Photonics Corporation

Other

Oak Technology, Inc.

Bernard E Stewart

John N Piccone

Richard C Allen

Stanley L Fickes

Robert J Grady

Walter S Johnson

James L Konsevich

Louis R Janis

Gary M Cisneros

Gary N Hughes

Roy M Wen

Rick L Reagan

Eugene Weddle

Singh Shashij

A boat anchoring system that includes a base, a pulley attached to the base, a line, and an anchor pole. The line extends over the pulley, through the first hole, and is attached to the lower end portion of the anchor pole. The line controls the relative position of the anchor pole in the second hole for raising and lowering the anchor pole. The line can extend to the cockpit of the boat so that the position of the anchor pole is controllable from the cockpit.

Anchor pole securement device

The present invention simulates the behavior of a storage component by first determining whether a timing violation has occurred for the storage component. If one or more timing violations is detected, then an x (indicating uncertainty) is reflected at the output of the storage component. This x is maintained at the output of the storage component for a predetermined number of timing units. After the predetermined number of timing units has expired, the output of the storage component is changed from x to a certain value, such as a logical 1 or a logical 0. By changing the output to a certain value, the present invention prevents the x at the output of the storage component from indefinitely propagating to other components in the circuit. This in turn prevents large numbers of x's from appearing in the simulation results provided to the designer. Instead, values that are certain will appear in the results. Because these values are certain, they can be used by the designer to determine whether the rest of the circuit operated properly.

Method and apparatus for simulating a storage component

A diffuse infrared communication link provides for communication directly between nodes each having a transceiver. A repeater may be present to facilitate communication. Each node is automatically reconfigurable between operation with or without a repeater. When a repeater is present each node automatically ignores any transmission by another node.

Infrared communication repeater architecture

The present invention is for a radiation transmitter which transmits radiation to an illumination spot for forming reflected radiation. The transmitter includes a plurality of radiation transmission sources. Each of the sources transmits to a portion of the illumination spot. The transmitter includes means for alternately activating a portion of the transmission sources to illuminate a portion of the illumination spot for aligning a radiation receiver to receive the reflected radiation. Each resident of network transmits in turn its address and the address of each resident that it recognizes. Once a prospective resident can recognize each resident of the network it announces that it is joining the network and states its new address and the address of each resident it can see. Every resident then amends its list of recognized residents to include the new member.

Infrared network entry permission method and apparatus

An infrared RS 232 communication link protocol is particularly suited for correcting any errors introduced during a transmission of information. The information is transmitted from a transmitting station to a receiving station. Each of the stations has a control counter each of which toggles between a logic 0 and 1. The control counter for the transmitter and the receiver are phase locked so that all errors may be corrected. The receiver echoes each data bit back to the transmitter which compares the echoed data to the transmitted data. If there is a match, the transmission was successful. If there is no match, the data must be retransmitted. A retransmit control character RTXx is sent to indicate that the receiver should discard the previous character and prepare for a retransmission of the character having the error. Under the proper circumstances and if the counters are still phase locked, the receiver then discards the previously stored character and inverts the counter. If the receiver detects that it has received an erroneous character, such as one having multiple or no PPM pulses, the receiver will simply respond with the reject control character REJ. In such a case, the transmitter will respond with an RTXx which causes the receiver to discard the previously stored character and invert the counter.

Link protocol for RS 232 communications

Infrared network entry permission apparatus

Growing community of inventors

Fremont, CA, United States of America

Bernard E Stewart