KR19990017558A - List Introduction Data Playback Control Method - Google Patents

Abstract

The present invention does not play only a predetermined time from the start of playing the corresponding list during partial play for the list introduction, but plays back the list only by the introduction time arbitrarily set by the user from the time when the play output signal is detected at a predetermined value or more. The present invention relates to a list introduction data reproduction control method for sequentially reproducing the contents of a list in the same manner for the next list, and the list introduction data reproduction control method according to the present invention is directed to a list introduction reproduction method for a compact disc. A first step of reproducing and outputting corresponding data of the list; Detecting a time point at which the output signal becomes equal to or greater than a predetermined reference value; And a third step of reproducing the corresponding data of the list only as much as a preset introduction time starting from the detected time point. The list selection can be performed without regard to the nature and genre of the list. Not only can it be convenient, but it is also possible to set a fixed time from the above-mentioned constant value and the user can change the list time according to the type or genre of the disk owned by the user. It is possible to set a little longer for the disc and relatively short for the popular song disc, which effectively eliminates problems such as time wasted due to inadequate introduction time on the collection disc and the inability to introduce songs. It is a very useful invention to achieve.

Description

List Introduction Data Playback Control Method

The present invention relates to a list introduction data reproduction control method for introducing a list to sequentially reproduce a portion of a compact disc list to play, and more particularly, a predetermined time from the start of the reproduction of the corresponding list during partial reproduction for the introduction of the list. Not only to play the list, but also to play the list only for the introduction time that is arbitrarily set by the user from the time when the output signal is detected above a certain value, and then the list contents are sequentially played for the next list in the same manner. A data reproduction control method.

In general, intro playback of a compact disc means that the user starts playing the beginning of each list for a short time in sequence for a number of lists (songs, movies, etc.) contained in the disc. By listening or watching, it can be said that the user can easily select a list to be played by the user.

The compact disc (CD) player for performing the conventional list introduction reproducing function as described above includes a key input unit 42 for requesting a list introduction reproducing request of the user, as shown in FIG. A display unit 41 for displaying a list number to be reproduced, a reproduction time, and the like; A pickup section 10 for detecting a recording signal from the disk surface; A motor (M) for rotating the disk; A drive unit 13 driving the pickup unit 10 and the motor M; An RF unit 12 for filtering the signal detected by the pickup unit 10; A servo unit 20 controlling the driving of the drive unit 13 from the output signal of the RF unit 12 and the rotational speed of the disk, and detecting the synchronization of the output signal of the R / F unit 12; A digital signal processor (30) for restoring the read signal passing through the servo unit (20) to the digital signal and restoring the original audio (or video) data using the detected synchronization; A D / A converter (31) for converting the restored digital data into an analog audio signal; An amplifier (32) for amplifying and outputting the converted analog signal; And a controller 40 controlling the components via a bus to perform a list introduction reproducing function.

FIG. 2 is a flow chart of a conventional list introduction playback method. Referring to FIG. 1, a process of performing a compact disc player of FIG. 1 is first performed according to a list introduction playback request signal through the key input unit 42 of the user (S10). The control unit 40 controls the servo unit 40 to move the pickup unit 10 to the position of the first track number at which data is recorded (S11), and the display unit 41 tracks the playback time. Display number 1 and playback time.

The pickup unit 10 detects a recording signal in a corresponding track, and the signal detected from the pickup unit 10 is shaped by a clean signal by removing noise and noise by the RF unit 12, and then Simultaneously detected by the servo unit 20 and input to the digital signal processing unit 30 is restored to the original audio (or video) data. The digital data restored by the signal processing is converted back into an analog signal and reproduced by appropriately amplifying and outputting the signal (S40). During such a reproducing operation, the controller 40 sets an introduction time T at which the current reproducing time is set. Check whether the elapsed time (S50), and if the set introduction time (T) has not elapsed, the playback continues, and if the elapsed time, check whether the current playback track number was the last (S60), if not the last pick up to the list of the next track number The position of the unit 50 is moved (S61) to reproduce. When this process is repeated to confirm the completion of the list introduction playback of the last track number (S60), the list introduction playback is terminated (S70). During this process, when the user wants to listen or watch the contents of the desired list, the normal playback is performed. If is input, even if the playing time passes the preset introduction time T, the corresponding list is played to the end without stopping the play.

However, the introduction time for list introduction playback for each list is fixed at the time of designing the player to 10 or 9 seconds from the start of playback of the corresponding list, depending on the characteristics and genre of the list. In particular, music such as classical music has a long silent period or a weak period at the beginning, and thus, the user may not be able to grasp the meaning of the song for the selection within the preset introduction time. In order to prevent this, if the introduction time is set longer to prevent this, the length of the list becomes unnecessarily long, causing the user to feel frustrated and of course wasting time.

Accordingly, the present invention has been made to solve the above problems, to provide a list introduction data playback control method to ensure that the effective introduction information is maintained for a certain time according to the characteristics of the list when playing the list introduction of the disc. It is an object of the present invention, and another object of the present invention is to provide a list introduction data reproduction control method which allows a user to set and operate an introduction time suitable for the genre of a disc possessed.

1 is a configuration diagram of a compact disc (CD) player to which a conventional intro playback method is applied, FIG. 2 is a flowchart illustrating a conventional catalog introduction playback method, and FIG. 3 is a list according to the present invention. Fig. 4 is a block diagram of a compact disc (CD) player to which the introduction data reproduction control method is applied, and Fig. 4 shows a graph of signal values reproduced and output from the compact disc, and Fig. 5 is a list introduction data reproduction control according to the present invention. A flowchart of the method is shown.

