Apparatus and method for generating write pulse appropriate for various optical recording media
AssigneeSamsung Electronics Co., Ltd.
InventorJin-gyo Seo
Life of this patent
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Abstract
A write pulse generating apparatus includes a control unit which provides information on an optical recording medium type and information on a recording speed factor, and a control signal generating unit which determines a multi-pulse type which is to be generated in a multi-pulse interval based on the information recording medium type and recording speed factor. The generating unit generates a signal for controlling the light emitting device driving unit to generate a write pulse having the determined multi-pulse type. A control unit sets the level of the write pulse for up to an entire interval of a write mark and/or a write space according to the optical recording medium type and the recording speed factor.
Claims38
A write pulse generating apparatus for use with an optical drive and optical recording media having corresponding types and recording speeds, the apparatus comprising:
- a generator which generates a write pulse for a received one of the optical recording media;
- and
- a light emitting device which writes data on the received one optical recording medium using the generated write pulse,
- wherein the write pulse includes:
- a determined pulse type of a multi-pulse interval determined as one of a non-multi-pulse type and a multi-pulse type based on information on the type and current recording speed factor of the received one optical recording medium, and
- the determined pulse type is generated by the light emitting device.
A write pulse generating apparatus which generates a write pulse appropriate to a received one of optical recording media by controlling a light emitting device using a light emitting device driving unit so that a desired write pulse is generated, the write pulse generating apparatus comprising:
- a control unit which determines and provides type information on a type of the received one optical recording medium and speed information on a recording speed factor;
- and
- a control signal generating unit which determines a type of a multi-pulse to be generated in a multi-pulse interval based on the type and speed information for the received optical recording medium provided by the control unit, and generates a control signal to control the light emitting device driving unit to generate a write pulse having the determined multi-pulse type.
A write pulse generating apparatus which generates a write pulse appropriate for an optical recording medium by controlling a light emitting device driving unit, the apparatus comprising:
- a control unit which sets a level of the write pulse for up to an entire interval of a write mark and/or a write space to be written on the optical recording medium according to a type and recording speed factor of the optical recording medium;
- and
- a control signal generating unit controlled by the control unit and which generates a control signal for use in changing the level of the write pulse for each interval of the write mark and/or the write space, and sends the control signal to the light emitting device driving unit.
A write pulse generating apparatus which generates a write pulse appropriate for an optical recording medium, the apparatus comprising:
- a light emitting device which emits light corresponding to the write pulse to be received by the optical recording medium;
- a driving unit which drives the light emitting device such that the write pulse is generated as a type which is determined according to a type and recording speed factor of the optical recording medium;
- a light receiving unit which receives light reflected from the optical recording medium;
- a power control signal providing unit which provides a power control signal for use in controlling power for each one of a plurality of channels to the driving unit using an output signal from the light receiving unit and a predetermined reference voltage in order to automatically control power needed in the light emitting device;
- a control signal generating unit which generates a signal for controlling whether to send the power control signal for each of the channels and which is input to the driving unit such that a level of the write pulse is variably adjusted up to an entire interval of a write mark and/or a write space to be formed on the optical recording medium according to a type and recording speed factor of the optical recording medium, and sends the generated signal to the driving unit;
- and
- a control unit which controls whether to generate a control signal in the control signal generating unit and a pulse type of the control signal according to the type and recording speed factor of the optical recording medium.
A write pulse generating method which generates a write pulse appropriate for an optical recording medium using a light emitting device, the method comprising:
- determining a pulse type of a multi-pulse interval of a write pulse generated from the light emitting device as one of a non-multi-pulse type and a multi-pulse type according to a type and recording speed factor of the optical recording medium;
- and
- controlling a generation of the write pulse such that the write pulse having the determined pulse type is generated from the light emitting device.
A write pulse generating method which generates a write pulse appropriate for an optical recording medium using a light emitting device, the method comprising:
- determining a pulse type of a multi-pulse interval included in the write pulse generated from the light emitting device according to a type and recording speed factor of the optical recording medium;
- generating a control signal which controls whether to send a power control signal provided for each of a plurality of channels in order to drive the light emitting device such that the write pulse having the determined pulse type is emitted from the light emitting device;
- and
- driving the light emitting device with the power control signal which is sent through a selected one of the channels selected by the control signal.
A write pulse generating method which generates a write pulse appropriate for an optical recording medium using a light emitting device, the method comprising:
- determining the write pulse level of up to an entire interval of a write mark and/or a write space to be formed on the optical recording medium according to a type and recording speed factor of the optical recording medium;
- generating a control signal for controlling whether to send a power control signal provided for each of a plurality of channels in order to drive the light emitting device such that light having the determined write pulse level of the write pulse is emitted from the light emitting device;
- and
- driving the light emitting device with the power control signal which is provided through a channel selected by the control signal.
An optical drive for recording/reproducing data with respect to optical recording media, the drive comprising:
- a generator which generates elements of a write pulse;
- a controller which, according to a determined type of a optical recording medium received by the optical drive, and generates a control signal to generate the write pulse corresponding to the determined type of the optical recording medium;
- and
- a light unit which selects ones of the generated elements according to the control signal so as to generate the write pulse.
Dependencies are inferred from the claim text.