KR19990019445A - Automatic index marking method and apparatus - Google Patents

Abstract

The present invention relates to an automatic index notation method and apparatus for recording an index mark in an audio blank section before a song in order to search for a reserved song at high speed in a VCR having a karaoke function.

The apparatus of the present invention includes a key input unit for executing an Auto Index Marking System (AIMS), a control unit for controlling the operation of each component, a control unit for controlling the index mark recording according to the determination result of the determination unit, and a tape first from the end under the control unit And a servo unit for transferring up to a portion, a signal reading and recording unit for reading out an audio signal on a tape and recording an index mark in an audio blank section, and determining means for determining an audio blank section on a tape to be transferred. Therefore, the present invention records the index mark every time the audio blank section is detected while transferring the tape from the end to the beginning of the tape, and when the first part of the tape is reached, the AIMS execution is terminated. There is no need to rewind to the beginning (REW), so the user can use the karaoke function more conveniently and quickly.

Description

Automatic index marking method and device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an Auto Index Marking System (hereinafter referred to as AIMS) in a VCR (Video Cassette Recoder) having a Karaoke function, and in particular, a VCR tape containing a plurality of songs at the very end. Automatic index notation method and apparatus for recording an index mark whenever an audio blank section (SCAN) in front of a real song is scanned while rewinding from the beginning to the beginning .

Nowadays, karaoke is becoming more and more popular with the development of culture and individuality. In line with this lifestyle, the karaoke function was added to the home appliances to meet the needs of consumers in order to pursue a play culture such as karaoke at home. At this time, in order to use the karaoke function, as a VISS (Video Index Search System) signal for searching for a reserved song track at high speed, an index mark must be recorded in an audio blank section on a tape containing a plurality of songs.

Looking at the conventional AIMS execution process in detail as follows. When you first start running AIMS, you rewind the tape to the beginning. When the first part is reached, the tape is fast-forwarded to the end part and the audio blank section between songs is searched for no audio signal. Fig. 1A shows the format state of a tape on which a plurality of songs are recorded before executing AIMS. Where S is the start of the tape, B is the audio blank section, and E is the end of the tape. When the audio blank section is found, the index mark is recorded on the control track of the tape corresponding to the found audio blank section while playing back normally at the position. Fig. 1B shows the format state of the tape after executing AIMS. Where S denotes the beginning of the tape, M denotes the index mark, and E denotes the end of the tape. FIG. 2A shows a general control pulse recorded on the control track, and FIG. 2B shows an index pulse recorded on the control track corresponding to the audio blank section. In Figs. 2A and 2B, the meanings of 6: 4 and 3: 7 denote the ratios of the high section and the low section within one period of the square wave integrating the illustrated pulse. And 3 means the high section of the waveform, and 4 and 7 means the low section. Therefore, the above-mentioned index pulse and the general control pulse can be distinguished from each other even though they are recorded on the same control track. When the recording of the index mark is finished, the above operation is repeatedly performed while fast forwarding to the end again. Then, when it reaches the end of the tape, it rewinds the tape to the beginning with REWIND and finishes running AIMS. After the index mark is recorded on the tape containing a plurality of songs, when playing the reserved song, only the index mark as the VISS signal is searched for, rather than the audio blank section, so that the song title can be quickly searched. For this high-speed search, the function of automatically marking an index mark on a recording medium such as a VCR tape is called AIMS.

However, as described above, since the index mark is recorded while the tape is wound from the beginning to the end of the tape, the tape needs to be rewound to the beginning, thereby increasing the time required for the movement of the tape. As a result, there was a problem of causing a decrease in the execution speed of AIMS.

Accordingly, an object of the present invention is to provide an automatic index marking method which improves the execution speed by executing AIMS from the end of the tape and ending with the beginning to solve the above problems.

Another object of the present invention is to provide an apparatus for implementing the above-described automatic index marking method.

