Patents Assigned to Sercomm Corporation
  • Publication number: 20210068011
    Abstract: A base station and an adjustment method for data transmission are provided. User equipment is selectively connected to two base stations at the same time. In the method, a remaining load amount is determined. A load demand amount required for a to-be-transmitted data bearer in the data bearer is determined. It is determined that a portion of the data packets corresponding to the to-be-transmitted data bearer is split, according to a comparison result between the remaining load amount and the load demand amount, to the second base station for transmission. A transmission ratio of the data packets split to the base station to those split to the second base station is determined according to a ratio of packet loss of the base station to the second base station. Accordingly, electric power of the user equipment can be saved, data loss can be reduced, and data can be converged effectively.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 4, 2021
    Applicant: Sercomm Corporation
    Inventors: Kun-Lin Chiang, Ching-Feng Liang
  • Patent number: 10924302
    Abstract: An integrated communication system and a service provisioning method thereof are provided. The integrated communication system includes a core network entity, a service provisioning system and an intermediary apparatus. The core network entity is resided in the mobile network. The service provisioning system is conformed to a wired network other than the mobile network. The intermediary apparatus is connected between the core network entity and the service provisioning system. The intermediary apparatus receives a configuration data with a first format conformed to the wired network from the service provisioning system, and transforms the configuration data into a configuration command with a second format conformed to the mobile network. The core network entity operates according to the configuration command. Accordingly, an operator of the wired network can manage network entities and network devices in the mobile network without knowledge of operation support system (OSS) platform of the mobile network.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: February 16, 2021
    Assignee: Sercomm Corporation
    Inventors: Chaoyang Sun, Ben Lin
  • Publication number: 20210021379
    Abstract: The invention provides a base station and an automatic retransmission scheduling method thereof. The automatic retransmission scheduling method includes the following steps: when at least one first layer of protocol data unit of a first protocol layer constitutes a second layer PDU of a second protocol layer, assigning a retransmission serial number of the second layer PDU according to a serial number of the first layer PDU; sending the second layer PDU to a user equipment; receiving a status report of a first retransmission mechanism of the first protocol layer, and an acknowledgement serial number indicates that receiving of multiple PDUs of the first protocol layer by the UE is acknowledged; comparing the retransmission serial number of the second layer PDU with the ACK serial number, and determining whether to disable retransmission of the second layer PDU based on a second retransmission mechanism.
    Type: Application
    Filed: April 20, 2020
    Publication date: January 21, 2021
    Applicant: Sercomm Corporation
    Inventor: Xujing Zhang
  • Patent number: 10880753
    Abstract: A master base station and a resource allocation indicating method are provided. The master base station and a distributed base station are based on a layer 1-layer 2 split technology. A bandwidth part (BWP) configuration is enabled. Different BWP configurations have different configurations in a frequency domain. The BWP configuration corresponds to continuous and part of the common resource units, and corresponds to a common configuration to generate a corresponding relation, which is related to a corresponding situation between identifications of the local resource units and the common resource units. The identifications of the local resource units are used in the BWP configuration to identify the local resource units, and the identifications of the common resource units are used in the common configuration to identify the common resource units. The corresponding relation is transmitted. Accordingly, the BWP can be applied to a transmission interface of layer 1-layer 2 split technology.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: December 29, 2020
    Assignee: Sercomm Corporation
    Inventors: Kun-Lin Chiang, Shao-Yu Chien, Jen-Feng Huang
  • Publication number: 20200389340
    Abstract: An integrated communication system and a service provisioning method thereof are provided. The integrated communication system includes a core network entity, a service provisioning system and an intermediary apparatus. The core network entity is resided in the mobile network. The service provisioning system is conformed to a wired network other than the mobile network. The intermediary apparatus is connected between the core network entity and the service provisioning system. The intermediary apparatus receives a configuration data with a first format conformed to the wired network from the service provisioning system, and transforms the configuration data into a configuration command with a second format conformed to the mobile network. The core network entity operates according to the configuration command. Accordingly, an operator of the wired network can manage network entities and network devices in the mobile network without knowledge of operation support system (OSS) platform of the mobile network.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 10, 2020
    Applicant: Sercomm Corporation
    Inventors: Chaoyang Sun, Ben Lin
  • Patent number: 10862516
