Patent application number | Description | Published |
20080276002 | Traffic routing based on client intelligence - Techniques are described for making the best connection between a client and a server. The best connection is determined based upon the proximity of the client to the server, and the load and availability of the server. Proximity is determined by connection racing in which response times to requests made to various sets of servers are compared. The load is determined by back-end monitoring logic for each set of servers and is indicated in the response sent by the server. The availability of the server is monitored by a virtual IP server located with each set of servers. The virtual IP server selects available servers to respond to the request from the client. When the client receives responses, the client selects a server based on (a) the response times and (b) load information in the responses in order to make the best connection. | 11-06-2008 |
20080307037 | Client Notification Mechanism Over HTTP - A TCP connection is opened between a client and a server. An HTTP client request is transmitted from the client to the server over the open TCP connection. If client data is not pending at the server upon receipt of the HTTP client request at the server, the server waits for client data to become available before sending a server response to the client, thereby maintaining the open TCP connection. However, if client data is pending at the server upon receipt of the HTTP client request at the server, a server response including the client data is transmitted from the server to the client over the open TCP connection. Promptly upon receiving the server response, the client transmits a new HTTP client request to the server, thereby ensuring that an open TCP connection is maintained between the client and the server. | 12-11-2008 |
20080320307 | Method for Session Security - A secret string is established so as to be known only to a client computing system and a server computing system. A non-encrypted version of a message, a message counter value, and first hash value are received by the server computing system from the client computing system. The first hash value, based on a content of the message, the message counter value, and the secret string, is generated at the client computing system using a first hash algorithm. Using the first hash algorithm, the server generates second hash value based on the content of the received message, the received message counter value, and the secret string. The server computing system accepts the received non-encrypted version of the message as authentic upon determining that the received message counter value is greater than a previously received message counter value and that the second hash value matches the first hash value. | 12-25-2008 |
20090006532 | DYNAMIC PHISHING PROTECTION IN INSTANT MESSAGING - Method, apparatus, and systems are directed to phishing detection and prevention in Instant Messaging (IM) environments. A variety of sources provide phishing data to a client phishing engine (CAE). The CAE may receive data from various applications local to the client device, from sources external to the client device, user input, and data from a plurality of other client devices. The CAE may employ the data to block access to a site and/or provide a warning message. At least some of the phishing data is provided to a centralized anti-phishing server (CAS) from a plurality of client devices. The CAS then attempts to use the received phishing data to search for the originator of the phishing site, and prevent future messages associated with the site. CAS will provide information about the detected phishing sites to a filtering application, such that the phishing site may be appropriately blocked. | 01-01-2009 |
20090049190 | MULTIPLE POINTS OF PRESENCE IN REAL TIME COMMUNICATIONS - Systems and methods are provided for multiple points of presence (MPOP) in the real time communication of data between or among users. More particularly, according to embodiments of the present invention, a messaging service network is provided that allows a user to connect to the messaging service network from multiple client devices and access features associated with the messaging service network from any one of the multiple client devices at any point in time. In this manner, a user can seamlessly transition among multiple client devices without interruption and access services provided by the messaging service network including, but not limited to, sending/receiving instant message (or “IM”) data to other user(s), publishing/subscribing presence to other user(s), making/receiving phone calls between user(s), etc. | 02-19-2009 |
Patent application number | Description | Published |
20100091491 | TOTAL INTERNAL REFLECTION LENS FOR COLOR MIXING - A total-internal-reflection (TIR) lens for color mixing includes a body member having an outer surface and an interior open channel extending longitudinally through the body member. The body member and the interior open channel are substantially symmetric with respect to an optical axis, and the outer surface is shaped to provide total internal reflection. The body member has a first end surface region at a first end of the open channel for accommodating a light source and a second end surface region opposite the first end region. The second end surface region includes a plurality of refractive surface regions positioned around the second end region of the open channel. The lens is configured to provide projected light substantially centered with respect to the optical axis when the light source is positioned off the optical axis. In a specific embodiment, a lighting apparatus for providing centered white light includes such a lens and a plurality of light sources. | 04-15-2010 |
20100091499 | Total Internal Reflection Lens and Mechanical Retention and Locating Device - A lens assembly includes a total internal reflection lens and a lens holder. The lens includes a body member having an outer surface shaped to provide total internal reflection and an interior open channel extending longitudinally through the body member. The body member has a first end region for accommodating a light source and a second end region that includes a plurality of refractive surface regions positioned around the open channel. The lens holder has a concave interior surface shaped to accommodate the optical body member of the lens and a convex exterior surface. The holder has multiple clips for securing the lens. The holder also has three or more support members extending from the exterior surface toward the first end. The support members are adapted for centering the optical body member with respect to the light source and maintaining the light source in the specified position in relation to the optical body member. | 04-15-2010 |
20110149581 | TOTAL INTERNAL REFLECTION LENS WITH INTEGRATED LAMP COVER - A total internal reflection (TIR) lens has an integrated lamp cover adapted to a lamp of a desired form factor (e.g., PAR-38). The size and shape of the TIR lens can be adapted to optimize the light output of the lamp with little regard to the desired form factor. The integrated lamp cover can extend the front surface of the TIR lens in a direction transverse from the optical axis. | 06-23-2011 |
