WO2005093747A1

WO2005093747A1 - Information recording device, information recording method, information reproducing device, information reproducing method, record control program, reproduction control program and information recording medium

Info

Publication number: WO2005093747A1
Application number: PCT/JP2005/005386
Authority: WO
Inventors: Tsuyoshi Sato
Original assignee: Pioneer Corporation
Priority date: 2004-03-25
Filing date: 2005-03-24
Publication date: 2005-10-06
Also published as: JP2007226849A

Abstract

An information recording device and the like are provided for efficiently completing a process of recording in a hard disk in a short time and improving a degree of freedom in system designing. A recorder R records music information Sp, which has been reproduced and outputted from a player, in the hard disk. The recorder R is provided with a buffer memory (2) for temporarily accumulating the obtained music information Sp, and a CPU (3), which reads out the accumulated music information Sp from the buffer memory (2), records it in the hard disk and controls a reproduction speed of the music information Sp at the player in accordance with an accumulation quantity of the music information Sp in the buffer memory (2).

Description

Information recording apparatus and information recording method, information reproducing apparatus and information reproducing method, recording control program, reproduction control program, and information recording medium

Technical field

The present application belongs to the technical fields of an information recording device and an information recording method, an information reproducing device and an information reproducing method, a recording control program and a reproduction control program, and an information recording medium. Information recording apparatus and information recording method for recording the information, information reproducing apparatus and information reproducing method, recording control program used for information recording processing, reproduction control program used for information reproducing processing, and Belongs to the technical field of information recording media recording these control programs

Background art

Conventionally, when music reproduced from a CD by a CD (Compact Disk) player is recorded on another recording medium such as a node disk (hereinafter, simply referred to as HD), a recorder that performs the recording stores the music. Generally, music information corresponding to the music is temporarily stored in a provided buffer memory, and thereafter, the music information is recorded in the HD while adjusting read timing from the buffer memory. .

[0003] On the other hand, for example, in a car navigation device incorporating the above HD, it is often the case that the guidance process and the process of recording the music information in the HD are performed by one CPU. If the CPU function is devoted to the guidance process, the buffer memory may overflow.In such a case, the recording process on the HD is temporarily stopped and the operation is stopped. It was configured to record at the moment, and also to re-record the entire music information or the stopped position force.

On the other hand, when designing a recording / reproducing system including both the CD player and the recorder described above, conventionally, the reproduction speed of the CD player, the decoding processing speed of the recorder, and the storage capacity of the buffer memory of the recorder have been conventionally considered. At least three had to be decided and the power needed to be designed for the entire system. Disclosure of the invention

Problems to be solved by the invention

However, according to the configuration of the conventional recording and reproducing system described above, when the buffer memory overflows, the recording operation to the HD is stopped, and then the music information at the time of the stop is stopped. There was a problem that it was necessary to read the CD power again and join it with the recorded part.

[0006] Furthermore, when the buffer memory overflows, there is another problem that it is necessary to restart recording from the beginning of the music information.

[0007] Furthermore, in designing a recording / reproducing system, the overall system cannot be designed until the reproduction speed in a CD player is determined as described above, and as a result, the degree of freedom in design is extremely low. There was a point.

[0008] Therefore, the present application has been made in view of the above-mentioned problems, and one example of the object is to enable the recording process on the HD to be completed efficiently and in a short time, and to design the system. Recording apparatus and information recording method capable of improving the degree of freedom in information processing, information reproducing apparatus and information reproducing method, recording control program used for recording the information, reproduction used for reproducing the information An object of the present invention is to provide a control program and an information recording medium on which the control program is recorded.

Means for solving the problem

[0009] In order to solve the above-mentioned problems, an invention according to claim 1 is an information recording apparatus that records externally acquired information on a recording medium, such as a buffer memory that temporarily stores the acquired information. A buffer means for reading out the stored information from the buffer means and recording the information on the recording medium, and an external device for the information in accordance with the amount of the information stored in the buffer means. Speed control means such as a CPU for controlling the speed of acquisition from the CPU.

