Abstract: In a high-frequency signal level detection apparatus for detecting an inputted signal level of a high-frequency signal, an AGC circuit executes an AGC on an intermediate frequency (IF) signal obtained by converting a frequency of a received high-frequency signal, using an RFAGC value and an IFAGC value for controlling gains of the high-frequency signal and the IF signal, respectively, based on the IF signal so that an output level of the IF signal is substantially constant. A controller previously measures first and second relational data, indicating an RFAGC value and an IFAGC value relative to the inputted signal level of the received high-frequency signal, respectively, measures the RFAGC and IFAGC values when a high-frequency signal to be measured is received, and detects the inputted signal level of the received high-frequency signal using the measured first and second relational data based on the measured RFAGC and IFAGC values.

Abstract: An indoor unit of an in-ceiling mount type air conditioner including a box-shaped housing having a top plate portion, a side plate portion and an opening portion at the lower portion thereof, a face panel detachably mounted on the opening portion of the housing, an indoor heat exchanger through which the inside of the housing is compartmented into a primary side and a secondary side, and an air blower secured to the top plate portion of the housing that faces the primary side, has a primary side heat insulating material is provided to the top plate portion so as to face the primary side of the housing and a secondary side heat insulating material provided to the side plate portion so as to face the secondary side of the housing, wherein the primary side heat insulating material is provided with an opening portion through which the air blower is fixed to the top plate portion.

Abstract: A carrier recovery apparatus capable of detecting a phase error of modulation signal by a simple calculation, reducing the circuit scale, and improving the frequency capture characteristic and phase jitter characteristic is presented. This carrier recovery apparatus comprises a symbol estimating unit for estimating the transmitted symbol, a phase error detector for generating a normalized phase error signal on the basis of the estimated symbol and reception signal, a loop filter for filtering the phase error, and a numerical control oscillator controlled by the loop filter.

Abstract: A through section shielding construction is disclosed in which a partitioning wall defines a slit-like opening extending along a lateral direction as a moving passage of a penetrating member relative to the partitioning wall, and a plurality of shielding plates for closing the slit-like opening are juxtaposed along the slit-like opening as being suspended pivotally to be pushed open one after another by the penetrating member moving along the slit-like opening. The shielding plates are provided as adjacent pairs, and there is provided an operative coupling mechanism for operably coupling, with each other, two shielding plates constituting each pair in such a manner that in association with one of the paired shielding plates being pushed open in one direction by the penetrating member, the other shielding plate is pivotally opened in the opposite direction to the one direction.

Abstract: In a high-frequency signal level detection apparatus for detecting an inputted signal level of a high-frequency signal, an AGC circuit executes an AGC on an intermediate frequency (IF) signal obtained by converting a frequency of a received high-frequency signal, using an RFAGC value and an IFAGC value for controlling gains of the high-frequency signal and the IF signal, respectively, based on the IF signal so that an output level of the IF signal is substantially constant. A controller previously measures first and second relational data, indicating an RFAGC value and an IFAGC value relative to the inputted signal level of the received high-frequency signal, respectively, measures the RFAGC and IFAGC values when a high-frequency signal to be measured is received, and detects the inputted signal level of the received high-frequency signal using the measured first and second relational data based on the measured RFAGC and IFAGC values.

Abstract: A carrier recovery apparatus capable of detecting a phase error of modulation signal by a simple calculation, reducing the circuit scale, and improving the frequency capture characteristic and phase jitter characteristic is presented. This carrier recovery apparatus comprises a symbol estimating unit for estimating the transmitted symbol, a phase error detecting means for generating a normalized phase error signal on the basis of the estimated symbol and reception signal, a loop filter for filtering the phase error, and a numerical control oscillator controlled by the loop filter.

