JPH02139783A - Compact disk player - Google Patents

Abstract

PURPOSE:To reproduce a musical program in the descending or ascending order of reproducing frequency by depressing a frequency play key by providing the title player with a reproducing means for reproducing programs in a compact disk in the reproducing frequency order stored in the 2nd storage area. CONSTITUTION:A CPU 13 reads TOC information from the compact disk 1 and writes the TOC information in a storage area E1 of a block (B1) in a memory 13a and storage areas corresponding to the number of programs are formed in a block (B2) corresponding to the storage area E1. In each reproducing of each program, the data in the storage area of the block (B2) corresponding to the program numbers of respective programs are increased. When the frequency play key 17 is depressed, the block (B2) is scanned, the largest data is detected and program of its corresponding program number is reproduced. Thus, the programs of the program numbers corresponding to the data are sequentially reproduced in the descending order of the stored data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application IFJ] This invention relates to a compact disc player used for music reproduction, etc.

"Prior Art" In this type of compact disc player, the operation section is provided with a play key, a random play key, a plurality of numerical keys, and the like. When the compact disc is inserted into the player and the play key is operated, the songs on the compact disc are played sequentially from the first track to the last track, and when the random play key is operated, the songs on the compact disc are A song is randomly selected and played. Furthermore, when a numeric key with any number is operated, playback starts from the song corresponding to that number, and the playback continues sequentially until the last song.

``Problems to be Solved by the Invention'' The present invention provides a compact disc player having a playback key that is completely different from the conventional playback keys described above, that is, a frequency play key that allows playback to be performed based on the playback frequency. is intended to provide.

"Means for Solving the Problems" The present invention provides a compact disc player that plays a compact disc on which content information regarding recorded songs is recorded in advance, in which a plurality of disc identification information in the content information is stored. a first storage area; a second storage area that is provided corresponding to the first storage area and stores the playback frequency of the song; and a second storage area that stores the playback frequency of the song when the song on the compact disc is played; a writing means for writing into the second storage area; and a reproducing means for reproducing the songs stored in the second storage area in the order of highest or lowest playback frequency when a frequency play key is operated. It is characterized by having the following.

"Operation" According to the present invention, each time a song on a compact disc is played back, the playback frequency is written in the second storage area. When the newly provided frequency play key is operated, the songs on the compact disc are played back in the order of highest or lowest playback frequency stored in the second tα area.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a compact disc player according to an embodiment of the present invention. In this figure, l is a compact disc (CD), 2 is a spindle motor that rotates the compact disc l, and 3 is a spindle motor that rotates the compact disc l.
is a compact disc! 4 is a feed motor that moves the optical pickup 3, which reads digital information recorded by pits on the signal recording surface of the optical pickup. The optical pickup 3 includes a semiconductor laser,
The objective lens, the optical sensor, the focus adjustment mechanism that adjusts the focus of the objective lens, and the entire compact disk l.
It is configured by tracking adjustment control, etc., which moves a small distance in the radial direction. The read signal output from the optical pickup 3 is amplified by the RF amplifier 6, then subjected to processing such as demodulation, code error correction and correction by the signal processing circuit 7, and converted into an analog audio signal by the DA converter 8. converted. Further, this audio signal is subjected to processing such as amplification in the audio circuit 9, and then outputted to an external speaker via the output terminal IO.

Further, 11 is a servo circuit, which controls the spindle motor 2 at a constant linear velocity (C
LV servo), focus adjustment control (focus servo), and tracking adjustment control (tracking servo) of the optical pickup 3. Reference numeral 15 denotes a display using an LED, liquid crystal, etc., on which the song number, playing time, etc. are displayed. Reference numeral 17 denotes an operation section, which includes a play key for indicating the start of the playback operation, a stop key for indicating the stop, a numerical key for indicating the song number, a random play key, a frequency play key, and the like.

The control unit 13 includes a CPU (central processing unit) and
It consists of a ROM storing programs used in the U, a memory 13a for data recording, and a 10 (input/output) port for exchanging data with the outside. As shown in FIG. 2, the memory 13a stores each combination! - A block [B11 and each combo 1 in which the TOC information of the disc is stored, and a block [B11 in which the number of playbacks of songs included in the disc are stored] are provided. Note that data is always held in this memory 13a by a backup power source. Then, when the power is turned on, the CPU receives TOC (Table Or
Contents) information, and subcodes are read during song playback. Then, a control signal is outputted to the servo circuit 11 based on each piece of information read, and the song number, playing time, etc. are displayed on the display 15. Furthermore, a control signal is output to the servo circuit 11 based on each key information input from the operation unit 17. Note that TOC information is equivalent to the table of contents of a compact disc, and its contents include the song numbers of the first and last songs on the disc (usually the song number of the first song is "l"). , a time code indicating the start time of the six songs included in the disc, and a time code indicating the end time of the last song are recorded. Further, the subcode is a code used to perform a function of finding the beginning of a song, a program function of playing back songs according to a preset order, and the like. In this subcode, a time code indicating the playing time of one track number of the song, a time code indicating the cumulative playing time of six songs, etc. are recorded.

