Method and apparatus for transceiving infrared signals

An infrared transceiving circuit comprising:

• an infrared receiving circuit that includes:
• a light receiving diode;
• an amplifier circuit operably coupled to the light receiving diode, wherein the amplifier circuit includes a differential input having a capacitance and wherein the amplifier circuit amplifies a signal received by the light receiving diode to produce an amplified signal;
• peak detect circuit operably coupled to receive the amplified signal, wherein the peak detect circuit includes an adjustable threshold circuit that includes a capacitance to establish a threshold signal and a data comparison signal;
• and
• a comparator operably coupled to receive the threshold signal and the data comparison signal and to produce, therefrom, an output indicative of the data signal;
• a transmission circuit that includes a light transmitting diode which transmits infrared pulses at a given power level;
• and
• an interference cancellation circuit that provides a signal to the amplifier circuit and the peak detection circuit when the transmission circuit is disabled, wherein the signal causes voltage of the capacitance of the amplifier and the peak detection circuit to reset to a predetermined initial operating level.

A method for transceiving data, the method comprising the steps of:

• receiving an input data signal having a large dynamic range;
• amplifying, based on an adjustable gain, the input data signal while maintaining pulse width fidelity of the input data signal to produce an amplified data signal;
• scaling, based on an adjustable threshold, the amplified data signal and to produce a scaled representation of the amplified data signal;
• setting the adjustable gain and the adjustable threshold to a predetermined initial operating level when transmission of an outgoing data signal at a given power level has ended.

A computer comprising:

• a central processing unit;
• system memory that stores data and programming instructions, wherein at least a portion of the programming instructions, when read by the central processing unit, causes the central processing unit to prepare data for transmission to a computer peripheral and to receive data from the computer peripheral;
• and
• a wireless transceiving circuit that includes:
• a receiving circuit that receives, via a wireless transceiving path, the data from the computer peripheral;
• a transmission circuit that transmits the data to the computer peripheral over the wireless transceiving path;
• and
• interference cancellation circuit that provides a signal to the receiving circuit when the transmission circuit has ended transmission of the data to the computer peripheral, wherein the signal causes the receiving circuit to reset to an initial operating setting.

A computer peripheral comprising:

• a processing circuit;
• system memory that stores data and programming instructions, wherein at least a portion of the programming instructions, when read by the processing circuit, causes the processing circuit to receive data from a computer and to prepare data for transmission to the computer;
• and
• a wireless transceiving circuit that includes:
• a receiving circuit that receives, via a wireless transceiving path, the data from the computer;
• a transmission circuit that transmits the data to the computer over the wireless transceiving path;
• and
• interference cancellation circuit that provides a signal to the receiving circuit when the transmission circuit has ended transmission of the data to the computer, wherein the signal causes the receiving circuit to reset to an initial operating setting.