JPH0660623A - Melody selecting circuit for disc player - Google Patents

Abstract

PURPOSE:To provide a melody selecting circuit for disc player in which the number of melody is indicated on an indicator when it is stored in a memory during replay operation through closure of a skip switch whereas the number of melody not stored is indicated through a selection switch. CONSTITUTION:When a skip switch 11 is operated during replay operation of a melody not required to be replayed, the melody is stored as 'not required' in a memory 12 and the number of melody is indicated on an indicator 10. When the number of melody 'not required' is once stored in the memory 12, it is not erased even upon opening of power switch because the memory is fed with power from a backup power supply. Upon subsequent turn ON of power switch, data signal is read out and stored in a memory 9. Upon turn ON of a replay switch, melodies are replayed starting from melody No.1. If melody No.2 is not required, melody No.3 is replayed upon finish of melody No.1 and replay operation continues upto melody No.N before stoppage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus capable of performing a music selection operation based on a signal recorded on a disc.

[0002]

2. Description of the Related Art Disc reproducing apparatuses which perform a reproducing operation by reading a signal from a disc on which information data such as music is recorded by a digital signal by using an optical pickup are in widespread use. The most common type of device is a CD player.

In such a CD type disc, as is well known, data indicating the contents of information data recorded in the disc is recorded at a position called a lead-in area. By reading such data, the disc is read. The number of recorded songs and the like can be detected and displayed.

In addition to a main data signal such as music information, such a disc has recorded therein a sub data signal called a sub coding signal which completes one block in a cycle of 1/75 second accompanying reproduction. . Such a sub-coding signal is composed of eight channels of P and Q to W channels, in which the P channel contains position index information indicating the position of the beginning of the song, and the Q channel has the start point of the signal track. It includes position index information indicating the absolute elapsed time from, the elapsed time for each song, the song number, and the like.

The CD player can perform a search operation by using the above-mentioned position index information, and can perform an operation of reproducing the designated music, that is, a so-called music selection operation.

[0006]

Generally, a plurality of songs are recorded on a disc, and normally all the songs recorded on the disc are reproduced. However, some of the songs are reproduced at the next reproduction. Some songs I don't want to hear. In such a case, conventionally, the music to be reproduced and listened to has been selected and set in advance so that the reproduction operation of the music that the user does not want to hear is not performed.

There is no problem if the number of songs that one wants to hear is less than the number of songs that one does not want to hear, but generally, the number of songs that one does not want to hear is smaller, and in this case, the number of songs that one wants to hear. Therefore, there is a problem that it is necessary to perform many selection setting operations. The present invention is intended to provide a music selection circuit that improves such a point.

[0008]

SUMMARY OF THE INVENTION A music selection circuit of the present invention sets a data memory circuit for storing a music number based on data recorded in a lead-in area provided on a disc and a reproduction unnecessary music piece. The skip switch that is pressed and closed when the recording is performed, the memory circuit that stores the number of the music being reproduced as the reproduction unnecessary music when the skip switch is pressed and closed in the reproduction operation state, and the disc It is composed of a display for displaying the number of the music being reproduced based on the obtained signal, and a selection switch for selecting a reproduction unnecessary music and a reproduction music.

[0009]

According to the present invention, when the number of the tune being reproduced is stored in the memory circuit by the pressing and closing operation of the skip switch, the tune number stored in the memory circuit is displayed on the display and the selection switch is operated. By the selection operation, the music number not stored in the memory circuit is displayed on the display.

[0010]

1 is a block circuit diagram showing an embodiment of the present invention. In the figure, 1 is a disc (not shown)
A pickup having a built-in photodetector for projecting a light beam onto the optical disc and receiving the light beam reflected by the signal surface of the disc is provided with R, which is obtained from the photodetector of the pickup 1.
An RF amplifier circuit 3 that amplifies the F signal (high frequency signal) and shapes the waveform, and a focusing control 3 that focuses the light beam of the pickup 1 on the signal surface of the disk based on the signal obtained through the RF amplifier circuit 2. And a pickup control circuit for performing tracking control for causing the light beam to follow the signal track on the signal surface and controlling the feed operation of the entire pickup 1.

Reference numeral 4 denotes a digital signal processing circuit that performs digital signal processing of the digital signal output from the RF amplifier circuit 2 and demodulates various signals. Reference numeral 5 denotes a digital signal output from the digital signal processing circuit 4. A DA converter that inputs and converts the signal into an analog signal, and 6 is an amplifier circuit that amplifies the signal while the analog signals of the left and right channels output from the DA converter 5 are input. An amplifier circuit is incorporated.

