Abstract:
A security system for electronic circuits (e.g. electronic circuits contained within a secure POS terminal) is provided that is both more tamper resistant, and tamper responsive and less expensive than the prior art epoxy potting. This is achieved by inserting an electrical connector between a first and a second circuit board contained within a case of the POS terminal. The first and the second circuit boards are any type of circuit board known in the art, including both not limited to, rigid circuit boards, flexible circuit boards, printed circuit boards, etc. If the case is opened the connector no longer provides an electrical connection between the first and the second circuit boards, triggering a tamper detection circuit. In some embodiments of the invention, a flexible conductive film is wrapped around the circuit boards and the connector. If a tamperer attempts to penetrate the case of the POS terminal to disable the tamper detection circuit, the circuit on the flexible security film is interrupted, in turn triggering the tamper detection circuit. As a result, the secure POS terminal of the present invention overcomes the limitations of prior art potted terminals. By eliminating the potting process, in fact, the cost of manufacturing the terminal is reduced and there is no need for a special ventilation system. In addition, the circuitry within the terminal can be accessed for repair and maintenance purposes.
Abstract:
A circuit comprises a first circuit portion that includes an electrically insulative first body having a first connector and a first circuit element coupled to the first body. The circuit further comprises a second circuit portion that includes an electrically insulative second body having a second connector coupled to the first connector and a second circuit element coupled to the second body. The circuit further comprises a first electrical conductor coupled to the first and second circuit elements.
Abstract:
The present invention discloses a method for reinforcing the connection between a wire formed on a substrate and a flat cable member with a reinforcing material. The method includes the step of supplying fluid and the step of hardening the fluid to form the reinforcing material. The step of supplying the fluid includes the step of bringing the substrate connecting to the flat cable member close to a jig and then supplying the fluid to a region in which the reinforcing material is to be formed while preventing the outflow of the fluid with the jig.
Abstract:
A ball grid array (BGA) electronic component package having a configuration which is capable of improving mounting efficiency as well as preventing footprints from breaking away at circuit-connecting portions of the electronic component package. The BGA package has reinforcing bumps formed in an area located outward of a predetermined area in which conventional circuit-connecting bumps are arranged. Therefore, even if a shock is applied to the BGA package at the outer or peripheral portion of the BGA package, which is most sensitive to such a shock, the shock is absorbed by the reinforcing bumps and reinforcing footprints which have no electrical connection with the circuitry of the electronic component package. Thus, the footprints formed on a mounting portion of the BGA package and those formed on the printed circuit board can be prevented from breaking away or being cracked.
Abstract:
An apparatus and a method for connecting high-frequency circuit boards, and for providing an electrical connection between respective electrodes of two high-frequency circuit boards includes an electrode connecting member including a bar-shaped member having a predetermined sectional shape, and having connecting electrodes formed on a part of an outer periphery of the bar-shaped member. The connecting electrodes are located so as to provide an inter-connection between the respective electrodes of the two high-frequency circuit boards through the connecting electrodes and to be sandwiched between the respective electrodes thereof. The connecting electrodes are preferably composed of a plurality of electrode lines formed so as to be spaced at a predetermined interval on the outer periphery of the bar-shaped member.
Abstract:
A method of producing a multilayer wiring substrate is disclosed. The multilayer wiring substrate is free from a core substrate and includes a build up layer which includes an insulator layer and a wiring layer. One of a first main surface and a second main surface of the build up layer is formed with a metal supporting frame body. The method includes the steps of: forming a first insulator layer on a first main surface of a metal supporting plate, where the first insulator layer is included in the insulator layer and becomes a first resist layer which is positioned on the first main surface's side of the build up layer, and forming a first metal pad layer in a given position on a first main surface of the first insulator layer, where the first metal pad layer is included in the wiring layer and becomes a metal pad layer.
Abstract:
The invention provides a carrier housing assembly holding a flexible foil having conductive tracks in which the housing assembly has a plurality of parts each having a respective securing mechanism, the securing mechanisms being mutually engageable to provide a predetermined spatial relationship between the part, thereby providing the flexible foil with a predetermined spatial arrangement. The housing assembly is particularly relevant to component housing assemblies where electrical components are held in place and connected to connecter pins via the flexible foil. In a further aspect of the invention, there is provided methods for manufacturing a foil carrier housing assembly out of a flexible foil comprising conductive tracks at least one electrical component, at least one electrical contact element, at least one component housing and a carrier housing.
Abstract:
A temperature compensated crystal oscillator is manufactured by placing a ring-shaped board on a main board to surround compensating components on the main board, and placing a crystal package on the ring-shaped board. A component mounting area on the main board is reduced, thereby reducing a product size. At least one conductive pad may be attached to the ring-shaped board to connect the crystal package to a certain circuit on the main board. The conductive pad may be provided at each of four corners of a rectangular ring-shaped board.
Abstract:
A mobile phone with a dual PCB structure. The mobile phone includes a first PCB with electronic elements disposed thereon. A conductive enclosure is disposed on the first printed circuit board. A second printed circuit board has a plurality of layers and contacts the conductive enclosure. The first printed circuit board, the conductive enclosure and the second printed circuit board form a closed space within which the electronic elements are disposed. The first layer next to the conductive enclosure is an exposed copper layer grounded to protect the electronic elements from EMI.
Abstract:
Methods for fabricating an interposer, wherein the fence include the use of stereolithographic and molding processes. When stereolithography is used to fabricate the fence, a machine vision system that includes at least one camera operably associated with a computer may be used to control a stereolithography apparatus and facilitates recognition of the position and orientation of interposer substrates on and around which material is to be applied in one or more layers to form the fence. As a result, the interposer substrates need not be precisely mechanically aligned.