Video library system and a method therefor
AssigneeSamsung Electronics Co., Ltd.
InventorJae C. Yoo
Life of this patent
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Abstract
A video library system in an apparatus using a video tape informs of index information about the video tape, and a method for embodying the system is provided. A library corresponding to an index code loaded in a vertical blanking period of a composite video signal is received from a memory to a microcomputer to display on a screen during playing, and the index code received from the memory to the microcomputer is increased to be combined with the composite video signal in an adder during recording, thereby capable of recording and reproducing index information in the vertical blanking period without requiring a label, VISS or VASS.
Claims6
A method for operating a video library system for recording and reproducing index information during corresponding recording and play modes of operation, said index information including a tape index code and an index code stored in a vertical blanking period of a video signal, and selecting a desired portion of said video signal for playback using a library accessible from a memory via a microcomputer and corresponding to said index information, said method comprising the steps of:
- (a) detecting said vertical blanking period from said video signal when a video tape is newly inserted;
- (b) checking for existence of said index code in a vertical blanking signal of said vertical blanking period when said vertical blanking period is detected;
- (c) reading out said library corresponding to said index code from said memory using said microcomputer;
- (d) checking for a start of recording when said video tape is not newly inserted;
- (e) determining whether or not said system is in a recording mode of operation after increasing said index code when said start of recording is confirmed;
- (f) checking for an indication of insertion of a new video tape when said recording mode is selected;
- (g) generating said index code permitting display on a screen after increasing said tape index code when said video tape is the new video tape;
- (h) displaying said library on said screen after performance of said steps (a), (c) and (e), thereby providing an on-screen display;
- and
- (i) searching for the desired portion of said video signal corresponding to the received index code, after confirming a content of said library displayed on said screen.
A method for operating a video library system for recording and reproducing index information during respective recording and play modes of operation, which index information includes a tape index code and an index code stored with respect to a vertical blanking period of a video signal, for selecting a desired portion of a video signal on a video tape using a library, contained in a memory and accessible via a microcomputer, corresponding to said index information, said method comprising:
- (a) a subroutine for processing a newly inserted video tape, comprising the steps of:
- (a)(i) performing an intermittent play mode of operation;
- (a)(ii) determining whether said vertical blanking period of said video signal exists;
- (b) a subroutine for processing said index code of said video tape, comprising the steps of:
- (b)(i) checking for the existence of said index code during said vertical blanking period when said vertical blanking period is detected during said step (a)(ii);
- (b)(ii) setting a flag indicative of whether said newly inserted video tape is a new video tape or an old video tape;
- (b)(iii) reading out said library corresponding to said index code from said memory via said microcomputer;
- (c) a subroutine for recognizing a recording mode of operation, comprising the steps of:
- (c)(i) checking for start of recording when said video tape is not said newly inserted video tape;
- (c)(ii) incrementing said index code by 1 when said start of recording is detected;
- and
- (c)(iii) determining whether or not said system is in a recording mode of operation after performing one of said steps (c)(i) and (c)(ii);
- (d) a subroutine for generating said index information, comprising the steps of:
- (d)(i) checking for said flag set during performance of said step (b)(ii);
- (d)(ii) incrementing said tape index code by 1 when said flag indicates that said new video tape is loaded;
- (d)(iii) supplying said index information using said microcomputer;
- (e) a subroutine for displaying said library on a display screen following performance of subroutines (a), (b) and (c);
- and
- (f) a subroutine for searching for the desired portion of the video signal corresponding to a respective received index code, after confirming a content of said library displayed on said screen.
Dependencies are inferred from the claim text.