Steve C Chen

US Patent:

6357023, Mar 12, 2002

Filed:

Oct 30, 2000

Appl. No.:

09/702017

Inventors:

Ramon S. Co - Trabuco Canyon CA
Steve Si-Yu Chen - San Jose CA
Fred Yen Kong - Irvine CA
Thang Nguyen - Santa Ana CA

Assignee:

Kingston Technology Co. - Fountain Valley CA

International Classification:

H02H 305

US Classification:

714 42, 714718

Abstract:

Memory modules are tested using a test assembly with a personal computer (PC) motherboard. The motherboard is mounted upside-down with its solder-side up to a metal plate using standoffs. A memory-module socket on the motherboard is removed. An opening is made in the metal plate above the removed socket. A well is attached to the metal plate at the opening. The well supports a test adaptor board below the metal plate so that the test adaptor board has a closer spacing to the motherboard than does the metal plate. The test adaptor board has a test socket that receives a module being tested. Pins from the test adaptor board are plugged into the holes of the removed socket on the motherboard, but mounted on the reverse, solder side of the motherboard rather than the component side. The cables, components, and expansion boards of the motherboards are hidden below the metal plate and motherboard, and can be cooled without cooling the memory module in the test socket. A top plate or air guide can be added above the metal plate to blow hot air on the memory module being tested in the test socket, while the cooling air is blown on the motherboard.

US Patent:

6400759, Jun 4, 2002

Filed:

Jun 30, 1997

Appl. No.:

08/884956

Inventors:

Young Way Liu - La Mirada CA
Steve Chen - San Jose CA

Assignee:

Integrated Telecom Express, Inc. - San Jose CA

International Classification:

H04B 138

US Classification:

375222

Abstract:

A device or interface driver is provided for permitting an operating system to utilize, configure and control a software modem having forward compatible and expandable functionality. In a preferred embodiment, the operating system is a Windows based system running on a host processing system such as a personal computer, and the modem is compatible with standards promulgated for ADSL. Conventional voice band modem control commands are also supported, so that the present invention for ADSL based modems is nevertheless compatible with existing modem applications programs. The new driver manages control information for configuring the bandwidth to be used in a data link established through a channel with an upstream transciever during an initialization process, and serves as a data pump for the software modem. The control information may be self-determined by a user of the host processing system or alternatively, automatically sensed, configured and monitored by such processing system.

US Patent:

6415397, Jul 2, 2002

Filed:

Sep 13, 2000

Appl. No.:

09/660714

Inventors:

Ramon S. Co - Trabuco Canyon CA
Steve Si-Yu Chen - San Jose CA
Fred Yen Kong - Irvine CA
Thang Nguyen - Santa Ana CA

Assignee:

Kingston Technology Company - Fountain Valley CA

International Classification:

H02H 305

US Classification:

714 42, 714718

Abstract:

A test station for testing memory modules uses multiple personal computer (PC) motherboards for performing functional tests on the modules. The motherboards are mounted upside-down with the solder-side up at the desktop level of the test station frame. One or more of the memory-module sockets on each motherboard is removed. A test adaptor board is plugged into the holes of the removed socket, but mounted on the reverse, solder side of the motherboard rather than the component side. The test adaptor board has a test socket that receives a module being tested. An overhead robotic arm picks up memory modules from an input tray and inserts them into test sockets for testing by the motherboards. Since the cables, components, and expansion boards of the motherboards are hidden below the solder-side surface of the motherboards, while the test adaptor board is above, the overhead robotic arm can easily navigate to the test socket without obstruction. Modules that pass are inspected in transit when the robotic arm holds the module in front of a camera that sends images to an image inspection processor.

US Patent:

20010007574, Jul 12, 2001

Filed:

Dec 19, 2000

Appl. No.:

09/741748

Inventors:

Young Liu - La Mirada CA, US
Steve Chen - San Jose CA, US

International Classification:

H04B001/38

US Classification:

375/219000, 375/222000

Abstract:

A high speed communications system is provided which uses a selectable, desirable portion of the total available bandwidth of a transmission channel. In a preferred embodiment, the invention is an ADSL compatible modem which selects a sub-set of the available downstream DMT sub-channels based on an evaluation of such sub-channels by appropriate signal processing circuitry. An analog front end (AFE) contains sub-band filtering causes an upstream transceiver to use only this selected number of available sub-channels for downstream data transmission. This reduces hardware costs and complexity while still preserving compatibility with applicable ADSL standards and providing a high speed data link. The target data rate of the modem can be further enhanced to the point of achieving fill protocol capability by increasing or upgrading the AFEs, and/or the signal processing circuitry in order to increase the number of processable transmitted downstream sub-channels.

