Abstract: One or more implementations of the present specification provide an invoice access method and apparatus based on a blockchain, and an electronic device. The method includes: generating first ciphertext data by encrypting plaintext data of the target invoice based on a first key corresponding to an invoice issuer; generating second ciphertext data by encrypting the plaintext data of the target invoice based on a second key corresponding to an invoice receiver; adding the first ciphertext data and an user identifier of the invoice issuer to the blockchain as related to one another; and adding the second ciphertext data and an user identifier of the invoice receiver to the blockchain as related to one another.

Abstract: A wireless local area network (WLAN) access method includes sending, by a terminal, a request for querying an available wireless access point to a server. The method further includes sending, by the server according to the query request, obtained information about the available wireless access point. The method further includes receiving, by the terminal, wireless access point information returned by the server, and determining a specific wireless access point from the received wireless access point information. The method further includes sending, by the terminal, an authentication information request of the specific wireless access point to the server. The method further includes when receiving the request, sending, by the server, authentication information corresponding to the specific wireless access point to the terminal, where the authentication information is used to connect the terminal to the specific wireless access point.

Abstract: A wireless local area network (WLAN) access method includes sending, by a terminal, a request for querying an available wireless access point to a server. The method further includes sending, by the server according to the query request, obtained information about the available wireless access point. The method further includes receiving, by the terminal, wireless access point information returned by the server, and determining a specific wireless access point from the received wireless access point information. The method further includes sending, by the terminal, an authentication information request of the specific wireless access point to the server. The method further includes when receiving the request, sending, by the server, authentication information corresponding to the specific wireless access point to the terminal, where the authentication information is used to connect the terminal to the specific wireless access point.

Abstract: A wireless local area network (WLAN) access method, a terminal, and a server implement intelligentization and simplify a user operation. The method includes sending, by the terminal, a request for querying an available wireless access point to a server; sending, by the server according to the query request, obtained information about the available wireless access point; then, receiving, by the terminal, wireless access point information returned by the server, and determining a specific wireless access point from the received wireless access point information; then, sending, by the terminal, an authentication information request of the specific wireless access point to the server; and when receiving the request, sending, by the server, authentication information corresponding to the specific wireless access point to the terminal, where the authentication information is used to connect the terminal to the specific wireless access point.

Abstract: Embodiments of the present invention provide a blacklist management method and a device, relate to the field of communications, and are used for rapidly and conveniently adding a number to a blacklist, thereby improving operation efficiency of a terminal. The method includes: detecting, by a first terminal, an acceleration of the first terminal; when it is determined that the acceleration is greater than or equal to a first preset value, acquiring identification information of a second terminal; and adding the identification information to a blacklist. Embodiments of the method are used for blacklist management.

Abstract: This application provides a call method, a call apparatus, a VOIP server, and a call system. The call method includes: receiving, by a VOIP server, a first call request that is forwarded by a first VOIP gateway and that includes a local identifier; acquiring, by the VOIP server according to a prestored association relationship, a destination identifier that corresponds to the local identifier; searching, by the VOIP server, for a visited location GMSC to which the destination identifier belongs; and sending, by the VOIP server, a second call request including the destination identifier to the visited location GMSC, so that the visited location GMSC calls the destination identifier.

Abstract: Embodiments of the present invention provide a blacklist management method and a device, relate to the field of communications, and are used for rapidly and conveniently adding a number to a blacklist, thereby improving operation efficiency of a terminal. The method includes: detecting, by a first terminal, an acceleration of the first terminal; when it is determined that the acceleration is greater than or equal to a first preset value, acquiring identification information of a second terminal; and adding the identification information to a blacklist. Embodiments of the method are used for blacklist management.

Abstract: A light module includes a plurality of LEDs coupled on a circuit board, a condenser unit including a plurality of condensers integrally coupled with each other and supported on the circuit board, and a plurality of converging lenses supported within the light cavities of said condensers respectively. Each LED is located at a focal point of the condenser and is located at a focal point of the converging lens. A first portion of light from the LED is directly project toward the converging lens and is diverged by the converging lens to parallelly project out of the condenser. A second portion of light from the LED is reflected by a light reflecting wall of the condenser to parallelly project out of the condenser. Therefore, the first and second portions of light form collimated light beams out of a light opening of the condenser.

Abstract: A wireless local area network (WLAN) access method, a terminal, and a server implement intelligentization and simplify a user operation. The method includes sending, by the terminal, a request for querying an available wireless access point to a server; sending, by the server according to the query request, obtained information about the available wireless access point; then, receiving, by the terminal, wireless access point information returned by the server, and determining a specific wireless access point from the received wireless access point information; then, sending, by the terminal, an authentication information request of the specific wireless access point to the server; and when receiving the request, sending, by the server, authentication information corresponding to the specific wireless access point to the terminal, where the authentication information is used to connect the terminal to the specific wireless access point.

