JP2003109362A - Device for reproducing information recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information recording medium reproducing device capable of performing reproduction from a halfway position of a desired track with an easy operation in a short time. SOLUTION: A CPU 10 controls a numerical character key of an operating means so as to be switched to a key for designating the jump time from the time of reproduction start position of a track.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium reproducing apparatus for reproducing an information recording medium in which main data is recorded in track units.

[0002]

2. Description of the Related Art A CD (Comp.
There is a CD player that plays an act Disc).

The CD reproducing device has a track search function for searching the main data recorded on the CD for each track. The track search function is available in the CD lead-in area.
It is executed using the absolute time (minute, second, frame) information indicating the reproduction start position and the reproduction end position of each track in the TOC information recorded in the TOC (Table Of Contents) area.

To perform the track search function, a CD
The track desired to be reproduced is designated from the operation unit provided in the reproducing apparatus. For example, when reproducing the main data of the second track, the main data can be reproduced from the start position of the second track by pressing the number key “2” provided on the operation unit.

When the track search function is executed in this way, the reproduction of the main data starts from the start position of the track. If you want to play the main data from the middle of the track, the first method is to press the number key of the number corresponding to the track number of the track you want to play to find the beginning, and then fast forward to the desired position. Search for and start playback. The second method is to press the number key of the number corresponding to the track number of the track next to the desired track for cueing, then rewind to search for the desired position and then start playback. .

[0006]

However, the first and second methods described above require a lot of time to search for a desired position manually by fast-forwarding or fast-rewinding after cueing the track. There is a problem that is spent. In particular, the reproduction time of one track is long, and much time is spent to search for a position near the middle thereof.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide an information recording medium reproducing apparatus capable of performing reproduction from a desired position in the middle of a track in an easy operation and in a short time.

[0008]

In order to solve the above problems, the invention according to claim 1 of the present application provides information for reproducing main data of an information recording medium in which main data is recorded as at least one track. In a recording medium reproducing apparatus, a reproducing means for reproducing main data recorded on an information recording medium, an operating means having a numeric key for designating a track to be reproduced by the reproducing means, and a track designated by the numerical key are provided. And a control means for controlling the reproduction means to reproduce, wherein the control means, when the numeric key is pressed for a time longer than a predetermined time, jumps the numeric key from the time of the reproduction start position of the track. It is characterized by controlling so as to switch to a key for designating.

Further, the invention according to claim 2 of the present application is recorded on an information recording medium in an information recording medium reproducing apparatus for reproducing main data of an information recording medium in which main data is recorded as at least one track. A reproducing means for reproducing the main data, an operating means having a numeric key for designating a track to be reproduced by the reproducing means, and a control means for controlling the reproducing means to reproduce the track designated by the numerical key. And the control means is
A key for designating a track to be played back by the numeric keys and designating a jump time from the time of the playback start position of the numeric key for a predetermined time after the playback of the designated track is started by the playback means. It is characterized by controlling to switch to.

According to a third aspect of the present invention, in the information recording medium reproducing apparatus according to the second aspect, there is further provided display means for displaying the number of the track designated by the numeral keys, and the predetermined number is set. The track number displayed on the display means is blinked during the time.

According to a fourth aspect of the present invention, in the information recording medium reproducing apparatus according to the first or second aspect, the jump time is specified in minutes.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of an information recording medium reproducing apparatus according to the present invention.

In FIG. 1, 1 is a CD, 2 is a spindle motor, 3 is a servo control circuit, 4 is a pickup feed motor, 5 is a pickup, 6 is a preamplifier, 7 is a signal processor, 8 is a digital-analog converter (DAC). ), 9 is an output unit, 10 is a CPU (Central Processing Unit), 11 is a display unit, 12 is an operation unit, and 13 is a ROM (Read On Memor).
y) and 14 are RAMs (Ramdam Access Memory).

The operation means 12 includes a numerical key (not shown) for designating a desired track for reproduction, a skip key for searching the next track during reproduction of the track, a fast forward key for fast forward, and a fast reverse. It has a fast-reverse key, a playback key, a playback pause key, and a playback stop key.

When the CD 1 is mounted on a turntable (not shown), the CPU 10 controls the servo control circuit 3 to cause the pickup 5 to read the information recorded in the TOC area and stores the read TOC information in the RAM 14. Control.

In order to execute the track search function, the numeric key of the number corresponding to the track number of the track desired to be reproduced is pressed. CPU10 is a CD stored in RAM14
The servo control circuit 3 is controlled so as to refer to the reproduction start absolute time corresponding to the specified track number from the TOC information 1 and locate the track corresponding to the specified track number, and to start the reproduction.

The main data read from the CD 1 by the pickup 5 is waveform-shaped and amplified by the preamplifier 6 and then input to the signal processing unit 7. The signal processing unit 7 performs demodulation, error correction, extraction of the synchronization signal, etc.
Output main data to. The DAC 8 converts the digital signal into an analog signal and outputs it to the output unit 9.

