Patents by Inventor Ramachandran Chundru

Ramachandran Chundru has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10444918
    Abstract: Touch sensor configurations for reducing electrostatic discharge events in the border area of a touch sensor panel is disclosed. Touch sensors (e.g., electrodes formed on the cover material and/or the opaque mask) can be susceptible to certain events such as arcing and discharge/joule heating, which may negatively affect touch sensor performance. Examples of the disclosure can include increasing the trace width, spacing, and/or thickness in the border area relative to the trace width, spacing, and/or thickness in the visible/active area along one or more sides of the touch sensor panel. In some examples, touch electrodes can be located exclusively in the visible/active areas along one or more sides of the touch sensor panel, while dummy sections can be included in both the border and visible/active areas. Additionally or alternatively, one or more gaps between adjacent touch electrodes in the border area or serpentine routing can be included.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: October 15, 2019
    Assignee: Apple Inc.
    Inventors: Wencong Zhu, Albert Lin, Alexander A. Penn, Ashray Vinayak Gogte, Chun-Hao Tung, Hao Zhang, Hui Zhou, John Z. Zhong, Steven P. Hotelling, Sudip Mondal, Sumant Ranganathan, Sunggu Kang, Ramachandran Chundru, Viswa B. Pilla
  • Patent number: 9972454
    Abstract: An electronic device includes a tactile switch assembly. The tactile switch assembly includes a tactile switch structure. A grounding structure can be included in an electrostatic discharge path in the tactile switch structure. The grounding structure can result in a shorter electrostatic discharge path that minimizes damage caused by an electrostatic discharge event. Additionally, different grounding connectors are disclosed that can attach to a grounded component in the electronic device and to a tactile switch bracket associated with the tactile switch assembly. The grounding connector provides a grounding connection to the tactile switch bracket.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: May 15, 2018
    Assignee: Apple Inc.
    Inventors: Sawyer I. Cohen, Tyler B. Cater, Ramachandran Chundru, Vivek Katiyar, Marwan Rammah, Ashutosh Y. Shukla
  • Patent number: 9369794
    Abstract: To avoid undesirable electrostatic discharge events while maintaining low leakage currents, earbuds may be provided with controlled electrostatic discharge paths. The discharge paths may include discrete components such as resistors or more distributed resistive components such as resistive elastomers. A resistive elastomer may be incorporated into an interior portion of an earbud between an earbud housing structure and a ground path. A resistive elastomer may also be used in forming an ear bud tip.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: June 14, 2016
    Assignee: APPLE INC.
    Inventors: Stanley Rabu, Ida Lo, Victor Tiscareno, Craig Lim, Ramachandran Chundru, Robert Steinfeld, Kurt Stiehl
  • Publication number: 20160063659
    Abstract: An electronic device may be provided with a housing such as a metal housing in which a display is mounted. Control circuitry in the electronic device such as a system-on-chip integrated circuit may produce image data. A display driver integrated circuit may receive the image data from the system-on-chip integrated circuit and may display the image data on the display. In the absence of electrostatic discharge, the display driver integrated circuit may operate normally and may generate a heartbeat signal. When disrupted due to electrostatic discharge, the display driver circuitry may cease production of the heartbeat signal. The system-on-chip integrated circuit can implement a watchdog timer. If the watchdog timer times out because the heartbeat signal is not received within a timeout period, the system-on-chip integrated circuit may reset the display.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 3, 2016
    Inventors: Mohammad Ali Jangda, Sang Y. Youn, Wei H. Yao, Hyunwoo Nho, Arthur L. Spence, Viswa B. Pilla, Axel B. Schumacher, Ramachandran Chundru
  • Patent number: 8993899
    Abstract: Various systems of an electronic deice and methods for manufacturing the same are provided. In some embodiments, a routing assembly is provided that may not only route a cable along a circuit board, but that may also shield and electronic component or secure an electronic component to the circuit board. In some other embodiments, there is provided a mechanism for electrically coupling two components of an electronic device that may also be visually appealing in the context of other portions of the electronic device.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: March 31, 2015
    Assignee: Apple Inc.
