1. An apparatus for reproducing audio data recorded in an optical recording medium, the apparatus comprising:
an optical pickup that reads out the audio data from the optical recording medium;
a storage unit that accumulates at least one of a plurality of first digital audio signals obtained by performing a demodulation process on the audio data read-out;
a reproduction processor that executes a reproduction process with respect to the audio data, the reproduction process including performing the demodulation process on the audio data, generating a second digital audio signal, which is to be stored in the storage unit, from the audio data at a speed faster than a speed at which the first digital audio signal is outputted from the storage unit, and outputting the first digital audio signal from the storage unit;
a system controller that
causes the reproduction processor, when receiving a reproduction instruction, to execute an initial setup process and then starts the reproduction process,
causes the reproduction processor, when a predetermined amount of the first digital audio signals is accumulated in the storage unit, to suspend generation of the second digital audio signal and execute an automatic adjustment process,
releases suspending the generation of the second digital audio signal when the automatic adjustment process is finished, and
causes the reproduction processor to resume the reproduction process; and
a reproducing unit that reproduces audio data based on the first digital audio signal.
2. The apparatus according to claim 1, wherein
the system controller includes
an adjustment-value storage unit that stores adjustment values acquired when the reproduction processor executes the automatic adjustment process;
a monitoring unit that monitors an accumulation amount of the first digital audio signals stored in the storage unit; and
a setup processor that causes the reproduction processor to execute the initial setup process, the reproduction process, and the automatic adjustment process,
when the reproduction process is to be executed after the initial setup process is finished, the setup processor causes the reproduction processor to execute the reproduction process using the adjustment values stored in the adjustment value storage unit, and
when the generation of the second digital audio signal for the reproduction process is to be resumed after the automatic adjustment process is finished, the setup processor causes the reproduction processor to execute the reproduction process using adjustment values acquired through the automatic adjustment process.
3. The apparatus according to claim 1, wherein the automatic adjustment process includes a process of adjusting a servo control signal for controlling a position of an objective lens of the optical pickup.
4. The apparatus according to claim 1, wherein the automatic adjustment process includes a process of adjusting a signal of the audio data read-out by the optical pickup.
5. The apparatus according to claim 1, wherein the automatic adjustment process includes
a first process of adjusting a servo control signal for controlling a position of an objective lens of the optical pickup; and
a second process of adjusting a signal of the audio data read-out by the optical pickup.
6. The apparatus according to claim 3, wherein the process includes at least one of focus offset adjustment, focus balance adjustment, focus automatic gain control adjustment, focus bias adjustment, focus gain-up, tracking offset adjustment, tracking balance adjustment, tracking automatic gain adjustment, and tracking gain-up.
7. The apparatus according to claim 4, wherein the process includes at least one of radio frequency offset adjustment, radio frequency automatic gain adjustment, and radio frequency gain-up adjustment.
8. The apparatus according to claim 5, wherein
the first process includes at least one of focus offset adjustment, focus balance adjustment, focus automatic gain control adjustment, focus bias adjustment, focus gain-up, tracking offset adjustment, tracking balance adjustment, tracking automatic gain adjustment, and tracking gain-up, and
the second process includes at least one of radio frequency offset adjustment, radio frequency automatic gain adjustment, and radio frequency gain-up adjustment.
9. A setup method for an apparatus for reproducing audio data recorded in an optical recording medium, the apparatus including an optical pick up that reads out audio data from an optical recording medium using a laser beam, a storage unit that accumulates at least one of a plurality of first digital audio signals obtained by performing a demodulation process on the audio data read-out, the setup method including executing a reproduction operation that includes performing the demodulation process on the audio data, generating a second digital audio signal, which is to be stored in the storing unit, from the audio data at a speed faster than a speed at which the first digital audio signal is outputted from the storage unit, and outputting the first digital audio signal from the storage unit, the setup method comprising:
executing an initial setup process when a reproduction instruction is received;
executing the reproduction operation after the initial setup process is finished;
suspending the generating the second digital audio signal when a predetermined amount of the first digital audio signals is accumulated in the storage unit, and executing an automatic adjustment process for components of the optical-recording-medium reproducing apparatus; and
releasing the suspending when the automatic adjustment process is finished, and resuming the reproduction process.
