JP2005339605A - Optical disk recording/reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk recording/reproducing apparatus which prevents the reduction of operation efficiency caused by an operation over specifications which occurs owing to a system state change. <P>SOLUTION: The optical disk recording/reproducing apparatus is provided with: a control means 101 for outputting a system state; a sample speed output means 103 for outputting first to N-th most suitable sample speeds by analyzing the system state change; and first to N-th processing means 102 operated at the first to N-th most suitable sample speeds. The sample speed output means 103 changes the first to N-th most suitable sample speeds in accordance with the system state change to prevent the operation over specifications, and thus a high speed and power saving are realized to improve the operation efficiency. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an optical disc recording / reproducing apparatus that requires high-speed recording and low power consumption.

FIG. 3 is a block diagram showing a configuration of a conventional optical disc recording / reproducing apparatus.
In FIG. 3, a control unit 301 and first to Nth (N is an integer equal to or greater than 1) processing units 302 are provided.

  The control means 301 outputs the first to Nth sample rates. The first to Nth processing means 302 operate at the first to Nth sample rates, respectively.

  Here, the sample period is Ts. When the sample rate is “v (v is a number equal to or greater than 0)”, the processing unit 302 is assumed to operate once per v * Ts. For example, when the sample rate is “2”, the processing unit 302 operates once every 2 Ts. When the sample speed is “1.5”, the processing means 302 is assumed to operate twice in 3Ts. However, when the sample rate is “0”, the processing unit 302 is not operated.

  The first to Nth sample rates output from the control means 301 are N different constant values. However, the control unit 301 can set any number of sample rates among the first to Nth sample rates to “0” in accordance with a change in the system state.

  The system state refers to, for example, a focus on state, a tracking on state, a recording state, a playback state, a seek state, and the like. A system state change refers to, for example, the system state being recorded. The state changes from the state to the state being played back.

Next, the operation of the conventional optical disc recording / reproducing apparatus configured as described above will be described.
FIG. 4 is a diagram showing the operation of a conventional optical disc recording / reproducing apparatus. Here, state 1 indicates the first system state, state 2 indicates the second system state, and processing 1 to processing 6 indicate the first to sixth processing means.

  In FIG. 4, 401 is the processing time per sample period of the second processing means in state 1, 402 is the processing time per sample period of the third processing means in state 1, and 403 is the state Is the maximum total processing time per sample period in 1, 404 is the processing time per sample period of the second processing means in state 2, and 405 is the per processing period of the third processing means in state 2. 406 is the maximum total processing time per sample period in state 2.

  FIG. 4 shows, as an example, the operations of the first to sixth processing means when the system state is changed from the state 1 to the state 2. In the state 1 and the state 2, the first sample rate is “1”. The second sample rate is “1”, the third sample rate is “1”, and the fourth sample rate is “2”. Also, the fifth sample rate is “2” in state 1 and “0” in state 2, and the sixth sample rate is “0” in state 1 and “2” in state 2.

  Also, the processing order in FIG. 4 is the order of processing order A in state 1, processing order B in state 1, processing order A in state 2, and processing order B in state 2.

In the state 1, the fourth processing unit and the fifth processing unit have the fourth and fifth sample speeds “2”, respectively, and execute the processing order A and the processing order B alternately at a low sample speed. Thus, the total processing time 403 per sample period in the state 1 can be reduced. Further, in the state 2, the total processing time 406 per sample period in the state 2 is extended by executing the sixth processing unit having the sample speed “2” instead of executing the fifth processing unit. The sixth processing means can be executed without any problem.
JP-A-9-167367

  However, in the conventional optical disc recording / reproducing apparatus described above, the first to Nth sample velocities output from the control means 301 are N different constant values, not different arbitrary values.

  For example, the optimum sample speed of the gain control process is high in the recording state and low in the track jump state. However, in the conventional optical disc recording / reproducing apparatus, the gain control processing sample speed is in the recording state, or It remains high and does not change in any system state during track jumping. As described above, since the optimum sample speed fluctuates according to the system state change, in the conventional optical disc recording / reproducing apparatus, the first to Nth sample speeds are N different constant values, so that the first Therefore, the N-th processing means has a problem that it becomes an overspec operation depending on a change in the system state.

  The present invention has been made in order to solve the above-described problems. By setting the first to Nth sample rates to N different arbitrary values, the overspec operation is prevented and the operation efficiency is improved. An object of the present invention is to provide an optical disc recording / reproducing apparatus that can be used.

