Xerox Corporation

Kaseya Limited

Redcom Laboratories, Inc.

Redeom Laboratories, Inc.

Charles A Barbe

Michael John Martin

Richard L Forbes, Ii

Charles J Breidenstein

Joseph A Mastrandrea

Robert M Mara

Michael William Elliot

Bruce G Littlefield

Thomas F Shane

Christopher A Hoult

Vivek Jaganathan

Christopher S Sprague

A first entity stores an issuer digital certificate published by a certificate authority (CA) and signed by the issuer certificate; and also stores an old issuer digital certificate published by the CA prior to publication of the issuer digital certificate and an old first entity digital certificate signed by the old issuer digital certificate. The first entity attempts to initiate a secure communication session with a second entity by receiving a second entity digital certificate from the second entity via an electronic network, and sending either the first entity digital certificate or the old first entity digital certificate to the second entity based on which of the issuer digital certificate or the old issuer digital certificate is effective to authenticate the second entity digital certificate received from the second entity. The secure communication session is conducted only if the attempt to initiate the secure communication session is successful.

System for rollout of certificates to client and server independent of public key infrastructure

Test pattern template data are stored in a memory of a printer to identify locations spatially within image data of a test pattern printed by printheads in an inkjet printer. The test pattern template data identifies an origin of a test pattern in the image data and the distances between structures in the test pattern to enable test pattern structure in the image data to be detected and identified more easily.

System and method for analysis of test pattern image data in an inkjet printer using a template

A method controlling toner age in a developer housing including: recording a latent image in a predefined image frame on an imaging surface; and generating a purge patch in an unused portion of the predefined image frame. Other features include generating an inline purge signal to initiate generating of the purge patch; recording the purge patch includes scaling the purge patch to fit in the unused portion of the predefined image frame; activating or inactivating the generating of the purge patch based upon an amount of unused portion of the image frame.

Inline purge capability (purge while run) to improve system productivity during low area coverage runs

A TDM switching system for providing selected connections between large numbers of lines and trunks and which may combine, in an integrated system, several TDM switching systems which are adapted to handle smaller numbers of lines and trunks so as to expand the capacity of such smaller TDM systems. The system has a distributed, modular architecture in which the lines and trunks are arranged in a plurality of domains. The domains each have a link controller which links the domains to interdomain PCM highways. The domains each include, as the members thereof, a plurality of devices. These member devices can be port interfaces which connect telephone lines and trunks and convert the analog telephony signals into PCM signals and vice versa, circuits which provide services, telephony processors which contain the data base of the addresses (telephone numbers) of the various lines and trunks, ringing generators, and interface devices which provide a gateway for signals into the domains for the smaller TDM switching systems. Each domain has its own intradomain PCM highway to which the devices are connected and device control links connecting the devices to a link controller and carrying signalling messages. Each domain may have a different complement of devices. Control signals control the telephony signal process along separate links, unique to each device, which connect that device to the link controller.

Time division multiplex (TDM) switching system especially for pulse code

A system for generating calls in order to test telephone switching systems by simulating traffic loads has line interface circuits which send calls independently and in selected sequence on any number of a group of lines into the telephone switching system under test. Lines of the telephone switching system which are supposed to be called are terminated by the interface and outputs representing the successful completion or failure to complete calls are obtained. Commands for controlling the generation and termination of calls are generated under microprocessor control. DTMF originating and dial tone detecting circuits as well as circuits for transmission and loop polarity testing may be added to the line interface and controlled by the same microprocessor. The system has a microprocessor controlled display and keyboard terminal by means of which instructions for and reports of the results of the tests are obtainable.

System for the testing of telephone switching systems

Growing community of inventors

Rochester, NY, United States of America

Charles A Barbe