Abstract: A set-top box is configured to mount therein a security device which stores security information on a broadcasting entity, and extracts transmission information for receiving a broadcasting signal modulated from a control signal from a head end. In the set-top box, it is detected that the security device is not mounted into a receiver, the demodulation mode for the broadcasting signal and/or the frequency of the broadcasting signal is changed to retrieve the broadcasting channel on which the transmission information on the broadcasting signal is transmitted, and then, the broadcasting signal on the retrieved broadcasting channel is received. When it is detected that a demodulator is synchronized with the broadcasting signal, the transmission information on the broadcasting channel is extracted from the demodulated broadcasting signal, the broadcasting signal is received based on the extracted transmission information on the broadcasting signal.

Abstract: A digital broadcast receiver for receiving a digital modulation signal of the present invention includes channel selection means inputting a digital modulation signal of a radio frequency band and frequency converting a desired digital modulation signal into a designated intermediate frequency signal; oscillation means for generating a local oscillation signal used for frequency conversion at the channel selection means; oscillation frequency control means for controlling a frequency of the local oscillation signal at the oscillation means; phase noise characteristic control means for improving a phase noise characteristic of the local oscillation signal generated at the oscillation means; filter means for extracting the intermediate frequency signal selected at channel selection means; orthogonal detection means for orthogonally detecting the intermediate frequency signal extracted at the filter means; A/D converter means for converting the analog output of the orthogonal detection means into a digital signa

Abstract: A receiving apparatus is presented, in which a channel frequency can be selected over a wide band with an increased attenuation at an image frequency and/or at a local oscillation frequency by including a tunable filter having a following construction. Microstrip lines are connected between either one of the input or the output terminal or both of the input and output terminals of the tunable filter; a plurality of resonant circuits are formed by each of a plurality of coils and a plurality of variable capacitance diodes; and the coils are electromagnetically coupled and where a voltage applied to each cathode of each of a plurality of variable capacitance diodes through each of a plurality of resistors is controlled to tune a frequency to be received.

Abstract: A plurality of wires are stretched in parallel through wire supplying-winding apparatuses and wire-tension adjusting apparatuses. A semiconductor-crystal bar is affixed on an ascent/descent table via a feeding table. The ascent/descent table is capable of being driven to ascend or descend by the ascent/descent apparatus. The wires and the semiconductor-crystal bar are dipped into a high-insulation oil, and discharging is created therebetween to perform cutting. If the resistance of the semiconductor-crystal bar exceeds 1 .OMEGA..multidot.cm, used inert gas is filled into a space within the interior space of an airtight vessel. Then, the high-insulation oil is heated by heaters and is kept at a temperature higher than 150.degree. C. to reduce the resistance of the semiconductor-crystal bar. Therefore, cutting is easily performed. The used inert gas can prevent fire from occurring due to the flaming of the high-insulation oil.

Abstract: There is disclosed an odor concentration measuring device which can objectively and easily measure an odor concentration. The odor concentration measuring device 1 is provided with an injector having a cylinder 3 and a piston 5, and an odor sensor 11 is fixed to an inner wall 3a of the cylinder 3. The odor sensor 11 measures the odor of air inside the cylinder 3, and outputs a voltage V in accordance with the odor intensity. A control box 7 provided on the outer periphery of the cylinder 3 is provided with an electronic control circuit, which allows a blue LED 9b to light instead of a red LED 9r when the voltage V reaches a value corresponding to the odor intensity which cannot be perceived by people. By reciprocating the piston 5, the sample air is diluted. The odor concentration can be measured by the dilution magnification at which the lighting state of the LED 9r or 9b is changed.

Abstract: An odor intensity index measuring apparatus is provided for measuring odor intensity objectively and easily for various types of odor. Sample air is diluted with odorless air at a desired scale factor in a dilution unit. The diluted air is fed through an air duct to an odorometer. Corresponding to the intensity of odor, voltage V is emitted from the odorometer. In an electronic control unit, the scale factor at which sample air is diluted by the dilution unit is gradually increased. The dilution scale factor which is reached when the output voltage from the odorometer becomes lower than the specified value indicating the odorless condition is displayed on a liquid crystal display. Like the conventional three bag odor comparison method, the odor intensity index can be measured in the same manner for various types of odor. Different from the conventional method, the degree of the odor intensity can be measured objectively without relying on the human sense of smell.

