Abstract: Embodiments may relate to a silicon photonic chip, and particularly a back absorber within the silicon photonic chip. The back absorber may include a substrate material with a slab portion that includes a doped portion of the substrate material. The back absorber may be positioned at the backside of a laser that is configured to project light along a waveguide of the silicon photonic chip. Other embodiments may be described or claimed.

Abstract: A head actuator supporting a data head for read or write operations. The actuator includes a head support excitation shield along a flow path to a leading edge of the slider (or head) to isolate the head support from flow induced excitation and vibration. A method for reading or writing data on a disc via a data head supported by a head support including rotating the disc to create an airflow stream and diverting the air flow stream to shield the head support from excitation.

Abstract: A head actuator supporting a data head for read or write operations. The actuator includes a head support excitation shield along a flow path to a leading edge of the slider (or head) to isolate the head support from flow induced excitation and vibration. A method for reading or writing data on a disc via a data head supported by a head support including rotating the disc to create an airflow stream and diverting the air flow stream to shield the head support from excitation.

Abstract: A telecommunication system (40) with a multiport switch (42) controlled by a central processing unit (44) to interconnect telephone units (48) of an external telephonic network (50) with an internal network of agent telephonic units (52) connected with the multiport switch (42) and to communicate with an information support computer terminal (56) on a single, asynchronous, data communications link (58), a communication protocol method for communicating on the communications link (58) having the steps of establishing a multilayered compressed protocol in which the Data Link (24), Transport (28) and Session (30) layers of the OSI model (20) are combined into a single protocol layer (62), transmitting the compressed protocol on the asynchronous communication link (58), and transmitting a frame of information between the IST (56) and the telecommunication system (40), the frame having a plurality of different fields respectively associated with different types of information arranged in a preselected frame form i

Abstract: A HDTV receiver which is improved in its overall performance and is simplified in its configuration, by improving a symbol timing restoring circuit, includes a tuner for selecting a necessary channel from input signals via an antenna, an IF processing & carrier restoring portion for performing an IF process & carrier restoration from the output of the tuner, an analog-to-digital converter (ADC) for converting the output of the IF processing & carrier restoring portion into a digital signal, a timing restoring portion for restoring a timing from the output of the ADC, a 2:1 down-sampler for 2:1 down-sampling the output of the ADC, a sync detector for detecting a sync from the output of the 2:1 down-sampler, a channel equalizer for performing a channel equalization from the output of the 2:1 down-sampler, a phase controller for correcting the phase error from the output of the channel equalizer, an optimal viterbi decoder for performing a viterbi decoding operation from the output of the phase contr