KR940001883B1 - Picture retrievaling method & apparatus for vcr - Google Patents

Abstract

The method performs a CUE or a REV (review) operation selectively during a FF or a REW operation to search snap frames. The method comprises the steps of: if a FF key or a REW key pushed again during FF or REW operation, stoping FF or REW operation to perform CUE or REV operation respectively and set a searching flag; if key is OFF state, checking the searching flag and previous steps; according to the results of the 3rd step, stoping CUE or REV operation to perform FF or REW operation respectively and reset the searching flag.

Description

Method and device for instant screen search of VCR

1 is a block diagram of a VCR screen retrieval apparatus for carrying out the method of the present invention.

2 is a flowchart showing a search method of the present invention.

* Explanation of symbols for main parts of the drawings

1: Key operation unit 2: Key discrimination circuit

3: Mode operation discriminating unit 4: Memory

5: Motor drive signal output circuit 6: Motor drive circuit

7: motor 8: signal control unit

9: Screen driving circuit

The present invention selectively performs a cue or review operation so that the screen can be searched during the fast forward (FF) or rewind (REW) operation during the playback of the VCR. The present invention relates to a method and a device for searching an instantaneous screen of a VCR, which makes it possible to search and view an instantaneous screen. Conventional VCR searches for the screen by operating the device in the cue or review mode when the user wants to find the desired screen, but currently when the user wants to find the desired screen by operating the device in the fast forward or rewind mode to drive the video tape at high speed. It is difficult to recognize the exact position (screen that the user wants to find) because the screen state of the driving position can not be identified, and there is a problem that the inconvenience of performing the device operation by checking after searching and playing.

In order to solve the conventional problems, the present invention enables the user to search the playback screen of the current tape driving position at the moment while performing fast forward or rewind, so that the user can accurately drive the video tape to the desired screen position and conveniently operate the equipment. It is an object of the present invention to provide a method and apparatus for searching an instantaneous screen of a VCR, which will be described below. Referring to the accompanying drawings, the configuration of a search apparatus according to the present invention will be described below.

That is, as shown in FIG. 1, the key control unit 1 equipped with all the key switches including cue, review, fast forward, and rewind operations of the VCR, and the key for searching and determining whether or not the key operation unit 2 is operated are searched. A discrimination circuit 2, a mode operation discriminating section 3 for performing device control suitable for the function of each key according to the key discrimination signal, a memory 4 storing data related to the device control, and a mode discrimination result. Accordingly, the motor drive signal output circuit 5 for outputting predetermined data for video travel suitable for cue, review, fast forward, and rewind playback is driven, and the motor 7 for operating the deck portion in accordance with the motor drive signal is driven. A motor driving circuit 6, a signal controller 8 for performing signal processing such that an image is displayed on the screen according to the mode decision result, and a screen driving circuit 9 for outputting an image suitable for the signal processing result on the TV screen. ) Is configured. According to the method of the present invention performed by the retrieval apparatus configured as described above, as shown in FIG. 2, when the fast rewinding key is turned on again during the fast rewinding operation by retrieving the key operated by the key operation unit 1, the fast forwarding operation is stopped. A first step of setting the search flag after performing the queue operation, a second step of stopping the rewind operation and setting the search flag after performing the review operation when the rewind key is turned on again during the rewind operation, and the key operation unit 1 In step 3), if the key is turned off, the search flag is set to determine whether the search flag is set, and if the result of the determination is set, a third process of determining whether a queue operation or a review operation is being performed; The fourth step of resetting the search flag after stopping the fast forwarding operation and performing the fast forwarding operation; And after performing the reverse operation takes place in a fifth process of resetting the search flag.

The operation and effect of the present invention thus made will be described in FIG. 2 with reference to FIG. When the user operates the key operation unit 1, a key operation signal is input to the key discrimination circuit 2 to determine which key is operated, and the discrimination result is input to the mode operation discriminating unit 3.

