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Chang, Shenzhen

Baoyan Chang, Shenzhen CN

Patent application numberDescriptionPublished
20090010009LED FLAT-PLATE TYPE MULTI-CHIP HIGH POWER LIGHT SOURCE - The present invention provides a LED flat-plate type multi-chip high power light source comprising a heat dissipating substrate, a reflecting cover mounted on the heat dissipating substrate, LEDs mounted on the heat dissipating substrate and in the reflecting cover, a circuit board embedded in the heat dissipating substrate connecting to the LEDs, and the circuit board also connecting to a socket set in the heat dissipating substrate. The heat dissipating substrate is made of high heat conduction metal. In the present invention, the heat dissipating substrate is made of high heat conduction metal, and the heat conducting pole is abolished. Comparing with the conventional art, the present invention decreases the heat dissipating path, increases the sectional area, and eliminates the intermediate link of high thermal resistance.01-08-2009
20090010010LED DIRECT-PLUGGING TYPE MULTI-CHIP HIGH POWER LIGHT SOURCE - The present invention provides a LED direct-plugging type multi-chip high power light source, comprising a heat dissipating substrate, a protecting rubber ring mounted at the obverse of the heat dissipating substrate, LEDs fixed on the heat dissipating substrate and in the protecting rubber ring, the heat dissipating substrate being provided with two through holes impenetrating its obverse and inverse, in each of the two through holes separately provided with a pin connecting to the LEDs, one end of the pin inserted into the through hole and the other end of the pin led out from the inverse of the heat dissipating substrate to the outside of the heat dissipating substrate, and the part of the pins inserted in the through holes being separated from the heat dissipating substrate by a dielectric. The heat dissipating substrate is made of high heat conduction metal. In the present invention, the heat dissipating substrate is made of high heat conduction metal, and the heat conducting pole is abolished. Comparing with the conventional art, the present invention decreases the heat dissipating path, increases the sectional area, and eliminates the intermediate link of high thermal resistance. The present invention increases the power of a single light source, decreases the attenuation of light greatly, and increases the useful life greatly.01-08-2009

Deyuan Chang, Shenzhen CN

Patent application numberDescriptionPublished
20100166423METHOD, DEVICE, AND SYSTEM FOR POLARIZATION DIVISION MULTIPLEXING AND DEMULTIPLEXING - A method, device, and system for polarization division multiplexing (PDM) and polarization division demultiplexing are provided in the field of communication and transmission. The device for polarization division demultiplexing includes a polarization controller (PC), a polarization beam splitter (PBS), a detection control module, an optoelectronic receiver 07-01-2010

Hao Chang, Shenzhen CN

Patent application numberDescriptionPublished
20110187676CAPACITIVE TOUCH SENSOR, TOUCH DETECTION DEVICE AND TOUCH TERMINAL - The present invention relates to touch detection technology and provides a capacitive touch sensor which comprises a driving electrode layer and a sensing electrode layer. An insulating isolation layer is disposed between the sensing electrode layer and the driving electrode layer. A touch panel is disposed over the sensing electrode layer, and the sensing electrode layer has hollowed-out sensing electrodes. The present invention provides a new sensor structure in which the sensing electrode layer (such diamond, rectangular, round etc.) is hollowed-out to improve sensitivity of touch detection and the signal to noise ratio (SNR).08-04-2011

