Paul H Tran

US Patent:

6691203, Feb 10, 2004

Filed:

Aug 30, 2000

Appl. No.:

09/652254

Inventors:

Joseph Chen - Cupertino CA
Li-Chun Robert Chen - Fremont CA
Lam Dang - Cupertino CA
Paul Phuc Tran - Milpitas CA
Tom Vu - San Jose CA

Assignee:

Mosel Vitelic Corporation - San Jose CA

International Classification:

G06F 1200

US Classification:

711 4, 711159, 714 52, 360 32, 360 48, 369 3022, 369 3023, 369 4719

Abstract:

The present invention provides an integrated controller to process both optical reads and optical writes of multiple optical media. The integrated controller includes a host interface; a buffer manager coupled to the host interface; an embedded memory coupled to the buffer manager; an integrated encoding/decoding engine coupled to the buffer manager; a data channel interface coupled to the integrated encoding/decoding engine; and an integrated servo/recording processor coupled to the integrated encoding/decoding engine and the data channel interface, where the integrated servo/recording processor includes a set of write strategies. The present invention provides a controller which integrates the functionality of the conventional controllers into an integrated processor. With the controller in accordance with the present invention, a single drive may be provided which can read CD-based and DVD-based formats, read and write to Write Once Media, and read and write to Rewritable Media. The architecture of the controller is designed such that its manufacture is cost effective and a performance penalty for the host does not occur.

US Patent:

6693867, Feb 17, 2004

Filed:

Jun 15, 2000

Appl. No.:

09/595423

Inventors:

Paul Thanh Tran - Milpitas CA
Shashank Sharan - Milpitas CA

Assignee:

Mosel Vitelic Corporation - San Jose CA

International Classification:

G11B 700

US Classification:

369 5912, 369 4748

Abstract:

The present invention provides a method and system for window realignment to correct the data frame boundaries of data from an optical media. The present invention includes: determining if a sync pattern for a data frame is within a sync window; opening an extended sync window, if the sync pattern for the data frame is not within the sync window; determining if the sync pattern for the data frame is within the extended sync window; and realigning the sync window to the sync pattern in the extended sync window, if the sync pattern is within the extended sync window. The present invention utilizes an extended sync window to realign the sync window when the number of missing sync patterns in a data stream has exceeded a threshold number. In the preferred embodiment, the width of the extended sync window and the threshold number are programmable. In this manner, the sync window can be realigned before shifting of the data renders the data uncorrectable.

US Patent:

6694458, Feb 17, 2004

Filed:

Sep 7, 2000

Appl. No.:

09/656502

Inventors:

Paul Tran - Milpitas CA

Assignee:

Mosel Vitelic Corporation - San Jose CA

International Classification:

G06F 1100

US Classification:

714 48, 714 6, 714 52, 369 32, 369 471

Abstract:

The present invention provides a method and system for providing a header search in a data read from an optical medium. The method includes opening a search window with a size greater than one sector; finding at least one valid header within the search window; and locating a target sector based upon the at least one valid header. The size of the window is programmable. Optionally, more than one valid header can be required to be found before they are used as the reference, for the purpose of increasing the reliability of the reference. The number of required valid headers is also programmable. Buffering of the data then begins at the target sector found based on the reference. The header of this target sector is then checked for validity. If the header is not the target, then the header search may be restarted without the need to redo the data read. The header search scheme is applicable for multiple optical data formats.

US Patent:

6775721, Aug 10, 2004

Filed:

May 11, 2000

Appl. No.:

09/569370

Inventors:

Paul Thanh Tran - Milpitas CA

Assignee:

Promos Technologies Inc. - Hsing-Chu

International Classification:

G06F 1300

US Classification:

710 52, 710 4, 710 20, 710 21, 710 33, 710 48, 710 53, 710260

Abstract:

The present invention provides an improved method and system for link detection and handling. The method includes detecting one of the plurality of link sectors; generating an interrupt signal; determining a buffer method selection; buffering the plurality of data sectors only, if a link skip buffer method is selected; and buffering the plurality of data sectors and the plurality of link sectors, except for a link block, and allocating a sector in a buffer for the link block, if a link buffer method is selected. The present invention provides a hardware approach to link sector detection and handling. Instead of passing the data to a system software prior to link sector detection, the method and system in accordance with the present invention performs the link sector detection in the controller hardware. When the controller detects the link sectors, it automatically either skips or buffers the link sectors depending upon the configuration of the controller. By performing the link sector detection in hardware, significant processing time is saved.

US Patent:

6868050, Mar 15, 2005

Filed:

Aug 15, 2000

Appl. No.:

09/639376

Inventors:

Paul Phuc Tran - Milpitas CA, US
Wei Qian - Sunnyvale CA, US

Assignee:

ProMOS Technologies Inc. - Hsing-Chu

International Classification:

G11B007/00
G11B005/09

US Classification:

369 475, 369 5325, 369 5911, 369 5921, 369 4434

Abstract:

The present invention provides a method and system for calibration of writing to an optical medium. The method includes: sampling marks in a calibration area of the optical medium; and converting the sampled marks into a digital format utilizing an ADC, the ADC also utilized by a servo control. The present invention provides a controller with an integrated servo and recording processor which allows a single ADC to be used for converting sample marks used in calibrating the writing to an optical media. No separate subsystem for converting sample marks is thus necessary. Less components are required, reducing the cost of manufacturing the controller. With less components, the risk of component failure is reduced as well.

US Patent:

6687199, Feb 3, 2004

Filed:

Jun 19, 2000

Appl. No.:

09/596861

Inventors:

Paul Thanh Tran - Milpitas CA
Wei Qian - Sunnyvale CA

Assignee:

Mosel Vitelic Corporation - San Jose CA

International Classification:

G11B 700

US Classification:

369 4414, 369 5921

Abstract:

The present invention provides a method and system for servo control in an optical drive. The method includes initiating an execution of a multiplier and accumulator controller (MAC) by a processor; and automatically calculating a transfer function by the MAC based upon a sample servo data. The present invention provides a servo control system which utilizes a MAC which is directly linked to the sample servo data. When a processor commands the MAC to execute, the MAC receives the sample servo directly from an Analog-to-Digital Converter (ADC); retrieves the corresponding accumulated sample servo data from a memory; calculates the transfer function; and stores the results back into the memory. The processor then accesses the memory to retrieve the result. Because the MAC is able to calculate the transfer function with minimal intervention from the processor, significant processing resources and time are saved.