[0010] In order to solve the above problem, an invention according to claim 3 is the information reproducing apparatus according to claim 2, wherein the acquisition means such as a CPU for acquiring the change information; Speed change means such as a CPU for changing a reproduction speed of the information from the other recording medium based on the content of the change information. [0011] In order to solve the above problems, the invention according to claim 6 relates to an information recording method that is executed by an information recording apparatus that records information acquired by an external force on a recording medium. A buffer for temporarily storing the acquired information in buffer means such as a buffer memory; a recording step for reading the stored information from the buffer means and recording the information on the recording medium; A speed control step of controlling a speed at which the information is acquired from the outside in accordance with the accumulated amount of the information.

[0012] In order to solve the above problems, an invention according to claim 7 provides an information reproducing apparatus that reproduces the information from another recording medium and outputs the information to the information recording apparatus according to claim 6. An acquisition step of acquiring the change information, and a speed change step of changing a reproduction speed of the information from the other recording medium based on the content of the acquired change information. And a step.

[0013] In order to solve the above-mentioned problem, the invention according to claim 8 provides a recording computer included in an information recording device that records acquired information on a recording medium by temporarily storing the acquired information. Buffer means for storing, recording means for reading out the stored information from the buffer means and recording the information on the recording medium, and obtaining the information from the outside in accordance with the amount of information stored in the buffer means It functions as speed control means for controlling the speed.

[0014] In order to solve the above problem, an invention according to claim 9 provides an information reproducing apparatus that reproduces the information from another recording medium and outputs the information to the information recording apparatus according to claim 8. The playback computer included therein functions as acquisition means for acquiring the change information, and speed change means for changing the reproduction speed of the information from the other recording medium based on the content of the acquired change information.

[0015] In order to solve the above problem, an invention according to claim 10 is recorded in a recording control program according to claim 8 so as to be readable in the recording computer.

[0016] In order to solve the above-mentioned problem, an invention according to claim 11 is recorded so as to be readable by the reproduction computer according to claim 9. Brief Description of Drawings

FIG. 1 is a block diagram showing a schematic configuration of an information recording / reproducing system according to an embodiment. FIG. 2 is a block diagram showing a schematic configuration of a player according to the embodiment.

FIG. 3 is a block diagram showing a schematic configuration of a recorder according to the embodiment.

FIG. 4 is a flowchart showing an information recording process according to the embodiment. Explanation of symbols

1 DSP

1A compression processing section

1B extension processing section

2 Buffer memory

3, 14 CPU

4 HDD

5 Memory

6 DZA converter

7 Speaker

8 Operation section

9 Display

10 Spindle motor

11 Pickup

12 Amplifier

13 Decoding unit

15 Servo control section

16 Operation unit

17 Display

S information recording and playback system

P player

R recorder

B ゝ C bus

DK Optical Disk

Bm light beam BEST MODE FOR CARRYING OUT THE INVENTION

Next, the best mode for carrying out the present application will be described with reference to FIGS. 1 to 4. The embodiment described below is an embodiment in which the present invention is applied to an information recording / reproducing system for reproducing music information from an optical disk such as a CD and copying the music information to a node disk.

FIG. 1 is a block diagram showing a schematic configuration of an information recording / reproducing system according to the embodiment, and FIG. 2 is a block diagram showing a schematic configuration of a player constituting the information recording / reproducing system. 3 is a block diagram showing a schematic configuration of a recorder constituting the information recording / reproducing system, and FIG. 4 is a flowchart showing information recording processing according to the embodiment.

First, the overall configuration of the information recording / reproducing system according to the embodiment will be described with reference to FIG.

As shown in FIG. 1, an information recording / reproducing system S according to the embodiment includes a player P as an information reproducing device, a recorder R as an information recording device, and buses B and C connecting these components. ing.

In this configuration, the player P reproduces music information recorded on an optical disc described later at a transfer rate specified by the recorder R, and outputs the music information to the recorder R via the node B.

As a result, the recorder R accumulates and records the music information acquired via the bus B in the HD described later. In addition, the recorder R generates rate control information for designating a transfer rate when transferring music information from the player P, and outputs the rate control information to the player P via the bus C. .

Next, a detailed configuration of the player P will be described with reference to FIG.