The output unit 9 outputs the analog signal converted by the DAC 8 to the outside.

The ROM 13 is a read-only storage device. The information stored by the CPU 10 is read. The ROM 13 stores a predetermined time (for example, 2
(For 2 seconds). Further, the ROM 13 is the operation means 1
The operation program of each key 2 is stored.

The CPU 10 has a built-in timer. The timer may not be built in the CPU 10 but may be external.

FIG. 2 is a flow chart for explaining the reproducing method of the information recording medium reproducing apparatus of this embodiment. Here, a case will be described as an example where the reproduction is performed from the position three minutes after the reproduction start position of the fifth track having the track number “5” recorded on the CD 1.

Step S1 is a step of mounting the CD 1 on the turntable.

In step S2, the TOC information recorded in the TOC area of the CD 1 is read, and the TOC read by the CPU 10 is read.
This is a step of storing information in the RAM 14.

In step S3, from the read TOC information,
This is a step in which the CPU 10 causes the display means 11 to display the total track number.

Step S4 is a step in which the CPU 10 determines whether or not the numeric key having the number corresponding to the track number of the track desired to be reproduced has been pressed. When the number key of the number corresponding to the track number of the track recorded on CD1 is pressed, the process proceeds to step S5, and C
When a numeric key other than the number corresponding to the track number of the track recorded in D1 is pressed, step S
Return to 4. For example, if 10 tracks of main data are recorded on CD1 and the numeric key “5” is pressed,
The CPU 10 obtains the reproduction start absolute time of the fifth track having the track number “5” from the TOC information stored in the RAM 14.

Step S5 is a step in which the CPU 10 counts the time during which the numeric key of the number corresponding to the track number of the track desired to be reproduced is pressed in step S4. In this case, the numeric key “5” is ON
When it is done, the timer which is built in the CPU 10 or externally attached to the CPU 10 starts counting, and when the number key “5” is turned off, the counting is stopped.

In step S6, the CPU 10 determines whether or not the counted time in step S5 is equal to or longer than a predetermined time (for example, 2 seconds) stored in the ROM 13. If the counted time is equal to or longer than the predetermined time, the process proceeds to step S8. If the counted time is less than the specified time, step S
Proceed to 7. The CPU 10 reads a predetermined time (for example, 2 seconds) stored in the ROM 13 and compares it with the time counted by the timer.

In step S7, the track having the track number corresponding to the number of the pressed numeric key is reproduced. In this case, the fifth track number "5"
Play the track.

Step S8 is a step in which the CPU 10 controls to switch the numeric key from the key designating the cue reproduction of the track to the key designating the jump time from the reproduction start position of the designated track. CPU10
Reads the operation program that specifies the jump time from the time of the track start position stored in the ROM 13, and controls to switch to the operation program that specifies the cue reproduction of the track that has been assigned to the numeric keys.

Step S9 is a step of designating the jump time from the numeric keys. In this case, press the number key "3". The CPU 10 calculates the absolute time by adding the jump time of 3 minutes to the reproduction start absolute time corresponding to the track number “5”. Generally, most of the recording time recorded on a CD is less than one hour, so it is not preferable to specify the jump time in units of one hour. Also,
Since one track is about 3 to 5 minutes, specifying the jump time in seconds makes the jump time too short and it is difficult to specify the desired playback position. Therefore, in the information recording medium reproducing apparatus of the present embodiment, the jump time is designated in minutes.

Step S10 is a step in which the CPU 10 controls the pickup 5 to jump to the absolute time calculated in step S9 and start the reproduction of the main data. In this case, the CPU 10 moves the pickup 5 to a position 3 minutes after the reproduction start position of the fifth track of the track number "5" by pressing the number key "3" and starts the reproduction of the main data.

FIG. 3 is a flow chart for explaining another reproducing method of the information recording medium reproducing apparatus of this embodiment. An example will be described in which the reproduction is performed from the position 3 minutes after the reproduction start position of the fifth track having the track number “5” recorded on the CD 1.

Step S11 is a step of mounting the CD 1 on the turntable.

In step S12, the TOC information recorded in the TOC area of the CD 1 is read, and the TOC read by the CPU 10 is read.
This is a step of storing the C information in the RAM 14.

In step S13, the CPU 10 causes the display means 11 to display the total track number from the read TOC information.

Step S14 is a step in which the CPU 10 determines whether or not the numeric key having the number corresponding to the track number of the track desired to be reproduced has been pressed. CD 1
If the number key of the number corresponding to the track number recorded in is pressed, the process proceeds to step S15, and if the number key other than the number corresponding to the track number recorded in CD1 is pressed, the process proceeds to step S14. Return. For example, when the main data of 10 tracks is recorded on the CD1 and the numeric key “5” is pressed, the CPU 10 causes the RAM 1
From the TOC information stored in 4, the absolute playback start time of the fifth track having the track number "5" is obtained.

