KR970076178A - Quick navigation method and circuit in a video CD player - Google Patents

Abstract

The total time of a video CD currently sold is approximately 60 minutes.

However, if the user wants to stop the playback of the movie and watch the video again, the video CD player must start playback of the track from the beginning, so the general navigation key must be searched until the desired scene is found.

However, since the general search function has a short search time, it takes a long time to find a desired scene.

In order to solve this problem, according to the present invention, when a fast forward key or a fast reverse key is pressed when a track is being played back, the time between the minimum time 0 and the playback time of the currently playing track is displayed on the screen, So that the desired scene can be reproduced in a short time during the track reproduction of the video CD.

Description

Quick navigation method and circuit in a video CD player

Since this is a trivial issue, I did not include the contents of the text.

Figure 1 is a block diagram of a system for the present invention.

2a and 2b are flowcharts according to the present invention,

Figure 2a is a flow chart of a key control routine.

2b is a flowchart relating to a timer interrupt routine.

Claims (2)

A flag setting step of determining from the front CPU whether a fast forward key is in a pressed state and a flag of a fast forward key in a pressed state if the key is pressed; Determining whether a fast forward flag is set after setting the flag, and comparing whether the fast forward flag is less than the maximum time of the track if the flag is set; A search time setting step of setting a current play time as a fast play time; Determining whether a fast reverse key is in a pressed state and setting a flag of a fast reverse key if the pressed state is a press state; Determining whether a fast reverse flag is set after the setting, and comparing whether the set value is greater than "0 " A search setting step of setting a current playback time as a fast search time; An Els process for elsing if the fast reverse flag is not set; Determining whether the backward key is in the released state or not, and releasing the flag of the fast forward / backward key if the backward key is not in the released state; Determining whether a quick select key is in a pressed state and confirming whether a fast forward and backward key flag is set in a pressed state; A routine for changing a playback position by a fast seek time and performing a routine; And an Els process for elsing if the quick selection key is not in a pressed state. A front CPU for informing the key information and receiving information about the screen display unit from the MPEG CPU; An MPEG CPU for taking a plurality of commands corresponding to the key pressed from the front CPU; A ROM containing a program for the operation of the MPEG CPU; A RAM for storing data of an MPEG CPU; A battery for supplying auxiliary power to the RAM so that data of the MPEG CPU is not erased when the power supply is interrupted; An MPEG decoder for decoding MPEG data from a CD player and outputting the MPEG data; A video / audio D / A converter for converting digital data into analog data; A CD player for reading and outputting contents of a disc loaded by the operation of the mechanical CPU from a designated position of the MPEG CPU; And a mechanism for taking an action of inserting or removing a disc at a designated position from a mechanical CPU in accordance with an instruction in a CD player. ※ Note: It is disclosed by the contents of the first application.