Explanation of symbols for main parts of the drawings

M: Motor 10: Pickup

12: RF unit 13: drive unit

20: servo unit 30: digital signal processing unit

31: D / A converter 32: amplifier

40, 400: control unit 41: display unit

42: key input unit 500: comparator

510: latch

According to an aspect of the present invention, there is provided a list introduction data reproducing control method comprising: a first step of reproducing and outputting corresponding data of an arbitrary list in a list introduction reproducing method of a compact disc; Detecting a time point at which the output signal becomes equal to or greater than a predetermined reference value; And a third step of reproducing the corresponding data of the list only by the preset introduction time starting from the detected time point. The method of controlling the list introduction data reproduction according to the present invention includes the introduction. Another feature is that the time is variable.

In the method for reproducing the list introduction data according to the present invention as described above, first, when the user requests the list introduction reproduction, the list value is reproduced by comparing each signal value outputted by the list with a predetermined reference value set to be recognizable. The time point when the reference value is exceeded is detected. When the time point is detected, the preset introduction time elapses and the reproduction of the list is maintained during this time. When the introduction time has elapsed, the list moves to the next list, and the predetermined value is detected after the start of reproduction as described above. By reproducing from the time point to the set introduction time, the user can listen to or watch the list for a predetermined time in which the contents of the list can be recognized, so that the list selection can be made completely.

Hereinafter, a preferred embodiment of the list introduction data reproduction control method according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a configuration diagram of a compact disc player to which the list introduction data reproduction control method according to the present invention is applied, and in addition to the components of FIG. 1, a comparator for comparing the analog output value from the D / A converter 31 with a predetermined reference value. 500; And a latch 510 for detecting a time point at which the output value exceeds a reference value as a result of the comparison. The control unit 400 of FIG. 3 is an inversion time point of the output value Q of the latch 510. Will control playback of the list as much as the set introduction time.

FIG. 5 is a flowchart of a method of controlling list introduction data reproduction according to the present invention. Hereinafter, the reproduction method of FIG. 5 will be described in detail with reference to a configuration diagram of the compact disc player of FIG.

When the user requests a list introduction playback through the key input unit 42 in a state in which a compact disc including a plurality of lists is mounted in the player (S110), the input list introduction request signal is sent to the controller 400. The controller 400 moves the pickup unit 10 to the position of the first track number for reproducing the disc through the servo unit 20 (S121). Therefore, the corresponding track number is reproduced (S122). During such a reproducing operation, the variable request of the user's list introduction execution time (introduction time T) is checked (S130). After checking whether the time T is an increase request or a decrease request (S131), the preset introduction time T is increased or decreased according to the request and updated and stored (S132,133).

On the other hand, when the reproduction of the list starts, the recording signal on the surface of the disc detected by the pickup unit 10 is the RF unit 12, the servo unit 20, and the digital signal processing unit 30 as shown in FIG. The audio signal is converted into an analog signal in the D / A converter 31, amplified by the amplifier 32, and then output to the speaker. The analog converted signal is output from the comparator 500. When the audio signal value inputted to the comparator 500 is compared with the audio reference signal value set to a predetermined level, the rising edge is generated and clocked when the audio signal value input to the comparator 500 exceeds the reference signal value. The output value Q of is to be switched to HIGH.

When the output of the latch 510 is switched, this output value Q is confirmed during the regeneration operation of the control unit 400 (S140), and from that time on, the regeneration time t of the control unit 400 starts to proceed. do. Since the reproduction time t is always smaller than the variable set introduction time T before the reproduction time t proceeds, the reproduction is continuously performed, and when the reproduction time t proceeds to exceed the variable set introduction time T ( In operation S150, the controller 400 stops playing the corresponding list, restores the output value Q of the latch 510 again (CLR), and initializes the reproduction time t value. Then, the controller 400 checks whether the list just stopped playing is the last list (S160), and if not, the servo unit 20 causes the pickup unit () to the track corresponding to the second list position. 10) to move (S161), and when the movement is complete, the above-described process is repeated for the corresponding list, and this operation is repeated after the step is repeatedly performed to the last list (S160) (S170). .

The list introduction data reproduction control method according to the present invention made as described above, as shown in Figure 4, since the list of the introduced signal for a predetermined time from the time when the signal value output during reproduction exceeds a certain reference value, the nature and genre of the list It is possible to introduce the list reliably without any concern, so that not only the selection of the list is convenient, but also the user can variably set the fixed time from the predetermined reference value or more, so that the user owns the type of disc Depending on the genre, it is possible to set the most appropriate list introduction time, for example, a little longer for accompaniment discs and a relatively short time for popular pop discs. The list grasp is practical, eliminating the problem of not being It is a very useful invention to make it effective.

Claims (3)

A method for introducing a list of compact discs, the method comprising: a first step of reproducing and outputting corresponding data of an arbitrary list; Detecting a time point at which the output signal becomes equal to or greater than a predetermined reference value; And a third step of reproducing the corresponding data of the list only for a preset introduction time starting from the detected time point. The method of claim 1, wherein the introduction time is set to be variable. The method of claim 1, wherein the output signal is an audio signal to be reproduced.