  In order to solve the above problems, an optical disc recording / reproducing apparatus according to claim 1 of the present invention includes a control unit that outputs a system state, and first to Nth (N is an integer of 1 or more) by analyzing a system state change. ) And the first to N-th processing means operating at the first to N-th optimum sample speeds, respectively. To Nth optimum sample rate is changed according to the system state change.

  An optical disk recording / reproducing apparatus according to claim 2 of the present invention analyzes system state changes to optimally perform first to Nth (N is an integer equal to or greater than 1) optimum sample speeds and optimum execution of first to Nth processing means. A sample speed / execution order output means for outputting an order; and first to N-th processing means operating at the first to N-th optimum sample speeds, respectively. The first to Nth optimum sample rates and the optimum execution order of the first to Nth processing means are changed according to the system state change.

  An optical disk recording / reproducing apparatus according to a third aspect of the present invention is the optical disk recording / reproducing apparatus according to the second aspect, wherein the sample speed / execution order output means includes the first to Nth (N is an integer of 1 or more). An optimum sample speed designation table for designating an optimum sample speed; and an optimum execution order designation table for designating an optimum execution order of the first to N-th processing means. The specified value of the optimum execution order specifying table is changed according to the system state change.

  An optical disc recording / reproducing apparatus according to a fourth aspect of the present invention is the optical disc recording / reproducing apparatus according to any one of the second to third aspects, wherein the first to Nth (N is an integer of 1 or more) system states. And a control means for outputting an optimum sample speed and an optimum execution order of the first to N-th processing means, wherein the control means includes first to N-th optimum sample speeds and first to N-th processing means. The optimal execution order is directly specified.

  An optical disk recording / reproducing apparatus according to a fifth aspect of the present invention is the optical disk recording / reproducing apparatus according to any one of the first to fourth aspects, wherein the control means includes the first to Nth (N is 1 or more). When there is a period in which all of the processing means of (integer) need not operate within a single sample period, the clock supply to the first to Nth processing means is stopped during the period. is there.

  An optical disk recording / reproducing apparatus according to a sixth aspect of the present invention is the optical disk recording / reproducing apparatus according to any one of the first to fifth aspects, wherein the first to Nth (N is an integer of 1 or more) processing means. Has first to Nth parameter groups, and changes the set values of the first to Nth parameter groups in conjunction with the change of the first to Nth optimum sample rates, respectively. To do.

  As described above, according to the optical disc recording / reproducing apparatus of the first aspect of the present invention, the control means for outputting the system state and the first to Nth (N is an integer of 1 or more) by analyzing the system state change. Sample rate output means for outputting the optimum sample rate, and first to N-th processing means operating at the first to N-th optimum sample rates, respectively. By changing the Nth optimum sample rate according to the change in the system state, it is possible to prevent the overspec operation, increase the speed and save power, and improve the operation efficiency.

  According to the optical disk recording / reproducing apparatus of the second aspect of the present invention, the first to Nth optimum sample rates (N is an integer of 1 or more) and the first to Nth processes are analyzed by analyzing the system state change. A sample speed / execution order output means for outputting an optimum execution order of the means; and first to Nth processing means operating at the first to Nth optimum sample speeds, respectively, and the sample speed / execution order output. The means changes the optimum execution order of the first to N-th optimum sample rates and the first to N-th processing means according to the change in the system state, thereby preventing an overspec operation and improving the operation efficiency. And the maximum total processing time per sample period can be reduced.

  According to an optical disk recording / reproducing apparatus of a third aspect of the present invention, in the optical disk recording / reproducing apparatus according to the second aspect, the sample speed / execution order output means includes the first to Nth (N is 1 or more). An optimum sample speed designating table for designating an optimum execution order of the first to Nth processing means, and an optimum execution order designating table for designating the optimum execution order of the first to Nth processing means. Managing information for preventing overspec operation and reducing the maximum total processing time per sample period by changing the designated value and the designated value in the optimum execution order designation table according to the system state change Can do.

  According to an optical disk recording / reproducing apparatus of a fourth aspect of the present invention, in the optical disk recording / reproducing apparatus according to any one of the second to third aspects, the system state, first to Nth (N is 1 or more) And an optimal execution order of the first to N-th processing means, the control means including the first to N-th optimal sample speeds and the first to N-th optimal sampling speeds. By directly specifying the optimum execution order of the processing means, information for preventing overspec operation and reducing the maximum total processing time per sample period can be manually specified.