    Abstract: A digital pre-distortion circuit and a digital pre-distortion method are provided. In the method, pre-distortion, digital-to-analog conversion and an amplifying process are performed on an input signal in sequence, to generate an output signal. A first bandwidth of the input signal after the pre-distortion is greater than a second bandwidth of the input signal after the digital-to-analog conversion. Signals outside the second bandwidth are filtered out from the output signal, to generate a second output signal. A third output signal, which is a signal after a pre-distorted signal is amplified, is estimated according to the pre-distorted signal and the second output signal. The pre-distorted signal is a signal after the pre-distortion is performed on the input signal. A third bandwidth of the third output signal is greater than the second bandwidth. Parameters of the pre-distortion can be determined according to the third output signal and the pre-distorted signal.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: December 8, 2020
    Assignee: Sercomm Corporation
    Inventors: Kun-Lin Chiang, Jia-Ming Chen
  • Patent number: 10841118
    Abstract: An automatic pairing method and a server are provided. The automatic pairing method is performed by the server for automatically pairing a first device with a second device. The automatic pairing method includes following steps. A user account associated with the first device is stored. An association request for associating the second device with the user account is received. A first security configuration parameter of the first device is transmitted to the second device. A second security configuration parameter of the second device is transmitted to the first device.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: November 17, 2020
    Assignee: SERCOMM CORPORATION
    Inventor: Yu-Li Shen
  • Patent number: 10805536
    Abstract: A video doorbell system comprising a video doorbell device, which comprises a chime trigger device, a first battery, an AC power receiving interface, an AC to DC circuit, a charging circuit, a DC power receiving interface and an image capture circuit. The first battery provides an internal DC voltage. The AC power receiving interface receives an AC voltage. The AC to DC circuit converts the AC voltage to a second DC voltage. The charging circuit drains the second DC voltage to charge the first battery. The DC power receiving interface receives a first DC voltage. The image capture circuit selectively drains the internal DC voltage, or the first DC voltage to operate.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: October 13, 2020
    Assignee: Sercomm Corporation
    Inventors: Chien-Ming Chen, Shiou-Hua Hu
  • Patent number: 10795241
    Abstract: An IP Camera includes a heat-generating element, a lens holder, a lens assembly and a heat-conducting element. The lens assembly includes a lens, a front portion and a rear portion opposite to the front portion. The front portion surrounds the lens. The lens assembly is disposed on the lens holder with the rear portion. The heat-conducting element has a thermal conductivity greater than 5 W/mK. The heat-conducting element is in contact with the heat-generating element, and a portion of the heat-conducting element surrounds the front portion.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: October 6, 2020
    Assignee: SERCOMM CORPORATION
    Inventor: Cheng-Chung Chang
  • Patent number: 10798366
    Abstract: A motion detection device is provided. The motion detection device includes a first image recording unit, a first storage unit, a motion detection unit, a depth calculation unit, and a determination unit. The first image recording unit is configured to record a first video. The first storage unit is configured to store the first video. The motion detection unit is configured to detect a moving object in the first video. The depth calculation unit is configured to calculate a depth of the moving object. The determination unit is configured to determine whether or not the moving object is a concerned event according to the depth of the moving object.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: October 6, 2020
    Assignee: SERCOMM CORPORATION
    Inventor: Chih-Sheng Kuo
  • Patent number: 10741036
    Abstract: A smoke detector comprising: a first light source, configured to generate first light beam; a second light source, configured to generate second light beam; a light receiver, configured to respectively generate a first and a second original light detecting signal in response to the first light beam and the second light beam, wherein an energy conversion efficiency of the light receiver at the first wavelength is different from an energy conversion efficiency of the light receiver at the second wavelength; a signal adjusting circuit, configured to amplify the second original light detecting signal to generate a second light detecting signal; and a driving and determining circuit, configured to determine signal intensities of the first original light detecting signal and the second light detecting signal.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: August 11, 2020
    Assignee: Sercomm Corporation
    Inventors: Meng-Chien Chiang, Cheng-Jeng Chou
  • Publication number: 20200251816
    Abstract: The disclosure provides a communication device including a ground plane, an antenna and an extended grounding structure. The ground plane has a first side and a second side opposite to each other. The antenna is disposed at the first side and has a first feeding end. The extended grounding structure is disposed at the second side and includes a connection portion and a symmetrical structure. The symmetrical structure is electrically connected to the ground plane via the connection portion, wherein the symmetrical structure is symmetrical along a symmetry axis, and an extension line of the symmetry axis passes through the first side and the second side. The disclosure can effectively prevent antenna efficiency from being degraded due to an insufficient size of the ground plane, so as to significantly enhance communication quality.
