JPH0644756A - Reproducing device - Google Patents

Abstract

PURPOSE:To provide a reproducing device displaying excellently the sub data of a music name, etc., on a relative small-sized display part. CONSTITUTION:In the reproducing device in which a track number is added at every data in one unit and reproducing the data recorded in a prescribed recording medium 1, the display part 30 displaying the sub data recorded in the recording medium 1 by a prescribed figure is provided, and a system controller 20 controls so that a scroll display moving from the low-order figure to the high-order figure at a first speed is performed till display using the prescribed figure is performed for displaying the sub data showing the data name of the data recorded in the recording medium 1 on the display part 30 and the scroll display moving at a second speed later than the first speed is performed after the display using the prescribed figure is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus for a recording medium in which sub-data is recorded together with main data such as audio data, and more particularly to a technique for displaying sub-data during reproduction.

[0002]

2. Description of the Related Art Conventionally, when recording data on a recording medium such as a magneto-optical disk, an optical disk or a magnetic tape, various types have been developed which are capable of recording sub-data accompanying main data. For example, when recording voice data such as a musical performance sound, sub data such as a song title can be coded and recorded together with the voice data.

Since the sub data accompanying the main data is recorded on the recording medium in this manner, the content of the recorded data can be known from the sub data at the time of reproduction, and the usability is improved.

[0004]

By the way, at the time of reproducing a recording medium on which such sub data is recorded, in order to know the content of the sub data, a display means for displaying the sub data on the reproducing device is required. . However, in the case of a reproducing apparatus for reproducing audio data, for example, a comparatively small display unit for displaying a track number or the like is usually installed, and it is difficult to display character data such as a song name. Is. Here, if a large-sized display unit capable of displaying characters such as song titles is provided, the structure of the display unit becomes complicated accordingly, and the manufacturing cost of the reproducing apparatus increases, and
There is a problem in that a space for installing a large-sized display unit is required, and the reproducing device is increased in size.

In view of the above points, an object of the present invention is to provide a reproducing apparatus capable of favorably displaying sub-data such as a song title on a relatively small display unit.

[0006]

The present invention is, for example, as shown in FIG. 1, in a reproducing apparatus for reproducing data recorded in a predetermined recording medium 1 by assigning a track number to each unit of data, A display unit 30 for displaying the sub data recorded in the recording medium 1 at a predetermined digit is provided, and the sub data display unit 30 indicating the data name of the data recorded in the recording medium 1 is provided.
Is displayed at a first speed from the lower digit to the higher digit until the display using the predetermined digit is performed, and after the display using the predetermined digit is performed,
The system controller 2 is configured to perform the scroll display in which the moving speed is slower than the first speed and is moved at the second speed.
0 is controlled.

In this case, the track number is displayed at a predetermined digit near the upper digit of the display unit 30 until the sub-data indicating the data name at the relevant digit is displayed by scrolling. It was done.

Further, in this case, as the scroll display of the data name, when the track number is selected, the data name corresponding to the corresponding track number is displayed.

Further, in this case, when the track number of the reproduced data is changed as a scroll display of the data name,
The data name corresponding to the changed track number is displayed.

[0010]

According to the present invention, the display of the data name on the display unit 30 can be favorably performed by the scroll display even when the characters having the number of digits exceeding the display digits provided on the display unit 30 are displayed. In this case, until the display using all the display digits of the display unit 30 is performed, the scroll display is moved at a relatively high speed, so that the display using all the display digits of the display unit 30 is quickly performed. In addition, since the scroll display is moved at a relatively slow speed thereafter, the displayed contents can be easily read.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

This embodiment is applied to a recording / reproducing apparatus for a magneto-optical disk on which audio data is recorded. The structure of this recording / reproducing apparatus is shown in FIG. In FIG. 1, reference numeral 1 denotes a magneto-optical disk, and this magneto-optical disk 1
Is mounted in the recording / reproducing apparatus while being housed in the cartridge 2, and is rotationally driven by the spindle motor 3.
Then, the optical pickup 4 reads out a recording signal recorded by a magnetic field modulation described later on a track formed in a spiral or concentric shape on the disk 1, and a reproduction signal is supplied to a modulation / demodulation processing circuit 6 via an RF amplifier 5. The supplied data is demodulated for the data modulated for recording. The modulation / demodulation processing circuit 6 has a recording modulation / demodulation process of, for example, 8
Digital modulation called -14 modulation (EFM) is performed. The processing in the modulation / demodulation processing circuit 6 is performed under the control of the system controller 20.