  According to an optical disk recording / reproducing apparatus according to a fifth aspect of the present invention, in the optical disk recording / reproducing apparatus according to any one of the first to fourth aspects, the control means includes the first to Nth (N In the case where there is a period during which all the processing means do not require operation within a single sample period, the clock supply to the first to Nth processing means is stopped during the period, System power consumption can be reduced.

  According to an optical disk recording / reproducing apparatus of a sixth aspect of the present invention, in the optical disk recording / reproducing apparatus according to any one of the first to fifth aspects, the first to Nth (N is an integer of 1 or more) ) Has first to Nth parameter groups, and changes the set values of the first to Nth parameter groups in conjunction with the change of the first to Nth optimum sample rates, respectively. Thus, even when the first to Nth optimum sample rates are changed, the first to Nth time-dependent parameters can always be set correctly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
An optical disc recording / reproducing apparatus according to Embodiment 1 corresponding to claim 1 of the present invention will be described below with reference to FIGS.
FIG. 1 is a block diagram showing a configuration of an optical disc recording / reproducing apparatus according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the optical disc recording / reproducing apparatus according to the first embodiment includes a control unit 101, first to Nth (N is an integer equal to or greater than 1) processing units 102, a sample speed output unit 103, Is provided.

The control unit 101 outputs the system state to the sample speed output unit 103.
The sample rate output means 103 analyzes the system state change and outputs the first to Nth optimum sample rates to the first to Nth processing means 102, respectively.

  The first to Nth processing means 102 operate at the first to Nth optimum sample rates, respectively.

  Here, the sample period is Ts. When the sample rate is “v (v is a number equal to or greater than 0)”, the processing means is assumed to operate once per v * Ts. For example, when the sample speed is “2”, the processing means is assumed to operate once every 2 Ts. When the sample rate is “1.5”, the processing means is operated twice in 3Ts. However, when the sample rate is “0”, the processing means does not operate.

  The first to Nth optimum sample rates output from the sample rate output means 103 are N different arbitrary values.

  The system state refers to, for example, a focus on state, a tracking on state, a recording state, a playback state, a seek state, and the like. A system state change refers to, for example, the system state being recorded. The state changes from the state to the state being played back.

  The sample speed output means 103 and the first to Nth processing means 102 can be realized by software, for example, but can also be realized by hardware.

Next, the operation of the optical disc recording / reproducing apparatus according to Embodiment 1 of the present invention will be described.
FIG. 2 is a diagram showing the operation of the optical disc recording / reproducing apparatus according to Embodiment 1 of the present invention. Here, state 1 indicates the first system state, state 2 indicates the second system state, and processing 1 to processing 6 indicate the first to sixth processing means.

  In FIG. 2, 201 is the processing time per sample period of the second processing means in state 1, 202 is the processing time per sample period of the third processing means in state 1, and 203 is the sample in state 1 The maximum total processing time per cycle, 204 is the processing time per sample cycle of the second processing means in state 2, 205 is the processing time per sample period of the third processing means in state 2, 206 is the maximum total processing time per sample period in state 2.

  As an example, FIG. 2 shows the operation of the first to sixth processing means when the system state changes from state 1 to state 2, and the first optimum sample rate in state 1 is “1”. The second optimal sample rate in state 1 is “1”, the third optimal sample rate in state 1 is “1”, the fourth optimal sample rate in state 1 is “2”, and state 1 The fifth optimum sample rate in state 2 is “2”, the sixth optimum sample rate in state 1 is “0”, the first optimum sample rate in state 2 is “1”, and the second optimum sample rate in state 2 The optimal sample rate of 2 is “2”, the third optimal sample rate in state 2 is “2”, the fourth optimal sample rate in state 2 is “2”, and the fifth optimal sample rate in state 2 The optimal sample speed is A ", the optimal sample rate of the 6 in the state 2 is" 2 ". Further, the processing order in FIG. 2 is the order of processing order A in state 1, processing order B in state 1, processing order A in state 2, and processing order B in state 2.

  When the system state changes from state 1 to state 2, the sample rate output means 103 may analyze the system state input from the control means 101 and decrease the second sample rate and the third sample rate. The second processing means and the third processing means change the sample rate from “1”, which is the second and third optimum sample rates in the state 1, respectively, to the second and third in the state 2. Thus, the total processing time 206 per sample period in the state 2 can be reduced by executing the processing order A and the processing order B alternately.

