Institute for Information Industry

Muh Wu

Chih-Hsiang Ho

Shu-Min Chuang

Yi-Chih Tung

Chia-Chen Yu

Ding-Jie Huang

I-Fang Wu

Shun Ho Chung

Kuo-Yu Chuang

A frequency calibration apparatus and method are provided. An oscillator of the frequency calibration apparatus has an operation frequency. The frequency calibration apparatus receives a plurality of time packets from an NTP server at a plurality of first time points. Each of the time packets records a second time point that the NTP server transmits the time packet. The frequency calibration apparatus calculates an offset for each of the time packets in a subset of all the time packets, calculates a clock skew according to the first time points and the offsets of the time packets in the subset, calculates a difference between the clock skew and a standard frequency value, determines that an absolute value of the difference is greater than a threshold, and adjusts the operation frequency to an initial frequency after determining that the absolute value of the difference is greater than the threshold.

Frequency calibration apparatus and method

An Internet/telephone adapter device and method is provided to automatically detect the communication type of an incoming call. The Internet/telephone adapter device comprises an auto-detecting means for providing a mechanism to detect the communication type of an incoming call by means of the feature rings. The feature rings have a predetermined feature distinguishable from non-feature rings. Whenever the auto-detecting means determines the communication type of the incoming call, it sends a control signal to CPU. In response to the control signal, the CPU will automatically switch the linkage to the Internet or to the PSTNs without further human operations.

Internet/telephone adapter device and method

A multiple changeable addressing mapping circuit is disclosed for converting an input logic address of a field array in a data array into an output physical address. The circuit has multiple address mappers for process the conversion between the input logical address and the output physical address. The circuit also has a mapper selector for selecting an address mapper to output physical address. The circuit further has a control and interface circuit for setting the registers in the address mapper, and controlling the address mapper and mapper selector.

Multiple changeable addressing mapping circuit

Growing community of inventors

Taipei, Taiwan

Muh Wu