Further, each track formed on the magneto-optical disk 1 is prerecorded with address data by wobbling (meandering), and the address decoder 9 detects this wobbling information. That is, the reproduction signal output from the RF amplifier 5 is supplied to the address decoder 9, the address data recorded by wobbling is decoded by this decoder 9, and the decoded address data is passed through the modulation / demodulation processing circuit 6. It is supplied to the system controller 20.

Then, the voice data demodulated by the modulation / demodulation processing circuit 6 is supplied to the memory controller 10 and temporarily stored in the RAM 11 connected to the memory controller 10. The RAM 11 is a data buffer for continuously outputting the audio data even when the reproduction data is temporarily interrupted, and supplies the data stored in the RAM 11 to the compression / expansion processing circuit 12. Then, the data compressed for recording by the compression / expansion processing circuit 12 is expanded to the original data amount, and this expanded data is converted into an analog audio signal by the digital / analog converter 13, and this analog audio signal Is supplied to the audio signal output terminal 14.

Further, the movement of the optical pickup 4 and the recording head 18, which will be described later, in the radial direction of the disk is based on a command from the system controller 20.
It is performed by driving the feed motor 8 under the control. The reproduction signal output from the RF amplifier 5 is supplied to the servo control circuit 7, and servo control is performed to follow the reproduction track. Further, rotation drive by the spindle motor 3 is also performed under the control of the servo control circuit 7.

The recording system is configured so that the analog audio signal obtained at the audio signal input terminal 15 is converted into digital audio data by the analog / digital converter 16 and then this digital audio data is compressed / expanded. A compression process is performed at 12, and the compressed audio data is supplied to the memory controller 10 and temporarily stored in the RAM 11 connected to the memory controller 10.
Then, the voice data read from the RAM 11 is
The modulation / demodulation processing circuit 6 modulates for recording, and the modulated audio data is supplied to the head drive circuit 17 to drive the recording head (magnetic head) 18.

Here, the recording head 18 is arranged immediately above the position where the optical pickup 4 irradiates the disc 1 with laser light (on the side opposite to the disc). Then, at the time of recording, a process of recording the magnetic field generated by the recording head 18 is performed while heating the recording portion with the laser beam emitted from the optical pickup 4 to the disc 1.
This recording process is called a magnetic field modulation recording method.

An operation key 21 is connected to the system controller 20, and recording and reproduction are controlled based on the operation of the operation key 21. Further, the system controller 20 includes a display unit 30 including a liquid crystal display.
Is connected so that data relating to recording and reproduction can be displayed in characters and numbers. Display unit 30 of this example
Are arranged on the front panel of the apparatus or the like, and as shown in FIG. 2, a first display digit 31, a second display digit 32, a third display digit 33 ,.
It is composed of a 9-digit display portion of the 9th display digit 39 and can display up to 9 characters, and a "track number" is displayed above the first display digit 31 and the second display digit 32. And
As a display mode on the display unit 30 under the control of the system controller 20, when displaying more than nine characters, scroll display for moving the display position is performed. This scroll display will be described later. Further, when the scroll display is not performed, it is controlled so that the data such as the track number and the reproduction time are displayed by numbers or the like.

The magneto-optical disk 1 of this embodiment is capable of recording sub-data in addition to audio data, and this sub-data is recorded on a predetermined track (for example, the innermost track) in a predetermined format. It is done. The sub-data recorded on the predetermined track is reproduced (for example, when the disc 1 is mounted on the recording / reproducing apparatus) before recording or reproducing the audio data on the magneto-optical disc 1, and the system controller 20 It is stored in the internal memory. Then, the control of the recording address and the reproduction address when recording and reproducing is performed based on this sub data. When the audio data is recorded, a process of adding data such as the recorded address to the sub data (that is, a process of updating the sub data of the corresponding area) is performed. Also, only sub-data may be updated by editing work or the like.