  Here, the change of the system state from the state 1 to the state 2 means, for example, a change from a state during recording on the optical disc to a track jump state. Further, decreasing the sample speed means, for example, executing the gain control process such as a focus error signal at a lower sample speed.

  As described above, according to the first embodiment of the present invention, the control unit 101 that outputs the system state, the first to Nth processing units 102 that operate at the first to Nth optimum sample rates, respectively, Sample rate output means 103 for analyzing a change in system state and outputting the first to N-th optimum sample rates, wherein the sample rate output means 103 provides the first to N-th optimum sample rates to the system. By changing according to the state change, it is possible to prevent the overspec operation and improve the operation efficiency.

(Embodiment 2)
Hereinafter, an optical disc recording / reproducing apparatus according to Embodiment 2 corresponding to claims 2 to 4 of the present invention will be described with reference to FIGS.

FIG. 5 is a block diagram showing a configuration of an optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention.
As shown in FIG. 5, the optical disc recording / reproducing apparatus according to the second embodiment includes a control means 501, first to Nth processing means 502 (N is an integer equal to or greater than 1), sample speed / execution order output means. 503.

  The control unit 501 outputs the system state, the sample rate, and the optimum execution order to the sample rate / execution order output unit 503.

  The sample speed / execution order output means 503 analyzes the change in the system state to determine the first to Nth optimum sample speed and the optimum execution order of the first to Nth processing means, respectively. Output to.

  The first to Nth processing means 502 operate at the first to Nth optimum sample rates and the optimum execution order of the first to Nth processing means, respectively.

  Here, the sample period is Ts. When the sample rate is “v (v is a number equal to or greater than 0)”, the processing means is assumed to operate once per v * Ts. For example, when the sample speed is “2”, the processing means is assumed to operate once every 2 Ts. When the sample rate is “1.5”, the processing means is operated twice in 3Ts. However, when the sample rate is “0”, the processing means does not operate.

  The first to Nth optimum sample rates output by the sample rate / execution order output means 503 are N different arbitrary values.

  The system state refers to, for example, a focus on state, a tracking on state, a recording state, a playback state, a seek state, and the like. A system state change refers to, for example, the system state being recorded. The state changes from the state to the state being played back.

  The sample speed / execution order output means 503 and the first to Nth processing means 502 can be realized by software, for example, but can also be realized by hardware.

Next, the operation of the optical disc recording / reproducing apparatus according to the second embodiment of the present invention will be described.
FIG. 6 is a diagram showing the operation of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention. Here, states 1 to 3 indicate first to third system states, and processing 1 to processing 6 indicate first to sixth processing means.

  In FIG. 6, 601 is the processing time per sample period of the second processing means in state 1, 602 is the processing time per sample period of the third processing means in state 1, and 603 is the sample in state 1 The maximum total processing time per period, 604 is the processing time per sample period of the second processing means in state 2, 605 is the processing time per sample period of the third processing means in state 2, 606 is the maximum total processing time per sample period in state 2, 607 is the processing time per sample period of the third processing means in state 3, and 608 is per sample period of the second processing means in state 3. 609 is the maximum total processing time per sample period in state 3.

  As an example, FIG. 6 shows the operation of the first to sixth processing means when the system state changes from state 1 to state 2 and then changes to state 3, and the first optimum sample rate in state 1 is “1”, the second optimal sample rate in state 1 is “1”, the third optimal sample rate in state 1 is “1”, and the fourth optimal sample rate in state 1 is “2”. , The fifth optimal sample rate in state 1 is “2”, the sixth optimal sample rate in state 1 is “0”, and the first optimal sample rate in states 2 and 3 is “ 1 ”, the second optimal sample rate in states 2 and 3 is“ 2 ”, the third optimal sample rate in states 2 and 3 is“ 2 ”, and the second optimal sample rate in states 2 and 3 is 4 optimal sample speed Is "2", the fifth optimum sample rate in the state 2 and state 3 is "0", the sixth optimum sample rate in the state 2 and state 3 is "2".

  Also, the processing order in FIG. 6 is processing order A in state 1, processing order B in state 1, processing order A in state 2, processing order B in state 2, processing order A in state 3, and processing order B in state 3. , In that order.