Heng Chang, Shenzhen CN

Patent application numberDescriptionPublished
20080289012SYSTEM AND METHOD FOR CREATING, EXECUTING, AND MAPPING SERVICE - A service creation system and a method thereof are provided. In creation of a new service, a combined abstract service logic is created in accordance with existing service classes in a class catalog of existing services to implement service-level reuse. A service execution system and a method thereof are also provided, and during the operation of an abstract service logic, the abstract service logic is converted into a concrete service logic, and then a service is accessed in accordance with the concrete service logic. An abstract service mapping system and a method thereof are further provided. With the invention, the efficiency and flexibility of service development can be improved, services on a service network can be developed and deployed simply and rapidly, and the normal operation of the service network can be ensured effectively.11-20-2008
20090043709METHOD AND SYSTEM FOR DETECTING TRACE STATUS, TRACE AGENT AND TRACE CONTROL SERVER - The embodiments of the invention disclose a method for detecting status of a trace task, including: calculating a Token Digest value of a Service Level Tracing (SLT) Token according to information of the SLT Token; and verifying whether the Token Digest is changed. If the Token Digest is unchanged, it is determined that the trace task is not tampered; otherwise, it is determined that the trace task is tampered. The embodiments of the invention further disclose a corresponding system for detecting the status of the trace task as well as a trace agent and a trace control server. According to the embodiments of the invention, the status of the trace task can be effectively detected through calculating and verifying the Token Digest, so that it can be determined whether the trace task is tampered.02-12-2009
20090119367METHOD AND SYSTEM FOR PROVIDING SERVICE FUNCTIONS - A method for providing service functions includes: the service provider side receives a service request from the service requestor side, screens service functions requested by the service request and forms a service request result, and sends the service request result to the service provider side. A system for providing service functions includes: a service server on the service provider side, adapted to return the requested service to the service requestor side, according to the service request of the service requestor side; a function screener, connected to the service server on the service provider side and adapted to screen service functions requested by the service request and send the after-screening result to the service server on the service provider side. With the present invention, it is possible to control and screen functions of a service dynamically in real time without affecting the network performance.05-07-2009
20110173324METHOD, APPARATUS, AND SYSTEM FOR ACCESSING SERVICES OVER THE EXTENSIBLE MESSAGING AND PRESENCE PROTOCOL - An XMPP server in a home domain that an XMPP client belongs to receives a service access request over XMPP; the XMPP server selects a routing path for the service access request, and forwards the service access request to a next hop XMPP server according to the selected routing path, and forwards the service access request in turn, to an XMPP gateway connected to a service server; after the XMPP gateway receives the service access request, the XMPP gateway invokes the service server to obtain a service access response, and forwards the service access response to the XMPP server in the home domain that the XMPP client belongs to; the XMPP server in the home domain that the XMPP client belongs to sends the service access response to the XMPP client.07-14-2011
20110238840METHOD, SYSTEM, AND DEVICE FOR SERVICE NEGOTIATION - The present invention discloses a service negotiation method, system and device. The service negotiation method includes: obtaining a service negotiation request that contains multiple services; obtaining a requirement processing result of the multiple services according to the service negotiation request; and selecting a target service according to the requirement processing result, generating a service negotiation result corresponding to the service negotiation request, and returning the service negotiation result. The present invention enables the service network to support service negotiation under multiple service requirements and meets the needs of service interactions and the requirements of the negotiation requester. With the present invention, the success rate of service negotiation is increased and the user satisfaction is enhanced.09-29-2011
20110268039METHOD, APPARATUS, AND SYSTEM FOR IMPLEMENTING SERVICE ROAMING - The present invention discloses a method for implementing service roaming. The method includes: receiving a roaming registration request that includes a service identifier (ID); obtaining a physical access address of a service according to the service ID, and generating and storing service registration route information that includes the service ID and the physical access address of the service; obtaining an address of a home service router or a service router to which the service belongs before the service roams, and sending a roaming notification message to the home service router or the service router to which the service belongs before the service roams. In this way, a user may access the service, thus the user experience and the universality of services created by the user are improved.11-03-2011

Patent applications by Heng Chang, Shenzhen CN

Kuangyao Chang, Shenzhen CN

Patent application numberDescriptionPublished
20120134176BACKLIGHT MODULE AND LIGHT GUIDE PLATE THEREOF - The present invention discloses a backlight module and a light guide plate thereof. The light guide plate has a side incident surface, a light-emitting surface adjacent to the side incident surface, and a micro-structure array adjacent to the side incident surface. The side incident surface receives incident lights from a light source. The micro-structure array has a plurality of elongated prisms, and an end of each of the prisms is oriented to the side incident surface, so that an extension direction of each prism is parallel to or nearly parallel to a normal line of a light-emitting surface of the light source. The light guide plate can increase light transmission distance to provide uniform brightness. The structures of the prisms are maintained in a uniform arrangement, so that a prism mold need not be re-designed to satisfy requirements of panels with different sizes.05-31-2012