Next, the operation of this embodiment with the above configuration will be explained. Note that in the initial state, the blocks [B l ],
It is assumed that [8, 2] are both cleared. When the power switch is turned on and the compact disc 1 is set in the loading section by the user, the CPU reads the TOC information of the compact disc 1 and stores the read TOC information in the block [BI] of the memory 13a.
3 (this area is now called El).

Furthermore, based on this TOC information, the CPU provides storage areas for the number of songs in block [B11] corresponding to the storage area E1. In this case, this storage area corresponds to the song numbers in order from the top.

Next, when the play key is operated, the -th song is played, and when the playback of this song is finished, the CPU increments the data in the storage area of block [B11] corresponding to the song number l of this song. . As a result, the data in the storage area of block [B11 corresponding to song number I becomes rlJ.

Next, the second song is played, and when the playback of this song is finished, the CPU selects the block [B
The data in storage area No. 11 is incremented.

Thereafter, each time the songs are played back in sequence, the data in the storage area of block [B11] corresponding to the six song numbers is incremented.

Next, when the user operates one of the numerical keys (this key number is now 7), the seventh song will be played, and when the playback of this song is finished, the CPU will change the song number. The data in the storage area of block [B11 corresponding to block 7 is incremented. As a result, the data in the storage area of block [B11 corresponding to song number 7 becomes "2".

Thereafter, each time a numeric key is operated, the song corresponding to the number of that numeric key is played back, and when the playback of that song ends, the data in block [B11] corresponding to that song number is incremented.

Next, when the currently set compact disc l is replaced with another compact disc, the CPU first reads the TOC information of the replaced and newly set compact disc, and then blocks [B1]. The TOC information is scanned and compared to see if it is the same as the already registered TOC information. If they are the same, no particular processing is performed. Also, if they are not the same, block [B! ] The TOC information of the newly set compact disc is written in the storage area (this area is now referred to as B2). Further, as described above, the CPU provides storage areas for the number of songs in block [B11] corresponding to the storage area E2 based on this TOC information.

On the other hand, when the frequency play key is operated, the block [B11 is scanned and the largest data is detect,
The song having the song number corresponding to this detected data is played back.

When the reproduction of this song is finished, next, the block [B11 corresponding to the area El is similarly scanned, and the next largest data is detected from the above-mentioned largest data. Then, the song having the song number corresponding to this data is played back. Thereafter, songs with song numbers corresponding to data stored in block "B2" corresponding to area Et are sequentially played in descending order of data.

Next, when the frequency play key is operated again, the songs are sequentially played back in the order of the data stored in block [82] in the order described above.

In this manner, in the embodiment described above, each time a song is played back, the data in block [B11] corresponding to the song number of this song is incremented. Then-〇1, when the frequency play key is operated, the songs are played in descending order of the data stored in block [B11].

In the above embodiment, when the frequency play key is operated, songs are played in descending order of data stored in block [B11. The songs may be played back in descending order of the data included.

"Effects of the Invention" As explained above, according to the present invention, there are a plurality of first storage areas in which disc specific information in content information is stored, and a plurality of first storage areas are provided corresponding to the first storage areas, and a plurality of first storage areas are provided corresponding to the first storage areas. a second storage area in which the playback frequency is stored; a writing means for writing the playback frequency of the song in the second storage area when the song on the compact disc is played; and when the frequency play key is operated; Since a playback means is provided for playing the songs on the compact disc in the order of the highest or lowest playback frequency stored in the second storage area, the songs are played in the order of the highest or lowest playback frequency by operating the frequency play key. There is an effect that can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a compact disc player according to an embodiment of the invention, and FIG. 2 is a diagram showing the storage state in a memory applied to the embodiment of the invention. l...Compact disc, 13...
Writing means. Playback means (control unit), +3a...Storage area (
memory), 17... operation section (frequency play key, etc.).

Claims (1)

[Scope of Claim] A compact disc player that plays a compact disc on which content information regarding recorded songs is prerecorded, comprising: a plurality of first storage areas in which disc specific information in the content information is stored; a second storage area that is provided corresponding to the first storage area and stores the playback frequency of the song;
a writing means for writing the playback frequency of the song in the second storage area when the song on the compact disc is played; and a writing means for writing the playback frequency of the song in the second storage area when the frequency play key is operated; A compact disc player characterized by comprising: a reproducing means for reproducing songs on the compact disc in order of frequency or frequency.