David B Stevenson

US Patent:

55088120, Apr 16, 1996

Filed:

Apr 1, 1994

Appl. No.:

8/222603

Inventors:

David K. Stevenson - San Francisco CA
Henry N. Kannapell - Gainesville GA
Lawrence F. Heyl - Mountain View CA

Assignee:

Apple Computer, Inc. - Cupertino CA

International Classification:

H04N 979
H04N 700
H04N 1100

US Classification:

358310

Abstract:

A system for processing and recording digitized component television signals onto analog video tape includes a digital color transformation matrix for generating a digital luminance signal, a first digital chrominance signal, and a second digital chrominance signal. The signals are then sample rate reduced, interleaved, and stored in a storage subsystem, which may include a disk array. The storage subsystem allows a constant rate, uninterrupted data stream to be produced. To record the signals onto video tape, the signal data is read from the storage subsystem and separated. A series of digital signal processing elements, coupled to the digital luminance signal (read from the storage subsystem), are used to generate a digital filtered and frequency modulated luminance signal. A second series of digital signal processing elements, coupled to the first and second digital chrominance signals (also read from the storage subsystem), are used to generate a digital low pass filtered and amplitude modulated composite chrominance signal. These signals are combined, then converted into an analog composite recording signal compatible with a predetermined VCR standard.

US Patent:

20220347135, Nov 3, 2022

Filed:

Mar 20, 2020

Appl. No.:

17/440178

Inventors:

- Oakland CA, US
- Stanford CA, US
Ronald Wong - San Carlos CA, US
David Stevenson - Stanford CA, US

Assignee:

The Regents of the University of California - Oakland CA
The Leland Stanford Junior University - Stanford CA

International Classification:

A61K 31/192
A61K 31/573
A61K 31/167
A61K 31/353
A61K 31/19
A61K 31/546
A61K 31/222
A61K 31/4402
A61K 31/4439
A61K 31/438
A61K 31/4035
A61K 31/43
A61K 31/135
A61P 15/06

Abstract:

Spontaneous preterm birth (sPTB) is premature delivery prior to 37 weeks of pregnancy and is a leading cause of infant mortality worldwide. sPTB is associated with a unique gene expression profile. Identified herein are numerous safe and proven therapeutic compositions used for unrelated indications that have the biological effect of reversing, in part, the gene expression profile of sPTB and which can be used in preventative or interventional treatments to prevent, delay, or ameliorate sPTB. The repurposed drugs include several Class A and Class B therapeutics that are regarded as safe or low risk in pregnant subjects.