Lin Chang, Shenzhen CN

Patent application numberDescriptionPublished
20120096319METHOD AND SYSTEM FOR DIAGNOSING APPARATUS - A method and a system for diagnosing an apparatus are provided. The method for diagnosing the apparatus includes: determining whether the apparatus is to enter a diagnostic mode after a system is started; performing a diagnosis of the apparatus by executing a diagnostic proge apparatus is determined to enter the diagnostic mode; and performing a normal BIOS or EFI startup when the apparatus is determined not to enter the diagnostic mode. An accurate diagnosis of the apparatus can be realized by firstly determining whether the apparatus is to enter a diagnostic mode after a system is started, if yes, then the apparatus entering the diagnostic mode, and if not, then the apparatus performing a normal BIOS or EFI startup. Moreover, in case of a memory or PCI/PCIE bus error in the apparatus, since the diagnostic program is loaded prior to the BIOS startup, the fault can be diagnosed.04-19-2012

Mingzhu Chang, Shenzhen CN

Patent application numberDescriptionPublished
20090233044Carbon Fiber Composite Material, Product and Method - A carbon fiber composite material comprises a plurality of carbon fiber layers, each layer having a first set of carbon fibers aligned substantially parallel to the long axis of the fibers; and a resin covering at least a portion of the carbon fiber layers. The carbon fiber layers are stacked and laminated together; and at least two layers are disposed so that the first set fibers in the two layers have a relative angle of about 5-90° with each other.09-17-2009
20100013388Electroluminescent Plate, Product Containing the Same, and Preparing Method Thereof - A case product comprises an EL plate and a plastic shell, wherein the EL plate comprising a substrate film, a transparent electrode layer, a light-emitting layer, an insulating layer, a back electrode layer, and an adhesive layer, wherein the substrate film, the transparent electrode layer, the light-emitting layer, the insulating layer, the back electrode layer, the protective layer and the adhesive layer are configured to be positioned next to each other in a predefined order. And a method of preparing a case product comprises: coating a substrate film with a transparent electrode layer, a light-emitting layer, an insulating layer, a back electrode layer, a protective layer and an adhesive layer; shaping the substrate film in a high-pressure mold; cutting the substrate film in a cutting mold to form an EL plate; molding the EL plate in an injection mold, and integrating the EL plate with a plastic shell.01-21-2010
20100110622Product Case and an Electronic Device Using the Same - The present invention discloses a product case for housing an electronic device, wherein the product case comprising a case body; a decoration layer disposed on the case body; a decorating panel; wherein the surface of the decoration layer is configured with a chamber, and the decorating panel is configured to be inlayed inside the chamber. According to the present invention, the product case is configured with the decoration layer, and the decorating panel is configured to be inlayed inside the chamber. Therefore, the design of the electronic device is improved without influencing the decoration layer. Further, the design of the electronic device case may be customized in accordance with the requirement of the consumer.05-06-2010
20110109210METHOD OF INSERTING BRITTLE MATERIAL IN PLASTIC SHELL AND ELECTRONIC DEVICE HAVING THE PLASTIC SHELL - A method of inserting a brittle material into a plastic shell comprises: a) processing the brittle material, so that the brittle material comprises an embedded portion to be embedded into the plastic shell, an exposed portion to be exposed outside the plastic shell, and a positioning portion between the embedded portion and the exposed portion; b) putting the exposed portion and at least part of the position portion into a fixed mold core of an injection mold, with the brittle material being positioned in the fixed mold core by the positioning portion; and c) injecting molten plastic into the mold to form the plastic shell, in which the embedded portion and at least part of the positioning portion are embedded into the plastic shell with the exposed portion and the remaining or the positioning portion being exposed outside the plastic shell. An electronic device having the above plastic shell is also provided.05-12-2011
20110210026SHELL FOR ELECTRONIC DEVICE AND METHOD OF FORMING THE SAME - A shell for an electronic device is provided. The shell includes a shell body with an opening formed thereon, and a light transmitting plate mounted onto the shell body to cover the opening. The shell body is formed by hot-pressing at least two layers of carbon fiber fabrics prepreged with a thermosetting resin.09-01-2011
20120100345GLASS ARTICLE AND METHOD OF FORMING THE SAME - A glass article is provided. The glass article may comprise: a glass body with convex-concave and/or via hole structures formed on at least a part of periphery of the glass body; a plastic layer adhered to the periphery of the glass body with adhesive coated therebetween. The plastic layer may be adhered to the glass body via the convex-concave and/or via hole structures. A method of forming the glass article as described above is also provided.04-26-2012