FIG. 7 is an optimum sample speed designation table in state 1 of the optical disk recording / reproducing apparatus according to the second embodiment of the present invention.
In FIG. 7, as an example, the optimum sample rate designation table 701 in the state 1 designates six optimum sample rates corresponding to the first to sixth processing means.

FIG. 8 is an optimum execution order designation table in state 1 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention.
In FIG. 8, as an example, the optimum execution order designation table 801 in the state 1 includes the optimum execution order of the first to sixth processing means in the processing order A and the optimum of the first to sixth processing means in the processing order B. The execution order is specified.

FIG. 9 is an optimum sample rate designation table in state 2 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention.
In FIG. 9, as an example, the optimum sample rate designation table 901 in the state 2 designates six optimum sample rates corresponding to the first to sixth processing means.

FIG. 10 is an optimal execution order designation table in state 2 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention.
In FIG. 10, as an example, the optimal execution order specification table 1001 in the state 2 includes the optimal execution order of the first to sixth processing means in the processing order A and the optimal execution order of the first to sixth processing means in the processing order B. The execution order is specified. However, when "-" is designated, all of the first to sixth processing means do not need to operate.

FIG. 11 is an optimum sample rate designation table in state 3 of the optical disc recording / reproducing apparatus according to the second embodiment of the present invention.
In FIG. 11, as an example, the optimum sample rate designation table 1101 in the state 3 designates six optimum sample rates corresponding to the first to sixth processing means.

FIG. 12 is an optimum execution order designation table in state 3 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention.
In FIG. 12, as an example, the optimum execution order specification table 1201 in the state 3 includes the optimum execution order of the first to sixth processing means in the processing order A and the optimum of the first to sixth processing means in the processing order B. The execution order is specified. However, when “-” is designated, it is assumed that all of the first to sixth processing means do not require operation.

  When the system state is state 1, the sample rate / execution order output unit 503 analyzes the system state and sets the six optimum sample rates corresponding to each of the first to sixth processing units to the optimum in the state 1 This is designated in the sample speed designation table 701. The sample speed / execution order output means 503 analyzes the system state, and the optimal execution order of the first to sixth processing means in the processing order A and the first to sixth processing means in the processing order B. The optimum execution order is designated in the optimum execution order designation table 801 in the state 1.

  When the system state changes from state 1 to state 2, the sample rate / execution order output means 503 analyzes the system state and determines that the second sample rate and the third sample rate may be reduced. The optimum sample rate of the second processing unit and the optimum sample rate of the third processing unit are changed from “1” to “2”, respectively, and designated in the optimum sample rate designation table 901 in the state 2. The sample speed / execution order output means 503 analyzes the system state, and the optimal execution order of the first to sixth processing means in the processing order A and the first to sixth processing means in the processing order B. The optimum execution order is designated in the optimum execution order designation table 1001 in the state 2. Here, the change of the system state from the state 1 to the state 2 means, for example, a change from a state during recording on the optical disk to a state of track jump. Further, decreasing the sample speed means, for example, executing the gain control process such as a focus error signal at a lower sample speed.

  When the system state changes from the state 2 to the state 3, the sample rate / execution order output unit 503 analyzes the system state and determines that the first to sixth sample rates need not be changed. The designated value in the optimum sample rate designation table 1101 is not changed to a value different from the designated value in the optimum sample rate designation table 901 in the state 2. The sample speed / execution order output means 503 analyzes the system state, and the execution order of the second processing means and the third processing means can be changed. In the state 2, the second processing means is executed in the processing order A and the third processing means is executed in the processing order B in the state 3. Then, the optimal execution order of the first to sixth processing means in the processing order A and the processing order B so that the third processing means is executed in the processing order A and the second executing means is executed in the processing order B. By specifying the optimum execution order of the first to sixth processing means in the optimum execution order designation table 1201 in the state 3, the maximum total processing time 609 per sample period in the state 3 can be shortened. .

  Here, it is assumed that all of the first to N-th processing means are timer interrupt processes that start at regular intervals, and the period other than the maximum total processing time 609 per sample period in the state 3 in the sample period is Assuming that processing other than the timer interrupt processing is operating, the processing time other than the timer interrupt processing is increased within the sample cycle by reducing the maximum total processing time 609 per sample cycle in the state 3. Can be secured.