Reference numeral 7 is an operation switching operation switch provided for performing switching operations such as reproduction and stop, and 8 is a switching operation of the operation switching operation switch 7 and a signal output from the digital signal processing circuit 4. It is a system control circuit for controlling the operation of the disc reproducing apparatus based on the above.

Reference numeral 9 denotes a data memory circuit for storing a music number, which is the data of the signal recorded on the disc when the operation of reading the data recorded in the lead-in area provided on the disc is performed. Reference numeral 10 denotes an indicator whose operation is controlled by the system control circuit 8, which displays the track number recorded on the disc based on the signal obtained from the data memory circuit 9 and displays the signal obtained from the disc. Based on this, it has an effect of displaying the number of the music being reproduced, the playing time, and the like.

Reference numeral 11 denotes a skip switch that is pressed and closed when setting a reproduction unnecessary music piece, and 12 is a number of a music piece being reproduced when the skip switch 11 is pressed and closed in a reproducing operation state. A memory circuit stored as unnecessary music, 13 is an erasing switch for erasing the number of unnecessary reproduction music stored in the memory circuit 12, and 14 is a selection switch for performing an operation of selecting unnecessary reproduction music and reproduced music. .

In such a structure, the number of the unnecessary reproduction music stored in the memory circuit 12 is displayed on the display 10. Further, when the selection switch 14 is pressed and closed while the number of the unnecessary reproduction song stored in the memory circuit 12 is displayed on the display unit 10, the display circuit 10 stores it in the memory circuit 12. The number that is not played, that is, the number of the song that is played back is displayed.

All the numbers of unnecessary reproduction songs stored in the memory circuit 12 are erased by pressing and closing the erasing switch 13, but an operation of ejecting the disc from the disc reproducing device is performed. It is configured to be erased even when it is performed.

The music selection circuit of the present invention is constructed as described above, and its operation will be described below. When the power switch (not shown) is closed after the disc is mounted on the disc reproducing device, the pickup 1 is moved to a position where the signal recorded in the lead-in area of the disc is read and the disc is rotationally driven. When such an operation is performed, the signal recorded on the disk is read by the pickup 1 and R as an RF signal is read.
It is supplied to the F amplifier circuit 2. The RF signal input to the RF amplifier circuit 2 is amplified and waveform-shaped and applied to the digital signal processing circuit 4 as a digital signal.

The digital signal processing circuit 4 demodulates the digital signal output from the RF amplifier circuit 2, extracts various data signals contained in the digital signal, and outputs them to the system control circuit 8. As a result of such an operation, the data such as the song number recorded on the disc based on the signal recorded in the lead-in area is stored in the data memory circuit 9 and displayed on the display 10.

In such a state, when the reproducing operation switch incorporated in the operation changing operation switch 7 is operated, the disc reproducing apparatus is brought into a state of performing a reproducing operation, and the pickup 1 is stored in the data memory circuit 9. Based on the existing data, it is moved to the position where the signal of the first song is recorded.

When such an operation is performed, the signal of the first music piece is read by the pickup 1, amplified by the RF amplifier circuit 2, and input to the digital signal processing circuit 4. The digital signal processing circuit 4 demodulates the digital signal output from the RF amplification circuit 2 and extracts various data signals contained in the digital signal. The audio data is extracted by the signal processing operation of the digital signal processing circuit 4, and the audio data is output after the error correction processing operation is performed based on the error correction data included in the digital signal.

The audio data signal output from the digital signal processing circuit 4 is input to the DA converter 5, converted into an analog signal, and then applied to the amplifier circuit 6 to be amplified. Therefore, signals such as music are connected to the amplifier circuit 6 as a speaker (not shown).
Then, the sound is emitted and the user can hear the reproduced sound.

The reproduction operation of such a disc is started from the first piece of music to N pieces which is the last piece of music. When such a reproduction operation is performed, the display unit 10 displays the data signal obtained from the disc. Based on the above, the number of the music piece being reproduced, the reproduction time and the like are displayed by the operation of the system control circuit 8.

The reproducing operation of the disk reproducing apparatus according to the present invention is performed as described above. Next, the setting operation of the unnecessary reproduction music will be described. The setting operation of the reproduction unnecessary music is performed by pressing and closing the skip switch 11 when the music which is not desired to be reproduced in the next reproduction operation is being reproduced.

If the skip switch 11 is closed by pressing the song which is not desired to be reproduced, for example, the second song is being reproduced, the second song is stored in the memory circuit 12 as a song not to be reproduced and the song is not played. The number is displayed on the display 10. In this way, the memory circuit 12 for the second song
The storage operation is performed, but the reproduction operation of the second music is continuously performed. When the reproduction operation of the second music is completed, the reproduction operation of the next music recorded on the disc, that is, the third music is started.