US Patent:

60650605, May 16, 2000

Filed:

Jun 30, 1997

Appl. No.:

8/884958

Inventors:

Young Way Liu - La Mirada CA
Steve Chen - San Jose CA

Assignee:

Integrated Telecom Express - Santa Clara CA

International Classification:

G06F 15163

US Classification:

709233

Abstract:

A high speed modem is provided which targets the use of a selectable, desirable portion of the total available bandwidth of a channel for achieving a data rate which nevertheless far exceeds that of conventional voice-band modems. In a preferred embodiment, the invention is implemented in an Asymmetric Digital Subscriber Loop (ADSL), and the nominal data rate is achieved using an analog front end (AFE) with subband filtering which causes an upstream transceiver to use only a selected number of available sub-channels for downstream data transmission and allows slower sampling rate for the AFE. The data rate of the modem is increased in a multiplicative fashion through modular expansion of a bank of AFEs to increase the number of transmitted downstream sub-channels.

US Patent:

61283355, Oct 3, 2000

Filed:

Jun 30, 1997

Appl. No.:

8/884957

Inventors:

Young Way Liu - La Mirada CA
Steve Chen - San Jose CA

Assignee:

Integrated Telecom Express - Santa Clara CA

International Classification:

H04B 138

US Classification:

375220

Abstract:

A high speed software modem is described which uses a selectable, desirable portion of the total available bandwidth of a transmission channel. In a preferred embodiment, the invention is implemented in a personal computer connected to an upstream transceiver through a channel supporting an Asymmetric Digital Subscriber Loop (ADSL) standard. The achievable target data rate of the modem is based on the capabilities of an analog front end (AFE) used in the modem, and a host processor within such personal computer. In particular, the modem AFE contains subband filtering which causes an upstream transceiver to use only a selected number of available sub-channels for downstream data transmission. The data rate of the modem is increased by upgrading the AFE or the host processor in order to increase the number of processable transmitted downstream sub-channels.

US Patent:

60921226, Jul 18, 2000

Filed:

Jun 30, 1997

Appl. No.:

8/884979

Inventors:

Young Way Liu - La Mirada CA
Steve Chen - San Jose CA

Assignee:

Integrated Telecom Express - Santa Clara CA

International Classification:

G06F 15163

US Classification:

709277

Abstract:

A high speed modem is provided which uses a selectable, desirable portion of the total available bandwidth of a transmission channel. In a preferred embodiment, the invention is incorporated in a dedicated hardware circuit which is connected on one end to a data processor and on the other end to an upstream transceiver through a channel supporting an Asymmetric Digital Subscriber Loop (ADSL) standard. The achievable target data rate of the modem is based on the capabilities of an analog front end (AFE) used in the modem, and a signal processor within the dedicated hardware. In particular, the modem AFE contains subband filtering which causes an upstream transceiver to use only a selected number of available sub-channels for downstream data transmission. The data rate of the modem is increased by upgrading the AFE or the signal processor in order to increase the number of processable transmitted downstream sub-channels.

US Patent:

62529005, Jun 26, 2001

Filed:

Jun 30, 1997

Appl. No.:

8/884895

Inventors:

Young Way Liu - La Mirada CA
Steve Chen - San Jose CA

Assignee:

Integrated Telecom Express, Inc. - Santa Clara CA

International Classification:

H04B 138

US Classification:

375219

Abstract:

A high speed communications system is provided which uses a selectable, desirable portion of the total available bandwidth of a transmission channel. In a preferred embodiment, the invention is an ADSL compatible modem which selects a sub-set of the available downstream DMT sub-channels based on an evaluation of such sub-channels by appropriate signal processing circuitry. An analog front end (AFE) contains sub-band filtering causes an upstream transceiver to use only this selected number of available sub-channels for downstream data transmission. This reduces hardware costs and complexity while still preserving compatibility with applicable ADSL standards and providing a high speed data link. The target data rate of the modem can be further enhanced to the point of achieving full protocol capability by increasing or upgrading the AFEs, and/or the signal processing circuitry in order to increase the number of processable transmitted downstream sub-channels.