10. A computer-readable recoding medium that stores therein a computer program for setting up an apparatus that includes an optical pick up that reads out audio data from an optical recording medium using a laser beam, a storage unit that accumulates at least one of a plurality of first digital audio signals obtained by performing a demodulation process on the audio data read-out, the computer program for executing reproduction operation that includes performing the demodulation process on the audio data, generating a second digital audio signal, which is to be stored in the storing unit, from the audio data at a speed faster than a speed at which the first digital audio signal is outputted from the storage unit, and outputting the first digital audio signal from the storage unit, wherein the computer program causes a computer to execute:
executing an initial setup process when a reproduction instruction is received;
executing the reproduction operation after the initial setup process is finished;
suspending the generating the second digital audio signal when a predetermined amount of the first digital audio signals is accumulated in the storage unit, and executing an automatic adjustment process for components of the optical-recording-medium reproducing apparatus; and
releasing the suspending when the automatic adjustment process is finished, and resuming the reproduction process.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A fluid comprising a hydraulic cement and an invert emulsion of an oleaginous fluid, a nonoleaginous fluid, and an emulsifying surfactant, wherein the emulsifying surfactant:
has an LC50 or EC50 that is greater than about 10 milligramsliter with respect to Skeletonema costatum, Acartia tonsa, Scopthalmus maximus (juvenile), or Corophium volutator; and
demonstrates a biodegradability of:
greater than about 70% biodegradation in 28 days when tested according to method OECD 301A or 301E; or
greater than about 60% biodegradation in 28 days when tested according to method OECD 301B, 301C, 301F, or 306.
2. The fluid of claim 1 wherein the invert emulsion is present in the fluid in an amount in the range of from about 20% to about 60% by weight.
3. The fluid of claim 1 having a density in the range of from about 11 to about 17 pounds per gallon.
4. The fluid of claim 1 wherein the oleaginous fluid comprises a mixture of long chain hydrocarbons.
5. The fluid of claim 1 wherein the oleaginous fluid:
demonstrates greater than about 60% biodegradation in 28 days when tested according to method OECD 306; and
has an LC50 that is greater than about 10 milligrams per kilogram of dry sediment with respect to Corophium volutator.
6. The fluid of claim 1 wherein the oleaginous fluid comprises a blend of C10-C18 normal alkanes.
7. The fluid of claim 1 wherein the oleaginous fluid is present in the fluid in an amount in the range of from about 40% to about 70% by volume of the invert emulsion.
8. The fluid of claim 1 wherein the nonoleaginous fluid comprises water.
9. The fluid of claim 8 wherein the water is present in an amount in the range of from about 30% to about 60% by volume of the invert emulsion.
10. The fluid of claim 1 wherein the emulsifying surfactant comprises an ether carboxylic acid.
11. The fluid of claim 1 wherein the emulsifying surfactant is present in the fluid in an amount in the range of from about 1% to about 5% by weight of the oleaginous fluid.
12. The fluid of claim 1 wherein the hydraulic cement is present in an amount in the range of from about 25% to about 60% by weight of the fluid.
13. The fluid of claim 1 wherein the hydraulic cement comprises a Portland cement.
14. The fluid of claim 1 wherein the hydraulic cement comprises at least one of the following group: an ASTM Class C fly ash, a mixture of ASTM Class F fly ash and hydrated lime, a mixture of vitrified shale and hydrated lime, and mixtures thereof.
15. The fluid of claim 14 wherein the hydraulic cement is present in an amount in the range of from about 50% to about 70% by weight of the fluid.
16. The fluid of claim 1 further comprising an oil viscosifier.
17. The fluid of claim 16 wherein the oil viscosifier is an organophilic clay.
18. The fluid of claim 16 wherein the oil viscosifier is present in an amount in the range of from about 0.01% to about 2% by weight of the invert emulsion.
19. A fluid comprising a hydraulic cement and an invert emulsion of an oleaginous fluid, a nonoleaginous fluid, and an emulsifying surfactant, wherein the emulsifying surfactant:
comprises an ether carboxylic acid;
has an LC50 or EC50 that is greater than about 10 milligramsliter with respect to Skeletonema costatum, Acartia tonsa, Scopthalmus maximus (juvenile), or Corophium volutator; and
demonstrates a biodegradability of:
greater than about 70% biodegradation in 28 days when tested according to method OECD 301A or 301E; or
greater than about 60% biodegradation in 28 days when tested according to method OECD 301B, 301C, 301F, or 306.
20. The fluid of claim 19 wherein the oleaginous fluid:
demonstrates greater than about 60% biodegradation in 28 days when tested according to method OECD 306; and
has an LC50 that is greater than about 10 milligrams per kilogram of dry sediment with respect to Corophium volutator.
21. The fluid of claim 19 wherein the invert emulsion is present in the fluid in an amount in the range of from about 20% to about 60% by weight.
22. The fluid of claim 19 wherein the oleaginous fluid comprises a blend of C10-C18 normal alkanes.