    Type: Application
    Filed: August 22, 2019
    Publication date: August 6, 2020
    Applicants: SERNET (SUZHOU) TECHNOLOGIES CORPORATION, Sercomm Corporation
    Inventor: Pei-Ju Lee
  • Patent number: 10699540
    Abstract: An electronic device that can detect and report tampering, comprising: a case, comprising an installation surface, wherein the electronic device is for being installed to an installation position via the installation surface; a battery, located inside the case, configured to provide battery power; a temporary power storage circuit, located in the case; a power off switch, located on the case and coupled between the battery and the temporary power storage circuit, configured to operate in a conductive state while the electronic device is installed at the installation position, and configured to automatically operate in a power off state after the electronic device being removed from the installation position; and a wireless communication circuit, located in the case and coupled to the power off switch and the temporary power storage circuit.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: June 30, 2020
    Assignee: Sercomm Corporation
    Inventors: Meng-Chien Chiang, Wen-Chin Wang
  • Patent number: 10692217
    Abstract: An image processing method and an image processing system are provided. A plurality of image detections are performed on the regions, such that the detections on the image data can adequately meet the variety of needs.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: June 23, 2020
    Assignee: SERCOMM CORPORATION
    Inventor: Shao-Hai Zhao
  • Publication number: 20200196206
    Abstract: A base station and a handover control method thereof are provided. The base station supports dual connectivity (DC) technology. The method includes the following steps. A handover request is transmitted, and a handover request response corresponding to the handover request is received. Whether the handover request response includes DC information is determined. In response to the handover request response not including the DC information, the DC information related to releasing a DC configuration is generated, and a handover command including the DC information is transmitted. The handover command corresponds to the handover request response. Accordingly, user equipment can be informed to release the DC configuration, so as to reduce power. In addition, a proper resource configuration would be provided.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 18, 2020
    Applicant: Sercomm Corporation
    Inventors: Tzu-Che Chiu, Chang-Kuo Yeh
  • Publication number: 20200196160
    Abstract: A multi-cell coordination system and a channel calibration method thereof are provided. A reference apparatus receives a beam-precoding downlink reference signal via a directional beam from a base station. The base station receives a beam-precoding uplink reference signal via the directional beam from the reference apparatus. The server receives uplink and downlink channel information, where the uplink channel information is generated based on the uplink reference signal, and the downlink channel information is generated based on the downlink reference signal. The server obtains a channel calibration coefficient according to the uplink and downlink channel information. The channel calibration coefficient is used for estimating a downlink channel. Accordingly, the problem of conventional coordination system can be solved, and the embodiment can be implemented in multi-beam base station.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 18, 2020
    Applicant: Sercomm Corporation
    Inventors: Kun-Lin Chiang, Jia-Ming Chen
  • Patent number: 10686970
    Abstract: An IP camera including a camera body and a cover is provided. The camera body includes an engaging face arranged on a side contoured surface surrounding the camera body and has a receiving slot being concave inwards the camera body from the engaging face for insertion of a memory card. The cover has an opening and an internal surface surrounding the opening. The internal surface of the cover is configured to surround and engage with the engaging face of the camera body. The cover is configured to block an entrance path to the receiving slot when the internal surface of the cover surrounds and engages with the engaging face of the camera body.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: June 16, 2020
    Assignee: SERCOMM CORPORATION
    Inventor: Chia-An Chen
  • Patent number: 10634826
    Abstract: An image capturing device includes a main body, at least one light source, a lens, and at least one first light shielding structure. The light source disposed at the main body is suitable for providing a light beam to an outside of the main body. The lens disposed at the main body is suitable for capturing a light entering the lens from the outside of the main body. The first light shielding structure is disposed at the main body. The light beam turns into an actual output light beam after being shielded by the first light shielding structure. The first light shielding structure shields the light beam in a vertical direction more than it shields the light beam in a horizontal direction, so an actual vertical light emitting angle of the actual output light beam is smaller than an actual horizontal light emitting angle of the actual output light beam.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: April 28, 2020
    Assignee: Sercomm Corporation
    Inventor: Chih-Sheng Kuo
  • Patent number: 10506636
    Abstract: A transceiving apparatus and a spectrum access controlling method thereof are provided. The transceiving apparatus may utilize an unlicensed spectrum. In the method, feedback information related to accessing the unlicensed spectrum is received. An energy detection threshold is modified according to the feedback information. Whether to access the unlicensed spectrum is determined according to the modified energy detection threshold. If a signal strength detected on the unlicensed spectrum is greater than the energy detection threshold, an access to the unlicensed spectrum is disabled. If the signal strength detected on the unlicensed spectrum is not greater than the energy detection threshold, the access to the unlicensed spectrum is performed. Accordingly, the chance that a data transmission collision occurs is decreased, and a utilization rate of the unlicensed spectrum is improved.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: December 10, 2019
    Assignee: Sercomm Corporation
    Inventor: Kun-Lin Chiang
  • Patent number: 10492317
    Abstract: A latching structure includes a first plate, a second plate and a sliding plate disposed on a surface of the first plate and movable in a first direction. The first plate includes first arches each having an alignment hole in the first direction. The second plate includes second arches each having a latching hole in the first direction. The sliding plate includes pins corresponding to the latching holes. When the alignment hole accommodates the second arch and the sliding plate is located at a latching position, the pin is located in a corresponding latching hole to block separation of the first plate from the second plate in a second direction. When the sliding plate is located at a retracted position, the pin separates from the corresponding latching hole to allow separation of the first plate from the second plate in the second direction.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: November 26, 2019
    Assignee: SERCOMM CORPORATION
    Inventors: Li-Li Ho, Cheng-Chung Chang, Yi-Fei Yu