As shown in FIG. 2, the player P according to the embodiment includes a spindle motor 10 on which the optical disc DK is rotatably fixed, a pickup 11, an amplification unit 12, a decoding unit 13, an acquisition unit and a speed change unit. It comprises a CPU 14 as means, a servo control unit 15, an operation unit 16, and a display 17.

[0025] In this configuration, the spindle motor 10 rotates the optical disc DK at a rotation speed indicated by the spindle servo control signal Scs from the servo control unit 15. [0026] Then, the pickup irradiates the optical disc DK with a light beam Bm of a constant intensity for information reproduction, and based on the reflected light from the optical disc DK, a detection signal Spp corresponding to the music information recorded on the optical disc DK. Is generated and output to the amplifier 12.

As a result, the amplification unit 12 amplifies the detection signal Spp with a preset amplification factor, and outputs the amplified signal to the decoding unit 13 as an amplified signal Samp. In addition, the amplifying unit 12 generates an error signal Se for use in tracking servo control and focus servo control, which will be described later, from the detection signal Spp, and outputs the error signal Se to the servo control unit 15. At this time, the error signal Se includes a focus error signal, which is not illustrated in the optical disc DK, indicating a position shift of the light beam B condensing position in a direction perpendicular to the information recording surface, and a focusing error signal of the condensing position. And a tracking error signal indicating a positional shift in a direction parallel to the information recording surface from a recording track on the information recording surface on which the music information to be reproduced is recorded.

[0028] Then, the decoding unit 13 performs a predetermined decoding process on the amplified signal Samp based on the control signal Sdc from the CPU 14, and obtains the music information Sp via the recorder B via the node B. Output to R.

On the other hand, the CPU 14 receives the rate control information Ssp transmitted from the recorder R via the bus C.

Accordingly, the CPU 14 sends the servo control unit 15 a servo control unit 15 to rotate the optical disc DK so that the music information Sp is output toward the recorder R at the transfer rate indicated by the rate control information Ssp. Outputs control signal Ssc. In parallel with this, the CPU 14 generates the control signal Sdc to control the decoding process in the decoding unit 13 and outputs the control signal Sdc to the decoding unit 13.

Then, the servo control unit 15 generates the spindle servo control signal Ssc for controlling the rotation speed of the optical disc DK in accordance with the transfer rate indicated by the rate control information Ssp, and sends the spindle servo control signal Ssc to the spindle motor 10. Output. Thus, the optical disc DK is rotated at a rotation speed corresponding to the transfer rate.

In parallel with this, based on the error signal Se, the servo control unit 15 adjusts the light condensing position of the light beam B to the position in the direction perpendicular to the information recording surface, not shown, on the optical disc DK. A pickup servo control signal Sep for controlling the position in the line direction is generated and output to the pickup 11.

The pickup 11 controls the position of the condensing position of the optical beam B in the direction perpendicular to the information recording surface (not shown) on the optical disc DK based on the pickup servo control signal Sep. The focus error servo control and the tracking servo control indicating the positional deviation of the focusing position in the direction parallel to the information recording surface of the recording track force are executed using corresponding actuators (not shown).

On the other hand, an operation for executing the operation as the player P in each of the above-described constituent members is performed by a user using the operation unit 16, and the operation unit 16 generates an operation signal Sop corresponding to the operation. And outputs it to the CPU 14. Then, the CPU 14 controls the components constituting the player P on the basis of the operation signal Sop. At this time, the operating state of the player P is displayed on a display 17 such as a liquid crystal display based on the display signal Sdp output from the CPU 14.

Next, a detailed configuration of the recorder R will be described with reference to FIG.

As shown in FIG. 3, the recorder R according to the embodiment includes a DSP (Digital Signal Processor) 1 including a compression processing unit 1A and a decompression processing unit 1B, a buffer memory 2 as a buffer unit, and a speed control unit. CPU 3 and an HDD (Hard Disk) as a recording means for storing HD, for example, as a non-volatile memory (not shown).

Disk Drive 4, volatile memory 5, D / A (Digital / Analog) converter 6, speaker 7, operation unit 8, and display 9. At this time, the buffer memory 2 stores the FIFO (First FIFO) output in the order of the input information.

