Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1999-06-14
2003-08-19
Boccio, Vincent (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C348S143000, C348S159000
Reexamination Certificate
active
06608962
ABSTRACT:
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims all benefits accruing 35 U.S.C.§119 from an application entitled VCR PERFORMING HIGH-SPEED SEARCHING OPERATION earlier filed in the Korean Industrial Property Office on Jun. 23 , 1998, and there duly assigned Serial No.98-23759 by that office.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a video cassette recorder (VCR) and related method by means of which a high-speed searching operation is performed and, more particularly, to a VCR and related method for carrying out a high-speed searching operation by automatically searching important information, such as desired time or alarm data, with a high speed when a user wants to search an image at a certain desired point in time among images recorded by a time-lapse VCR, thereby improving the user's monitoring efficiency.
2. Detailed Discussion of the Related Art
In general, a time-lapse VCR, which is an analog recording device for monitoring, repeatedly records and stops a plurality of video signals inputted from at least one video camera in a specific interval to reproduce images taken by the video camera later in a CCTV system. There are several methods of searching an image at a certain desired point in time among images recorded by the conventional time-lapse VCR. The first method is such that a user sequentially searches the image using a fast playback function while watching the images. The second method involves searching important data, such as alarm data, with a high speed using a VISS function, which is a method of inverting VCR control pulse to search specific image data. The third method involves encoding information such as channel information or time information, inserting it into the vertical blanking period where there is no video signal, and decoding it to search desired information when video signals are reproduced.
However, the above-mentioned conventional methods have the following problems. The first method cannot automatically search image data at a desired point in time. With the second method, the searching operation cannot be carried out based on time. In the third method, information should be searched while the video signals are slowly reproduced in the standard playback mode, and thus the searching operation cannot be performed in the high-speed playback mode of a VCR, thereby lengthening searching time.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a VCR for performing a high-speed searching operation, wherein the VCR automatically searches important information, such as desired time or alarm data, with a high speed when a user wants to search an image at a certain desired point in time among images recorded by a time-lapse VCR, thereby improving the user's monitoring efficiency.
To accomplish the object of the present invention, there is provided a VCR which can perform a high-speed searching process, the VCR including: a video signal input for outputting a video signal sent from a plurality of photographing sections; an encoder for encoding channel information and time information about the video signal, and for adding the encoded information to the vertical blanking interval of the video signal; a recording/reproducing section for recording the signal composed by the encoder or reproducing the recorded video signal; a decoder for extracting the channel information and time information inserted by the encoder from video signals outputted from the reproducing section, and for decoding them; a controller for inverting a control pulse at predetermined time intervals when the video signal is recorded, so as to record a point in time within the predetermined time intervals, for searching the recorded point in time within the predetermined time intervals in a high-speed mode based on the channel information and time information transmitted from the decoder when automatic searching is performed during reproduction, and for converting the mode of the VCR into a standard mode, starting from the searched point in time, when a desired point in time has been searched, so as to allow the video signal to be reproduced in the standard mode, and for controlling the entire system; and signal output for externally outputting the video signal sent from the reproducing
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory in nature, and are intended to provide further explanation of the invention as claimed.
REFERENCES:
patent: 4943854 (1990-07-01), Shiota et al.
patent: 5519549 (1996-05-01), Choi
patent: 5615017 (1997-03-01), Choi
patent: 5671009 (1997-09-01), Chun
patent: 6091884 (2000-07-01), Yuen et al.
patent: 405135433 (1993-06-01), None
Boccio Vincent
Bushnell , Esq. Robert E.
Samsung Electronics Co,. Ltd.
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