Abstract: An embodiment of the present disclosure provides a semiconductor device. The semiconductor device has a first semiconductor structure; a second semiconductor structure on the first semiconductor structure and having a first aluminum content; a plurality of voids in the second semiconductor structure; an active structure between the first semiconductor structure and the second semiconductor structure; and a third semiconductor structure between the active structure and the second semiconductor structure, and having a second aluminum content. The first aluminum content is greater than the second aluminum content.

Abstract: Aspects presented herein provide a virtual showroom system and method that facilitates users to arrange showcase items of interest in different virtual environments and settings. In one aspect, an online virtual showroom system provides a first interface including a first virtual 3D environment, the first virtual 3D environment including multiple objects that are selectable through the first interface for placement into a list. The online virtual showroom system provides a second interface including a second virtual 3D environment that is separate from the first virtual 3D environment, the second interface configured to receive a selection of ones of the multiple objects placed into the list for rendering in the second virtual 3D environment and receive an input to manipulate one or more objects from the selected and rendered ones of the multiple objects placed into the list in the second virtual 3D environment.

Abstract: The present disclosure provides a method and an electronic apparatus for masking data on an electronic document. The method is performed by the electronic apparatus and includes: displaying the electronic document on a user interface; causing at least one analysis module to perform at least one analysis on the electronic document and a plurality of strings of the electronic document and output a first string among the plurality of strings and first position information associated with the first string according to a result of the at least one analysis; obtaining the first string and the first position information from the at least one analysis module; and generating, based on the first position information and the first string, a first masking object to mask the first string on the electronic document.

Abstract: A system for displaying an online electronic document includes a document server, a notification server and a remote conference server. The remote conference server is configured to establish a conference call connection between a first electronic device and a second electronic device. The first electronic device and the second electronic device are able to respectively download from the document server and display an electronic document. After one page of the electronic document displayed on the first electronic device is switched to another page, the first electronic device generates a page turning indication and transmits the page turning indication to the notification server via the document server. The notification server transmits the page turning indication to the second electronic device, and one page of the electronic document displayed on the second electronic device is switched to another page in response to the page turning indication.

Abstract: There is provided a method for determining text blocks of a PDF text, including: acquiring information of characters of the PDF text; performing an initial division according to gap outliers of the PDF text in a transverse direction and a longitudinal direction, and adding block tags of first text blocks to the information of characters; sequentially processing inaccurate lines and inaccurate words in each first text block according to baselines of characters, character lengths, character spaces and character indexes; performing a baseline arrangement on lines of the PDF text; sequentially comparing two lines to form second text blocks; and sequentially comparing two second text blocks to identify whether to perform a secondary merging and a secondary division.

Abstract: There is provided a method for processing tables in a PDF file, including: parsing the PDF file to obtain coordinates of start points and end points of all transverse line sections and longitudinal line sections; obtaining coordinates of crosspoints of all line sections and recording coordinates of line sections that form the crosspoints; calculating all unit grids according to the coordinates of the crosspoints and the coordinates of the line sections; and filling every character respectively into a corresponding unit grid according to character coordinates obtained in parsing the PDF file.

Abstract: A digital signature method and a verification method for a digital signature are provided. The digital signature method includes configuring a processor of an electronic device to: obtain, from a memory, to-be-signed data and a private key used by the electronic device for digital signing; extract a to-be-signed data segment from the to-be-signed data; perform a hash operation on the to-be-signed data segment to obtain a first digest value; encrypt the first digest value with the private key to generate signature data; and append the signature data to the to-be-signed data to generate to-be-verified data.

Abstract: An online signing system and method, a computing apparatus, and a computer-readable recording medium are provided. An assigned task is generated by a task assignment apparatus to the computing apparatus. The computing apparatus generates a signing request based on the assigned task to be transmitted to a client apparatus. The client apparatus downloads an assignment file from a storage database based on the signing request to display the assignment file on a display. The client apparatus receives an input via an input unit to generate a signature object on the assignment file, and transmits the signature object to the computing apparatus. After receiving the signature object, the computing apparatus combines the signature object and the assignment file to obtain a signed file, and transmits the signed file to the storage database.

Abstract: An optoelectronic device includes a substrate, a first semiconductor stack located on the substrate, a second semiconductor stack located on the first semiconductor stack, and a first optical structure located between the first semiconductor stack and the second semiconductor stack. The first semiconductor stack includes a first semiconductor layer, a second semiconductor layer and a first active layer which emits or absorbs a first light with a first wavelength. The second semiconductor stack includes a third semiconductor layer, a fourth semiconductor layer and a second active layer which emits or absorbs a second light with a second wavelength smaller than the first wavelength. The first optical structure includes a plurality of first parts and a plurality of second parts. The first parts and the second parts are alternately arranged by a first period along a horizontal direction parallel to the substrate.