It is a buffer memory of an In First Out (In First Out) system, for example, a configuration in which 16-bit volatile memories are connected in series in 128 stages.

In this configuration, the music information Sp obtained from the player P via the bus B is stored in a compression method (for example, MPEG (Moving)

The compression encoding is performed based on a compression method such as a Picture Experts Group method, and is output to the buffer memory 2 as compressed music information Spb.

[0037] Then, the buffer memory 2 sequentially stores the compressed music information Spb by the FIFO method, Output to CPU3 while maintaining the order of accumulation at the timing according to the request from CPU3. At this time, the buffer memory 2 outputs the storage amount information Sck indicating the total storage amount of the compressed music information Spb in the buffer memory 2 to the CPU 3 at a timing according to a request from the CPU 3.

[0038] Thereby, the CPU 3 outputs the compressed music information Spb as it is to the HDD 4, and stores the compressed music information Spb in the HD in the HDD 4 in accordance with a preset recording format. In addition, the CPU 3 checks the total storage amount in the buffer memory 2 based on the storage amount information Sck, and generates the rate control information Ssp for controlling the transfer rate of the music information Sp from the player P. Then, it outputs to the player P at the timing described later.

Next, when playing back the compressed music information Spb stored and stored in the HD, the CPU 3 first reads out the compressed music information Spb desired to be played from the HDD 4 and decompresses it in the DSP 1. Output to Part 1B.

[0040] Then, the decompression processing unit 1B decompresses the output compressed music information Spb by a decompression method (decoding method) corresponding to the compression method in the compression processing unit 1A, and generates DZA as the original music information Sp. Output to converter 6.

As a result, the DZA converter 6 analogizes the music information Sp and outputs the music information Sp to the speaker 7 as an output signal Sout, and the speaker 7 emits a sound based on the output signal Sout.

At this time, an operation for executing the operation as the recorder R in each of the above-described constituent members is executed by the user using the operation unit 8, and the operation unit 8 transmits an operation signal Sop corresponding to the operation. Is generated and output to CPU3. Then, the CPU 3 controls the components constituting the recorder R on the basis of the operation signal Sop. At this time, the operation state of the recorder R is displayed on a display 9 composed of, for example, a liquid crystal display, based on the display signal Sdp output from the CPU 3. In addition, various information necessary to execute the operation as the CPU 3 is output to the memory 5 as the memory information Sm and temporarily stored, and is read out again as necessary by the CPU 3 as the memory information Sm. The operation is performed.

Next, a recording operation according to the embodiment executed in the above-described information recording / reproducing system S will be specifically described with reference to FIGS. 1 to 4. In the recording operation according to the embodiment, first, when the optical disc DK is loaded in the player P, the recording in the HD in the recorder R is desired, and the reproduction of the music is started (step S1). Then, the bus B is transferred to the recorder R via the music information Sp corresponding to the reproduced music, and compression processing is performed in the compression processing section 1A (step S2). Then, based on the storage amount information Sck from the buffer memory 2, the storage amount of the compressed music information Spb in the buffer memory 2 is monitored (step S3), while the compressed music information Spb is stored in the buffer memory 2. The storage is performed (step S4).

Next, while the compressed music information Spb is being stored in the buffer memory 2, the storage amount of the compressed music information Spb in the buffer memory 2 is always determined (step S 5), and the storage amount will be described later. The above-mentioned rate control information Ssp for changing the generation speed of the music information Sp in the player P (that is, the music playback speed) is output to the player P in accordance with whether or not the force has reached each threshold value. To control the generation speed.

Then, it is confirmed whether or not the recording process has been completed for all the music to be recorded on the HD (step S7), and when the recording process has been completed (step S7; YES), If a series of recording processing is terminated as it is and there is music that has not been terminated (step S7; NO), the processing returns to step SI again and the processing described above for the next music to be recorded is performed. repeat.

Here, in parallel with the above-described generation speed control processing in step S6, the transfer processing of the compressed music information Spb previously stored in the buffer memory 2 to the HDD 4 via the CPU 3 and the transfer thereof A recording process for recording the compressed music information Spb on the HD in the HDD 4 is performed.

