JP3122225B2 - Digital audio equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital audio device, and more particularly, to a digital audio device for searching for a desired song from a plurality of songs recorded on a digital audio medium by song title.

[0002]

2. Description of the Related Art In a conventional digital audio apparatus using a compact disk (CD) or a DAT tape as an audio medium, a track No. A music is searched using (music number), and the music is played after the search.

[0003]

For this reason, the conventional digital audio apparatus has a problem in that it is not possible to recognize what music is played unless the music is played. Further, in the conventional digital audio apparatus, there is no indication as to what kind of music is recorded on the audio medium, and there is a problem in operation performance. In view of the above, it is an object of the present invention to provide a digital audio device capable of searching for and playing a desired song while viewing the song title on a display. Another object of the invention is
An object of the present invention is to provide a digital audio device capable of displaying all song titles recorded on an audio medium on a display unit one by one during a performance.

[0004]

According to the present invention, there is provided a storage means for storing all song names read from a digital audio medium in association with song numbers, and a display for displaying the song name of one song number. and parts, a play key for instructing an operation means for displaying sequentially one by one display means Song recorded in the digital audio medium, a playing songs Song displayed on the display unit, song currently playing Is displayed on the display
The song name is requested by the operating
When the song is read, the song name is read from the storage means and displayed on the display.
The play key is operated after the displayed song name is switched.
Search for the song whose title is displayed on the display
After performing a performance and switching the displayed song title,
Currently playing if there is no operation method and play key operation
And a control unit for displaying a song title of the song .

[0005]

Function The names of all songs read from a predetermined position on the digital audio medium are stored in the storage means in association with the song numbers, and the control unit displays the titles of the songs currently being played on the display unit.
When the song name display is requested by the operation means,
Reads the song title from the storage means and displays it on the display
Displayed when the play key is operated after switching the song title
Search for and play the song with the song name displayed on the
After switching the song title, the operation means and
If no play or play key operation is performed, the song name of the song currently playing
Is displayed .

[0006]

EXAMPLES BACKGROUND compact cassette digital compact cassette tape player for recording and reproducing the audio data by using a tape to a fixed head (DCC tape player) or,
A mini-disc player for recording and reproducing digital audio data on a mini-size disc (mini-disc) has been developed and is being introduced to the market. At predetermined positions of these audio media, a title name, an artist name, song names of all songs, and the like (collectively, text) are recorded. For example, TOC (Table Of Co
ntent) text information is stored. For this reason, the mini-disc player and the DCC player can display the name of the artist and the name of the music number currently being played. In the present invention, a search based on a song title is performed using the text information.

Embodiment (a) of the Present Invention Overall Configuration FIG. 1 is a diagram showing a main portion of a mini-disc player according to an embodiment of the present invention. Reference numeral 11 denotes a mini-disc in which a plurality of songs are recorded, and text information, the overall performance time, the performance time of each song, and the like are recorded in the TOC position. Reference numeral 12 denotes a signal reading unit for optically reading audio data from the mini-disc. Reference numeral 13 performs error detection / correction processing on the signal read from the mini-disc.
A signal processing unit for performing separation processing of OC information, etc., an audio circuit for converting audio data output from the signal processing unit to analog and outputting the analog data from a speaker, an operation unit having various operation keys and a display unit, Reference numeral 16 denotes a system controller for controlling the whole, and 17 denotes various servo control units of the mini disc player. In the operation unit 15, 1
5k and 15m are vertical scroll keys, 15q is a play key, and 15r is a display unit, which will be described later with reference to FIG. The system controller 16 has a microcomputer configuration, and a built-in RAM 16a stores a text T
XT, the playing time of each song, the currently playing song number MNO. ,
The number (displayed song name number) DMN of the song currently being displayed is stored.

(B) Configuration of Operation Unit When the operation unit 15 is mounted on a vehicle, for example, as shown in FIG. 2, the operation unit 15 can be shared by a tuner, a mini-disc player, and a continuous-play CD player. In the following, only the function of the CD / MD (mini-disc) will be described for the key shared with each audio source, and the function of the tuner will not be described. 15a is a tuner / MD / CD switching key, 15
b is a power key, 15c is a mode switching key for switching the mode from volume → bus → treble → fader, 15d
Is the value in the selected mode (eg volume value)
Key (right: up, left: down), 15e is a mini-disc insertion / ejection section, 15f is a music scan key for CD / MD, 15g (MIX) is a random play key, and 15h (REPEAT) is a repeat key. , 15i
(SCAN) is an intro scan key for playing the beginning of each song every 10 seconds, and 15j (DISP) is a display switching key for switching the display. The above-mentioned keys are the same as the conventional keys, and the following keys and display unit are provided for the first time in the present invention.

