Abstract:
The present invention provides an electronic device having high insulating reliability, in which metal portions of a circuit are not electrically conductive with each other via an adhesive layer even when the electronic device is used in high-temperature low-humidity conditions or high-temperature high-humidity conditions, and provides a production method for the electronic device, and a semiconductor device comprising the electronic device. In the electronic device in which a circuit formed by pattern formation of metal portions is attached via an adhesive layer to an insulating base, the adhesive layer, which contacts adjacent metal portions, is divided. Typically, the electronic device is one of a lead frame having a lead frame fixing tape, a TAB tape, and a flexible printed circuit board.
Abstract:
A refresh counter circuit generating a row address during refresh operation for the memory device which has a normal area for storing data bits and a parity area for storing parity bits, including; n-stage counter which generates the row address corresponding to an address space of the normal area represented by n bits and the parity area represented by m (m
Abstract:
The present invention aims to provide an electric connector which makes it possible to connect easily, hard to separate and enables to maintain good electric connections. The electric connector of the present invention comprises plural contacts 30 each including a contact point 31 contacting each of the plural terminals and an elastic arm part contiguous to the contact 31 and a housing 40 including a reception recess 41 retaining the one end of the circuit board, and attachment recesses 42 for attaching each of the plural contacts, a cover part 43 being laid down toward a direction of insertion of the circuit board, and a pressure part 44 being contiguous to the cover part 43 and being rotatably disposed opposite to the plural contacts 31, wherein the pressure part 44 protrudes into the reception recess 41 as the cover part 43 is laid down.
Abstract:
A refresh counter circuit generating a row address during refresh operation for the memory device which has a normal area for storing data bits and a parity area for storing parity bits, comprising; n-stage counter which generates the row address corresponding to an address space of the normal area represented by n bits and the parity area represented by m (m
Abstract:
Disclosed is a semiconductor memory device including an on-chip ECC circuit and having a data retention mode which includes, in the order of state transition, an encoding state EEST by an error correction circuit in which the error correction circuit carries out calculation of parity bits of data of the memory cells, a burst self-refresh state BSST in which the memory cells are self-refreshed in a burst with a period shorter than in ordinary self-refresh, a power-off state PFST in which an internal power supply circuit is partially turned off, a power-on state PNST in which the internal power supply circuit, partially turned off, is turned on, and a decoding state EDST by the error correction circuit in which the error correction circuit corrects errors of the memory cells. In case a command for exiting from the data retention mode in the encoding state, transition may be made to an idle state IST so that re-entry may be made from the decoding state EDST to the BSST.
Abstract:
A plate voltage generation circuit comprises: first and second differential circuits (11a, 11b) supplied with a reference voltage (VREF) and an output voltage (VOUT), respectively; a push-pull output circuit (3), connected to the first and second differential circuits, for generating the output voltage; and first and second dead-band control circuits, connected to the first and second differential circuits, respectively, for changing the width of a dead band of the output voltage in accordance with a high level or a low level of dead-band control signals (Sa, Sb) externally supplied.
Abstract:
An organopolysiloxane, a hydrolyzable group-bearing methylpolysiloxane, a thermal conductive filler, and a curing agent are blended to form a silicone rubber composition which is minimized in viscosity or plasticity increase and remains effectively moldable and workable even when loaded with a large amount of the thermal conductive filler. It cures into a silicone rubber part having a high thermal conductivity.
Abstract:
A compact receptacle for mating connection with a complementary coaxial plug connector. The receptacle is in use to be mounted on a mobile phone for switching a signal line from an internal antenna to a vehicle's external antenna when placed on a cradle in a vehicle in mating connection with the plug connector on the cradle. The receptacle has a dielectric mold carrying an outer conductor shield fitted on top of the mold, a single spring member, and a single fixed contact member. The conductor shield includes an electrode socket for connection with an outer conductor tube of the plug. The spring member integrally carries a center electrode for connection with a center conductor post of the plug, and a movable contact which forms a normally-closed switch with a fixed contact on the fixed contact member for the above signal switching.
Abstract:
A linear actuator can obtain a roughly fixed load within a stroke range. The linear actuator comprises a fixed element, comprising a yoke and a magnet which is magnetized in the radial direction, and a moving element, comprising an electromagnetic coil and a bobbin which surrounds the magnet. A spring is provided for applying a force acting in opposition to the thrust direction acting on the moving element. A constant load stroke area is provided so that the characteristics of the opposite force of this spring balance the characteristics of the thrust force acting on the moving element. The constant load stroke area is an area where one end of the coil in the stroke direction is located in an outside position from one end of the magnet in the stroke direction, and the other end of the coil in the stroke direction is located in an inside position from both ends of the magnet in the stroke direction.
Abstract:
A device to perform tone generation while efficiently using a broad bit width bus and essentially eliminating the delay from the request for tone expression until its expression. An arithmetic processing device that generates tones reads the data all at once from a memory in which tone data is stored. This is set so that the delay time from when there is a request for tone generation until the tone is actually generated and expressed is negligible.