Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1996-12-05
1998-08-11
Chevalier, Robert
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 46, H04N 593, H04N 591
Patent
active
057939241
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a compiler system for compilation of a material in form of video signals recorded on a magnetooptical disk, for example.
BACKGROUND ART
Conventional video compiler systems used a magnetic tape to record video signals through VTR, and proceeded with compilation referring to desired compile points while reproducing the magnetic tape through VTR and detecting the compile points from the magnetic tape. To detect a desired compile point from a tape through VTR, users must repeat cue and review operations. Therefore, conventional video compiler systems were inefficient in operation and took time for compilation.
In view of the situation, there are recent compiler systems which use a random access storage device such as magnetooptical disk or hard disk to record video signals, and proceed with compilation referring to compile points while reproducing the storage device and detecting the compile points.
That is, a compiler system using a random access storage device, such as magnetooptical disk, consists of a computer, display, entry devices such as keyboard and mouse, and magnetooptical disk drive. Recorded on the magnetooptical disk are digital video signals used as a material. The computer may be either an exclusive one for compilation or a general purpose personal computer installed with a compiler program. A control panel is an entry device to assist jobs for compilation. To proceed with compilation using the aforementioned compiler system, images as a material is retrieved on the display. A user will search out a desired compile point from the material image, and proceeds with deletion, replacement of selective portions, or other jobs for compilation.
Recent developments in graphic user interface make it possible for users to use a mouse in compile operations with a compiler system using a random access storage device. Operation through a mouse is advantageous because any user can easily operate it without remembering complex commands.
A major job of compilation is to search for compile points in the frame-to-frame unit from a material which is typically of a volume lasting for decades of minutes to several hours. This way of operation is not easy only with operation of a mouse and a keyboard alone.
That is, a user must find out a position near a compile point from a material lasting for decades of minutes to several hours. When a mouse is used to do this, a scroll bar is shown on the display. The user moves the mouse pointer onto the cursor on the stroll bar and drags the cursor to an approximately desired position. However, the amount of movements of the mouse required for such operations is too large to minimize the time for compilation.
DISCLOSURE OF INVENTION
The invention provides a compiler system for compiling video signals recorded on a random access storage device, which is easy to operate and enables quick compilation.
The compiler system includes a recording medium storing a video signal used as a material and an operator means for effecting compile operations onto the material video signal on the recording medium, and the operator means comprises a first position designator means for designating an absolute position of the time axis of the material, and a second position designator means for designating a relative position from the absolute position of the material.
The system includes a position lever for designating the absolute position of the material video signal. Positions of the position lever are linearly proportional to absolute positions on the time axis of the material. Therefore, a user can easily jump to a compile point by operating the position lever. The system also includes a search dial for designating a position of the material by adjusting the amount of rotation of the dial. Since pictures are turned in accordance with the direction and amount of rotation of the dial, a user can easily access to a desired image to be found out.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a perspective view of a video compiler system to which the
REFERENCES:
patent: 5063470 (1991-11-01), Fukuzawa et al.
patent: 5621536 (1997-04-01), Kizu
Matsui Masafumi
Saito Koji
Chevalier Robert
Frommer William S.
Sony Corporation
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