In this way, the reproduction operation of the third music piece is started, and subsequently, the reproduction operation of the fourth music piece and the fifth music piece is performed. Then, for example, when it is desired to set the fifth music as a reproduction unnecessary music, the skip switch 11 may be pressed and closed during the reproduction operation of the fifth music. When the skip switch 11 is closed by pressing, the fifth piece of music is stored in the memory circuit 12 as a reproduction unnecessary piece and the display 10 as described above.
Is displayed in.

When the reproducing operation up to the N-th piece of music recorded on the disk is completed while performing the above-mentioned operation of setting the unnecessary music for reproduction, the disk reproducing apparatus returns to the stopped state. Then, in such a state, when the power switch (not shown) is opened, the power supply to the circuits except the memory circuit 12 is cut off. That is, since the backup power is supplied to the memory circuit 12 even if the power switch is opened, the number of the unnecessary music piece stored in the memory circuit 12 is not erased by the setting operation described above. .

When the power switch is closed while the memory circuit 12 stores the number of the song not requiring reproduction, the information data signal recorded in the lead-in area of the disc is read out as described above. And stored in the data memory circuit 9. Then, in such a state, when the reproducing operation switch is operated, the reproducing operation is started from the first music piece recorded on the disc as described above.

When the reproduction operation of the first music piece is completed, the reproduction operation of the second music piece is normally performed. In this case, however, since the second music piece is stored in the memory circuit 12 as a reproduction unnecessary music piece, The playback operation of the second song is not started. Therefore, in such a case, when the reproduction operation of the first music piece is completed, the reproduction operation of the third music piece, which is the next music piece to the second music piece, is started.

When the reproduction operation of the third music piece is completed, the reproduction operation of the fourth music piece is started. When the reproduction operation of the fourth music is completed, the fifth music becomes the fifth music, but since the fifth music is stored in the memory circuit 12 as a reproduction unnecessary music, it is not reproduced and is the next music. The playback operation of the th song is started. After that, the reproducing operation of the music except the music number stored in the memory circuit 12 is performed up to the Nth music, and the disc reproducing apparatus is stopped.

The operation in the case where the number of the unnecessary song for reproduction is stored in the memory circuit 12 is performed as described above.
When the erasing switch 13 is pressed and closed in such a state, all the numbers of unnecessary reproduction songs stored in the memory circuit 12 are erased. The erasing switch 1
When 3 is pressed and closed, the erasing operation of the numbers of the reproduction unnecessary songs stored in the memory circuit 12 is performed, but the erasing operation of all the numbers is also performed when the disc is ejected.

The respective operations in this embodiment are performed as described above. Next, the operation when the selection switch 14 is pressed and closed will be described. When the memory circuit 12 stores the number of unnecessary reproduction music and the selection switch 14 is not operated, the display 10 displays the number of unnecessary reproduction music as described above. It is in. When the selection switch 14 is pressed and closed in such a state, the number of the music piece to be reproduced is displayed instead of the number of the reproduction unnecessary music piece displayed on the display 10.
Further, when the selection switch 14 is pressed and closed while the number of the music piece to be reproduced is displayed on the display unit 10, the reproduction of the music number displayed on the display unit 10 from the number of the reproduced music is unnecessary. Switch to song number.

As described above, each time the selection switch 14 is pressed and closed, the music number displayed on the display 10 is switched from the reproduction unnecessary music to the reproduction music and from the reproduction music to the reproduction unnecessary music. The confirmation operation of can be performed.

Further, in the above-mentioned embodiment, the selection switch 14 is pressed and closed so that the unnecessary music and the reproduced music are alternately displayed on the display device 10. However, the selection switch 14 is pressed and closed. It is also possible to perform the switching operation of the music number displayed on the display unit 10 when it is pressed and the switching operation of the reproduced music.

For example, in the above-described embodiment, the second and fifth music pieces are regarded as unnecessary reproduction music pieces and are stored in the memory circuit 12.
The numbers of the second and fifth songs are stored in the display 10 and displayed on the display 10. And. In such a state, the songs of the song numbers other than the numbers stored in the memory circuit 12, for example, the 1st, 3rd, 4th and 6th songs are in a state of being reproduced.

