ERIC MATHEW TREHUS
Pilots at Miradero Ave, San Jose, CA

6963954, Nov 8, 2005

Sep 19, 2001

09/957342

Eric Trehus - San Jose CA, US

Cisco Technology, Inc. - San Jose CA

G06F012/08, G06F013/04

711137, 711171, 711213

Address based prefetch logic varies prefetching according to address values in read requests. The address based prefetch logic can vary how much data is initially read into a prefetch buffer or when a prefetch buffer is refilled to an initial prefetch amount. One advantage of the address based prefetch logic is that prefetching and prefetch buffer refill rates are tuned for particular application. This is important since the system controller ordinarily does not know how much data the master is requesting beyond the first data phase. The requested read address is used as a hint to determine how much prefetching needs to occur. Over prefetching wastes memory bandwidth, and potentially adds latency to other masters sharing common busses. Under prefetching may cause the system controller that is acting as a PCI target to terminate the master's read request, thus wasting PCI bandwidth, adding latency.

5845087, Dec 1, 1998

Mar 4, 1996

8/610474

Eric M. Trehus - San Jose CA

Telebit Corporation - Chelmsford MA

G06F 1516

39520072

A zone filtering method and apparatus, finding particular utility in an AppleTalk (trademark of Apple Computing, Inc. ) internetwork, is disclosed. A network manager is able to hide zones and respective Network Visible Entities (NVE's) from nodes (routers and workstations) on branches of the AppleTalk internetwork through the use of zone filters. These nodes are thus unable to initiate communication with NVE's within the hidden zones. A zone filter is a list of zone names and an indication of whether access to the listed zones is permitted or denied. The port to which a zone filter is attached identifies which branch of the AppleTalk internetwork the zone filter applies to. A router according to the invention is capable of recognizing specific datagrams to which the zone filter is applied.

7082477, Jul 25, 2006

Apr 30, 2002

10/136203

Karthik M. Sadhasivam - Sunnyvale CA, US
Eric M. Trehus - San Jose CA, US
Anders K. Fung - Union City CA, US
Bin Liang - San Jose CA, US
Nicholas R. Leavy - Palo Alto CA, US

Cisco Technology, Inc. - San Jose CA

G06F 15/16

709246, 370392, 3703956

A method and apparatus for virtual application of features to electronic messages is disclosed. When a device applies a set of features to an electronic message, one or more of the features may be virtually applied instead of actually applied. For example, instead of encrypting a payload portion of a packet and adding an encryption header, the packet may not be encrypted. However, an appropriate encryption header may still be included in the packet such that the packet appears to have been encrypted when other features are applied. Prior to sending the packet, the payload portion is actually encrypted, such as by using a hardware accelerator. Some implementations may use a dual processor router, in which the input/output processor controls the hardware accelerator, the routing processor performs the virtual application of a feature, and prior to sending the packet the input/output processor actually applies the virtually applied feature.

2011000, Jan 13, 2011

Jul 7, 2009

12/499072

Michael C. Chen - San Jose CA, US
Gregory S. Mercurio - Campbell CA, US
Eric M. Trehus - San Jose CA, US

Cisco Technology, Inc. - San Jose CA

H04L 12/24, H04B 17/00

370252, 455 677, 455 412

In one embodiments, a method includes determining a current connection status of a first wireless device with respect to one or more second wireless devices configured to communicate wirelessly by a particular wireless communication protocol. The current connection status of the first wireless device potentially being that the first wireless device has scanned for and found one or more available ones of the second wireless devices to connect wirelessly to but has not yet having established a wireless connection to any one of them or potentially being that the first wireless device is currently attempting to establish a wireless connection to one of the available ones of the second wireless devices. The method includes communicating for presentation to a user at the first wireless device a scan-result indicator if the first wireless device has scanned for and found one or more available ones of the second wireless devices to connect wirelessly to but has not yet established a wireless connection to any one of them and a connection-attempt indicator if the first wireless device currently is attempting to establish a wireless connection to one of the available ones of the second wireless devices.

7062609, Jun 13, 2006

Sep 19, 2001

09/957563

Eric Trehus - San Jose CA, US

Cisco Technology, Inc. - San Jose CA

G06F 12/06, G06F 13/14

711141, 711133, 711163, 710313, 709236

A transfer type selector selects a transfer type used for maintaining cache coherency according to address values used for accessing memory and is programmable so that different transfer types can be selected for different applications. In one embodiment, a table has different address ranges each having associated transfer types. Transfer type selection logic selects one of the transfer types associated with the address range containing the address in a memory transaction request.

8102790, Jan 24, 2012

Apr 13, 2007

11/735186

Eric M. Trehus - San Jose CA, US

Cisco Technology, Inc. - San Jose CA

G08C 17/00

370311, 455574, 455 411, 370338

In one embodiment, when conditions are observed a wireless device keeps its radio circuitry powered down during a designated transmission window orchestrated by an associated Access Point (AP) for forwarding buffered broadcast and multicast data to reduce power consumption by the wireless device. The wireless device then temporarily powers up its radio circuitry to receive a beacon outside the designated transmission window. When the received beacon indicates buffered data, the wireless device transmits a request for a unicast transmission of the buffered data from the AP.

2012023, Sep 13, 2012

Mar 11, 2011

13/045919

Stephan Meier - Los Altos CA, US
John G. Favor - Scotts Valley CA, US
Evan Gewirtz - San Ramon CA, US
Robert Hathaway - Sunnyvale CA, US
Eric Trehus - San Jose CA, US

G06F 12/00

711154, 711E12001

A digital processor stores pointers of different sizes in memory. The processor, specifically, executes instructions to store a long or short pointer. Long pointers reference any address in the memory's logical address space, while short pointers merely reference any address in a subset of that space. However, short pointers are smaller in size as stored in memory than long pointers. Long pointers thus support relatively large address range capabilities, while short pointers use less memory. The processor also executes instructions to load a long or short pointer into the register file, and does so in a way that does not require the processor to distinguish between the different pointers when executing other instructions. Specifically, the processor converts long and short pointers into a common format for loading into the register file, and converts pointers in the common format back into long or short pointers for storing in the memory.

6898732, May 24, 2005

Jul 10, 2001

09/902827

Eric Mathew Trehus - San Jose CA, US
James Forman - Gilroy CA, US
Venkataraman Sukavanam - Milpitas CA, US

Cisco Technology, Inc. - San Jose CA

G06F011/00

714 11, 714 12, 714 48

A computing device having multiple masters. The device includes a set of masters and at least one target with at least one bus that provides connecting between the masters and the target. A system controller operates to quiesce masters selected from the set of masters in response to an error message. A system error processor handles the error condition after the selected masters have been quiesced.