Abstract: Embodiments of the invention are generally directed to messaging to provide data link integrity. An embodiment of a method includes transmitting a data stream over a data link from a first device to a second device, the data stream including multiple frames, the data stream being transmitted in a first mode. The method further includes determining a data transmission mode change from the first mode to a second mode for the transmission of the data stream from the first device to the second device, generating mode packets, each mode packet including fields to define a plurality of mode elements, the fields of the mode packet being set to indicate the data transmission mode change, and transmitting the mode packets to the second device prior to implementing the data transmission mode change.

Abstract: Embodiments of the invention are generally directed to signaling for transitions between modes of data transmission. A embodiment of a method includes transmitting a data stream over a data link from a first device to a second device, the data stream operating in a first mode; determining that the data stream is to be changed from the first mode to a second mode; and transmitting a message from the first device to the receiver over a control link, the message indicating that the first device will change the data stream from the first mode to the second mode, the message being sent prior to the change to the second mode.

Abstract: Embodiments of the invention are generally directed to identification and handling of data streams using coded preambles. An embodiment of an apparatus includes an interface with a communication channel, transmitter coupled with the interface to transmit one or more data streams via the interface, and a processing element, the processing element to receive one or more data streams for transmission. Upon receiving multiple data streams for transmission of a first type of data, including a first data stream and a second data stream for transmission of the first type of data, the processing element is to select a first preamble for the first data stream and a second preamble for the second data stream, where the first preamble is distinguishable from the second preamble.

Abstract: Embodiments of the invention are generally directed to partial encryption of data stream. An embodiment of a method includes receiving, at a data transmitting device, a data stream having content including one or more of audio content, video content, and control content, determining one or more content that are to be encrypted. The method further includes partially encrypting the data stream by encrypting the one or more content, and leaving other content unencrypted, and transmitting, from the data transmitting device, the partially encrypted data stream to a data receiving device.

Abstract: Embodiments of the invention are generally directed to performing processing of content through partial authentication of secondary channel. An embodiment of a method includes performing a first authentication between a source transmitting device and a sink receiving device for communication of data streams, and performing a second authentication between the source transmitting device and a bridge device such that the second authentication is independent of the first authentication and the sink receiving device remains uninfluenced by the second authentication. The bridge device includes an intermediate carrier device coupled to the source transmitting device and the sink receiving device. The method further includes transmitting a data stream having encrypted content from the source transmitting device to the bridge device.

Abstract: Embodiments of the invention are generally directed to video frame synchronization. An embodiment of a method includes receiving a first video data stream from a first source at a first port of a multi-port device, a first video frame of the first video data stream arriving at the first port at a first arrival time, and receiving a second video data stream from a second source at a second port of the multi-port device, a second video frame of the second video data stream arriving at the second port at a second arrival time. The method further includes determining an offset between the first arrival time and the second arrival time, determining one or more correction factors based at least in part on the offset, the one or more correction factors including a first correction factor for the first source, and sending a first command to the first source to modify a time of transmission by the first source of a third video frame following the first frame using the correction factor.

Abstract: Embodiments of the invention are generally directed to messaging to provide data link integrity. An embodiment of a method includes transmitting a data stream over a data link from a first device to a second device, the data stream including multiple frames, the data stream being transmitted in a first mode. The method further includes determining a data transmission mode change from the first mode to a second mode for the transmission of the data stream from the first device to the second device, generating mode packets, each mode packet including fields to define a plurality of mode elements, the fields of the mode packet being set to indicate the data transmission mode change, and transmitting the mode packets to the second device prior to implementing the data transmission mode change.

Abstract: Embodiments of the invention are generally directed to signaling for transitions between modes of data transmission. A embodiment of a method includes transmitting a data stream over a data link from a first device to a second device, the data stream operating in a first mode; determining that the data stream is to be changed from the first mode to a second mode; and transmitting a message from the first device to the receiver over a control link, the message indicating that the first device will change the data stream from the first mode to the second mode, the message being sent prior to the change to the second mode.

Abstract: Embodiments of the invention are generally directed detection of encryption utilizing error detection for received data. An embodiment of a method includes selecting a first port for foreground processing of a stream of data received at the first port, the stream of data including content data, and sampling a set of data received at a second port, the second port being not selected for foreground processing, the set of data including a data packet and error correction data. The method further includes performing background processing of the set of data, wherein the background processing includes decrypting data of the data packet and utilizing the error correction data to determine whether the data packet contains an error, and determining whether data received at the second port is encrypted based at least in part on the determination whether the data packet contains an error.

Abstract: A corona wire tape assembly for a corona charger apparatus, such wire tape assembly providing for a more durable corona wire which is kept substantially clean and which can readily be replaced. The corona wire tape assembly comprises at least one conductive wire adapted to generate ions when having a high voltage from an electrical potential source applied thereto. A flexible dielectric film, separable into lengths substantially corresponding to desired corona wire lengths, encases the conductive wire. The flexible dielectric film defines a first series of openings communicating with the conductive wire to expose the wire to facilitate ion generation and a second series of openings communicating with the conductive wire to facilitate electrical connection of the wire to an electrical potential source.

Abstract: A reproduction apparatus machine control system adapted to transmit control information to a plurality of process subsystems without transmission lines uses two-way transmission of signals which are free to propagate between the process subsystems and a controller system without confinement to an electrical wire, cable, or optical fiber system. An enclosure surrounds the process subsystems and the controller system for preventing the leakage of transmitting signals to the area outside the enclosure, aiding the propagation of said signals within the enclosure, and substantially preventing the entrance of interference signals into the region surrounded by the enclosure.

Abstract: Color printer combining two small, reciprocating scanning process modules on respective photoconductor drums in two adjacent print engines. The two print engines are operable in a parallel electrophotographic processing scheme wherein charging, exposure, and development of two color images are achieved on the respective photoconductive drum. Accordingly, a composite four-color image is printed by superimposed transfer of first and second two-color developed toner images onto a receiver.

Abstract: A rotatable wiper blade roller for cleaning residual toner particles from an image-bearing surface includes a shroud, a plurality of indexable wiper blades that each engage the image-bearing surface at an angle of 60.degree. to 85.degree. defined in the direction of particle removal by the cleaning edge of each such blade and the image-bearing surface, that are each cleaned secondarily by an intermittently rotatable fur brush that is completely out of contact with the image-bearing surface.

Abstract: A toner concentration monitor includes a polarized dielectric member which, when dipped into a development mixture of carrier and toner particles, provides an accurate indication of the toner concentration of the mixture by the amount of toner particles which adhere to the member. The polarized dielectric member is preferably an electret.

Abstract: A sorter mechanism for receiving and stacking discrete sheets in a preselected order. A plurality of bins are provided for receiving discrete sheets delivered to the bins with a given side facing in a particular orientation. The bins, each of which have oppositely disposed first and second sheet supporting members, are positionable so as to support the sheets with the given side facing the first sheet supporting members when the bins are in a first position and with the given side facing the second sheet supporting members when the bins are in the second position. Sheets fed along a predetermined path to the sorter mechanism are directed into selective bins, the bins being selectively positioned in either of the mentioned positions dependent upon the original orientation of the given sheet side in the predetermined path and the desired final order of the sheets being stacked.