    Inventors: Shayan Malek, Benjamin J. Pope, Daniel W. Jarvis, Tang Yew Tan, Richard H. Dinh, Robert J. Steinfeld, Ramachandran Chundru
  • Publication number: 20140218606
    Abstract: Various systems of an electronic deice and methods for manufacturing the same are provided. In some embodiments, a routing assembly is provided that may not only route a cable along a circuit board, but that may also shield and electronic component or secure an electronic component to the circuit board. In some other embodiments, there is provided a mechanism for electrically coupling two components of an electronic device that may also be visually appealing in the context of other portions of the electronic device.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 7, 2014
    Applicant: Apple Inc.
    Inventors: Shayan Malek, Benjamin J. Pope, Daniel W. Jarvis, Tang Yew Tan, Richard H. Dinh, Robert J. Steinfeld, Ramachandran Chundru
  • Patent number: 8710376
    Abstract: Various systems of an electronic device and methods for manufacturing the same are provided. In some embodiments, a routing assembly is provided that may not only route a cable along a circuit board, but that may also shield an electronic component or secure an electronic component to the circuit board. In some other embodiments, there is provided a mechanism for electrically coupling two components of an electronic device that may also be visually appealing in the context of other portions of the electronic device.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 29, 2014
    Assignee: Apple Inc.
    Inventors: Shayan Malek, Benjamin John Pope, Daniel William Jarvis, Tang Tan, Richard Hung Minh Dinh, Robert Steinfeld, Ramachandran Chundru
  • Publication number: 20130287222
    Abstract: To avoid undesirable electrostatic discharge events while maintaining low leakage currents, earbuds may be provided with controlled electrostatic discharge paths. The discharge paths may include discrete components such as resistors or more distributed resistive components such as resistive elastomers. A resistive elastomer may be incorporated into an interior portion of an earbud between an earbud housing structure and a ground path. A resistive elastomer may also be used in forming an ear bud tip.
    Type: Application
    Filed: March 25, 2013
    Publication date: October 31, 2013
    Inventors: Stanley Rabu, Ida Lo, Victor Tiscareno, Craig Lim, Ramachandran Chundru, Robert Steinfeld, Kurt Stiehl
  • Patent number: 8428287
    Abstract: To avoid undesirable electrostatic discharge events while maintaining low leakage currents, earbuds may be provided with controlled electrostatic discharge paths. The discharge paths may include discrete components such as resistors or more distributed resistive components such as resistive elastomers. A resistive elastomer may be incorporated into an interior portion of an earbud between an earbud housing structure and a ground path. A resistive elastomer may also be used in forming an ear bud tip.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: April 23, 2013
    Assignee: Apple Inc.
    Inventors: Stanley Rabu, Ida Lo, Victor Tiscareno, Craig Lim, Ramachandran Chundru, Robert Steinfeld, Kurt Stiehl
  • Publication number: 20130048368
    Abstract: Various systems of an electronic device and methods for manufacturing the same are provided. In some embodiments, a routing assembly is provided that may not only route a cable along a circuit board, but that may also shield an electronic component or secure an electronic component to the circuit board. In some other embodiments, there is provided a mechanism for electrically coupling two components of an electronic device that may also be visually appealing in the context of other portions of the electronic device.
    Type: Application
    Filed: February 10, 2012
    Publication date: February 28, 2013
    Applicant: Apple Inc.
    Inventors: Shayan Malek, Benjamin John Pope, Daniel William Jarvis, Tang Tan, Richard Hung Minh Dinh, Robert Steinfeld, Ramachandran Chundru
  • Publication number: 20110007929
    Abstract: To avoid undesirable electrostatic discharge events while maintaining low leakage currents, earbuds may be provided with controlled electrostatic discharge paths. The discharge paths may include discrete components such as resistors or more distributed resistive components such as resistive elastomers. A resistive elastomer may be incorporated into an interior portion of an earbud between an earbud housing structure and a ground path. A resistive elastomer may also be used in forming an ear bud tip.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 13, 2011
    Inventors: Stanley Rabu, Ida Lo, Victor Tiscareno, Craig Lim, Ramachandran Chundru, Robert Steinfeld, Kurt Stiehl