In such a state, when the selection switch 14 is pressed and closed, the music numbers displayed on the display 10 are switched from 2 and 5 to 1, 3, 4 and 6, and the reproduced music is 1,3. , 4 and 6 to 2 and 5. That is, when the music set as the unnecessary music is reproduced, the music numbers 1, 3, 4 and 6 displayed on the display 10 are displayed as the unnecessary music in such a state. It will be.

According to such a configuration, the skip switch 1
It is very convenient because the number of the song set by 1 and the number of the song not set can be selectively played back and the number of the unplayed song is displayed on the display 10.

In the case of such a configuration, the tune of the number stored in the memory circuit 12 by the pressing and closing operation of the selection switch 14, that is, the tune not to be reproduced is set by the pressing and closing operation of the skip switch 11. It is possible to perform the playback operation of the selected song. Then, when the reproducing operation of the number stored in the memory circuit 12 is performed by operating the selection switch 14, the skip switch 11 is pressed and closed to erase the number from the memory circuit 12. Can be configured to be capable.

With such a configuration, the memory circuit 12
Since the erasing operation of a predetermined music number can be selected and performed from the numbers of the reproduction-unnecessary music stored in, the operability is excellent.

[0039]

According to the music selection circuit of the present invention, when the number of the music being reproduced is stored in the memory circuit by pressing and closing the skip switch, the music number stored in the memory circuit is displayed on the display. In addition, since the music numbers not stored in the memory circuit are displayed on the display by the selection operation of the selection switch, it is possible to easily confirm the numbers of the music to be reproduced and the music not to be reproduced.

Further, since it is possible to perform the switching operation of the music number displayed on the display unit and the switching operation of the reproduced music by the switching operation of the selection switch,
By operating the skip switch, it is possible to perform the reproduction operation of the music having the number set as the reproduction unnecessary music. Therefore, the user can check the content of the music stored in the memory circuit as the music not requiring reproduction, which is very convenient.

Then, when the skip switch is pressed and closed while the music of the number stored in the memory circuit is being reproduced by switching the selection switch, the number of the music being reproduced is erased from the memory circuit. Since this is done, the erasing operation can be performed for each desired song number without performing the erasing operation for all numbers, and the present invention is extremely excellent in operability.

[Brief description of drawings]

FIG. 1 is a block circuit diagram showing an embodiment of a music selection circuit of the present invention.

[Explanation of symbols]

 1 pickup 3 pickup control circuit 4 digital signal processing circuit 7 operation switching operation switch 8 system control circuit 9 data memory circuit 10 indicator 11 skip switch 12 memory circuit 14 selection switch

Claims (3)

[Claims] 1. A disc reproducing apparatus capable of performing a music selection operation based on a signal recorded on a disc, in which a song number is stored based on data recorded in a lead-in area provided on the disc. Data memory circuit, a skip switch that is pressed and closed when setting a song that does not require playback, and the number of the song being played does not need to be played when the skip switch is pressed and closed when in the playback operation state It consists of a memory circuit that stores as songs, an indicator that displays the number of the song that is being played based on the signal obtained from the disc, and a selection switch that selects unnecessary songs and songs that are not played. When a memory operation for storing unnecessary songs in the memory circuit is performed by operating a switch, the song number stored in the memory circuit is displayed on the display. 2. When the selection switch is operated, the song selection circuit of the disc reproducing apparatus is characterized in that the display device displays a song number which is not stored in the memory circuit. 2. A disc reproducing apparatus capable of performing a music selection operation based on a signal recorded on a disc, in which a song number is stored based on data recorded in a lead-in area provided on the disc. Data memory circuit, a skip switch that is pressed and closed when setting a song that does not require playback, and the number of the song being played does not need to be played when the skip switch is pressed and closed when in the playback operation state It comprises a memory circuit stored as a music piece and a selection switch for selecting a reproduction unnecessary music piece and a reproduction music piece. When the number of the reproduction unnecessary music piece is stored in the memory circuit, the selection operation of the selection switch A music selection circuit for a disk reproducing device, wherein a music to be reproduced can be selected as either a reproduction unnecessary music or a reproduction music. 3. A disc reproducing apparatus capable of performing a music selecting operation based on a signal recorded on a disc, and a skip switch which is pressed and closed when a reproduction unnecessary song is set, and is in a reproducing operation state. At this time, when the skip switch is closed by pressing, a memory circuit for storing the number of the music being reproduced as the reproduction unnecessary music, and a selection switch for selecting the reproduction unnecessary music and the reproduction music, In the state in which the number of the song that does not need to be reproduced is stored, and the reproducing operation of the song having the number stored in the memory circuit is being performed by the selection operation of the selection switch, the skip switch is closed. Then, the music selection circuit erases the music number from the memory circuit.