Reference numerals 15k and 15m denote vertical scroll keys for scrolling up and down the text information (song number and song name) one by one on the display unit, 15n and 15p horizontal scroll keys for scrolling and displaying the song title horizontally. 15q is a play key for searching for and playing a song having the displayed song title. Reference numeral 15r denotes an LCD display (liquid crystal display), which is a display area 15r _A , 15r of 16 digits and two levels.
has r _B, text information and the playing time of each song, the total playing time, so that the elapsed time and the like can be appropriately switching display. Of FIG. 2, text information shows the display the artist name in the upper part of the display region 15r _A, displaying a part track number and (06) of Song on the lower display region 15r _B Example. In the display of text information, artist name in the upper display area 15r _A is, track number and names are displayed in the lower display area 15r _B. And the vertical scroll key 15
Operating the k, scroll display is performed sequentially track numbers and Song towards music number greater vary from pressing the songs by one lower display region 15r _B, when operating the vertical scroll 15 m, each time pressing The song number and the song name are sequentially changed to the smaller song number, and the scroll display is performed one by one. Moreover, by operating the horizontal scroll key 15n, shift Song in the lower display region 15r _B is one digit at a time left for each pressing (music number is not shifted), when operating the horizontal scroll 15p, Song every pressing Are scrolled and displayed one digit at a time to the right.

(C) Configuration of the display unit FIG. 3 is a configuration diagram of a portion related to the display of the song title in the LCD display unit 15r, and 15r-1 stores a character code from the first digit to the last digit of the song title. A line buffer 15r-2 is a display start digit storage unit for storing the display start digit K of the song title.
It counts up each time the horizontal scroll key 15n is pressed, and counts down each time the horizontal scroll key 15p is operated. Also, the vertical scroll keys 15k, 1
Reset every time 5m is operated. Since the minimum value of K is 1 and the maximum value is 12 displayable digits, if the length of the music title is C digits, it is (C-11). 15r-3 is a select circuit that selects a character code of 12 digits from the display start digit, 15r-4 is a character pattern generator that outputs a character pattern corresponding to the 12-digit character code output from the select circuit, 15r Reference numeral -5 denotes a pattern storage unit for storing a 12-digit character pattern, and reference numeral 15r-6 denotes an LCD display unit for displaying a 12-digit character pattern.

(D) Overall Operation Hereinafter, the overall operation will be described with reference to the flowcharts of FIGS. After setting the mini-disc, M
When D is selected (step 101), the system controller 16 controls various servo systems, reads text information and performance time information from the mini-disc (TOC position) before starting the performance and stores it in the RAM 16a (step 1).
02), the performance (play) is started (step 10)
3). Then, the music number MNO. Find the song name according to the text information,
The song number, song title, artist name, etc. are sent to the LCD display unit 15r of the operation unit 15 (step 104). This allows
The LCD display unit 15r displays the artist name and the song number, and also displays the song name from the first digit (step 10).
5). Note that the song title cannot be displayed in all digits, but is partially displayed.
The displayed contents can be changed by operating the key 15j. Thereafter, while the performance is continued, it is checked whether or not the performance of the music is completed (steps 106 and 1).
07) If the performance of the music has been completed, it is checked whether or not the performance of all the music has been completed (step 108). If the performance has been completed, the processing is terminated. Otherwise, the processing returns to step 104 and the subsequent processing is repeated. ... See FIG. 4 above

When the horizontal scroll keys 15n and 15p are operated in the state where the song title is displayed, the LCD display unit 15r sets the song title start digit to the maximum value (C-
The number is increased or decreased up to 11) or the minimum value 1 (step 201), and thereafter, the title of the 12 digits from the start digit of the title is displayed (step 202). That is, when the horizontal scroll key 15n is operated, the song title in the lower display area 15r _B shifts leftward by one digit each time the key is pressed (the song number is not shifted), and when the horizontal scroll 15p is operated, the song title is pushed each time the key is pressed. Are displayed shifted one digit to the right. ... See FIG. 5 above