The contents and data structure of the sub-data will be described. First, as the contents of the sub-data, there are the address data of the track numbers set on the disk 1 and the data recorded at the positions of the respective track numbers. The type data, the track name data given to each track number, and the disc name data given to the disc 1 are recorded. Note that such sub-data is called TOC (Table of Contents).

Then, each sub-data is divided into areas of 32 bits and recorded, as shown in FIGS. The track number described here is a number assigned by dividing the audio data recorded on the disc 1 into units. For example, when a plurality of songs are recorded on one disc, each track number is recorded. No., which is not directly related to the number of data recording tracks formed on the disc 1.

The address data for each track number and the data regarding the type of recording data are recorded as shown in FIG. That is, if it is assumed that N pieces of audio data from track number 1 to track number N (N is an arbitrary integer) are recorded on this disc 1, area 1
Data indicating in which area the address data of the track number 1 is recorded is recorded in 11 (in this case, area 151), and thereafter, the track number N is sequentially recorded one area at a time.
Data indicating the recording area of the address data of the corresponding track number is recorded.

From area 151, 2 areas are 1
Used in pairs, the start address and the type data of the corresponding track number are recorded in the first area, and the end address and the connection data of the corresponding track number are recorded in the next area. In this case, as the type data, the type of recorded audio data (stereo, monaural distinction,
Presence of copy guard, emphasis on / off, etc.)
Is recorded, and the data of the track number to be reproduced next to the corresponding track number is recorded as the connection data.

Further, the track name data given to each track number and the disc name data given to the disc 1 are recorded as shown in FIG. That is,
Data indicating in which area the character data of the track name of track number 1 is recorded (area 251 in this case) is recorded in the area 211, and the track names of the track numbers corresponding to the track numbers N are sequentially recorded one area at a time. Data indicating the recording area of the character data is recorded.

From area 251, 2 areas are 1
Used as a set, the character data of the track name is recorded using 2 areas. Also, when the connection data is recorded last and the number of characters of the track name does not fit within the recording data amount of two areas, the data of the subsequent area number is recorded with this connection data. Therefore, the area in which the character data of one unit of track name can be recorded can be expanded by sequentially indicating the subsequent area numbers in the connection data, and the number of character data of one unit of track name is not limited. (However, there is a limit determined by the capacity of the entire sub-data recording area.)

In the area where the character data of the track name is recorded, the character data of the disc name can be recorded with the same structure. In the example of FIG. 4, area 25
1, 252 are used as the data area of the disc name.

Then, the recording / reproducing apparatus of this embodiment is configured to display the disc name and the track name recorded as sub data in this way on the display unit 30 during reproduction. Hereinafter, the operation at the time of this display will be described with reference to the flowcharts of FIGS.

First, the state in which the disc name is displayed is shown in the flow chart of FIG. 5. In this example, the disc name is displayed when the disc 1 is mounted in the apparatus.
That is, when the disc 1 is loaded into the device (step 101), the sub data recorded on a predetermined track (innermost track, etc.) of the loaded disc 1 is read out, and the memory on the system controller 20 side is read. (Step 102). Then, it is judged whether or not the read sub data includes the data of the disc name (step 1
03), if there is data of the disc name, the lowest display digit 3 of the display unit 30 composed of the 9-digit display digits 31 to 39.
The disk names are scrolled and displayed in order from 9. Therefore, in the initial state, as shown in FIG. 2A, the first character of the disc name is displayed only in the lowest display digit 39. However, at the time of displaying the disc name, the track number is not displayed at the highest display digit 31 as shown in A of FIG. 2 (the portion indicated by “1” in A to C of FIG. 2). .

As the scroll display at this time, after scrolling the display digit by one digit (step 104),
It is judged whether or not the display position of the first character has moved to the highest display digit 31 (step 105), and the highest display digit 3
When not scrolling to 1, wait for 30 msec (step 106) and then return to step 104 to scroll to the next digit.

