Abstract: Methods, systems and computer program products for implementing a polling process among one or more flash memory devices are described. In some implementations, the polling process may include sending a read status command to a flash memory device to detect the ready or busy state of the flash memory device. A status register may be included in the flash memory device for storing a status signal indicating an execution state of a write (or erase) operation. A solid state drive system may perform the polling process by reading the status register of the flash memory device.

Abstract: A semiconductor device that includes a module under test that is integrated with the semiconductor device, that receives an input signal from a test module, and that provides an output signal to at least one output terminal based on the input signal. An error detecting module is integrated with the semiconductor device, samples values of the output signal, and outputs the sampled values to the test module.

Abstract: A card type optical transceiver module includes: an optical receptacle having a photoelectric component for converting electrical signals into optical signals and optical signals into electrical signals, an electrical connector electrically connected to an electronic device, a motherboard and a childboard which are separately formed and electrically connect the optical receptacle and the electrical connector, a first cutaway portion provided in the motherboard, and a group of pins electrically connect the boards. The optical receptacle is supported in a housing forming an outer contour of the module. The first cutaway portion accepts the optical receptacle inside to avoid interference between the optical receptacle and the motherboard. The childboard is supported by the housing, and the motherboard is supported by the group of pins and incorporated in the housing, and the electrical connector is provided on an edge surface of the housing.

Abstract: A card type optical transceiver module includes: an optical receptacle having a photoelectric component for converting electrical signals into optical signals and optical signals into electrical signals, an electrical connector electrically connected to an electronic device, a motherboard and a childboard which are separately formed and electrically connect the optical receptacle and the electrical connector, a first cutaway portion provided in the motherboard, and a group of pins electrically connect the boards. The optical receptacle is supported in a housing forming an outer contour of the module. The first cutaway portion accepts the optical receptacle inside to avoid interference between the optical receptacle and the motherboard. The childboard is supported by the housing, and the motherboard is supported by the group of pins and incorporated in the housing, and the electrical connector is provided on an edge surface of the housing.

Abstract: An optical waveguide module in which transmitted signal light emitted from a laser light-emitting element 4 passes through a first optical waveguide 3a and a second optical waveguide 3b to strike a transmitting/receiving medium 5 such as an optical fiber, and a signal light from the transmitting/receiving medium 5 passes through the second optical waveguide 3b and is received by a light-receiving element 7, the optical waveguide module comprising, a first light-blocking resin covering part 12, which covers a light-emitting coupling part 11a coupling the laser light-emitting element 4 and the first optical waveguide 3a, and a second light-block resin covering part 14, which covers a light-receiving coupling part 13a coupling the light-receiving element 7 and the second optical waveguide 3b.

Abstract: An optical waveguide module in which transmitted signal light emitted from a laser light-emitting element 4 passes through a first optical waveguide 3a and a second optical waveguide 3b to strike a transmitting/receiving medium 5 such as an optical fiber, and a signal light from the transmitting/receiving medium 5 passes through the second optical waveguide 3b and is received by a light-receiving element 7, the optical waveguide module comprising, a first light-blocking resin covering part 12, which covers a light-emitting coupling part 11a coupling the laser light-emitting element 4 and the first optical waveguide 3a, and a second light-block resin covering part 14, which covers a light-receiving coupling part 13a coupling the light-receiving element 7 and the second optical waveguide 3b.

Abstract: An installation structure for positioning and holding an optical fiber by means of a V-shaped groove formed on a substrate is disclosed. The V-shaped groove is divided into a positioning section and an alignment fixing section. The positioning section has groove width and depth for allowing the optical fiber to have a contact therewith. The alignment fixing section has groove width and depth larger than those of the positioning section to an extent for not allowing the optical fiber to have a contact therewith, when the optical fiber is disposed on the V-shaped groove.

Abstract: An optical communication module comprises an optical communication substrate provided with planar divided waveguides which are optically coupled with a light-receiving device for an optical communication, a light-emitting device for the optical communication, and another light-receiving device for monitoring a outputted light-power, wherein the planar divided waveguides have such a configuration that X-shaped branch waveguides are divided by a blind slit at a crossing thereof so that the crossing is removed, and an optical filter inserted into the blind slit. In the aforementioned optical communication module, the light-receiving device for monitoring the outputted light power can be allocated remote from as well as near the light-emitting device for the optical communication, hence a degree of freedom in mounting parts can be heightened.

Abstract: A structure shielding stray light at an optical waveguide module and an optical transceiver module used this structure, in which stray light circulated from an laser diode (LD) to a photo diode (PD) for receiving optical signals is shielded and the deterioration of the receiving sensitivity caused by the stray light can be prevented and improved, are provided. At the optical waveguide module used this structure, the upper surface of a waveguide substrate covered with a waveguide clad is covered with a metal deposition except an LD mounting area and a V shaped groove for mounting an optical fiber. The metal deposition being made of, for example, Au or WSi has a characteristic that does not make light of a wavelength band used in optical communication penetrate and reflects the light having the wavelength band used in the optical communication. The bottom surface and the side surfaces of the waveguide substrate are also covered with the metal deposition except a waveguide core part.

Abstract: An optical coupling system has a semiconductor laser ("LD") element and an optical fiber to be optically coupled with the LD element, the optical coupling system being filled with optically transparent gel resin with a refractive index higher than that of the air and lower than that of the optical fiber, the surface of the gel resin may be covered with a moisture-blocking resin.

Abstract: There is provided a coating stripper for optical fibers comprising a pair of clamp members each having a matching surface provided with a coating cutting edge, a coating pinching section and a coating holding section arranged in line on said matching surface with said coating pinching section located between said coating cutting edge and said coating holding section, any neighboring ones of said coating cutting edge, said coating pinching section and said coating holding section being contiguous with each other, each of said pair of coating cutting edges, said pair of coating pinching sections and said pair of coating holding sections being swingable relative to each other, both of said pair of coating pinching sections being made of a hard material, at least either of said pair of coating holding sections being made of a soft material and provided with a heater arranged in it.

Abstract: A hydraulic damper includes a cylinder, a piston slidably disposed in the cylinder and partitioning the interior of the cylinder into first and second oil chambers, a rod secured to the piston and extending through the first chamber to the outside, and a damping force generating valve mechanism provided in the cylinder and at one end of the second oil chamber. The valve mechanism comprises a bottom member defining an annular valve seat thereon, a flexible valve disc cooperating with the valve seat, and a novel generally tubular valve guide.

Abstract: A metal container is deformed to have a sheared portion in a part of the wall thereof, a projecting portion formed adjacent to the sheared portion and outwardly projecting from the wall of the container, the projecting portion having a fractured side surface and the dimension of the projecting portion in a direction transverse to the side surface increasing in a direction outwardly of the container. A gas introducing passage thereby is formed to extend along the sheared portion and the fractured side surface and through the wall of the container.