Appeal No. 2006-2452
Application No. 09/797,872
response received by the controlling device from the controlled device is an
interim response. If the response is determined to be an interim response, the
controlling device terminates the transaction without waiting for a final response
from the controlled device.
Claim 1 is illustrative of the invention and reads as follows:
1. An electronic device system having a controlling device and a controlled
device interconnected via a data bus which complies with a predetermined
communication format and which allows data to be exchanged between the
devices, said electronic device system comprising:
means for causing said controlling device to transmit a command to
said controlled device over said data bus in a transaction;
means for allowing said controlling device to receive a response
returned within a first predetermined period by said controlled device over said
data bus in response to the transmitted command during said transaction;
means for judging whether the response received by said
controlling device is an interim response corresponding to when said controlled
device determines that the transmitted command has been received and that a
transmission of a final response is impossible within a second predetermined
period less than the first predetermined period; and
means for immediately terminating said transaction without waiting
for reception of said final response from said controlled device if said judging
means judges the response received by said controlling device to be said interim
response, said means for terminating including means for recognizing a
command transmission error when said controlling device does not receive a
response within said first predetermined period.
The Examiner relies on the following prior art:
Hoekstra et al. 5,754,548 May 19, 1998
(Hoekstra)
Kagawa 6,160,637 Dec. 12, 2000
(filed Mar. 26, 1998)
2
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