Abstract: A variety of improvements to docking systems for portable computing devices are disclosed. For example, improved techniques for maintaining a data connection between a base portion of the docking system and a case portion of the docking system are disclosed. As an example, the docking system can include improved magnetics that help maintain the data connection between the base portion and the case portion, even during rotational movements of the case portion relative to the base portion. Further still, examples are described where the detection of a docking action between the case portion and the base portion can trigger any of a number of responsive actions.

Abstract: A system for providing a common transport signal comprising an analog information signal and a digital information signal including a transmitter and a receiver for the common transport signal is disclosed. The transmitter includes an analog information signal modulator, placing the analog information signal onto a first intermediate frequency, a digital information signal modulator, placing a digital information signal onto a second intermediate frequency, a first upconverter and amplifier for upconverting the analog information signal, and a second upconverter for upconverting a frequency translated digital information signal. The system includes a power combiner for adding the upconverted analog and digital information signal to form a common transport signal. The receiver includes a signal receptor and conditioner, a signal splitter and dual signal recovery chains; each chain including at least a downconverter, a bandpass filter and intermediate frequency amplifier, and a signal demodulator.

Abstract: A system for providing a common transport signal comprising an analog information signal and a digital information signal including a transmitter and a receiver for the common transport signal is disclosed. The transmitter includes an analog information signal modulator, placing the analog information signal onto a first intermediate frequency, a digital information signal modulator, placing a digital information signal onto a second intermediate frequency, a first upconverter and amplifier for upconverting the analog information signal, and a second upconverter for upconverting a frequency translated digital information signal. The system includes a power combiner for adding the upconverted analog and digital information signal to form a common transport signal. The receiver includes a signal receptor and conditioner, a signal splitter and dual signal recovery chains; each chain including at least a downconverter, a bandpass filter and intermediate frequency amplifier, and a signal demodulator.

Abstract: A system for providing a common transport signal comprising an analog information signal and a digital information signal including a transmitter and a receiver for the common transport signal is disclosed. The transmitter includes an analog information signal modulator, placing the analog information signal onto a first intermediate frequency, a digital information signal modulator, placing a digital information signal onto a second intermediate frequency, a first upconverter and amplifier for upconverting the analog information signal, and a second upconverter for upconverting a frequency translated digital information signal. The system includes a power combiner for adding the upconverted analog and digital information signal to form a common transport signal. The receiver includes a signal receptor and conditioner, a signal splitter and dual signal recovery chains; each chain including at least a downconverter, a bandpass filter and intermediate frequency amplifier, and a signal demodulator.

Abstract: Transmitting an analog information signal, such as a standard analog television signal, with a digital information signal, such as a high or standard definition television signal, in single channel. A transmitter processes and band limits the analog information signal to have its own carrier signal and fit within one portion of the channel. The transmitter also processes the digital information signal to have its own carrier signal in another portion of the channel. The processed analog and digital information signals are added together and converted for RF transmission as a common transport signal.

Abstract: Improved methods and apparatus for predicting physical properties of complex materials are provided. The physical properties are predicted from the electronic structure of the material. The electronic structure is determined using an iterative, computer-based technique. The iterative technique has been found to have a rate of convergence at least an order of magnitude faster than prior techniques for determining electronic structures. Among other applications, the invention is used to prepare materials having selected physical properties under selected conditions.