20120033422 | LIGHTING APPARATUS WITH TOTAL INTERNAL REFLECTION LENS AND MECHANICAL RETENTION AND LOCATING DEVICE - A lighting apparatus includes a light source having a plurality of light-emitting-diodes and a lens assembly with a lens and a lens holder. The lens includes a body member having an outer surface shaped to provide total internal reflection and an interior open channel extending longitudinally through the body member. The body member has a first end region for accommodating the light source and a second end region that includes a plurality of refractive surface regions positioned around the open channel. The lens holder has a concave interior surface shaped to accommodate the optical body member of the lens and a convex exterior surface. The holder has multiple clips for securing the lens and three or more support members extending from the exterior surface toward the first end. | 02-09-2012 |
20120033428 | TOTAL INTERNAL REFLECTION LENS AND LENS HOLDER - A lens assembly has a lens and a holder. The lens has an optical body member having a first end, a second end, and an outer surface. The outer surface is shaped to provide total internal reflection. The optical body member also has an interior open channel extending longitudinally from the first end to the second end thereof. The second end includes a peripheral flange that is free of curved refractive surface regions and has one or more index regions and one or more notches formed therein. The holder is a substantially cylindrical support member having a hollow interior region shaped to accommodate the optical body member. The holder also has a top rim region having one or more slots for receiving the index regions of the optical body member and one or more snap clips for fitting to the notches of the peripheral flange region of the optical body member. | 02-09-2012 |
20120120646 | TOTAL INTERNAL REFLECTION LENS WITH PEDESTALS FOR LED EMITTER - A lens has an optical body member with a first end, a second end, and an outer surface, the outer surface being shaped to provide total internal reflection. The optical body member further has an interior open channel extending longitudinally from the first end to the second end thereof. The optical body member further has a plurality of refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel. The optical body member also has a plurality of protrusions extending from the first end of the optical body member. The protrusions are disposed circumferentially around the first opening of the interior open channel and are arranged to center the optical body member and to maintain the optical body member at a predetermined position with respect to the light source. In a light apparatus having an LED emitter disposed on a substrate, the protrusions can fit into notches in the substrate. | 05-17-2012 |
20130093354 | MULTIPLE-LED EMITTER FOR A-19 LAMPS - An LED (light-emitting diode) high-power wide-angle A-19 lamp needs only a single LED emitter having multiple LEDs. The LED A-19 lamp includes a lamp envelop structure configured for transmission of light therethrough and a base structure coupled to a lower portion of the lamp envelop structure for coupling to an external power source. The dimensions of the lamp envelop structure and the base structure conform to requirement of a conventional A-19 lamp. The LED emitter includes a plurality of light-emitting diodes (LEDs) disposed in a single recess in a substrate and a single lens disposed over the LEDs and the substrate. In a specific embodiment, the emitter is configured to consume electrical power of 30 Watts or higher and to provide light distribution at 130 degrees or wider at 50% peak intensity without additional secondary optical components. | 04-18-2013 |
20130120985 | SPOT TIR LENS SYSTEM FOR SMALL HIGH-POWER EMITTER - A lamp includes a single emitter structure having a substrate with 25 or more light emitting diodes (LEDs) arranged thereon and a power rating of 80 Watts or more, a total internal reflection (TIR) lens with a plurality of refractive surface regions disposed on the step-shaped upper surface of the optical body, and a holder having a plurality of tabs disposed along an inside rim of the holder and configured for radial compression fit with a flange of the lens, and three or more support members configured for centering the optical body member with respect to the single emitter structure. A low weight ratio of hardener over base resin below 6 is used, for example, between 1.5:1 to 2.5:1. | 05-16-2013 |
20130258654 | LED-BASED MR16 REPLACEMENT LAMP - An LED-based lamp can be made to have a form factor compatible with fixtures designed for MR16 lamps. Such a lamp can have a housing that provides an external electrical connection. Inside the housing is disposed a single emitter structure having a substrate with multiple light-emitting diodes (LEDs) arranged thereon. Different LEDs produce light of different colors (or color temperatures). For example, at least one LED can produce a warm white light, while at least one other LED produces a cool white light and at least one other LED produces a red light. A total-internal-reflection (TIR) lens is positioned to collect light emitted from the single emitter structure and adapted to mix the light from the LEDs to produce a uniform white light. A diffusive coating is applied to a front face of the TIR lens for further color mixing. | 10-03-2013 |
20130270585 | SYSTEM AND METHODS FOR WARM WHITE LED LIGHT SOURCE - An LED light emitter includes a single emitter structure having a substrate with a plurality of light emitting diodes (LEDs) arranged thereon, wherein the plurality of LEDs includes at least one first LED die that produces a first color light, and at least one second LED die that produces a second color light. The LED light emitter also includes a total internal reflection (TIR) lens positioned to collect light emitted from the single emitter structure and adapted to mix the light from the plurality of LEDs to produce a uniform light. The plurality of LEDs are selected such that the light output by the LED light emitter has a desired color temperature when an equal current is supplied to all of the plurality of LEDs. | 10-17-2013 |
20140369051 | SPOT TIR LENS SYSTEM FOR SMALL HIGH-POWER EMITTER - A lamp includes a single emitter structure having a substrate with 25 or more light emitting diodes (LEDs) arranged thereon and a power rating of 80 Watts or more, a total internal reflection (TIR) lens with a plurality of refractive surface regions disposed on the step-shaped upper surface of the optical body, and a holder having a plurality of tabs disposed along an inside rim of the holder and configured for radial compression fit with a flange of the lens, and three or more support members configured for centering the optical body member with respect to the single emitter structure. | 12-18-2014 |