Robert S Weinstein

US Patent:

6445519, Sep 3, 2002

Filed:

Dec 28, 1999

Appl. No.:

09/473545

Inventors:

Robert Edward Weinstein - Louisville CO
Michael Dominic Schaff - Longmont CO

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 502

US Classification:

360 25, 360 46

Abstract:

The method and apparatus herein identifies baseline instability events occurring within a magneto-resistive head. The method commences by capturing a signal average amplitude of a signal emanating from the head. The signal average amplitude is used to set a threshold, the transcendence of which indicates a baseline instability event. Finally, each baseline instability event is counted. The apparatus includes an envelope detector, which captures the signal average amplitude. A comparator unit, operably connected to the envelope detector, uses a threshold based upon the signal average amplitude, and sets a flag whenever the head signal exceeds the threshold. Finally, a counter unit increments its count total each time the flag is set. The counting unit may employ timing control, meaning that it will only increment its total if the flag is set when a clock signal triggers the counter unit to test the flag to decide whether or not to increment.

US Patent:

6898033, May 24, 2005

Filed:

Dec 20, 2001

Appl. No.:

10/028003

Inventors:

Robert Edward Weinstein - Louisville CO, US
Elias Glavinas - Superior CO, US
Timothy Ray Mason - Longmont CO, US
Randall Lee Pacek - Niwot CO, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B027/36
G11B005/09

US Classification:

360 31, 360 53

Abstract:

A procedure for estimating bit error rate (BER) for disc media in a disc drive is disclosed. Initially, the BER estimation procedure writes random data to specified tracks on the disc media. The procedure then reads the specified tracks over predefined time intervals to determine a BER for the disc media at the termination of each interval. Using the determined bit error rates, the procedure extrapolates the BER values to generate a decay graph representative of a BER slope over the time period comprising the time intervals. The decay graph is then used to estimate BER for the disc media at a predetermined time, such as the end of the expected life of the disc drive.

US Patent:

8438652, May 7, 2013

Filed:

Mar 23, 2007

Appl. No.:

11/728320

Inventors:

Robert E. Weinstein - Berthoud CO, US
Monty A. Forehand - Loveland CO, US

Assignee:

Seagate Technology LLC - Cupertino CA

International Classification:

G06F 7/04

US Classification:

726 27

Abstract:

A data storage device in which access to user data is restricted. The data storage device includes a data memory having memory locations that store user data. The device also has a program memory. The program memory includes first program code that enables a user to create a first device security ID and thereby restrict access to the stored data. Second program code, also included in the program memory, is capable of receiving a security command and comparing a second device security ID associated with the received security command to a stored security key. If the second device security ID and the stored security key correspond, then authentication with the first device security ID is bypassed and access is provided to the stored data.

US Patent:

20110080670, Apr 7, 2011

Filed:

Oct 1, 2009

Appl. No.:

12/571959

Inventors:

Mark Anthony Gubbins - Kiltoy, IE
Robert William Lamberton - Limavady, IE
Robert Edward Weinstein - Berthoud CO, US
James Joseph Touchton - Boulder CO, US

Assignee:

SEAGATE TECHNOLOGY, LLC - Scotts Valley CA

International Classification:

G11B 21/02
G11B 5/127

US Classification:

360 75, 360110, G9B 504, G9B 21003

Abstract:

The presently disclosed technology teaches integrating disc drive electronics into a transducer head. Decreased electrical transit times and data processing times can be achieved by placing the electronics on or within the transducer head because electrical connections may be made physically shorter than in conventional systems. The electronics may include one or more of a control system circuit, a write driver, and/or a data buffer. The control system circuit generates a modified clock signal that has a fixed relation to phase and frequency of a bit-detected reference signal that corresponds to positions of patterned bits on the disc. The write driver writes outgoing data bits received from an external connection to off-head electronics directly to the writer synchronized with the modified clock signal. The data buffer stores and converts digital data bits sent from the off-head electronics to an analog signal that is synchronized with the modified clock signal.

US Patent:

48515558, Jul 25, 1989

Filed:

Oct 25, 1984

Appl. No.:

6/664728

Inventors:

Robert M. Weinstein - Mahwah NJ

Assignee:

Scientific Design Company, Inc. - Little Ferry NJ

International Classification:

C07D30102

US Classification:

549518

Abstract:

An alkylene oxide, e. g. ethylene oxide, is prepared from the corresponding alkylene carbonate, e. g. ethylene carbonate, in the presence of an effective amount of a quaternary arsonium halide. The quaternary arsonium halides are also effective catalysts for the reverse reaction, that is, to form alkylene carbonates from the corresponding epoxide and carbon dioxide.

US Patent:

59397993, Aug 17, 1999

Filed:

Jul 16, 1997

Appl. No.:

8/893350

Inventors:

Robert E. Weinstein - Louisville CO

Assignee:

Storage Technology Corporation - Louisville CO

International Classification:

H02J 906

US Classification:

307 64

Abstract:

Power is supplied to a load from either a first power source or a second power source. A transfer switch determines which of the power sources provides the power to the load. A switch control detects a loss in the power provided by a first power source and signals the transfer switch to switch to a second power source. A small energy storage device provides power to the load, during the switch from the first power source to the second power source.

US Patent:

57345317, Mar 31, 1998

Filed:

Oct 31, 1995

Appl. No.:

8/550872

Inventors:

J. Lamar Nix - Boulder CO
Robert E. Weinstein - Louisville CO

Assignee:

Quantum Peripherals Colorado, Inc. - Louisville CO

International Classification:

G11B 539

US Classification:

360113

Abstract:

Disclosed is an MR head, and the method of making the same, which has a pole/shield. In the preferred embodiment, the pole side of the pole/shield is constructed such that it has a length that is approximately equal to the length of the pole, and a shield side that is approximately the length of a shield. Through this construction, the MR element, which is disposed between the shield side and the shield, is fully shielded during a read operation. Additionally, the flux lines generated during a write operation approximate the length of the pole so that excessive fringing does not occur. As a result of the smaller flux lines generated between the pole and the pole side of the pole/shield, data may be more densely packed on the disk used in conjunction with the MR head.

US Patent:

20200365176, Nov 19, 2020

Filed:

Aug 4, 2020

Appl. No.:

16/985038

Inventors:

- Fremont CA, US
Robert William Lamberton - Limavady, IE
Robert Edward Weinstein - Berthoud CO, US
James Joseph Touchton - Boulder CO, US

International Classification:

G11B 5/02
B82Y 10/00
G11B 5/31
G11B 5/74
G11B 20/10

Abstract:

The presently disclosed technology teaches integrating disc drive electronics into a transducer head. Decreased electrical transit times and data processing times can be achieved by placing the electronics on or within the transducer head because electrical connections may be made physically shorter than in conventional systems. The electronics may include one or more of a control system circuit, a write driver, and/or a data buffer. The control system circuit generates a modified clock signal that has a fixed relation to phase and frequency of a bit-detected reference signal that corresponds to positions of patterned bits on the disc. The write driver writes outgoing data bits received from an external connection to off-head electronics directly to the writer synchronized with the modified clock signal. The data buffer stores and converts digital data bits sent from the off-head electronics to an analog signal that is synchronized with the modified clock signal.