1A is a conceptual diagram showing the format of a tape on which songs are recorded;

1B is a conceptual diagram showing the format of a tape recorded after AIMS execution;

2A is a conceptual diagram illustrating a general control pulse signal recorded on a control track;

2B is a conceptual diagram showing an index mark of a control pulse recorded in an audio blank section before a music piece;

3 is a block diagram of an apparatus implementing the automatic index marking method according to the present invention,

4A is a state diagram for displaying a menu screen for setting AIMS;

Figure 4b is a state diagram showing the initial screen running the AIMS,

5 is a flowchart for explaining each operation of the apparatus of FIG.

* Explanation of symbols for main parts of the drawings

30: determination means 31: key input unit

32: control unit 33: screen output unit

34: Servo unit 35: Signal reading and recording unit

36: audio signal processor 37: determination unit

The automatic index marking method of the present invention for achieving the above objects is a method for recording an index mark by searching an audio blank section between songs on a tape in which a plurality of songs are recorded in a VCR with a karaoke function. Retrieving the audio blank section on the tape while rewinding the tape from the end to the beginning; And (2) recording the index mark at the tape position corresponding to each time the audio blank section is searched.

An automatic index marking apparatus of the present invention for achieving another object is a device for recording an index mark in an audio blank section of a tape containing a plurality of songs in a VCR with a karaoke function, the key input unit for executing AIMS; And controlling the operation of each component for executing AIMS in response to the above-described input signal of the key input unit, and controlling the index mark recording according to the determination result of the determination means. In addition, the apparatus of the present invention is a servo unit for transferring the tape from the end to the beginning under the control of the control unit described above, and a signal reading for reading out an audio signal from the tape under the control of the control unit and recording an index mark in the retrieved audio blank section. And a recording unit. In addition, the apparatus of the present invention includes determination means for determining the audio blank section on the tape to be transferred.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram showing an automatic index marking apparatus according to an embodiment of the present invention. The apparatus in FIG. 3 according to the present invention includes a control unit 32 for controlling the first half of each configuration. The output terminal of the control unit 32 is connected to a servo unit 34 which transfers the tape from the end to the beginning, and a signal reading and recording unit 35 which reads out an audio signal recorded on the tape and writes an index mark. The above-described determination means 30 includes an audio signal processor 36 and a determination unit 37. The audio signal processing unit 36 connected to the output terminal of the signal reading and recording unit 35 reproduces and processes the audio signal read from the tape under the control of the control unit 32, and outputs the reproduced audio signal to the determination unit 37. The determination unit 37 is configured to receive the reproduced audio signal, determine an audio blank section for recording the index mark, and output the determination result to the control unit 32. In addition, the input terminal of the control unit 32 is connected to a key input unit 31 for applying a key matrix signal for executing AIMS, and the output terminal of the control unit 32 is a screen for outputting the AIMS operation state on the screen. The output unit 33 is configured to be connected.

Referring to the operation of the device of Figure 3 according to the present invention having the above configuration in detail as follows. First put the VCR into AIMS setup mode. As shown, FIG. 4A shows a menu screen immediately before setting AIMS, and FIG. 4B shows an initial screen on which AIMS is being executed. Now, when the tape containing the music for recording the index mark is inserted into the VCR deck unit (not shown), the control unit 32 controls the servo unit 34 to start the rapid transfer (FF) of the tape. When the end of the tape is detected by the sensor unit (not shown), the control unit 32 applies a control signal to the servo unit 34 to stop the rapid transfer of the tape. Now at the end of the tape the control unit 32 applies a control signal to the servo unit 34 to rewind the tape. At the same time, the judging section 37 searches for the audio blank section on the rewinding tape.