Further, the CPU 14 of the player P having received the rate control information Ssp reduces or increases the rotation speed of the spindle motor 10 according to the content of the rate control information Ssp, thereby decreasing the generation speed. Alternatively, the control to increase is executed every time the transfer rate indicated by the rate control information Ssp is changed.

Next, the determination criterion in step S5 will be described with specific examples. In the determination in step S5, the buffer memory 2 stores the 16-bit volatile data as described above. In the case where the spontaneous memories are configured to be connected in series in 128 stages and the compression ratio in the compression processing unit 1A is one-tenth, for example, from the first stage in the buffer memory 2 If the compressed music information Spb is stored in any of the volatile memories up to the 32nd stage, the generation speed of the music information Sp and the generation speed up to that point are determined by the rotation speed of the optical disk DK (hereinafter referred to as the rotation speed). The above-mentioned generation speed in the player P is adjusted so that the generation speed is changed to the generation speed equivalent to the 8 × speed (in other words, the reproduction speed is the same as the 8 × speed, and in that case, the speed remains unchanged) (step S6). On the other hand, when the compressed music information Spb is stored in any of the volatile memories in the 32nd to 63rd stages in the buffer memory 2, the generation speed of the music information Sp is 6 times faster than previous generation speed (In other words, if the far been reproduced at the sextuple speed as the speed unchanged) so as to change the production rate corresponding to adjust the production rate in the player P (Step S 6).

[0050] Further, if the compressed music information Spb is accumulated in any of the volatile memories from the 64th stage to the 95th stage in the buffer memory 2, the generation speed of the music information Sp is reduced. The above-mentioned generation speed in the player P is changed so that the generation speed is changed to the generation speed equivalent to the quadruple speed (in other words, the reproduction speed is changed up to the quadruple speed, and in that case, the speed remains unchanged). (Step S6), and if the compressed music information Spb is stored in any of the volatile memories at the 96th to 111st stages in the buffer memory 2, the music information Sp In order to change the generation speed to the generation speed equivalent to the previous generation speed of 2x speed (in other words, if it was played back at 2x speed and V ヽ, the generation speed was unchanged) Adjust the speed. Step S6).

Further, when the compressed music information Spb has been stored in any of the volatile memories of the 112nd and subsequent stages in the buffer memory 2, the generation speed of the music information Sp is increased. The above-mentioned generation speed in the player P is adjusted so that the generation speed is changed from the generation speed to the generation speed equivalent to 1 × speed (in other words, if the reproduction speed is unchanged at 1 × speed) (step S6). ).

As described above, according to the operation of the information recording / reproducing system S according to the embodiment, Since the generation speed of the music information Sp in the player P is controlled in accordance with the accumulation amount in the buffer memory 2, the recording process to HD without overflowing the buffer memory 2 can be completed efficiently and in a short time. Further, since it is not necessary to determine in advance the reproduction speed of the player P, the compression processing speed of the recorder R, and the reading speed of the recorder R from the buffer memory 2, the degree of freedom in designing the information recording / reproducing system S can be improved. Can be.

[0053] In particular, if the present invention is applied to a car navigation device having a function of recording the music information Sp on the HD, the CPU included in the car information processing unit can execute other processing and efficiently perform the music information Sp. Can be recorded in HD.

Further, since the generation speed is changed by changing the rotation speed of the optical disk DK, the generation speed can be changed with a simple configuration.

In the above-described embodiment, the generation speed is controlled by changing the rotation speed of the optical disc DK in the player P. In addition, the decoding speed in the decoding unit 13 in the player P is changed. By doing so, the above generation speed (in this case, the output speed of the music information Sp to the recorder scale) can be changed.

In this case, it is not necessary to change the number of rotations of the spindle motor 10 having many mechanical components, so that the life of the player P can be extended.

