Patent ID: 7593301

Claim:
A recording apparatus for generating write pulses suitable for various optical recording media, the recording apparatus comprising: a pattern detector receiving a non return to zero inverted (NRZI) signal and distinguishing between information about a mark and information about a space; a memory storing timing parameters for a start pulse, a middle pulse, an ending pulse, and a cooling pulse of the write pulses corresponding to each of the various recording media; a register accessed as an activation table that determines whether a laser signal is to be turned on/off at time points set by the timing parameters; a parameter fetcher fetching suitable timing parameters from the memory in response to a result of the distinguishing by the pattern detector; and a write pulse generator generating the write pulses based on the timing parameters received from the parameter fetcher and information stored in the register, wherein the timing parameters comprise parameter ts 1 , which corresponds to a start edge of the start pulse, parameter ts 2 , which corresponds to a second edge of the start pulse, parameter ts 3 , which corresponds to a third edge of the start pulse, parameter tms, which corresponds to a start edge of the middle pulse, parameter tmw, which denotes a width of the middle pulse, parameter tmc, which denotes a number of edges of the middle pulse, parameter te 1 , which corresponds to a start edge of the ending pulse, parameter te 2 , which corresponds to a second edge of the ending pulse, parameter te 3 , which corresponds to third edge of the ending pulse, parameter tcs, which corresponds to a start edge of the cooling pulse, parameter tcw, which denotes a width of the cooling pulse, and parameter tcc, which denotes the number of edges of the cooling pulse.