Patent applications by Mingzhu Chang, Shenzhen CN

Ningjuan Chang, Shenzhen CN

Patent application numberDescriptionPublished
20120127883METHOD, APPARATUS, AND SYSTEM FOR DETERMINING AND MAINTAINING QUALITY OF SERVICE PARAMETERS ON A MULTI-HOP NETWORK - Disclosure of the present embodiments relate to a method, an apparatus, and a system for determining and maintaining quality of service parameters on a multi-hop network. The method for determining QoS parameters on a multi-hop network includes: in a data transmission process in a transmission path from a user equipment to an evolved NodeB, acquiring statistics of QoS parameters of a relay link in the transmission path; and determining, according to the statistics of the QoS parameters of the relay link and in combination with QoS parameters that need to be maintained in the transmission path and radio interface topology information in the transmission path, QoS parameters that need to be acquired by an access link and the relay link in the transmission path.05-24-2012

Tianhai Chang, Shenzhen CN

Patent application numberDescriptionPublished
20100142960UPGRADING METHOD, SYSTEM AND APPARATUS OF LOW-DENSITY WAVELENGTH DIVISION MULTIPLEXING SYSTEM - An upgrading method, a system, and an apparatus of a low-density wavelength division multiplexing (WDM) system are provided. The method includes: detecting an output wavelength shift of a wavelength conversion unit, and adjusting an output wavelength of the wavelength conversion unit having the output wavelength shift higher than a threshold, so that the output wavelength shift of the wavelength conversion unit is lower than the threshold; adjusting an adjustable interleaved demultiplexer, until requirements for a demultiplexing parameter of a high-density WDM system are met. Thus, the problem that services are interrupted when a low-density MDM system is upgraded to a high-density MDM system is solved. A WDM system, and a wavelength multiplexing/demultiplexing apparatus and method are also provided.06-10-2010

Xin Chang, Shenzhen CN

Patent application numberDescriptionPublished
20090252094Method for allocating wireless communication resources in distributed antenna system - A method for allocating wireless communication resources in a distributed antenna system, in which the reuse factor of the wireless communication resource is further reduced and the utilization efficiency of the wireless communication resources is improved. In a group of service areas joining as a node in the system, the coverage area of each service area is divided into a central region and a boundary region, with each central region forming a central region allocating unit, and the boundary regions of a pair of adjoining service areas forming a boundary region allocating unit; each central region allocating unit is allocated with the same wireless communication resources and the quantity thereof is decided by the ratio of the area size of said central region to the area size of said service area, and also the quantity of all usable wireless communication resources in the system; each boundary region allocating unit is allocated with different wireless communication resources and the quantity thereof is decided by the remaining wireless quantity of wireless communication resources after the quantity of all usable wireless communication resources in the system minus the quantity of the wireless communication resources allocated to the central region allocating unit, and also the number of said boundary region reallocating units; and in a different group of service areas joining at one node, all usable wireless communication resources in said system are reused by the same allocating mode.10-08-2009
20110116427METHOD AND APPARATUS FOR CONFIGURING MODE TIMERS - Controlling a probability that user equipment is in a power saving mode to adapt the user equipment to characteristics of a shared channel and packet service includes determining a class of the user equipment by comparing at least one data traffic requirement value and a power condition value of the user equipment with predetermined threshold values, and adjusting mode timers according to the determined class of the user equipment depending on the data traffic requirement values and depending on the power condition value of the user equipment.05-19-2011

