Half duplex device and signal processing method thereof
AssigneeWinbond Electronics Corp.
InventorYueh-Chang Chen
Life of this patent
Estimating the term…
Abstract
A half duplex device and signal processing method thereof. First, a signal detection unit of a signal detector of a half duplex device obtains a short-term power and long-term power. Next, a data update unit of the signal detector sets a short-term power threshold as a default threshold, determines whether the long-term power is greater than the default threshold, sets the short-term power threshold value equal to the long-term power value if the long-term power value is greater than the default threshold value, and provides smooth performance in a noisy environment.
Claims5
A signal processing method for a signal detector of a half duplex device, dynamically substituting a short-term power threshold value of the signal detector, comprising the steps of:
- obtaining a long-term power;
- setting the short-term power threshold as a default threshold;
- determining whether the long-term power is greater than the default threshold;
- setting the short-term power threshold value equal to the long-term power value if the long-term power value is greater than the default threshold value;
- unchanging the default threshold value if the long-term power is smaller than the default threshold;
- repeating the determining and setting steps to change the short-term power threshold value at time intervals;
- and
- the half duplex device receiving or sending vocal signals according to the short-term power threshold value.
A half duplex device comprising a signal detector for dynamically substituting a short-term power threshold value thereof, the signal detector comprising:
- a signal detection unit, obtaining a long-term power thereof;
- and
- a data update unit, coupled to the signal detection unit, setting the short-term power threshold as a default threshold, determining whether the long-term power is greater than the default threshold, setting the short-term power threshold value equal to the long-term power value if the long-term power value is greater than the default threshold value, unchanging the default threshold value if the long-term power is smaller than the default threshold, repeating the determining and setting steps to change the short-term power threshold value at time intervals, and enabling the half duplex device to receive or send vocal signals according to the short-term power threshold value.
Dependencies are inferred from the claim text.