Abstract:
The semiconductor package including a semiconductor element 11 having a first face 21a and a second face 21b which is opposite to the first face 21a, an electrode 22 provided on the first face 21a, and a conductive lead 23 connected to the electrode 22 comprises an insulating film member 24 provided on the second face 21b for connecting the other end of the lead, the lead 23 is bent as oppose to a side face of the semiconductor element 11, and is connected each other with an elastic force between the electrode 22 and the film member 24, a bent part of the lead between the electrode 22 and the film member 24 turns to be a terminal part 23a. The circuit board has a connection means, connecting to the terminal unit 23a, and having an adequate size for placing the semiconductor package 11. The connection means is constituted of an accommodation groove part 46 or a frame part 50, and a plurality of pattern electrodes 47a, 47b, and the terminal part 23a is connected between the pattern electrodes 47a, 47b.
Abstract:
There is provided an improved image reader. In the image reader, light from an object is converted into an analog signal by a photoelectric converter. The signal is quantized by an A/D converter on the basis of top and bottom reference voltages to produce a digital picture signal. A digital picture signal corresponding to a dark current flowing to the photoelectric converter is stored in a memory as a dark current data. Also a digital picture signal corresponding to the optical strength of predetermined level is stored in another memory as a white level data. Then, the top and bottom reference voltages are produced which correspond to the top and bottom quantization-threshold values on the basis of the dark current and white level data, respectively. The top and bottom reference voltages are then respectively applied to the A/D converter to produce the digital picture signal without signal distortion.
Abstract:
An apparatus for scanning an image, comprising a main unit body casing, a first original platen having a transparent surface on which a light-reflective original is placed, a second original platen movable in a horizontal direction inside the main unit body casing upon which platen a light-transmissive original is placed, a light source that irradiates light to the first and second original platens, an image sensor, and an optical apparatus disposed inside the body casing, and which respectively passes reflected light from the original placed on the first original platen and light transmitted through the original placed on the second original platen to the image sensor.
Abstract:
A color television signal generating apparatus comprises a color-resolving striped filter, in a camera tube, for separating the output signal of the camera tube into required signals. The output of the camera tube is a superimposed signal comprising a direct wave signal containing signals of the three primary colors of said addition mixture color, and a high-band signal component comprising a group of modulated color signals resulting from an amplitude modulation of a carrier wave by the signals of two primary colors other than the primary color of the light transmitted through said first filter stripe, said carrier wave having a frequency equal to a space frequency determined by the number of said groups of filter stripes, and said carrier wave also having frequency components which are higher harmonics of the frequency of said carrier wave. The color television signal generating apparatus further comprises a first separation circuit for separating and deriving, out of the output signal of the camera tube, a fundamental wave component signal in which the carrier wave having the frequency equal to the space frequency is amplitude modulated, a second separation circuit for separating and deriving, out of the output signal of the camera tube, a second harmonics wave component signal in which a carrier wave having a frequency twice the space frequency is amplitude modulated, a multiplication circuit for multiplying the output signals of the first and second separation circuits, and a circuit for separating and deriving signals of two primary colors other than the primary color transmitted through the first filter stripe, responsive to the output signals of the multiplication means and the first separation circuit.
Abstract:
A signal processing circuit for a color television camera has filters supplied with a multiplex input signal. The direct wave signal includes a plurality of amplitude-modulated color component signals obtained from a camera tube of a color television camera. The tube filters the high-frequency components of the input signal. Detection and processing circuits detect the output signal of the high-pass filter and produce signals having restored DC components. The circuit provides gamma correction, white clipping, linear clipping, blanking signal mixing, or like signal processing with respect to the produced signal. A low-pass filter passes the input signal from the camera tube and filters the direct wave signal of the input signal. A processing circuit processes the output signals of the low-pass filter, and a matrix circuit matrixes the output signals of the detection and processing circuits to obtain three primary color signals. A color encoder provides a composite color video signal from the three primary color signals produced by the matrix circuit.
Abstract:
A circuit for stabilizing the black level in an output signal of a camera tube is employed in a color television camera. The camera tube has an optical filter with an optically black part extending in parallel with a beam scanning direction of the camera tube. The stabilizing circuit comprises a clamping circuit for clamping an output signal of the camera tube during a horizontal beam blanking period and for restoring a DC component of the output signal. A circuit responds to supplied sampling pulses during every vertical scanning period, for sampling and holding an output signal of the clamping circuit. A circuit feeds back a substantially negative holding voltage of the sampling and holding circuit, to the clamping circuit.
Abstract:
The semiconductor package including a semiconductor element 11 having a first face 21a and a second face 21b which is opposite to the first face 21a, an electrode 22 provided on the first face 21a, and a conductive lead 23 connected to the electrode 22 comprises an insulating film member 24 provided on the second face 21b for connecting the other end of the lead, the lead 23 is bent as oppose to a side face of the semiconductor element 11, and is connected each other with an elastic force between the electrode 22 and the film member 24, a bent part of the lead between the electrode 22 and the film member 24 turns to be a terminal part 23a. The circuit board has a connection means, connecting to the terminal unit 23a, and having an adequate size for placing the semiconductor package 11. The connection means is constituted of an accommodation groove part 46 or a frame part 50, and a plurality of pattern electrodes 47a, 47b, and the terminal part 23a is connected between the pattern electrodes 47a, 47b.
Abstract:
A circuit for stabilizing electron beam focusing is used for an electromagnetic focusing type camera tube having a high voltage generating circuit for supplying electrodes of the camera tube. A focusing current is supplied to an electron beam focusing coil of the camera tube. The focusing current supply circuit comprises an operational amplifier having an output terminal to which the focusing coil is connected. A detection resistor is connected between the focusing coil and an inverting input terminal of the operational amplifier. A first resistor is connected between the voltage source and a non-inverting input terminal of the operational amplifier. A second resistor is connected between a reference voltage source and the non-inverting input terminal of the operational amplifier.
Abstract:
In a tape carrier package applying a TAB technique, a flex rigid PWB is used as a tape carrier. A flexible portion is provided with a semiconductor connection terminal. An LSI is directly mounted to the flexible portion. A rigid portion is provided with an electrode for mounting a component and an electrode for an external input/output.
Abstract:
A horizontal deflection circuit in a television device comprises a circuit for generating a saw-tooth waveform current for horizontal deflection, a horizontal coil supplied with the saw-tooth waveform current thus generated, a saturable reactor type linearity coil having a winding connected in series with the horizontal deflection coil, and a circuit for substantially supplying a correction current to the winding of the linearity coil. The correction current thus supplied varies in response to a temperature variation so that the inductance value of the linearity coil will become constant irrespective of the temperature variation.