JPH11250634A - Disk recording/reproducing device and disk recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To specify a signal recording region where a digital audio signal has already been recorded and to achieve overwriting by providing a means for specifying a specific information signal recording region based on indexing information and a means for recording data at an information signal region that is specified by the specifying means. SOLUTION: A user specifies a track to be rewritten by a program. As an example, when tracks 2 and 5 and a non-written region are specified, a maximum of 25 minutes data can be rewritten. When the program is completed, first a start address 2-S of the track 2 is set to a recording start position and it is checked whether an end address 2-E has been reached or not during recording. When it is reached, a start address 5-S of the track 5 is newly set to a recording start position. Then, it is similarly checked whether the end address of the track has been reached or not during recording. When it is judged that the program has been completed, recording automatically ends.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording / reproducing apparatus such as an MD (mini-disc) recording / reproducing apparatus.

[0002]

2. Description of the Related Art An MD recording / reproducing apparatus records an audio signal on a rewritable magneto-optical disk in a digital system, and converts the digitized audio signal into an ATRAC (Adaptive Transform) signal.
The data is compressed by a high-efficiency encoding process called “form Acoustic Coding” and magneto-optically recorded on the magneto-optical disk.

[0003]

In the above-mentioned MD recording / reproducing apparatus, an information signal such as audio is converted into a digital signal and recorded, and at the same time, track address information, text information and the like are determined in a predetermined index area called UTOC. And track management. However, it is not possible to specify a signal recording area in which a digital audio signal has already been recorded and perform overwrite recording. For example, it is not possible for the user to select track 2 and overwrite using only the signal recording area used by track 2. Even if the user performs a new recording after erasing the track 2, the same recording area as the signal recording area used by the track 2 is not always used. If a track is erased without any unrecorded area on the disc, the recording area released by the erasing operation will be a new recording area, but recording will always be performed on the last unrecorded area. Since recording is performed with priority, if there is an unrecorded area, recording is first performed on that area.

[0004]

According to the present invention, there is provided an information signal recording area in which an information signal is recorded and an index information recording area in which index information for the information signal recording area is recorded. What is claimed is: 1. A disc recording / reproducing apparatus for recording and reproducing an information signal on and from a disc, comprising: a designation unit for designating a specific information signal recording area based on the index information; And a recording / reproducing apparatus provided with a recording means for performing recording.

Further, in the present invention, the specifying means does not provide a disk recording / reproducing apparatus capable of specifying an already recorded information signal recording area and an unrecorded area.

Further, according to the present invention, a disc recording method for recording an information signal on a disc having an information signal recording area for recording an information signal and an index information recording area for recording index information for the information signal recording area A disc recording / reproducing apparatus comprising: a step of designating a specific information signal recording area based on the index information; and a step of recording on the designated information signal recording area. It is.

According to the present invention, there is provided a disk recording method capable of designating an already recorded information signal recording area and an unrecorded area in the step of designating the specific information signal recording area. is there.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 is a circuit block diagram showing a configuration of an MD recording / reproducing apparatus to which the present invention is applied. In FIG. 1, reference numeral 1 denotes an analog signal input terminal to which an analog audio signal such as an audio signal is input, 2 denotes an A / D conversion circuit for converting the audio signal input from the analog signal input terminal 1 into a digital signal, Is an ATR which compresses the digital signal output from the A / D conversion circuit 2 and converts it into a highly efficient encoded digital signal.
This is an AC compression processing circuit.

Next, reference numeral 4 denotes a digital signal processing circuit for interleaving the digital signal processed by the ATRAC compression processing circuit 3, adding an error correction code, and further converting the digital signal to a subcode signal. This is a shock-proof memory for temporarily storing data, and is constituted by a DRAM (Dynamic RAM).

Reference numeral 6 denotes an optical pickup for converting information data read from the MD disk 7 into electric signals.
Is a reproduction RF amplifier circuit for converting information data from the optical pickup 6 into a digital signal and generating a servo signal; and 9 is a digital signal processing for performing processing such as error correction on a signal output from the reproduction RF amplifier circuit 8. Circuit, 1
Reference numeral 0 denotes an ATRAC decompression processing circuit that decompresses the signal processed by the digital signal processing circuit 9 and returns the signal to an original digital signal. Reference numeral 11 denotes a D / A that converts a digital signal output from the ATRAC decompression processing circuit 10 into an analog signal. A conversion circuit 12 is an analog signal output terminal for outputting an analog signal output from the D / A conversion circuit 11.

Reference numeral 13 denotes an optical pickup 6 which is an MD.
A feed motor for reciprocatingly driving the disk 7 toward the inner and outer circumferences, and is controlled via a servo control circuit 14 by a tracking error signal output from the RF amplifier circuit 8. Reference numeral 20 denotes a recording RF amplifier circuit, and reference numeral 19 denotes a magnetic head used for recording, which is linked so as to move together with the optical pickup 6.