In more detail, the signal reading and recording unit 35 reads the audio signal recorded on the conveyed audio tape and outputs the audio signal to the audio signal processing unit 36. The audio signal processor 36 receives the audio signal read out according to the control signal of the controller 32 and reproduces the audio signal. This signal is input to the determination unit 37. The determination unit 37 counts whether the input audio signal is input for a preset time or more. In the present embodiment, an example of detecting an audio signal for 15 seconds or more in a rewound (REW) state set to 4 times speed will be described. The above-described audio signal detection process is for judging whether this section is a demo section or a section in which actual songs are recorded so as to record an index mark only in the audio blank section before the audio signal section in which the actual songs are recorded. In fact, in karaoke and general video tapes, there is a section where a promotional demo screen is recorded before this screen appears. However, the section in which the above-described promotional demo screen is recorded is usually provided with a short section before the screen. In the section in which the actual song is recorded, the audio signal continues for more than 60 seconds per song. Therefore, if the audio signal is not detected for more than 15 seconds from the time when the audio signal is first detected in the state where the tape is rewound at 4 times, this section is a demonstration section or a noise section. Now, if there is a section in which the audio signal is continuously input from the audio signal processor 36 for 15 seconds or longer and no audio signal is input, the determination unit 37 determines that this section is the audio blank section before the actual song to which the index mark should be recorded. .

On the other hand, when the last track audio signal of the tape is detected for 15 seconds or more, the servo unit 34 rapidly transfers the tape under the control of the control unit 32, and then ends the tape again. Wind up At the same time, when the section in which the above-described audio signal is not input to the determining section 37 is detected from the audio signal processing section 36, the determining section 37 determines that this section is the audio blank section following the last song of the tape. At this time, the control unit 32 stops the rapid transfer of the tape. As a result, the control unit 32, which finds the first index mark recording section at the end of the tape, applies a normal play signal to the servo unit 34. FIG. At the same time, the signal reading and recording section 35 receives the index mark data from the control section 32 and records the index mark in the audio blank section following the last song on the tape. The reason for recording the index mark indicating the end of the last song is to compensate for the problem of wasting time when searching the index mark by using the VISS function if the section is long after the last song. After recording of the first index mark from the end of the tape, the servo unit 34 rewinds the tape to 4 times the speed again under the control of the control unit 32. At the same time, when the last track audio signal of the tape is detected for more than 15 seconds and the song ends, and the audio blank section immediately before the last track is found, the determination unit 37 carries a second index mark from the back of the tape, that is, the last track. It is determined that the index mark indicating that the song is an audio blank section to be recorded. The control unit 32 controls to record the second index mark in the same manner as when recording the first index mark from the back of the tape. The above-described index mark is an index mark for searching for the last song recorded on the tape. When the last song index mark is recorded, the servo unit 34 rewinds the tape under the control of the control unit 32. If the audio blank section is detected after the audio signal is detected for 15 seconds or more, under the control of the control unit 32, the servo unit 34 reproduces the tape normally, and the signal reading and recording unit 35 displays the third index mark at the end of the tape. In other words, the index mark indicating the second song at the end is recorded. The above-described process is repeated and the control unit 32 records the index mark every time the audio blank section is searched from the end to the beginning of the tape. After recording the index mark representing the first piece of music on the front of the tape, there is a demo section for advertisement, and the audio signal is detected in 15 seconds or less. Even though a blank section appears, the judging unit 37 performs the blank following the demo signal section. It is determined that the interval, and the signal reading and recording section 35 does not record the index mark. When the start sensor is detected by the sensor unit (not shown), the servo unit 34 ends the execution of the AIMS according to the control signal of the control unit 32.

5 is a flowchart illustrating the operation of the apparatus of FIG. 3 according to the present invention. First, the determination unit 37 determines whether or not the AIMS is already running (step 510). If it is determined that the AIMS is already running, the determination unit 37 searches for the audio blank section.

On the other hand, if it is determined in step 510 that the AIMS is not currently being executed, the determination unit 37 determines whether the AIMS setting is completed. If it is determined that the AIMS setting has not yet been made, the controller 32 immediately terminates the operation (step 520). However, if the AIMS setting is completed, the servo unit 34 fast-forwards (FF) the tape to the end according to the control signal applied from the control unit 32 (step 530). At the same time, the judging section 37 determines whether the tape has reached the far end. At this time, if a signal indicating that the end of the tape is detected by the end (END) sensor of the sensor unit (not shown), the determination unit 37 determines that the end of the tape. However, if a signal indicating that the end sensor is the end of the tape is not detected, the determination unit 37 determines that the current position is not the end of the tape. If it is determined that the tape has not reached the far end, the control unit 32 returns to the above-described step 530 (step 540). In addition, if it is determined by the determination unit 37 that the tape has reached the end, the servo unit 34 starts to rewind the tape to the initial direction in accordance with a control signal from the control unit 32 (step 550). . At the same time, the controller 32 controls the operation to proceed to step 560.

