Optical disc apparatus
AssigneeRicoh Company, Ltd.
InventorKazutaka Yamamoto
Life of this patent
Estimating the term…
Abstract
An optical disc apparatus includes a pause circuit for pausing data encoders upon receiving a pause signal so that a write operation may be paused without writing dummy data, thereby maintaining data succession. The optical disc apparatus also includes a circuit for accurately determining a write start location by referring to previously written data. A processor generates a pause signal when the amount of data in the optical drive apparatus data buffer is low, and removes the pause signal when additional data from a host is received. The processor may also automatically reduce the write speed of the optical disc apparatus upon a pause condition, thereby preventing the necessity for excessive pausing.
Claims39
A method of recording on an optical disc recording media, said method comprising the steps of:
- transferring stored input information to an encoder;
- transferring encoded information to a record circuit;
- causing an input buffer to contain less than a threshold amount of said input information;
- and
- when said input buffer contains less than the threshold amount of said input information, pausing said transferring of said encoded information, to stop said record circuit at a first point on said optical disk recording media while maintaining said encoded information.
A method of recording data on an optical data recording media, comprising:
- encoding data to be recorded to produce encoded data;
- storing said encoded data in a device;
- pausing a recording operation;
- during said pausing, maintaining said encoded data in said device;
- and
- after said pausing, using said maintained encoded data to resume said recording operation.
A circuit for encoding information to be written, said circuit comprising:
- an input for receiving information to be encoded;
- an encoder, coupled to said input, for encoding information to be written as encoded information;
- a buffer, coupled to said encoder, for storing the encoded information;
- and
- a controller, coupled to said encoder and said buffer, for pausing said encoder while maintaining the encoded information stored in said buffer.
An apparatus for recording on CD-R or CD-RW data recording media, said apparatus comprising:
- an input buffer for receiving and storing data;
- an encoding circuit for receiving data from said input buffer and for storing encoded data in an encoding buffer;
- and
- a pause circuit for pausing said encoding circuit while maintaining said encoded data in said encoding buffer, said pause circuit being operated in response to a condition of said input buffer.
An encoding circuit for a CD-R or CD-RW recording apparatus, said encoding circuit comprising:
- a memory;
- and
- a CIRC encoder for generating encoded data, said encoded data being stored in said memory;
- and
- wherein said encoding circuit supports a pause condition which maintains the contents of said memory.
An encoding circuit for a CD-R or CD-RW recording apparatus, said encoding circuit comprising:
- a first memory;
- a second memory;
- a CD-ROM encoder for generating first encoded data, said first encoded data being stored in said first memory;
- and
- a CIRC encoder for generating second encoded data, said second encoded data being stored in said second memory;
- and
- wherein said encoding circuit supports a pause condition which pauses said CD-ROM encoder and said CIRC encoder while maintaining the contents of said first and second memories.
Dependencies are inferred from the claim text.