摘要:
A differential/absolute value image is derived by calculating an absolute value of each pixel in an image produced by subtracting a background image from an input image. A mean value and a variance of a pixel in the differential/absolute value image are calculated from the levels of pixels included in a small region on the differential/absolute value image which has the pixel located at the center thereof. The calculated mean value and variance of the pixel are used to distinguish whether the pixel is a pixel included in a moving object existing region, a background region, or an input image sudden change region. A method of updating the background image is changed in accordance with whether the pixel is a pixel included in the moving object existing region, the background region, or the input image sudden change region.
摘要:
A lead frame for a semiconductor device and a method for manufacturing the semiconductor device using the frame, the lead frame comprising a dice pad, inner leads, tie bar, outer leads and a thin metal layer of lead which is hard to melt and is easily transformed formed on the surface of that portion of the inner leads, outer leads and the tie bar which is not covered with the sealing resin. In injection molding of a resin material on the lead frame with a semiconductor chip therein, the gap between the lead frame and the mold is filled while the thin metal layer is transformed by the clamping pressure, so that the bur may be prevented from being generated.
摘要:
A semiconductor module includes: an insulating plate; a plurality of metal patterns formed on the insulating plate and spaced apart from each other; a power device chip solder-joined on one the metal pattern; a lead frame solder-joined on the metal pattern to which the power device chip is not solder-joined, and on the power device chip; an external main electrode provided to an outer casing, and joined by wire bonding to the lead frame above the metal pattern to which the power device chip is not joined; and a sealing resin formed by potting to seal the power device chip, the lead frame, and the metal patterns.
摘要:
A power module includes a power device having a top electrode and a bottom electrode, an upper metal block connected to the top electrode, a lower metal block connected to the bottom electrode, a resin covering the power device, the upper metal block and the lower metal block so as to expose a upper surface of the upper metal block and a lower surface of the lower metal block, an upper terminal-cooling power-applying block connected to the upper metal block, a lower terminal-cooling power-applying block connected to the lower metal block, an upper terminal connected to the upper terminal-cooling power-applying block, a lower terminal connected to the lower terminal-cooling power-applying block, and a insulating case covering all elements so as to expose a part of the upper terminal and a part of the lower terminal.
摘要:
The semiconductor device according to one of the embodiments of the present invention includes a metal block having first and second main surfaces and defining a recess on the first main surface. It also includes a semiconductor chip received within the recess of the metal block and mounted on the metal block. Further, a first terminal electrically connected with the semiconductor chip is provided, and a second terminal electrically connected with the metal block is also provided.
摘要:
An image capture and transmission system includes first and second imaging devices. A timing signal generator produces a timing signal. A common drive circuit operates for driving the first and second imaging devices at equal timings determined by the timing signal. A first signal processor operates for converting an output signal of the first imaging device into first digital video data. A second signal processor operates for converting an output signal of the second imaging device into second digital video data. The first digital video data and the second digital video data are processed into a stream of packets. The packet stream is transmitted to, for example, a network.
摘要:
A communication circuit transmits the digital video signal to a transmission line and receives a clock signal and timing data transmitted through the transmission line. The timing data indicates a communication timing. A timing signal generation circuit generates timing signals from the detected clock signal to control the imager, the a/d converting circuit, the signal processing circuit, and the communication circuit. A communication control circuit detects a communication timing from the timing data, judges whether the communication timing is detected within a predetermined condition (communication error), and controls the timing signal generation circuit to stop transmitting the digital video signal when the communication timing is not detected within the predetermined condition to prevent a fail in transmitting the video data. A shutter interval of the imager is further controlled toward a constant shutter interval in response to the communication error. The video signal is stored in a memory in response to the communication error and read if the communication error eliminated. The communication error is displayed. A system control signal indicative of data transmission period is generated in response to a received cycle start packet in accordance with the obtained data rate and channel timing.
摘要:
An image capture and transmission system includes first and second imaging devices. A timing signal generator produces a timing signal. A common drive circuit operates for driving the first and second imaging devices at equal timings determined by the timing signal. A first signal processor operates for converting an output signal of the first imaging device into first digital video data. A second signal processor operates for converting an output signal of the second imaging device into second digital video data. The first digital video data and the second digital video data are processed into a stream of packets. The packet stream is transmitted to, for example, a network.
摘要:
The two-way transmissions are performed between a first bus and a usual portal of a first full-duplex 3-portal bridge and between a second bus and a usual portal of a second full-duplex 3-portal bridge, respectively. The one-way transmission of an isochronous packet and an asynchronous stream packet is performed between transmission and reception portals of the first full-duplex 3-portal bridge and reception and transmission portals of the second full-duplex 3-portal bridge. The first full-duplex 3-portal bridge and the second full-duplex 3-portal bridge perform a conversion between the asynchronous stream packet and an asynchronous packet if necessary.
摘要:
In a lead frame, L-shaped support tapes are applied to inner leads and suspension leads. Ends of the support tapes are overlapped with each other at the suspension leads to form, together, a rectangular ring shape. Since the support tapes are L-shaped, when the overlapped portions are positioned at the suspension leads, there are only two overlapped portions of the support tapes at the suspension leads. Thus, the number of overlapped portions requiring accurate alignment is reduced. Moreover, the L-shaped support tapes can be cut from the material for the support tape with higher efficiency.