Abstract: An LED signal lamp which includes at least one white LED illumination unit, and at least one light filter each is provided in a light path of each of the white LED illumination unit for filtering at least one portion of light beams of the white LED illumination unit to provide nonwhite light beams of a predetermined color. Thus colored signal lamp is provided via white LED illumination units, the light efficiency is enhanced, the structure is simple, and the manufacturing costs are low.

Abstract: A light module includes a plurality of LEDs coupled on a circuit board, a condenser unit including a plurality of condensers integrally coupled with each other and supported on the circuit board, and a plurality of converging lenses supported within the light cavities of said condensers respectively. Each LED is located at a focal point of the condenser and is located at a focal point of the converging lens. A first portion of light from the LED is directly project toward the converging lens and is diverged by the converging lens to parallelly project out of the condenser. A second portion of light from the LED is reflected by a light reflecting wall of the condenser to parallelly project out of the condenser. Therefore, the first and second portions of light form collimated light beams out of a light opening of the condenser.

Abstract: A fluorescence-like light emitting diode (LED) illumination unit is provided, which includes a radiator, an LED substrate fixed on the radiator, and multiple LED illuminants encapsulated on the LED substrate. A first surface of the radiator is in the shape of a paraboloid with reflective effect. A bar-shaped convex lens with radial converging effect is disposed in the space surrounded by the paraboloid. The bar-shaped convex lens is located in front of the multiple LED illuminants and radially converges part of light rays emitted by the multiple LED illuminants but axially diffuses them. The illumination unit completely solves the problems such as exposure of spotted light sources, small irradiation angle of a light path, beaded light spots of the LED light sources as the lamp illuminant, visual dizziness caused by multiple projections formed by irradiating an irradiated object with a multi-point light source, dazzling light rays, and the like in an existing LED illumination lamp.

Abstract: A fluorescence-like light emitting diode (LED) illumination unit is provided, which includes a radiator, an LED substrate fixed on the radiator, and multiple LED illuminants encapsulated on the LED substrate. A first surface of the radiator is in the shape of a paraboloid with reflective effect. A bar-shaped convex lens with radial converging effect is disposed in the space surrounded by the paraboloid. The bar-shaped convex lens is located in front of the multiple LED illuminants and radially converges part of light rays emitted by the multiple LED illuminants but axially diffuses them. The illumination unit completely solves the problems such as exposure of spotted light sources, small irradiation angle of a light path, beaded light spots of the LED light sources as the lamp illuminant, visual dizziness caused by multiple projections formed by irradiating an irradiated object with a multi-point light source, dazzling light rays, and the like in an existing LED illumination lamp.

Abstract: The present invention relates to a highly-efficient and high-power LED light source and LED lamp which uses the light source and the application of the lamp, particularly relates to a high-power LED light source and to a high-power LED lamp which uses such light source, and also to the application of such lamp. A highly-efficient and high-power LED light source comprising an LED, a condenser which condenses the light of the LED, wherein the said condenser is a concave mirror, and wherein the emitting part of the said LED is located at the focus of the concave mirror; and a converging lens which is located in front of the said LED, wherein the focus of the said converging lens is located at the emitting part of the said LED. The present invention solved the problem of low luminous efficiency of existing high-power LED light sources, and the problem of inadequate fullness and softness of the light emitted by existing high-power LED light sources.

Abstract: Embodiments of the present invention disclose a method for providing Unified Communication (UC) service, which includes obtaining communication information displayed on a terminal where a mouse locates; triggering a corresponding UC service based on the communication information. The present invention also discloses a UC client. The UC client includes a communication information obtaining unit, capable of capturing communication information displayed on a terminal where a mouse locates, and a UC service unit, capable of triggering a corresponding UC service based on the communication information. In this way a user needs to move a cursor or press a key in the active interface to enter corresponding communication information into the UC client, therefore the complicated operations of manually keying in communication information or searching an address book in the UC client interface according to conventional technique are avoided and the users' burden will be relieved.

Abstract: Embodiments of the present invention disclose a method for providing Unified Communication (UC) service, which includes obtaining communication information displayed on a terminal where a mouse locates; triggering a corresponding UC service based on the communication information. The present invention also discloses a UC client. The UC client includes a communication information obtaining unit, capable of capturing communication information displayed on a terminal where a mouse locates, and a UC service unit, capable of triggering a corresponding UC service based on the communication information. In this way a user needs to move a cursor or press a key in the active interface to enter corresponding communication information into the UC client, therefore the complicated operations of manually keying in communication information or searching an address book in the UC client interface according to conventional technique are avoided and the users' burden will be relieved.