claim 1 wherein said marking module (14) is located in a camcorder (12) and said scanning mechanism (22), said storage mechanism (24) and said recording mechanism (13) are located in a docking station (20).
Claim 4
Dependent Claim 35 words
The system (10) of claim 1 wherein said marking module (14) is located in a camcorder (12) and said storage mechanism (24) and said recording mechanism (13) are located in a video tape cassette (16).
Claim 5
Dependent Claim 30 words
The system (10) of claim 1 wherein said marking module (14), said scanning mechanism (22), said storage mechanism (24) and said recording mechanism (72) are located in a camcorder (12).
Claim 6
Dependent Claim 38 words
The system (10) of claim 1 wherein said marking module (14) is located in a camcorder (12) and said scanning mechanism (22), said storage mechanism (24) and said recording mechanism (13) are located in a video tape recorder.
Claim 7
Dependent Claim 21 words
The system (10) of claim 1 wherein plural representative frames and said location data therefore are recorded on the video tape.
Claim 8
Dependent Claim 19 words
The system (10) of claim 1 wherein a reference mark is recorded on said tape in VAUX (49) sector.
Claim 9
Dependent Claim 20 words
The system (10) of claim 1 wherein a reference mark is recorded on said tape in a sub-code sector (50).
Claim 10
Dependent Claim 25 words
The system (10) of claim 1 wherein said representative frame and said location data are recorded in a memory unit in a video cassette (16).
Claim 11
Dependent Claim 25 words
The system (10) of claim 1 wherein said representative frame and said location data are recorded on said memory unit in a maker's optional area.
Claim 12
Dependent Claim 47 words
The system (10) of claim 1 wherein said marking module (14) is located in a camcorder (12) and said scanning mechanism (22), said storage mechanism (24) and said recording mechanism (13) are located in a docking station (20), and which further includes a peripheral storage mechanism (26).
Claim 13
Dependent Claim 17 words
The system (10) of claim 1 wherein said predetermined event is the beginning of a recording sequence.
Claim 14
Dependent Claim 35 words
The system of claim 13 wherein said predetermined event is taken from the group of events consisting of pressing the record button, releasing the pause button, adding a special effect and initiating an event-specific signal.
Claim 15
Dependent Claim 35 words
The system (10) of claim 1 which includes a re-sizing mechanism (23, 68) for re-sizing the representative frames (56) so that plural representative frames (86) are displayed as a single multiple image video frame (84).
Claim 16
Dependent Claim 16 words
The system of claim 15 wherein said multiple image video frame (86) includes location data (90).
Claim 17
Independent Claim 80 words
A method for generating a multiple image representative frame comprising: marking the location of a representative frame (56) of video data on a video tape (34) on the occurence of a predetermined event; identifying location data associated with each representative frame (56); storing the representative frames and the location data associated therewith in an index frame memory; merging representative frames and the location data associated therewith into a single multiple image video frame; and recording the multiple image video frame.
Claim 18
Dependent Claim 37 words
The method of claim 17 which further includes scanning a recorded video tape (34) for representative frames and location data and wherein said recording step includes recording the multiple image video frame onto the video tape (34).
Claim 19
Dependent Claim 25 words
The method of claim 18 wherein said recording includes recording the multiple image video frame into a memory unit (18) in a video cassette (16).

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