Next, 15 is a spindle motor for rotating the MD disk 7, and 16 is an MD control circuit for controlling the MD reproducing apparatus. And controls the sub-code data and controls the digital signal processing circuit 4, the digital signal processing circuit 9, the servo control circuit 14, and the like. Reference numeral 18 denotes a display device. In addition, a device (M
D + CD component), it is possible to easily perform recording on an MD using a CD as a source.

Next, the operation of the present invention will be described in detail with reference to the flowchart of FIG. First, the user programs (designates) a track to be replaced (S1). In addition,
The designation of a track is not limited to one track, but it is also possible to designate a plurality of tracks and unrecorded areas, thereby making it possible to perform replacement recording for a long time.

FIG. 3 shows an example of the contents thus programmed. Thus, the table of the track number of the track to be replaced with the program number is provided. Since this information is displayed on the display device, the user can easily confirm the information.

FIG. 4 shows an example of the recording state of each track. 2, 2-S indicates the start address of track 2, 2-E indicates the end address of track 2, 5-S indicates the start address of track 5, and 5-E indicates the end address of track 5. And the recording time of track 2 is 3
Minutes, the recording time of track 5 is 7 minutes, and the recording time of the unrecorded area is 15 minutes.
Replacement recording for 5 minutes can be performed.

As described above, when the program of the track to be replaced is completed by the user, the variable i for storing the program number is initialized (S2).

Then, the start address of the track corresponding to the program number specified by the variable i is set as the recording start position. Here, first, the start address 2- of the track 2
S is set to the recording start position. During recording, it is checked whether the end address of the track has been reached (S5) and whether the stop button has been pressed (S6).

When the end address of the track corresponding to the program number specified by the variable i is reached (end address 2-E of track 2), the value of i is increased by one (S7).

Next, the end of the program is determined (S3). Here, when the value of the variable i exceeds the maximum value of i, the end of the program is determined. That is, as is apparent from FIG. 3, since the maximum value of i is 3 in this example, it is not determined that the program ends until i exceeds 3.

Now, since the value of the variable i is 2, the start address of the track corresponding to the program number specified by the variable i is the start address 5-S of the track 5, which is a new recording start position. Is set to

As described above, during recording, it is checked whether the end address of the track has been reached (S5) and whether the stop button has been pressed (S6). During recording, 5-M in FIG.
If the stop button is pressed at the position indicated by, the recording is stopped. The remaining area of the area of the track 5 (5-M to 5
The area up to -E) is released as an unused area.

On the other hand, if the termination of the program is determined in S3 without pressing the stop button, the recording is automatically terminated.

[0023]

As described above, according to the present invention, a disc having an information signal recording area for recording an information signal and an index information recording area for recording index information for the information signal recording area is provided. What is claimed is: 1. A disc recording / reproducing apparatus for recording and reproducing an information signal, comprising: a designation means for designating a specific information signal recording area based on the index information; and a recording means for recording the information signal recording area designated by the designation means. Recording means for performing overwriting on a specific already-recorded area, which was conventionally impossible.

Further, according to the present invention, the designating means can designate an information signal recording area and an unrecorded area which have already been recorded, so that an unrecorded area can be added in addition to a specific recorded area. Can be easily overwritten.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram showing a configuration of the present invention.

FIG. 2 is a flowchart showing the operation of the present invention.

FIG. 3 is a diagram showing an example of the contents of a program.

FIG. 4 is a diagram illustrating an example of a recording state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Analog signal input terminal 2 A / D conversion circuit 3 ATRAC compression processing circuit 4 Digital signal processing circuit 5 Shock proof memory 6 Optical pickup 8 Reproduction RF amplifier circuit 9 Digital signal processing circuit 10 ATRAC expansion processing circuit 11 D / A conversion circuit 12 Analog signal output terminal 13 Feed motor 14 Servo control circuit 15 Spindle motor 16 MD control circuit 17 Operation key group 18 Display device 19 Magnetic head 20 Recording RF amplifier circuit

Claims (4)

[Claims] 1. A disc recording / reproducing apparatus for recording / reproducing an information signal on / from a disc having an information signal recording area for recording an information signal and an index information recording area for recording index information for the information signal recording area. Wherein a designation means for designating a specific information signal recording area based on the index information, and a recording means for recording on the information signal recording area designated by the designation means are provided. Disk recording and playback device. 2. A disk recording / reproducing apparatus according to claim 1, wherein said specifying means can specify an already recorded information signal recording area and an unrecorded area. 3. A disc recording method for recording an information signal on a disc having an information signal recording area in which an information signal is recorded and an index information recording area in which index information for the information signal recording area is recorded. A disc recording / reproducing apparatus, comprising: a step of designating a specific information signal recording area based on the index information; and a step of recording on the designated information signal recording area. 4. A disc recording method according to claim 1, wherein in the step of designating the specific information signal recording area, an information signal recording area and an unrecorded area which have already been recorded can be designated.