Patents by Inventor Richard Tsai

Richard Tsai 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: 8150255
    Abstract: A method performed by an electronic camera in flash mode is as follows. A scene ambient lighting indication is obtained. An integration time interval and a flash pulse-on time interval for taking a picture is then set. The set integration time interval is shorter when the indication is bright than when the indication is dark; and the set flash pulse-on time interval is longer when the indication is bright than when the indication is dark. An image is captured using the set integration time interval and the set flash pulse-on time interval in accordance with an electronic rolling shutter (ERS). Other embodiments are also described and claimed.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: April 3, 2012
    Assignee: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20120075521
    Abstract: A camera shutter mechanism for covering and exposing an imaging sensor array is disclosed. The camera shutter mechanism includes a rotary motor, a crank mechanism, a cover, a guide, and a drive circuit. The rotary motor is coupled to the crank mechanism to rotate the crank mechanism about a central axis. The cover is coupled to the crank mechanism at a point away from the central axis. The drive circuit controls the rotary motor so that the cover moves back and forth repeatedly in a substantially linear motion along the guide between a shutter closed position and a shutter open position over the imaging sensor array. Other embodiments are also described and claimed.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 29, 2012
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20120057303
    Abstract: A thermal valve for controlling heat transfer between two electronic components is disclosed. The thermal valve includes a first thermally conductive strip that is secured to the first electronic component and a second thermally conductive strip that is secured to the second electronic component. The first strip and the second strip are located between the two electronic components. The first strip changes its shape toward making contact with the second strip in response to a temperature increase of the first electronic component, and the second strip changes its shape away from making contact with the first strip in response to a temperature increase of the second electronic component. Other embodiments are also described and claimed.
    Type: Application
    Filed: September 8, 2010
    Publication date: March 8, 2012
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20120013775
    Abstract: An image capture sharpening subsystem for a digital camera includes a capture sharpening processor and a memory that stores values for a capture sharpening amount. The values for the capture sharpening amount are a function of position on an image sensor of the digital camera. The capture sharpening processor receives a first value for a pixel in an image captured by the image sensor and a position value for the pixel on the image sensor. The capture sharpening processor determines a pixel sharpening amount from the values for the capture sharpening amount stored in the first memory according to the position value. The capture sharpening processor applies a capture sharpening process to the pixel to provide a second value for the pixel according to the pixel sharpening amount and stores the second value in a second memory that provides a sharpened version of the image captured by the image sensor.
    Type: Application
    Filed: July 15, 2010
    Publication date: January 19, 2012
    Applicant: APPLE INC.
    Inventor: Richard Tsai
  • Publication number: 20110317991
    Abstract: A method performed by an electronic camera in flash mode is as follows. A scene ambient lighting indication is obtained. An integration time interval and a flash pulse-on time interval for taking a picture is then set. The set integration time interval is shorter when the indication is bright than when the indication is dark; and the set flash pulse-on time interval is longer when the indication is bright than when the indication is dark. An image is captured using the set integration time interval and the set flash pulse-on time interval in accordance with an electronic rolling shutter (ERS). Other embodiments are also described and claimed.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 29, 2011
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Patent number: 8073324
    Abstract: Systems and methods are providing for aligning an accessory to an electronic device interface. In particular, some accessories such as optical filters and lens require specific alignment to operative properly. Using a first magnet array positioned around the periphery of the interface and a second magnet array positioned within the accessory, a user can position an accessory on the electronic device and rotate the accessory until the magnets of each array exert a force on an opposing magnet of the other array. By distributing the magnets in a manner that includes no repeating segments, only a single alignment of the accessory relative to the interface can allow the magnet arrays to be properly in opposition.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: December 6, 2011
    Assignee: Apple Inc.
    Inventor: Richard Tsai
  • Patent number: 8057412
    Abstract: An apparatus includes a frame having a substantially planar first portion and a substantially planar second portion. The first and second portions are spaced rigidly apart from each other in a substantially parallel orientation to define a passage that extends through the frame between the first portion and the second portion. The passage is dimensioned and configured to receive a hand. A central axis extends longitudinally through the passage. The apparatus further comprises a first pad and a second pad located on an exterior of the first portion of the frame and spaced apart from each other to provide a channel that extends longitudinally between the first pad and the second pad substantially orthogonal to the central axis. The channel may be configured to align with the spine where the first pad and the second pad are positioned to lie on opposing sides of the spine.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 15, 2011
    Inventor: Richard Tsai
  • Publication number: 20110211823
    Abstract: A method in a camera device having an image sensor and an electro-mechanical shutter mechanism is as follows. A constant drive current is applied to the shutter mechanism to close shutter at the end of a first exposure. Then, a decaying drive current is applied to the shutter mechanism during a readout interval for the first exposure. Other embodiments are also described and claimed. Other embodiments are also described and claimed.