Further, in the above-described embodiment, the determination in step S5 shown in FIG. 4 is performed in a proportional function, but in addition to this, the first determination in the If the above-mentioned compressed music information Spb is stored in any of the volatile memories from the tiers to the 96th tier, the generation speed of the music information Sp is equivalent to eight times the generation speed up to then. (In other words, the playback speed is changed to 8x speed, in which case the speed is not changed), the above-described generation speed in the player P is adjusted (step S6). In the case where the compressed music information Spb is stored in any of the volatile memories after the 97th stage in 2, the generation speed of the music information Sp is equivalent to 1x speed at a stretch from the generation speed up to that point. Change the generation speed to As described above (in other words, if the playback speed is unchanged at 1 × speed), the above-mentioned generation speed in the player P may be adjusted (step S6). Further, in the above-described embodiment, the power described in the case where music recorded on the optical disc DK is recorded on the HD is applied. In addition, the present invention is applied to the case where the image recorded on the optical disc DK is recorded on the HD. It is also possible to apply.

[0059] Furthermore, the present invention can be applied to a case where information recorded in HD instead of the optical disc DK is recorded in another HD or optical disc.

[0060] Further, the present application can be similarly applied whether the information recorded on the HD or the like is digital information or analog information.

[0061] Furthermore, a program corresponding to the flowchart shown in Fig. 4 is recorded on an information recording medium such as a flexible disk or a hard disk, or obtained and recorded via a network such as the Internet. By reading and executing with a general-purpose computer, the computer can be used as the CPU 3 according to the embodiment.

Claims

The scope of the claims

[1] An information recording device that records information acquired from outside on a recording medium!

Buffer means for temporarily storing the obtained information;

Recording means for reading the stored information from the buffer means and recording the information on the recording medium;

Speed control means for controlling a speed of acquiring the information from the outside in accordance with an amount of the information stored in the buffer means;

An information recording device comprising:

[2] The information recording device according to claim 1!

The information has been reproduced and output from another recording medium by the external information reproducing apparatus, and

Wherein the speed control means controls the acquisition speed by outputting change information for changing an output speed of the information from the information reproducing apparatus to the information reproducing apparatus in accordance with the storage amount. Recording device.

[3] The information reproducing apparatus according to claim 2, wherein

Acquisition means for acquiring the change information;

Speed changing means for changing a reproduction speed of the information from the other recording medium based on the content of the obtained change information;

An information reproducing apparatus comprising:

[4] The information reproducing apparatus according to claim 3,

The other recording medium is an optical disk,

The information reproducing apparatus, wherein the speed changing means changes the reproducing speed by changing a rotation speed of the optical disc.

[5] The information reproducing apparatus according to claim 3,

The information reproducing apparatus, wherein the speed changing means changes the reproducing speed by changing a decoding speed when detecting and decoding the information from the other recording medium.

[6] Executed in an information recording device that records information acquired from outside on a recording medium In the information recording method,

A buffering step of temporarily storing the acquired information in a buffer unit; a recording step of reading the stored information from the buffer unit and recording the information on the recording medium;

A speed control step of controlling a speed of acquiring the information from the outside in accordance with an amount of the information stored in the buffer means;

An information recording method, comprising:

[7] An information reproducing method executed in an information reproducing apparatus for reproducing the information from another recording medium and outputting the information to the information recording apparatus according to claim 6, wherein

An acquisition step of acquiring the change information;

A speed changing step of changing a reproduction speed of the information from the other recording medium based on the content of the obtained change information;

An information reproducing method, comprising:

[8] External force A recording computer included in an information recording device that records the acquired information on a recording medium,

Buffer means for temporarily storing the acquired information,

Recording means for reading out the stored information from the buffer means and recording the information on the recording medium;

Speed control means for controlling an acquisition rate of the information from the outside in accordance with an accumulation amount of the information in the buffer means;

A recording control program characterized by functioning as:

[9] A reproduction computer included in the information reproducing apparatus that reproduces the information from another recording medium and outputs the information to the information recording apparatus according to claim 8.

Acquisition means for acquiring the change information,

A reproduction control program characterized by functioning as:

[10] The recording control program according to claim 8, which is readable by the recording computer. An information recording medium which is recorded and recorded on a medium.

[11] The information recording medium according to claim 9, which is recorded in a readable form on the reproduction computer.