Then, with this scrolling every 30 msec,
When the display position of the first character moves to the highest display digit 31, the process moves from step 105 to step 107 and waits for 1 second. After waiting for 1 second, until the last character of the disc name is displayed in the lowest display digit 39,
The display is scrolled every 200 msec. That is, after waiting for one second, scroll one digit (step 1
08), the last character of the disc name is the lowest display digit 39
(Step 109), and if the last character is not displayed, wait 200 msec (step 110) and then return to step 108 to scroll to the next digit. Then, when the last character of the disc name is displayed in the lowest display digit 39 by scrolling every 200 msec, the display of the disc name is ended and the process of displaying the track name shown in the flowchart of FIG. 6 is started. .

Next, the process of displaying the track name will be described with reference to FIG.
In the following, it is determined whether or not the track number to be reproduced is selected by operating the key 21 after the disc name is displayed (step 201). Further, it is determined whether or not the track number has changed during the reproduction (step 202). Then, in each judgment, when it is judged that the track number is selected or when the track number is changed, as shown in A of FIG.
The track number currently being reproduced is displayed using the highest-order display digit 31 (step 203). If the track number to be displayed is a two-digit number (that is, the track number is 10 or more), the next display digit 32 is also used. When it is determined that the track number has changed in the track number change determination processing in step 202, reproduction is started from a state in which no reproduction is being performed, and data of the track number currently being reproduced is displayed. Including the case where is obtained.

Simultaneously with the display of the track number, the track name is displayed while scrolling character by character from the lowest display digit 39 (step 204). Therefore, in the initial state, as shown in FIG. 2A, the track number currently being reproduced is displayed in the highest display digit 31 and the first character of the track name of this track number is the lowest display digit. It becomes the state displayed on 39. 2A to 2G are diagrams showing changes in display state over time.

After scrolling this one character, it is judged whether or not the display position of the leading character has moved to the highest display digit 31 (step 205), and scrolling to the highest display digit 31. If not, after waiting for 30 ms (step 206), the process returns to step 204 to scroll to the next digit. At this time, the track number is displayed using the display digit 31 until the first character of the track name moves to the display digit 31 on which the track number is displayed. Therefore, as shown in B and C of FIG. 2, the track number is displayed as it is while the display character is moved every 30 msec, and as shown in D of FIG. The track name is displayed using, and the track number is not displayed.

Then, with this scrolling every 30 msec,
When the display position of the first character moves to the highest display digit 31, the process moves from step 205 to step 207 and waits for 1 second. After waiting for 1 second, until the last character of the track name is displayed in the lowest display digit 39,
As shown in E and F of FIG. 2, the scrolling display is performed every 200 msec. That is, after waiting for 1 second, scrolling by one digit (step 208), it is judged whether or not the last character of the track name is displayed in the lowest display digit 39 (step 209), and the last character is not displayed. In this case, after waiting 200 msec (step 210), the process returns to step 208 to scroll to the next digit. Then, when the last character of the track name is displayed in the lowest display digit 39 by scrolling every 200 msec, the display of the track name is terminated and at the same time, as shown in G of FIG. The display digit 31 is used to display the currently reproduced track number (step 211). Then, when the track number is displayed, the lower display digits 34 to 39 are used to display the current reproduction time in minutes and seconds (m, s). This playback time display is a display of the elapsed time from the beginning of the corresponding track number. Therefore, it is reset every time the track number changes.

By displaying the disc name and the track name in this manner, the disc name and the track name of 9 or more characters are favorably scroll-displayed using the 9-digit display unit 30. That is, until the display using all of the 9-digit display digits 31 to 39 is performed, the character-by-character scrolling is performed in a cycle of 30 ms, and the scrolling is performed at a relatively high speed (arrows S in FIG. (Movement indicated by ₁ ), and it becomes possible to quickly identify the first nine display characters by the nine display digits 31 to 39. The display of the first 9 characters is made to wait for 1 second (that is, the display is stopped for 1 second) after all 9 characters are displayed. Good character recognition.

After that, the scrolling for each character is 2
It is performed at a cycle of 00 msec, and scrolls at a relatively slow speed (movement indicated by arrow S ₂ of E in FIG. 2).
The displayed characters can be identified each time the character is scrolled, and disc names and track names of 9 characters or more can be identified well up to the last character.

Therefore, the displayed characters can be identified better than the conventional scroll display mode in which only the first character is displayed and the last character is displayed at a constant speed. By using the display unit with a small number of digits, it is possible to display a disc name or a track name having a large number of characters well.

