David M Patton

US Patent:

7739332, Jun 15, 2010

Filed:

Sep 27, 2006

Appl. No.:

11/535827

Inventors:

David Clay Patton - Fairfax VA, US
Darin Edward Chambers - Leesberg VA, US
Matt Jonathan Weinberg - Arlington VA, US

Assignee:

Trafficland, Inc. - Fairfax VA

International Classification:

G06F 15/16

US Classification:

709205

Abstract:

An internet user visits a web site and requests to see imagery from a specified one of a plurality of video cameras. At a system associated with the web site, a load distribution server assigns the user's request to one of a plurality of image servers. The assigned image server first checks its local image cache to see whether a recent image from the specified camera is stored there. If so, the image from that local image cache is sent to the user. If the local image cache does not have a recent image from the requested camera, the assigned image server then checks its local request cache to see whether an earlier process has recently requested the same imagery. If so, then the assigned image server simply waits for the earlier process to compete instead of initiating its own new image retrieval request. If no earlier process has recently requested the same imagery, the assigned image server issues its own image retrieval request. Information in image and the request caches of each image server is replicated across all the image servers.

US Patent:

46066667, Aug 19, 1986

Filed:

Mar 22, 1984

Appl. No.:

6/592463

Inventors:

David D. Patton - Gaithersburg MD

International Classification:

B42F 1314

US Classification:

402 62

Abstract:

A paper binder or holder for retaining loose leaf paper sheets, folders, technical bulletins, advertisements and the like in assembled and stacked relation. The device includes a bottom or base strip having a plurality of upstanding pegs integral therewith and which are arranged in spaced parallel relation and provided with peripheral serrations. The pegs extend through apertures in the edge of the paper sheets and also extend through apertures in a clamping bar or strip which engages the upper surface of the top paper sheet. Each aperture in the retaining strip has a tongue which engages the peg by engaging under the serrations to lock the clamping bar in clamped position against the top paper sheet. The entire device is constructed of plastic to enable the cost of manufacture to be retained at a minimum.