    Type: Application
    Filed: May 13, 2011
    Publication date: September 1, 2011
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Patent number: 8000598
    Abstract: A lens assembly includes a brush-like baffle between the lens and a transparent cover. The baffle at least partially surrounds the lens to prevent stray light from entering and causing flare or other image artifacts. If the baffle does not entirely surround the lens structure, an adjustment mechanism may be provided to rotate the baffle so as to “tune” a flare reduction effect.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: August 16, 2011
    Assignee: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20110169026
    Abstract: A device to emit light includes a light emitting diode (LED) die and a light guide coupled to the LED die. The light guide includes a first material having a first index of refraction with a plurality of apertures arranged in a grid. A second material having a second index of refraction that is larger than the first index of refraction fills the plurality of apertures. Each aperture extends from a first end adjacent the LED die to a larger second end. The first end may be a circle of approximately 1 to 2 ?m in diameter. The distance between the first and second ends may be from approximately 10 to 20 ?m. Each aperture may be in the form of a frustrated cone having an included angle between the sides from approximately 3 to 7 degrees. The light guide may be formed on a transparent substrate.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 14, 2011
    Applicant: APPLE INC
    Inventor: Richard Tsai
  • Patent number: 7962031
    Abstract: Input from a user is received, to take a picture. A camera flash is signaled to produce multiple flash pulses during a single shutter cycle of the picture. The amplitudes of at least two of the flash pulses are different relative to each other. The picture is stored, including in its metadata information that describes the variable amplitude of the flash pulses that illuminated the scene when taking the picture. The information describing the variable amplitude of the flash pulses is used to deblur the picture. Other embodiments are also described and claimed.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: June 14, 2011
    Assignee: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20110123186
    Abstract: A method in a camera device having an image sensor and an electro-mechanical shutter mechanism is as follows. A constant drive current is applied to the shutter mechanism to close shutter at the end of a first exposure. Then, a decaying drive current is applied to the shutter mechanism during a readout interval for the first exposure. Other embodiments are also described and claimed. Other embodiments are also described and claimed.
    Type: Application
    Filed: November 25, 2009
    Publication date: May 26, 2011
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Patent number: 7949250
    Abstract: A method in a camera device having an image sensor and an electro-mechanical shutter mechanism is as follows. A constant drive current is applied to the shutter mechanism to close shutter at the end of a first exposure. Then, a decaying drive current is applied to the shutter mechanism during a readout interval for the first exposure. Other embodiments are also described and claimed. Other embodiments are also described and claimed.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: May 24, 2011
    Assignee: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20110102671
    Abstract: A device to display moving images with a picture-in-picture effect. A memory that stores values is coupled to a display screen. The display screen displays images according to the values stored in the memory. A first receiver receives a first sequence of images and stores image data in a first portion of the memory. A second receiver receives a second sequence of images and stores image data in a second portion of the memory that is different than the first portion of the memory. The memory may be a multi-ported memory and the first and second receivers store image data independently of one another. The memory may include independent first and a second memories respectively coupled to the receivers and a data selector may selectively connect the display to one of the memories to display images with a picture-in-picture effect.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 5, 2011
    Applicant: APPLE INC.
    Inventor: Richard Tsai
  • Publication number: 20110081142
    Abstract: Input from a user is received, to take a picture. A camera flash is signaled to produce multiple flash pulses during a single shutter cycle of the picture. The amplitudes of at least two of the flash pulses are different relative to each other. The picture is stored, including in its metadata information that describes the variable amplitude of the flash pulses that illuminated the scene when taking the picture. The information describing the variable amplitude of the flash pulses is used to deblur the picture. Other embodiments are also described and claimed.
    Type: Application
    Filed: October 6, 2009
    Publication date: April 7, 2011
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Patent number: 7869701
    Abstract: A method and system for effecting adaptive autofocusing, such as for a camera, are disclosed. The method can comprise obtaining focusing information, such as historic focusing actuator current or voltage information or focusing lens position information, storing the focusing information, and subsequently using the focusing information to facilitate a determination of a best position of a focusing lens during a focusing process. The use of such focusing information can result in a better choice for the next focusing lens position to be tested, such that the focusing process can be performed more rapidly. The use of such focusing information can also mitigate the undesirable effects of production variations and/or component wear.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: January 11, 2011
    Assignee: Tessera MEMS Technologies, Inc.
    Inventor: Richard Tsai
  • Patent number: 7844172
    Abstract: A method and system for effecting adaptive autofocusing, such as for a camera, are disclosed. The method can comprise obtaining focusing information, such as historic focusing information, storing the focusing information, and subsequently using the focusing information to facilitate a determination of a best position of a focusing lens during a focusing process. The use of such focusing information can result in a better choice for the next focusing lens position to be tested, such that the focusing process can be performed more rapidly.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: November 30, 2010
    Assignee: Tessera MEMS Technologies, Inc.
    Inventor: Richard Tsai
  • Publication number: 20100277603
    Abstract: A device to capture an image includes an image sensor on which an optical image is formed by a lens. The image sensor provides electrical signals that represent the optical image. A motion sensor is included to sense movement of the image sensor. An image processor is coupled to the image sensor and the motion sensor. The image processor adjusts an integration time of the image sensor responsive to the motion sensor and creates a digital image according to the electrical signals received from the image sensor. The image processor may further respond to a signal-to-noise ratio in the electrical signals when adjusting the integration time. The image processor may select a frame scan of the image sensor responsive to the motion sensor. The image processor may add movement metadata to the digital image.
    Type: Application
    Filed: April 29, 2009
    Publication date: November 4, 2010
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20100238344
    Abstract: An electronic camera device has an imaging sensor to capture an image of a scene, a flash to illuminate the scene for capture by the sensor, and an evaluator to detect a condition in the scene. A redirector shifts the peak of a spatial energy profile of light from the flash. The peak is shifted from being aimed at one region in the scene to being aimed at another region in the scene, in response to the evaluator having detected the condition in the scene. Other embodiments are also described and claimed.
    Type: Application
    Filed: March 23, 2009
    Publication date: September 23, 2010
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20100225429
    Abstract: Systems and methods are providing for aligning an accessory to an electronic device interface. In particular, some accessories such as optical filters and lens require specific alignment to operative properly. Using a first magnet array positioned around the periphery of the interface and a second magnet array positioned within the accessory, a user can position an accessory on the electronic device and rotate the accessory until the magnets of each array exert a force on an opposing magnet of the other array. By distributing the magnets in a manner that includes no repeating segments, only a single alignment of the accessory relative to the interface can allow the magnet arrays to be properly in opposition.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 9, 2010
    Applicant: Apple Inc.
    Inventor: Richard Tsai