Yilin Chang, Shenzhen CN

Patent application numberDescriptionPublished
20090245392METHOD AND SYSTEM FOR CONCEALING ERRORS - A method for concealing errors includes that the transmitting end splits the received compressed video data into slice structures, allocates the adjacent slice structures to non-adjacent OFDM sub-channels or sub-channel groups, and sends the slice structures to the receiving end; the receiving end conceals the errors on a slice structure according to the slice structure which is chronologically or spatially related to the erroneous slice structure if detecting that any error occurs on the slice structure. The transmitting end includes a slice splitting module and a frequency domain interleaving module; the receiving end includes a domain de-interleaving module, a decompression and error detecting module, and an error concealing module.10-01-2009
20100220791Video coding and decoding method and codex based on motion skip mode - A video coding method based on a motion skip mode (MSM) is provided. The method includes the following steps. A corresponding reference block of a current macro block to be encoded in a view-point reference image is determined, according to a direction of a disparity vector from a current image relative to the view-point reference image deduced by using a block smaller than 16×16 pixels as a base unit. The current macro block to be encoded is then encoded according to motion information of a macro block that the determined corresponding reference block belongs to. Other related video coding methods and corresponding codecs based on the MSM are also provided. Therefore, macro block motion information (MMI) of the currently encoded macro block at a corresponding position in the view-point reference image can be more accurately obtained, thereby improving a coding efficiency of the MSM.09-02-2010
20110273537METHOD AND APPARATUS FOR COMPUTING A PARALLAX - A method and an apparatus for computing a parallax are provided. The method includes: obtaining a plurality of views of a pixel point; computing gradients in a plurality of directions of the pixel point in the plurality of view; computing a matching error corresponding to a parallax of the pixel point according to the gradients; and computing the parallax of the current pixel point according to the matching error. Through the method and the apparatus for computing a parallax, the accuracy of parallax estimation is increased.11-10-2011

Patent applications by Yilin Chang, Shenzhen CN

Yue Chang, Shenzhen CN

Patent application numberDescriptionPublished
20090122801ETHERNET SWITCHING AND FORWARDING METHOD, SYSTEM AND APPARATUS - An Ethernet switching and forwarding method, and at least one Ethernet forwarding mode of standard Ethernet forwarding, multiplex Ethernet forwarding, layer-3 routing and forwarding, across-VLAN multicast forwarding plane, point-to-point VLAN forwarding, or point-to-point double VLAN forwarding. The method includes: an Ethernet message entering a user side port or a network side port; processing, by the port, the message to provide the message with a VLAN tag allocated uniformly by the port; determining, by the port, a forwarding mode for the message and sending the message to a corresponding forwarding plane; determining, by the forwarding plane, an egress port of the message and processing the specific Ethernet control message in accordance with a control message capturing policy table; and forwarding the message to the egress port and encapsulating the message in accordance with an attribute table of the egress port.05-14-2009
20090147786MULTICAST SERVICE PROCESSING METHOD AND ACCESS EQUIPMENT - A multicast service processing method and access equipment are disclosed. The method includes: receiving multicast program request message from terminal device, inquiring about program rating parameters according to said multicast program request message, wherein the program rating parameter includes multicast group IP address and multicast program rated priority, generating multicast program data according to the program rating parameters, sending the multicast program data to the terminal device.06-11-2009

Zhiwen Chang, Shenzhen CN

Patent application numberDescriptionPublished
20100142960UPGRADING METHOD, SYSTEM AND APPARATUS OF LOW-DENSITY WAVELENGTH DIVISION MULTIPLEXING SYSTEM - An upgrading method, a system, and an apparatus of a low-density wavelength division multiplexing (WDM) system are provided. The method includes: detecting an output wavelength shift of a wavelength conversion unit, and adjusting an output wavelength of the wavelength conversion unit having the output wavelength shift higher than a threshold, so that the output wavelength shift of the wavelength conversion unit is lower than the threshold; adjusting an adjustable interleaved demultiplexer, until requirements for a demultiplexing parameter of a high-density WDM system are met. Thus, the problem that services are interrupted when a low-density MDM system is upgraded to a high-density MDM system is solved. A WDM system, and a wavelength multiplexing/demultiplexing apparatus and method are also provided.06-10-2010