Steven S Chan

7844253, Nov 30, 2010

Oct 19, 2007

11/875803

Steven S. Chan - Fremont CA, US
George C. Huang - Los Altos Hills CA, US

Future Dial Inc. - Sunnyvale CA

H04M 1/66

455410, 455301, 4555755, 455106, 135139

A method and apparatus to use a shielded enclosure for exchanging secure data. One embodiment comprises an enclosure formed of electromagnetically shielding material that prevents an electromagnetic field from entering an interior of the enclosure or emitting from the interior of the enclosure, the enclosure sized to house a mobile electronic device; a receiver within an interior of the enclosure to receive data transferred wirelessly from a mobile electronic device placed within the enclosure; and a hardware interface having a first end external to the enclosure and a second end within the interior of the enclosure and coupled to the antenna, the hardware interface to transfer data wirelessly received by the receiver to a separate device exterior to the enclosure.

20020174436, Nov 21, 2002

Dec 17, 2001

10/025849

George Wu - Oakland CA, US
Steven Chan - San Francisco CA, US
Ronald Tamura - Fremont CA, US
Elizabeth Shoemaker - Fostser City CA, US
Tze-Yee Szeto - Santa Cruz CA, US

H04N007/173

725/087000, 725/101000

A system for providing on demand responses to consumer impulses produced by a demand stimulus includes a computer processing system and content databases accessible by the computer-processing system having stored stimulus responses corresponding to a plurality of consumer demand stimuli in at least two categories of demand stimuli. A real-time inquiry response system associated with the computer processing system receives inquiries provided by a consumer and identifies the content category with which the consumer inquiry is associated. The computer processing system correlates consumer inquiries received by the real-time inquiry response system with stimulus responses stored in the content database based on the content category identified by the inquiry response system, so that the real-time consumer response system can return to the consumer, in real time, a stored stimulus response which correlates to the consumer inquiry. Categories of demand stimuli can include broadcast and non-broadcast information, and can include a variety of information categories or sub-categories such as music, advertisements, and scheduled events in respect to which a consumer may desire information or make a purchase.

20050020303, Jan 27, 2005

May 12, 2004

10/844771

Steven Chan - Fremont CA, US

H04M001/00

455556100

A mobile communication device including an integrated stylus input unit to input data into the device, and an interface to wirelessly transmit data. In one embodiment, the integrated stylus is a handwriting stylus input device to input data by moving the stylus over a substantially flat surface. In one embodiment, the stylus includes a motion sensor embedded in an antenna extending from the device.

47376708, Apr 12, 1988

Nov 9, 1984

6/670454

Steven S. Chan - Fremont CA

LSI Logic Corporation - Milpitas CA

H03K 513

307602

A circuit (40) constructed in accordance with this invention includes a ring oscillator (25) to provide a signal which is dependent on the propagation delays of the inverters (33, 34, 35) comprising the ring oscillator, therefore the frequency of the ring oscillator is inversely dependent upon the propagation delays of the inverter comprising the ring oscillator. Means (37) are provided to determine the propagation delay introduced by the components in the ring oscillator by measuring the frequency of the output signal produced by the ring oscillator which provides a signal to a multiplexer (36) which selects among a number of preset delay components (26) those components which are necessary to ensure that the propagation delay caused by the circuitry (not shown) connected to the input lead (21) of the circuit constructed in accordance with this invention plus the propagation delay introduced by the selectable delay elements is nearly a constant propagation delay.

48453900, Jul 4, 1989

Jan 11, 1988

7/141862

Steven S. Chan - Fremont CA

LSI Logic Corporation - Milpitas CA

H03K 513
H03K 5159

307602

A circuit (40) constructed in accordance with this invention includes a ring oscillator (25) to provide a signal which is dependent on the propagation delays of the inverters (33, 34, 35) comprising the ring oscillator, therefore the frequency of the ring oscillator is inversely dependent upon the propagation delays of the inverter comprising the ring oscillator. Means (37) are provided to determine the propagation delay introduced by the components in the ring oscillator by measuring the frequency of the output signal produced by the ring oscillator which provides a signal to a multiplexer (36) which selects among a number of preset delay components (26) those components which are necessary to ensure that the propagation delay caused by the circuitry (not shown) connected to the input lead (21) of the circuit constructed in accordance with this invention plus the propagation delay introduced by the selectable delay elements is nearly a constant propagation delay.

54427479, Aug 15, 1995

Sep 27, 1993

8/127219

Steven S. Chan - Fremont CA
Miles S. Simpson - San Jose CA
Scott A. Kimura - Saratoga CA

AuraVision Corporation - Fremont CA

G06F 1200

395164

A multimedia video processor chip for a personal computer in employs a multi-port central cache memory to queue all the incoming data to be stored in a DRAM and all the outgoing data being retrieved from the DRAM. Such a cache memory is used in one of several modes in which the cache memory is partitioned by cache boundaries into different groups of storage areas. Each storage area of the cache is dedicated to storing data from a specific data source. The cache boundaries are chosen such that, for a given mode, the storage areas are optimized for worst case conditions for all data streams.

44620519, Jul 24, 1984

Apr 2, 1982

6/365085

Steven S. Chan - Fremont CA

Ampex Corporation - Redwood City CA

G11B 509

360 44

To decode a binary signal without regard to the speed at which it is read, each transition in the binary signal is detected, and the time lapse between successive transitions is determined to thereby establish the length of a pulse in the binary signal. The length of one pulse is compared with that of the immediately preceding bit cell to determine whether their lengths are approximately the same or vary by a factor of approximately 2. If the two compared lengths are approximately the same, it is recognized that there is no change in the information conveyed by the signal and therefore the binary state of the most recently detected pulse is representative of the previously established binary state of the signal. However, if the pulse has a duration of approximately one half that of the preceding bit cell, a change in the state of the binary information being conveyed is recognized, and an appropriate indication is provided to signal such change. A multiplexing technique is employed to simultaneously decode a number of signals in this manner.

45009333, Feb 19, 1985

Apr 2, 1982

6/364922

Steven S. Chan - Fremont CA

Ampex Corporation - Redwood City CA

H03K 1324
G11B 3100

360 69

A universal interface unit for providing output signals in any one of a plurality of different signal formats stores information relating to each of the different available formats. When signals are to be provided to a particular device, personality data regarding the device enables the particular signal format requirements of the device to be read from the stored information. A signal processor responsive to this information generates output signals in that format. The output signals are transmitted to the device through a switching circuit that is appropriately connected to the device to provide the proper polarity.