公开(公告)号：US20180032211A1

公开(公告)日：2018-02-01

申请号：US15663588

申请日：2017-07-28

Applicant: Apple Inc.

Inventor： Brian Michael KING ,  Mohammad YEKE YAZDANDOOST ,  Ehsan KHAJEH ,  Aaron Scott TUCKER ,  Giovanni GOZZINI ,  Marcus YIP ,  Marduke YOUSEFPOR ,  Digvijay JADHAV ,  Indranil SEN ,  Mohit NARANG ,  Yi JIANG ,  Vahid MAJIDZADEH BAFAR ,  Mansour KERAMAT ,  Hao XU

IPC: G06F3/043 ,  H01Q1/00 ,  H01Q1/52 ,  H01Q7/00

CPC classification number: G06F3/0436 ,  G06F1/1694 ,  G06F1/1698 ,  G06F1/3231 ,  G06F1/325 ,  G06F1/3262 ,  G06F3/0418 ,  G06F3/0433 ,  G06F2200/1637 ,  G06F2203/04104 ,  G06F2203/04106 ,  H01Q1/002 ,  H01Q1/52 ,  H01Q7/005 ,  Y02D10/173

Abstract: Acoustic touch detection (touch sensing) system architectures and methods can be used to detect an object touching a surface. Position of an object touching a surface can be determined using time-of-flight (TOF) bounding box techniques, or acoustic image reconstruction techniques, for example. Acoustic touch sensing can utilize transducers, such as piezoelectric transducers, to transmit ultrasonic waves along a surface and/or through the thickness of an electronic device. Location of the object can be determined, for example, based on the amount of time elapsing between the transmission of the wave and the detection of the reflected wave. An object in contact with the surface can interact with the transmitted wave causing attenuation, redirection and/or reflection of at least a portion of the transmitted wave. Portions of the transmitted wave energy after interaction with the object can be measured to determine the touch location of the object on the surface of the device.

公开(公告)号：US20240313793A1

公开(公告)日：2024-09-19

申请号：US18122523

申请日：2023-03-16

Applicant: Apple Inc.

Inventor： Albert H. CHANG ,  Ahmad AL MARASHLI ,  George P. REITSMA ,  Sudharsan KANAGARAJ ,  Hamid NEJATI ,  Dusan STEPANOVIC ,  Vahid Majidzadeh BAFAR ,  Mansour KERAMAT ,  Mahdi KHOSHGARD

IPC: H03M1/06

CPC classification number: H03M1/0607

Abstract: The present disclosure describes a system with an antenna, a signal generator, data converters, and an aggregator circuit. The antenna is configured to provide an input signal to the data converters. The signal generator is configured to generate a random binary sequence received by the data converters. The data converters include an analog circuit and a digital circuit configured to sample positive and negative polarities of the input signal based on the random binary sequence, reducing an offset tone in an output spectrum produced by the aggregator circuit.

公开(公告)号：US20240044717A1

公开(公告)日：2024-02-08

申请号：US17882043

申请日：2022-08-05

Applicant: Apple Inc.

Inventor： Soheil GOLARA ,  Mansour KERAMAT ,  Seyedeh Sedigheh HASHEMI

IPC: G01K7/01 ,  H03K17/687

CPC classification number: G01K7/01 ,  H03K17/6872

Abstract: The present disclosure describes embodiments of a compact low voltage CMOS-based temperature sensor. The CMOS-based temperature sensor can include a reference voltage generator, a temperature front-end circuit, and an analog-to-digital converter (ADC). The reference voltage generator can be configured to generate a reference voltage independent of temperature. The temperature front-end circuit can include first and second transistors configured to generate a temperature signal proportional to temperature. The first MOS transistor can include first and second terminals. The first terminal can be electrically coupled to the reference voltage. The second terminal can be electrically coupled to the second MOS transistor. The second terminal can provide the temperature signal. The ADC can be electrically coupled to the reference voltage and configured to convert the temperature signal to a digital signal.

公开(公告)号：US20230022492A1

公开(公告)日：2023-01-26

申请号：US17816717

申请日：2022-08-01

Applicant: Apple Inc.

Inventor： Mohammad YEKE YAZDANDOOST ,  Brian M. KING ,  Ehsan KHAJEH ,  Giovanni GOZZINI ,  Marcus C. YIP ,  Mansour KERAMAT ,  Vahid MAJIDZADEH BAFAR ,  Aaron S. TUCKER

IPC: G06F3/043 ,  G06F1/3231 ,  G06F1/16 ,  G06F1/3234 ,  G06F3/041 ,  H01Q1/00 ,  H01Q1/52 ,  H01Q7/00

Abstract: Acoustic touch detection (touch sensing) system architectures and methods can be used to detect an object touching a surface. Position of an object touching a surface can be determined using time-of-flight (TOF) bounding box techniques, or acoustic image reconstruction techniques. Acoustic touch sensing can utilize transducers, such as piezoelectric transducers, to transmit ultrasonic waves along a surface and/or through the thickness of an electronic device. Location of the object can be determined, for example, based on the amount of time elapsing between the transmission of the wave and the detection of the reflected wave. An object in contact with the surface can interact with the transmitted wave causing attenuation, redirection and/or reflection of at least a portion of the transmitted wave. Portions of the transmitted wave energy after interaction with the object can be measured to determine the touch location of the object on the surface of the device.