Daniel C Kong

US Patent:

8054221, Nov 8, 2011

Filed:

Nov 15, 2010

Appl. No.:

12/946813

Inventors:

Anh Luong - Santa Clara CA, US
Daniel C. Kong - Mountain View CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G01S 19/23

US Classification:

34235762

Abstract:

A portable user device may provide Global Positioning System (GPS) services. The device may include a GPS receiver. The GPS receiver may provide accurate information about the current location of the device. A user may use the device to perform tasks. Certain tasks may generate excess heat or de-generate heat that causes the GPS receiver to perform unsatisfactorily. Methods are provided that can test GPS receiver performance during acquisition mode and during tracking mode. During testing, the GPS receiver may be given a predetermined amount of time to acquire a GPS fix. The GPS receiver may be tested repeatedly to acquire successive GPS fixes. After a desired number of tests are performed, a success rate may be calculated. If the success rate is satisfactory, the GPS receiver satisfies design criteria. If the success rate is not satisfactory, the GPS receiver may be reconfigured with new settings.

US Patent:

20130149972, Jun 13, 2013

Filed:

Dec 12, 2011

Appl. No.:

13/323709

Inventors:

Anh Luong - Santa Clara CA, US
Daniel C. Kong - Mountain View CA, US

International Classification:

H04W 24/00

US Classification:

455 6714

Abstract:

Wireless communications circuitry such as radio-frequency power amplifiers may be tested using a test station. A test station may include a test host and a test unit coupled to the test host. The power amplifiers may be configured to transmit radio-frequency signals in allocated resource blocks within a particular radio channel. The power amplifier circuits may be configured to transmit signals utilizing only an allocated portion of its total available resource blocks so that the transmitted signals are output at maximum power levels. The power amplifiers may transmit in resource blocks near a low channel edge during a first time period and may transmit in resource blocks near a high channel edge during a second time period. The test unit may receive the signals generated from the power amplifiers and may perform desired radio-frequency measurements (e.g., test unit may measure adjacent channel leakage radio, signal-to-interference ratio, error vector magnitude, etc.).

US Patent:

20180035300, Feb 1, 2018

Filed:

Aug 1, 2016

Appl. No.:

15/225450

Inventors:

- Cupertino CA, US
Daniel C. Kong - Mountain View CA, US
Ali Ghoreishi - Cupertino CA, US

International Classification:

H04W 16/14
H04B 1/04
H04B 1/00
H04B 7/04
H04B 1/3827

Abstract:

Methods and devices useful in concurrently receiving and supporting Wireless Fidelity (Wi-Fi) and Long Term Evolution Licensed Assisted Access (LTE-LAA) wireless data signals are provided. By way of example, an electronic device includes a network interface configured to allow the electronic device to communicate over one or more channels of a wireless network, and a transceiver configured to transmit data and to receive data over the one or more channels. The transceiver is configured to receive licensed cellular signals and unlicensed cellular signals over the one or more channels.