Abstract: A radio transmission apparatus for TV game machine, a radio transmission adaptor connectable to a main body of existing TV game machine, and a TV game cassette provided with a radio transmitting antennae are disclosed as radio transmission system for TV game machine. According to the radio transmission system, radio frequency output signals representing game data contained in TV game cassette is amplified and transmitted by radio to feeder or indoor antennae connected to TV set having no special receiving portion to receive the transmitted game data, thereby attaining wireless transmission of game data.

Abstract: A junction structure for electrically connecting a plurality of connection conductors at one end of a flat cable, which includes a plurality of electrical conductors arranged parallel in an insulating material, and electrical conductors of a plurality of lead wires. The junction of the flat cable comprises a first fixing member formed integrally with one of the flat cable and the lead wires, and a second fixing member fixing the other of the flat cable and the lead wires to the first fixing member to thereby temporarily connect the respective corresponding electrical conductors of the flat cable and the lead wire.

Abstract: A switch device comprises a dual push-push type switch device wherein each switch includes a cam protrusion that engages a downwardly inclined end portion of a lock pin when the switch is in a release position so that in the event of the depression of both switches simultaneously the top end portion of each of the lock pins slides over the cam protrusion of a respective operating piece.

Abstract: A method of producing a cracker from a raw material such as grain such as unhulled rice, or artificial rice, composite raw material formed in a chip-shape, or the like is disclosed. It comprises steps of compressing and heating for a predetermined time the raw material already processed to some extent to advance and contained within a hermetically closed chamber defined in upper and lower baking molds heated, moving instantaneously the upper mold finely up and down to spread the raw material on a bottom surface of the lower baking mold, and in the foregoing state, compressing and heating the raw material again, and expanding instantaneously the compressed and heated raw material at a time when the upper baking mold starts moving upwardly to remove the compression, thereby shaping the material in a cracker of a desired form in a self-sustaining structure. An apparatus for carrying out the method is also disclosed.

Abstract: In a column mounted switching device mounted on a steering column of a vehicle, a revolution member is supported on a base plate rotatably about a first revolution axis in a first direction, an operation lever is supported on the revolution member rotatably about a second revolution axis directed at a substantially right angle to the first revolution axis, and first switch means is mounted on the base plate such that it is operated in a direction parallel to the second revolution axis by the operation lever through the revolution member. Accordingly, a distance between the first revolution axis and an operation portion of the first switch means is kept sufficiently long so that the first switch means can be operated reliably.

Abstract: Proposed models are used for forming into destined shapes liquid, slurry, soft, sheet or lump materials, and are provided with endurance for many times of use and excellent permeability. A basic feature is that aggregates are ferrous or non-ferrous metallic grains and ceramic grains, to which a binder contained in evaporating or consumable substance is added and kneaded, and sintered. The mode has a close hardened layer scattered with metallic oxides on at least a shell. The hardened layer has fine air vents in its thickness. The whole body of a model is 5 to 60% of porosity and more than 100 Kg/cm.sup.2 of compression strength.

Abstract: A self-cancelling mechanism is mounted on a steering column of a vehicle, is used for a turn-signal device signalling a change of a running direction of the vehicle and switches off turn-signal lamps by a returning rotation of a steering wheel. A ratchet is pivotally supported to a bracket pivoted to the steering column and is operated by a driver, and a cancelling cam body is arranged between the ratchet and the steering shaft. The ratchet is rotatable from its neutral position against the bracket up to a pair of rotation positions and is forced to the neutral position by an elastic member so that, even if the ratchet is suddenly returned back to the neutral position by the rotation of the steeling shaft in an anticancelling direction, striking noise does not occur.

Abstract: Operation members for a turn-signal switch signalling a change of an advance course of an automobile and operation members for a hazard switch signalling an emergency situation of the automobile are arranged close to one another on the same plane, the former is of a knob type swingingly operated and the latter is of a push button type repeatedly operated. Both the switches possess in common an insulator.Accordingly, both the switches are able to be arranged reasonably on a steering column and improved in operations ability. In addition, connection among contacts and fixed to the insulator is able to be simplified.