The mode operation determining unit 3 determines the current operation mode of the device (FF / REW, CUE / REV, STOP, PLAY, etc.) and determines whether the operated key is a fast forward key, a rewind key, or other function performing key. If the result of the determination is a fast forward key, it is determined whether the current operation mode of the device is fast forward. If the fast forwarding operation is not in progress, the motor 7 is driven through the motor signal output circuit 5 and the motor driving circuit 6 to operate the deck mechanism to fast forward, and the signal adjusting unit 8 and the screen driving circuit 9 are operated. Display "FF" on the TV screen and exit.

However, if the fast-forwarding operation is performed, the user turns on the fast-forward key again to search the screen immediately during the fast-forwarding operation. Set the flag (logic "1") and exit.

Accordingly, the video of the current videotape driving position is displayed on the TV screen during fast forwarding.

On the other hand, if the key is a fast rewind key or a rewind key, the key search result determines whether it is a key for performing other functions (PLAY, STILL, etc.). Perform.

However, if the rewind key is used, it is determined whether the current operation mode of the device is the rewind operation.

If rewinding is not in progress, perform rewinding operation and display "REW" on the TV screen. However, during the rewind operation, when the user turns on the rewind key again for the instant search of the screen during the rewind operation, the rewind operation is stopped, the review operation is performed, the "REV" is displayed on the TV screen, and then the search flag is set. Quit.

Accordingly, during the rewind, the image of the current videotape driving position is displayed on the TV screen. On the other hand, if the key that has been operated as a result of the key operation determination of the key operation unit 1 is turned off, the search flag is decoded to determine whether it is set or reset.

If the search flag is reset, the process is terminated. If the search flag is set, it is determined whether the queue operation is being performed during the fast forward operation or the review operation is being performed during the rewind operation. As a result of the determination, if the queue is in operation, the queue operation is stopped, the fast forward operation, which is the original operation, is displayed, "FF" is displayed on the TV screen, the search flag is reset, and the operation ends.

As a result of the discrimination, if the review operation is in progress, the review operation is stopped, the original operation rewind operation is performed, "REW" is displayed on the TV screen, the search flag is reset, and the operation ends.

As described above, according to the present invention, the instantaneous instantaneous screen (each time the FF / REW key is turned on) can be searched through the TV screen during rewinding or fast-forwarding, so that the desired screen can be precisely found at high speed and convenient for operation of the device. It can be done.

Claims (2)

A first step of retrieving the key operated by the key operating unit 1 and stopping the fast forwarding operation when the fast rewinding key is turned on again during the fast forwarding operation, setting the search flag after performing the queue operation, and the key operating unit 1 Retrieving the manipulated key in step 2), if the rewind key is turned on again during the rewind operation, the second step of stopping the rewind operation, performing the review operation and setting the search flag, and searching for the manipulated key in the key operation unit 1 A third step of determining whether the search flag is set when the key is turned off and determining whether a queue operation of the first process or a review operation of the second process is being performed if the result of the determination is set; If the result is a queue operation, the fourth process of resetting the search flag after stopping the queue operation, performing the fast forward operation, and reviewing the determination result of the third process, After stopping the view of operation and performs the reverse operation of time display method Search VCR comprising a fifth process of resetting the search flag. A key operating unit 1 equipped with a key switch including cues, reviews, fast forwards, rewinds, etc., a key determining circuit 2 for discriminating the operated key of the key operating unit 1, and the key determining circuit 2 Mode operation determining unit 3 for performing fast-forwarding cue and rewinding review control according to the key discrimination signal of < RTI ID = 0.0 >), < / RTI > a memory 4 storing data related to device control, and the mode discriminating unit 3 A motor driving signal output circuit 5 for outputting the fast-forwarding cue and rewinding review control data according to the mode discrimination result, and a motor driving circuit for driving the motor driver, rewinding, cue, review speed. And a signal controller 8 for performing signal processing such that a search image is displayed on the screen according to the mode discrimination result of the mode discriminator 3, and a character suitable for the signal processing result of the signal controller 8; And a screen driving circuit 9 for outputting a search image on the TV screen. Searching device of the VCR screen, it characterized in that the moment which comprises.