  Further, the control unit 501 outputs the sample rate and the execution order to the sample rate / execution order output unit 503 so that the first to sixth optimum sample rates and the optimum execution order of the first to sixth processing units are set. Direct specification is possible. Further, the control unit 501 can directly specify the specified value of the optimum sample rate designation table and the designated value of the optimum execution order designation table to the sample rate and execution order output unit 503.

  As described above, according to the optical disc recording / reproducing apparatus according to the second embodiment of the present invention, the control unit 501 for outputting the system state, the optimum sample rate, and the optimum execution order, and the first to Nth optimum sample rates, respectively. First to N-th processing means 502 that operates, and a sample speed / execution order for analyzing system state changes and outputting first to N-th optimum sample speeds and optimum execution order for the first to N-th processing means Output means 503, wherein the sample rate / execution order output means 503 determines the first to N-th optimum sample rates and the optimum execution order of the first to N-th processing means according to a change in system state. By changing, it is possible to prevent over-spec operation and improve operation efficiency, and shorten the maximum total processing time per sample period. There is an effect that kill.

(Embodiment 3)
An optical disk recording / reproducing apparatus according to Embodiment 3 corresponding to claim 5 of the present invention will be described below with reference to FIGS.
FIG. 13 is a block diagram showing a configuration of an optical disc recording / reproducing apparatus according to Embodiment 3 of the present invention.

As shown in FIG. 13, the optical disc recording / reproducing apparatus according to the third embodiment includes control means 1301, first to Nth processing means 1302 (N is an integer of 1 or more), sample speed / execution order output means. 1303, and a switch 1304 that turns on and off the operation clock supply from the control unit 1301 to the first to Nth processing units 1302.
The control unit 1301 outputs the system state to the sample rate / execution order output unit 1303.

  The sample speed / execution order output means 1303 analyzes system state changes to determine the first to Nth optimum sample speeds and the optimum execution order of the first to Nth processing means, from the first to Nth processing means 1302. And the optimal execution order of the first to Nth processing means is output to the control means 1301.

  The first to N-th processing means 1302 operate at the first to N-th optimum sample rates and the optimum execution order of the first to N-th processing means.

  The control unit 1301 turns on and off the switch 1304 according to the optimum execution order.

  Here, the sample period is Ts. When the sample rate is “v (v is a number equal to or greater than 0)”, the processing means is assumed to operate once per v * Ts. For example, when the sample speed is “2”, the processing means is assumed to operate once every 2 Ts. When the sample rate is “1.5”, the processing means is operated twice in 3Ts. However, when the sample rate is “0”, the processing means does not operate.

  The first to Nth optimum sample rates output by the sample rate / execution order output unit 1303 are N different arbitrary values.

  The system state refers to, for example, a focus on state, a tracking on state, a recording state, a playback state, a seek state, and the like. A system state change refers to, for example, the system state being recorded. The state changes from the state to the state being played back.

The sample speed / execution order output means 1303 and the first to Nth processing means 1302 can be realized by software, for example, but can also be realized by hardware.

Next, the operation of the optical disc recording / reproducing apparatus according to Embodiment 3 of the present invention will be described.
FIG. 14 is a diagram showing the operation of the optical disc recording / reproducing apparatus according to Embodiment 3 of the present invention. Here, state 1 indicates the first system state, state 2 indicates the second system state, and processing 1 to processing 6 indicate the first to sixth processing means.

  In FIG. 14, reference numeral 1401 denotes the processing time per sample period of the second processing means in the processing order A of state 2, and 1402 indicates that all of the first to Nth processing means in the processing order B of state 2 need not operate. It is a period.

  As an example, FIG. 14 shows the operation of the first to third processing means when the system state changes from state 1 to state 2, and the first optimum sample rate in state 1 is “1”. The second optimal sample rate in state 1 is “1”, the third optimal sample rate in state 1 is “1”, the first optimal sample rate in state 2 is “1”, and state 2 The second optimal sample rate at is “2”, and the third optimal sample rate at state 2 is “1”.

  Further, the processing order in FIG. 14 is the order of processing order A in state 1, processing order B in state 1, processing order A in state 2, and processing order B in state 2.