On the other hand, if it is determined in step 560 by the determination unit 37 that the current position of the tape is not the audio blank section, the servo unit 34 proceeds to step 580 described later and rewinds according to the control signal of the control unit 32. (REW) Continue operation. When it is determined by the determination unit 37 that the current position is the audio blank section, the servo unit 34 plays the tape normally according to the control signal of the control unit 32, and at the same time, the signal reading and recording unit 35 An index mark as a vis signal is recorded in the control track corresponding to the retrieved audio blank section (step 570). After the index mark recording operation is finished, the servo unit 34 starts rewinding the tape (REW) again (step 580). At the same time, the judging section 37 determines whether the current position of the rewinding tape is the first part. At this time, if a signal indicating the start of the tape is detected by the START sensor of the sensor unit (not shown), the determination unit 37 determines that the current position of the tape is the first portion. However, if no signal indicating the start of the tape to the start sensor is detected, it is determined that it is not the first part. At this time, if the determination unit 37 determines that the current position of the tape is not the first part, the control unit 32 returns to step 560 and controls to repeat the process (steps 560 to 590) up to the current step (step 560). 590). On the other hand, if the determination unit 37 determines that the current position of the tape is the first part, the servo unit 34 stops the operation according to the control signal of the control unit 32 to complete the AIMS execution (step 600).

As described above, the present invention, unlike the prior art, by rewinding the tape from the end to the beginning of the AIMS by executing the AIMS in the conventional process, the time of rewinding the tape to the beginning of the tape and the index-marked tape This saves time from rewinding to the very beginning. In addition, the present invention reduces the AIMS execution time of the present invention as the tape is wound to the end at the start of AIMS execution, and in particular, the effect of the present invention is maximized when the tape is wound to the extreme end. Therefore, the present invention provides the user with the effect of using the automatic index notation system more simply and quickly than conventional.

Claims (9)

In a method of recording an index mark in an audio blank section of a tape containing a plurality of songs, (1) retrieving the audio blank section on the tape while rewinding the tape from the end to the beginning; And (2) recording an index mark at a tape position corresponding to each time an audio blank section is searched. The method of claim 1, wherein the step (1) further comprises determining whether the current position of the tape is at the end. The method of claim 1 or 2, wherein the step (1) further comprises the step of winding the tape to the end if not the end of the tape. The method of claim 1, wherein step (2) further comprises a step of determining whether the current position of the tape is the first part. 5. The automatic index notation according to claim 1 or 4, wherein the step (2) further includes a step of normally playing the tape in the interval whenever the audio blank section is searched if it is not the beginning of the tape. Way. An apparatus for recording an index mark in an audio blank section of a tape containing a plurality of songs, A key input unit for executing an AIMS (Auto Index Marking System); A control unit controlling an operation of each component for executing AIMS in response to an input signal of the key input unit, and controlling an index mark recording according to a determination result of the determination unit; A servo unit for transferring the tape from the end to the beginning under the control of the controller; A signal reading and recording unit for reading out an audio signal on a tape under the control of the control unit and recording an index mark in the retrieved audio blank section; And An automatic index marking apparatus comprising determining means for determining an audio blank section on a conveyed tape. 7. The automatic index display apparatus according to claim 6, further comprising a screen output unit for outputting an AIMS setting and execution state on a screen under the control of the controller. 7. The automatic index marking apparatus according to claim 6, wherein the servo unit normally plays back the index mark under the control of the controller. The method of claim 6, wherein the determining means An audio signal processor for reproducing the audio signal read out from the tape; And And a determination unit which checks whether an audio signal reproduced by the audio signal processor is input and determines an audio blank section if an audio signal is not input after an audio signal is input for a predetermined time or more.