When the vertical scroll key 15k is operated, the system controller 16 sets the display name music number DMN to 1 (1 → i, step 301) and searches the RAM 16a for the music name corresponding to the i-th music number. It sends a tune name search and numbered curved on the LCD display unit 15r, to display the track number and Song in the lower display region 15r _B of the display unit. still,
The song name is displayed for 12 digits from the first digit (step 30).
2). Next, it is monitored whether or not the elapsed time after the operation of the key 15k has reached the set time (step 303). The elapsed time is set to 0 every time one of the vertical scroll keys 15k and 15m or the horizontal scroll keys 15n and 15p is operated.
And the elapsed time is counted from 0 again.
If the elapsed time has not reached the set time, play key 1
It is checked whether or not 5q has been pressed (step 304). If it has not been pressed, the vertical scroll keys 15k, 15k
It is checked whether m has been pressed (step 305), and if not, the process returns to step 303 and repeats the subsequent processing. On the other hand, when one of the vertical scroll keys 15k and 15m is pressed, i + 1 → i according to the pressed key.
To increase the displayed song title number i (vertical scroll key 1
5k) or i-1 → i to reduce the displayed music title number i (press the vertical scroll key 15m) and reset the elapsed time to 0 (step 306).
Thereafter, the process returns to step 302 to display the song number and song title of the i-th song. Note that the minimum value of the displayed song title number i is 1,
The maximum value is the number of songs recorded on the mini disc.

Thereafter, by performing the same operation, the titles of the songs recorded on the mini-disc can be displayed and viewed one by one. By operating the horizontal scroll keys 15n and 15p while the song title is being displayed, the title can be scrolled and displayed in the horizontal direction. In addition, the display of the music title can be performed even during the performance. If the elapsed time reaches the set time without pressing the vertical scroll keys 15k and 15m, "YE"
S ", and the system controller 16 holds the music number MNO. , The name of the song, the playing time, etc. are sent to the LCD display unit 15r for display (step 30).
7), end the processing. The song name is displayed by the above operation, and when a desired song is found and the user wants to listen to it, the play key 15q is pressed. Accordingly, "YES" is determined in step 304, and the system controller 16 searches for the track number of the displayed track name (step 30).
8). If the song number read from the sub-code of the mini-disc matches the search song number, the search is completed (step 30).
9) Thereafter, the music piece is performed by performing the processing of step 103 and subsequent steps in FIG. ... See FIG. 6 above

Although the present invention has been described with reference to the case where the present invention is applied to a mini-disc player, the present invention can also be applied to a DCC player since text information is also recorded on a DCC tape. In the above description, the song title is scrolled and displayed one by one every time the vertical scroll key is operated. However, it is also possible to automatically scroll every predetermined time and display all the songs only by depressing once. As described above, the present invention has been described with reference to the embodiments. However, the present invention can be variously modified in accordance with the gist of the present invention described in the claims, and the present invention does not exclude these.

[0016]

As described above, according to the present invention, all music titles read from a predetermined position on the digital audio medium are stored in the storage means in association with the music numbers, and when the music name display is requested by the operation means, The control unit sequentially reads the song titles from the storage unit and displays them on the display unit. When the play key is operated during the display of the song titles, the control unit searches for and plays the song of the song title displayed on the display unit. The user can search for and play a desired tune while viewing the tune name on the display.
Further, according to the present invention, all the music titles recorded on the audio medium can be displayed on the display unit one by one even during the performance,
It is possible to easily recognize what kind of music is recorded on the audio medium while listening to the performance, and to improve the operation performance. According to the present invention, a digital
All song titles read from the audio media
Stored in the storage means in association with the song number, currently playing
When the song title of the song is displayed on the display,
When a song title display is requested, the song title is read from the storage
Display on the display, and the play key is
When operated, the song with the song name displayed on the display is supported.
To play a song.
Even so, it is possible to select a desired song and play it.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a mini-disc player.

FIG. 2 is a configuration diagram of an operation unit.

FIG. 3 is a configuration diagram of a portion related to music title display.

FIG. 4 is a processing flowchart during play.

FIG. 5 is a processing flowchart when a horizontal scroll key is operated.

FIG. 6 is a processing flowchart at the time of operating a vertical scroll key.

[Explanation of symbols]

 11 mini disk 13 signal processing unit 15 operation unit 15k, 15m vertical scroll key 15q play key 15r LCD display unit 16 system controller

Claims (1)

(57) [Claims] 1. A digital audio apparatus for searching for a plurality of songs recorded on a digital audio medium by song titles, a storage means for storing all song titles read from the digital audio medium in association with song numbers, A display for displaying the title of the song, and a title for the song recorded on the digital audio medium.
An operation means for displaying on the display means one by one, a play key for instructing the performance of the music of the music name displayed on the display means, and an operation when the music name of the music currently being played is displayed on the display section.
When the song name display is requested by the writing means, the storage means
Read the song title, display it on the display, and switch the song title
Later, when the play key is operated, it is displayed on the display means.
Search for and play the song with the song name shown, and cut the displayed song name.
After the replacement, the operation means and the play key
If no operation is performed, the title of the currently playing song is displayed.
A digital audio device comprising a control unit .