Step S15 is a step of starting reproduction of the fifth track having the track number "5" recorded on the CD1.

Step S16 is a step in which the CPU 10 controls the number keys to be switched from a key designating the cue reproduction of the track to a key designating the jump time from the time of the track reproduction start position. CPU10 is ROM13
The operation program for specifying the jump time from the time of the track start position stored in is read, and control is performed to switch to the operation program for specifying the cue reproduction of the track that has been assigned to the numeric keys.

The step S17 is the same as the step S14.
The CPU 10 is a step in which the number of the pressed numeric key is displayed on the display means and the displayed number is blinked for a predetermined time (for example, 10 seconds) stored in the ROM 13. When the number key is pressed, the CPU 10 displays the number of the pressed number key, reads a predetermined time (for example, 10 seconds) stored in the ROM 13, and is built in the CPU 10 or externally attached to the CPU 10. A timer counts a predetermined time (for example, 10 seconds). While counting the predetermined time, CPU1
0 controls the displayed number to blink.

A step S18 determines whether or not the jump time is designated within a predetermined time (for example, 10 seconds).
This is the step that the CPU 10 makes a determination. If the jump time is specified within the predetermined time (for example, 10 seconds), the process proceeds to step S19, and if the predetermined time (for example, 10 seconds) has not been specified for the jump time, the track number is displayed. Continue playing the fifth track of "5". In this case, press the number key "3". CPU10
Calculates the absolute time by adding the jump time of 3 minutes to the reproduction start absolute time of the fifth track having the track number “5”. The CPU 10 has a predetermined time (for example, 10
When the numeric key that specifies the jump time within (seconds) is pressed, the number is displayed from blinking. When the jump time is designated or a predetermined time has elapsed, the CPU 10
Reads the operation program that specifies the cue reproduction of the track stored in the ROM 13, and controls to switch to the operation program that specifies the jump time that has been assigned to the numeric keys. By blinking the number,
The user can know that the numeric keys have been switched to keys that specify the jump time.

Step S19 is a step in which the CPU 10 controls so that the pickup 5 jumps to the absolute time calculated in step S18 for reproduction. In this case, the CPU 10 pushes the number key “3” to move the playback start position of the fifth track of the track number “5” to 3
The pickup 5 is moved to a position after a minute and the main data is reproduced.

In the above embodiment, the operating means 12 may be a remote control which can be operated remotely.

In the above embodiment, the information recording medium is a CD, but the present invention is not limited to a CD and can be applied to an information recording medium such as an MD or a DVD.

[0044]

As described above, according to the information recording medium reproducing apparatus of the present invention, it is possible to provide the information recording medium reproducing apparatus capable of performing the reproducing operation from the middle position of the desired track in an easy operation and in a short time. .

[0045]

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an information recording medium reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a reproducing method according to this embodiment.

FIG. 3 is a flowchart illustrating another reproducing method according to this embodiment.

[Explanation of symbols]

1 CD 2 spindle motor 3 Servo control circuit 4 Pickup feed motor 5 pickups 6 preamplifier 7 Signal processing unit 8 Digital-to-analog converter 9 Output section 10 CPU 11 Display means 12 Operation means 13 ROM 14 RAM

Claims (4)

[Claims] 1. An information recording medium reproducing apparatus for reproducing main data of an information recording medium in which main data is recorded in track units, and reproducing means for reproducing the main data recorded in the information recording medium, and the reproducing means. Is provided with an operation means having a numeric key for designating a track to be reproduced, and a control means for controlling the reproduction means to reproduce the track designated by the numeric key. The information recording medium reproducing apparatus is characterized in that when the key is pressed for a time longer than a predetermined time, the numerical key is controlled so as to switch to a key for designating a jump time from the time of the reproduction start position of the track. 2. An information recording medium reproducing apparatus for reproducing main data of an information recording medium in which main data is recorded in track units, and reproducing means for reproducing main data recorded in the information recording medium, and the reproducing means. Is provided with an operating means for designating a track to be played back, and a control means for controlling the playback means to play back the track designated by the numeric key, the control means playing back with the numeric key. For a predetermined time after the track to be designated is designated and the playback means starts playing the designated track, the numeric key is controlled to be switched to a key for designating a jump time from the time of the playback start position of the track. An information recording medium reproducing apparatus characterized by the above. 3. The information recording medium reproducing apparatus according to claim 2, further comprising display means for displaying the number of the track designated by the numeral keys, during the predetermined time,
An information recording medium reproducing apparatus, wherein the track number displayed on the display means is blinked. 4. The information recording medium reproducing apparatus according to claim 1 or 2, wherein the jump time is designated in minutes.