Abstract: Aspects presented herein provide a virtual showroom system and method that facilitates users to arrange showcase items of interest in different virtual environments and settings. In one aspect, an online virtual showroom system provides a first interface including a first virtual 3D environment, the first virtual 3D environment including multiple objects that are selectable through the first interface for placement into a list. The online virtual showroom system provides a second interface including a second virtual 3D environment that is separate from the first virtual 3D environment, the second interface configured to receive a selection of ones of the multiple objects placed into the list for rendering in the second virtual 3D environment and receive an input to manipulate one or more objects from the selected and rendered ones of the multiple objects placed into the list in the second virtual 3D environment.

Abstract: A semiconductor device is provided, which includes a substrate, a first semiconductor structure, a plurality of first holes, a first dielectric structure and a second semiconductor structure. The first semiconductor structure is located on the substrate. The first holes are periodically arranged in the first semiconductor structure. The first dielectric structure is filled in one or more of the first holes. The second semiconductor structure is located on the first semiconductor structure.

Abstract: A lens fixing module is configured to fix a lens, wherein the lens has a flange. The lens fixing module includes a fixing base and a fixing ring. The fixing base has a hollow pillar and a first connecting portion. The fixing ring has a restraining portion and a second connecting portion. An end of the lens is inserted into the hollow pillar, the fixing ring is disposed on the lens and the hollow pillar, and the first connecting portion is connected to the second connecting portion, such that the flange is sandwiched in between the restraining portion and the hollow pillar.

Abstract: A test chart which is used in a method for testing resolution of a wide-angle lens includes a test area, first patterns, and second patterns. The test area has a center point, and first and second diagonal lines intersecting at the center point. The first and second patterns are arranged around the center point and located on the first and second diagonal lines. Each of the second patterns comprises first to fourth points successively connected by curves with curvature positively related to a distortion value in relation to the wide-angle lens under test. By designing the test area, the first patterns, and the second patterns, a deformation of the first and second patterns in a captured image can be eliminated. The method for testing resolution using the test chart is also disclosed.

Abstract: A cooling device includes at least one fin laminated body which extends in a first direction and includes fins laminated in a second direction perpendicular to the first direction, and a heat conductor which extends in the second direction and is inside the fin laminated body. A second-direction interval between adjacent ones of the fins on one side of the fin laminated body in the first direction is greater than another second-direction interval between adjacent ones of the fins on another side of the fin laminated body in the first direction.

Abstract: An optical lens includes a first transparent portion and a first flange portion arranged around the first transparent portion. The first transparent portion and the first flange portion are symmetrical about an optical axis of the optical lens. The first flange portion includes a connecting portion and a peripheral portion. The connecting portion is coupled between the first transparent portion and the peripheral portion. An object side of the first transparent portion includes a first transparent surface. The connecting portion includes a connecting surface coupled to the first transparent surface. The connecting surface is a textured surface.

Abstract: An optical lens includes a transparent portion and a flange portion surrounding the transparent portion. The flange portion includes a connecting portion, a transition portion, and an edge portion. The connecting portion is coupled between the transparent portion and the transition portion. The transition portion is coupled between the connecting portion and the edge portion. The flange portion defines a V-shaped groove. The V-shaped groove surrounds the transparent portion.

Abstract: An optical lens includes a lens barrel, a first lens, and an aperture. The lens barrel includes a first end and a second end. A receiving space is provided between the first end and the second end. The first end is provided with a light inlet opening communicating with the receiving space. The second end is provided with a light outlet opening communicating with the receiving space. A first light enters through the light inlet opening. A second light exits through the light outlet opening. The first lens is located in the receiving space and configured to receive and transmit at least a portion of the first light. The aperture is located in the receiving space and fixedly arranged on a side of the first lens facing away from the second end. The aperture is used to adjust an amount of the first light incident into the lens barrel.

Abstract: A protective panel assembly for protecting an exterior surface of a vehicle, the protective panel assembly including a panel having an inner layer, an outer layer, and a plurality of rigid members. The inner layer and the outer layer are formed of a flexible material. The plurality of rigid members are positioned between the inner layer and the outer layer. The plurality of rigid members being spaced apart from each other.

Abstract: An optical lens includes a first lens, a filter, and a shading sheet between the first lens and the filter. The first lens is configured to emit a first light with a wavelength in a first wavelength range and a second light in a second wavelength range. The filter is after the first lens, allowing the through transmission of the first light for imaging but reflecting the second light. The shading sheet absorbs at least a part of the second light. An imaging device and an electronic device using same are also provided.