  When the system state changes from state 1 to state 2, the sample rate / execution order output unit 1303 analyzes the system state and determines that the second sample rate may be reduced. The sample rate is reduced from “1” to “2”, and a period 1402 in which all of the first to N-th processing units 1302 do not require operation in the processing order B of state 2 is provided. System consumption is reduced by turning off the switch 1304 only during a period 1402 during which all of the first to N-th processing units 1302 require no operation, and stopping the clock supply to the first to N-th processing units 1302. Power can be reduced. Here, the change of the system state from the state 1 to the state 2 means, for example, a change from a state during recording on the optical disk to a state of track jump. Further, reducing the sample speed means, for example, executing the gain control process such as a focus error signal at a reduced sample speed.

  Also, in the processing order B of state 2, the processing of the third processing means is started immediately after the end of the processing of the first processing means, so that all of the first to N-th processing means do not require operation. This period 1402 can also be provided after the processing of the third processing means is completed.

  As described above, according to the optical disc recording / reproducing apparatus according to the third embodiment of the present invention, the control unit 1301 that outputs the system state, the optimum sample rate, and the optimum execution unit, and the first to Nth optimum sample rates, respectively. First to N-th processing means 1302 that operate, and a sample speed and execution order for analyzing system state changes and outputting first to N-th optimal sample speeds and optimal execution order of the first to N-th processing means Output means 1303, and a switch 1304 for turning on and off the operation clock supply from the control means 1301 to the first to N-th processing means 1302, and the control means 1301 includes the first to N-th processing means. When there is a period 1402 in which all of 1302 do not require operation within a single sample period, all of the first to Nth processing means 1302 By stopping the clock supply only during the period 1402 to the operation required from the first to the processing means of the N, there is an effect that it is possible to suppress the power consumption of the system.

(Embodiment 4)
An optical disk recording / reproducing apparatus according to Embodiment 4 corresponding to claim 6 of the present invention will be described below with reference to FIG.
FIG. 15 is a diagram showing first to Nth parameter groups (N is an integer equal to or greater than 1) in the optical disc recording / reproducing apparatus according to Embodiment 4 of the present invention.

  In FIG. 15, a first parameter group 1504 included in the first processing unit 1501 is a group of parameters whose values change depending on the first optimum sample rate among the parameters used by the first processing unit 1501. .

  The second parameter group 1505 included in the second processing unit 1502 is a group of parameters whose values change depending on the second optimum sample rate among the parameters used by the second processing unit 1502.

  The N-th parameter group 1506 provided in the N-th processing unit 1503 is a group of parameters whose values change depending on the N-th optimum sample rate among the parameters used by the N-th processing unit 1503.

Next, the operation of the optical disc recording / reproducing apparatus according to Embodiment 4 of the present invention will be described.
In FIG. 15, the first processing unit 1501 changes all parameter values included in the first parameter group 1504 in conjunction with the change of the first optimum sample rate, and the second processing unit 1502 All the parameter values included in the second parameter group 1505 are changed in conjunction with the change in the second optimum sample rate, and the Nth processing means 1503 is in conjunction with the change in the Nth optimum sample rate. By changing all parameter values of the Nth parameter group 1506, the first to Nth time-dependent parameters are always set correctly even when the first to Nth optimum sample rates are changed. be able to.

  Here, an example in which the time-dependent parameter must always be set correctly even when the optimum sample rate is changed will be described. For example, it is assumed that when the system state changes from a state during recording on an optical disk to a state of track jump, the sample rate of gain control processing such as a focus error signal is reduced. At this time, if it is desired to execute the gain control process without changing the cutoff frequency of the low-pass filter during the gain control process, it is necessary to change the coefficient of the low-pass filter. In this way, when the optimal sample speed is changed from a high speed to a low speed, the optimal sample speed remains low even when the optimal sample speed is low by changing the parameters in conjunction with the change of the optimal sample speed. The same operation as when the value is high can be performed.

  As described above, according to the optical disc recording / reproducing apparatus according to Embodiment 4 of the present invention, the first, second, and Nth processing means 1501, 1502, and 1503 are the first, second, and Nth parameters. Groups 1504, 1505, and 1506, and the first, second, and Nth processing means 1501, 1502, and 1503 are linked to the change in the first, second, and Nth optimum sample speeds. By changing the parameter values of the second, Nth parameter groups 1504, 1505, 1506, the first, second, Nth optimum sample rates can be changed even when the first, second, Nth optimum sample rates are changed. This has the effect that the time-dependent parameter can always be set correctly.

