Appeal No. 2003-0965
Application No. 09/030,829
to the HDC to request data be sent from the HDC to the MCU.
(Specification, page 33, lines 12-13). The HDC sends a response
status signal (acknowledgment signal ACK) to the MCU, which
causes the MCU to read a "read data" (a data word) from the HDC.
(Specification, page 33, line 19-33). The timings of the ACK
signals are continuous, discrete, or a combination of both
depending on the processing condition of the HDC.
(Specification, page 25, lines 26-31). For a single request
signal from the MCU, in a first mode the HDC sends one (discrete)
ACK signal, in a second mode the HDC sends plural (continuous)
ACK signals, and in a third mode some combination of the ACK
signals.
Claim 1 is representative of the claimed invention and is
reproduced as follows:
1. A data access unit including a hard disk controller and a
microcomputer unit connected to said hard disk controller, said
data access unit comprising:
clock synchronizing means for operating said hard disk
controller and said microcomputer unit in synchronization with a
clock signal; and
control means for controlling timing of outputting a hard
disk controller-to-microcomputer response status for each read
data depending on a processing condition of the hard disk
controller, the timing of the output of the response status being
continuous, discrete or a combination thereof for each read data.
2
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