Further, in this example, while the upper display digit 31 (or the display digits 31, 32) is not used for displaying the disc name or the track name, this display digit 31 is displayed.
Since the track number is displayed using (or the display digits 31, 32), only the display section 30 can be used to display a good display of the selected (or currently playing) track number. The disc number and the track name can be identified at the same time when the disc name and the track name are identified. Further, after the disc name and the track name are displayed, the playing time is displayed on the display unit 30.
Efficient display using only the.

In the above embodiment, the recording / reproducing apparatus for reproducing a recordable magneto-optical disk has been described, but also for reproducing an optical disk in which data is recorded in pits formed at the time of molding the disk. It is possible to perform reproduction with a reproduction system circuit having a similar configuration.

Further, although the above-mentioned embodiment is applied to the case of displaying the characters of the track name and the disc name, in the case of the display corresponding to the track name and the disc name, the symbols other than the characters and the numbers are displayed. Can also be applied. Further, in the above-described embodiment, the track name and the disc name of the disc on which audio data such as music is recorded are displayed, but the data name of the recording medium on which other data such as video data and program data is recorded is displayed. It may be displayed.

Further, in the above-mentioned embodiment, the invention is applied to the disk recording / reproducing apparatus, but it is needless to say that it is also applicable to the display in the reproducing apparatus having only the reproducing function. It can also be applied to a reproducing apparatus for recording media other than discs. For example, it can be applied to display of sub data recorded on a magnetic tape. Furthermore, the present invention is not limited to the above-described embodiments, and it goes without saying that various other configurations can be adopted.

[0042]

According to the present invention, the display of the data name on the display unit can be favorably performed by the scroll display even if the characters having the number of digits exceeding the display digits provided in the display unit are displayed. In this case, until the display using all the display digits of the display unit is performed, the scroll display that moves at a relatively high speed is used, so that the display using all the display digits of the display unit is quickly performed. In addition, since the scroll display is moved at a relatively slow speed thereafter, the displayed contents can be easily read in a short time.

Further, in this case, the track number is displayed at a predetermined display digit until the scroll display of the data name is performed, so that the track number is displayed using the same display section. The track number is efficiently displayed at the same time as the data name is displayed.

Further, in this case, when the track number is selected, the data name corresponding to the corresponding track number is displayed so that the track is automatically selected when the track number is selected. The data name of
Good display is provided.

Further, in this case, when the track number changes, the data name corresponding to the corresponding track number is displayed, so that the data name of the track is automatically displayed when the track number changes. , Good display is done.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a recording / reproducing apparatus to which an embodiment of the present invention is applied.

FIG. 2 is an explanatory diagram showing a display mode according to an embodiment.

FIG. 3 is a configuration diagram showing a storage state of address data according to an embodiment.

FIG. 4 is a configuration diagram showing a storage state of track name data according to an embodiment.

FIG. 5 is a flowchart showing a disc name display operation according to an embodiment.

FIG. 6 is a flowchart showing a track name display operation according to an embodiment.

[Explanation of symbols]

 1 magneto-optical disk 20 system controller 30 display section 31 first display digit 32 second display digit 33 third display digit 34 fourth display digit 35 fifth display digit 36 sixth display digit 37 seventh display digit 38 eighth display digit 39 9th display digit

Claims (4)

[Claims] 1. A reproducing apparatus for reproducing data recorded on a predetermined recording medium by assigning a track number to each unit of data, and a display section for displaying sub-data recorded on the recording medium at a predetermined digit. Is provided, and the sub-data indicating the data name of the data recorded on the recording medium is displayed on the display unit from the lower digit to the upper digit at the first speed until the display using the predetermined digit is performed. And a scrolling display for moving at a second speed, which is slower than the first speed after the display using the predetermined digit is performed. 2. A track number is displayed at a predetermined digit near the upper digit of the display unit until the sub-data indicating the data name is displayed at the relevant digit by the scroll display movement. The reproducing apparatus according to claim 1. 3. As a scroll display of the data name,
The data name corresponding to the corresponding track number is displayed when the track number is selected.
The playback device described. 4. As a scroll display of the data name,
The reproducing apparatus according to claim 1, wherein when the track number of the reproduction data changes, a data name corresponding to the changed track number is displayed.