  The optical disc recording / reproducing apparatus according to the present invention analyzes the system state change and outputs first to Nth (N is an integer equal to or greater than 1) optimum sample rates, and sample speed output means, respectively, The first to Nth processing means operating at the optimum sample speed are useful for optical disc recording / reproducing apparatuses that require high-speed recording and low power consumption.

1 is a block diagram showing the configuration of an optical disc recording / reproducing apparatus according to Embodiment 1 of the present invention. The figure which shows operation | movement of the optical disk recording / reproducing apparatus by Embodiment 1 of this invention. The block diagram which shows the structure of the conventional optical disk recording / reproducing apparatus The figure which shows operation | movement of the conventional optical disk recording / reproducing apparatus. FIG. 3 is a block diagram showing the configuration of an optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention. The figure which shows operation | movement of the optical disk recording / reproducing apparatus by Embodiment 2 of this invention. Optimal sample rate designation table in state 1 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention Optimal execution order designation table in state 1 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention Optimal sample rate designation table in state 2 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention Optimal execution order designation table in state 2 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention Optimal sample rate designation table in state 3 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention Optimal execution order designation table in state 3 of the optical disc recording / reproducing apparatus according to Embodiment 2 of the present invention Block diagram showing the configuration of an optical disc recording / reproducing apparatus according to Embodiment 3 of the present invention. The figure which shows operation | movement of the optical disk recording / reproducing apparatus by Embodiment 3 of this invention. The figure which shows the 1st-Nth parameter group in the optical disk recording / reproducing apparatus by Embodiment 4 of this invention.

Explanation of symbols

101, 301, 501, 1301 Control means 102, 302, 502, 1302 First to Nth processing means 103 Sample speed output means 503, 1303 Sample speed / execution order output means 701 Optimal sample speed designation table 801 in state 1 State Optimal execution order designation table 901 in state 1 Optimal sample speed designation table 1001 in state 2 Optimal execution order designation table 1101 in state 2 Optimal sample speed designation table 1201 in state 3 Optimal execution order designation table 1304 in state 3 Switch 1504 First parameter Group 1505 Second parameter group 1506 Nth parameter group

Claims (6)

Control means for outputting the system status;
Sample rate output means for analyzing system state changes and outputting first to Nth (N is an integer greater than or equal to 1) optimum sample rates;
First to Nth processing means respectively operating at the first to Nth optimum sample rates,
The sample speed output means includes
Each of the first to Nth optimal sample rates is changed in response to the system state change;
An optical disc recording / reproducing apparatus. A sample speed / execution order output means for analyzing a system state change and outputting first to N-th (N is an integer equal to or greater than 1) optimum sample speed and first to N-th optimum execution order;
First to Nth processing means respectively operating at the first to Nth optimum sample rates,
The sample speed / execution order output means includes:
Changing the first to N-th optimum sample rates and the optimum execution order of the first to N-th processing means according to the system state change;
An optical disc recording / reproducing apparatus. The optical disk recording / reproducing apparatus according to claim 2.
The sample speed / execution order output means includes:
An optimum sample rate designation table for designating the first to N-th optimum sample rates (N is an integer equal to or greater than 1), and an optimum execution order designation table for designating the optimum execution sequence of the first to N-th processing means; Have
Changing the designated value of the optimum sample speed designation table and the designated value of the optimum execution order designation table according to the system state change;
An optical disc recording / reproducing apparatus. In the optical disc recording / reproducing apparatus according to any one of claims 2 to 3,
Control means for outputting a system state, first to Nth (N is an integer equal to or greater than 1) optimum sample rate, and optimum execution order of the first to Nth processing means;
The control means includes
Directly specifying the first to Nth optimal sample rates and the optimal execution order of the first to Nth processing means;
An optical disc recording / reproducing apparatus. In the optical disc recording / reproducing apparatus according to any one of claims 1 to 4,
The control means includes
When there is a period in which all of the first to Nth processing means (N is an integer equal to or greater than 1) do not require operation within a single sample period, the first to Nth processing means are transferred during the period. Stop the clock supply,
An optical disc recording / reproducing apparatus. In the optical disc recording / reproducing apparatus according to any one of claims 1 to 5,
The first to Nth processing means (N is an integer of 1 or more) are:
Having first to Nth parameter groups,
The setting values of the first to Nth parameter groups are changed in conjunction with the change of the first to Nth optimum sample rates, respectively.
An optical disc recording / reproducing apparatus characterized by the above.

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