Abstract: An video signal processing circuit of a double deck VCR capable of preventing a deterioration of picture when dubbing, which includes a reproducing video cassette tape recorder and a recording video cassette tape recorder disposed in a single body, wherein the reproducing VCR transmits a luminance signal and a chrominance signal, respectively, to the recording VCR and includes a luminance reproduction processing circuit generating a high band detection signal to be transmitted to the recording VCR, and the recording VCR includes a first switch for switching an input signal and an output signal of a low pass filter for luminance signal in response to the high band detection signal so that the output of the low pass filter is outputted to a luminance signal recording processing circuit when a high band signal is detected and the input of the low pass filter is outputted when the high band signal is not detected, and a second switch for switching an input signal and an output signal of a band pass filter in resp

Abstract: A film transport mechanism for transporting film having perforations including a motor that drives sprockets for transporting the film in increments defined by a pull down stroke. In addition, the mechanism includes a pin element having at least one pin, the pin element being rotatable to a first position wherein the pin is inserted into an associated perforation to stabilize the film without contacting a perforation edge to generate a first sound level when the pull down stroke substantially equals a perforation pitch. Further, when the pitch is not equal to the pull down stroke, the pin contacts a perforation edge to generate a second sound level. The mechanism also includes a microphone positioned adjacent the pin element and the film for detecting a range of sound levels.

Abstract: An improved alert air conditioning control method for an air conditioner for enhancing a learning efficiency which is capable of significantly enhancing a learning efficiency of a user by providing a better air conditioning environment, whereby it is possible to increase an alert level of a user and improve an indoor environment. The method includes the steps of measuring and analyzing an electroencephalogram (EEG) of a testee during an operation of an air conditioner based on first, second and third set temperatures and a temperature variation width with respect to the first, second and third temperatures, computing a data of a temperature variation width with respect to the set temperature at which an alert level is highest, selecting an air current of the air conditioner having the highest alert level between a weak wind and a chaos wind, and controlling the operation of the air conditioner by using a data of the temperature variation width and an air current data selected.

Abstract: A speaker in which the inner peripheral face of a ring-shaped soft ferrite core is cemented to a cylindrical projection extending from a lower portion of a bowl-shaped frame. An outer peripheral surface of a co-axially disposed ring-shaped bond magnet is fitted into a recess of the frame. Two magnetic gaps are formed between facing surfaces of the ring-shaped bond magnet and the ring-shaped soft ferrite core. Two voice coils are mounted on a cylindrical bobbin and suspended from a vibratory diaphragm such that the voice coils are inserted into the magnetic gaps.

Abstract: A digital high definition television receiver equalizer system includes an input adaptive feed forward filter (FFF 20), a carrier recovery network (46), and a slicer (40) in addition to an adaptive decision feedback filter (DFF, 30) for removing intersymbol interference. At the beginning of a blind equalizing interval the FFF is not adapted and the DFF operates as a linear filter with adapted coefficients for equalizing post-ghosts. Afterwards in the blind interval the FFF coefficients are adapted blindly for equalizing pre-ghosts. In a subsequent decision-directed mode the slicer output is used for adapting both the FFF and DFF non-linearly.

Abstract: A systematically structured diagnostic for detecting, isolating, analyzing and reporting problems or faults in a central processing unit. The diagnostic causes the central processing unit to execute instructions, the instructions being selected such that the central processing unit, in executing the instructions, must use every data path and functional unit therein. Errors caused by particular instructions are correlated with the functional units or datapaths used by those instructions, to produce a list of possibly faulty datapaths and functional units. Test procedures, specifically designed to the possibly faulty datapaths and functional units, are then applied to the central processing unit to isolate which of the possibly faulty data paths or functional units are in fact faulty, which are then reported.

Abstract: A remote control transmitter comprising at least one transmission channel for transmitting a code word to a system controller and for operating system operational functions controllable thereby; a plurality of transmission channel groups, each group having at least one transmission channel therein; at least one switch for activation of the transmitter, said switch having an operational mode and a standby mode; means for transmitting the code word to the controller and activated upon transition of the switch from the operational mode to the standby mode; and, using the same switch or switches both for selecting the channel group and for transmitting channel commands.

Abstract: A method for checking wire bonding result of a ball grid array (BGA) package is disclosed. An electroconductive metal layer of gold or copper is grounded on a chip bonding portion of a printed circuit board (PCB) of the BGA package as well as on a passage extending between the chip bonding portion and the gate of the PCB. After a wire bonding step, a probe and a capillary of a wire bonding checking system contact with the gate and with a semiconductor chip respectively. Thereafter, an electric current is sent to the BGA package from the checking system so as to check whether the BGA package sends the electric current therethrough. When there is neither a lift bond nor a missing wire in the BGA package, the package will send the current. However, when there is either a lift bond or the missing wire in the BGA package, the package will not send the current.

Abstract: A synchronizing signal detecting apparatus for a digital video cassette recorder (DVCR), which can detect a more stable synchronizing signal by detecting the synchronizing signal in a parallel processing method includes input signal convertor for converting input serial data, a first head switching pulse and a first clock into parallel data, a second head switching pulse and a second clock, a vertical synchronizing signal detector and a block synchronizing signal detector for respectively detecting a vertical synchronizing signal and a block synchronizing signal from the parallel data, second head switching pulse and second clock output from the input signal converter, and a data former for outputting finally output data in accordance with synchronizing patterns using the parallel and second clock. This apparatus allows a synchronizing signal to be detected more precisely. Also, the acquisition of slipped data is facilitated by rearranging output data in the unit of sync blocks.

Abstract: A method for testing a semiconductor wafer processing step. An overlying electrical structure is created on a bare wafer to form a test wafer which simulates the surface contours of production wafers that will be exposed to the tested processing step. The overlying electrical structure of the test wafer is created using the same processing steps are used in manufacturing the overlying electrical structures of production wafers. Although the test wafers have the same surface contour as the production wafers they simulate, the test wafers are less expensive to manufacture because the test wafers do not include any underlying layers found in the production wafers which are not exposed during the tested processing step, and therefore the steps which form these layers can be omitted when making test wafers.

Abstract: A metal body having at least one vapor-deposited treatment layer overlying and adhered to at least one side of the metal body, and a layer of adhesion-promoting material overlying and adhered to at least one treatment layer, provided that when two treatment layers are deposited on one side of the body and the first layer is vapor-deposited zinc, the second layer is not vapor-deposited silica or alumina, the adhesion-promoting material being suitable for enhancing adhesion between the body and a substrate. Laminates comprising metal foils and at least one vapor-deposited treatment layer overlying and adhered to at least one side of the metal foil; a layer of adhesion-promoting material overlying and adhered to at least one vapor-deposited treatment layer; and a layer of an electrically non-conductive material overlying and adhered to the adhesion-promoting layer.

Abstract: A method and apparatus for measuring the flying height of a recording head that is separated from a rotating disk by an air bearing. The recording head has a trailing edge that extends from an interface of a substrate. The trailing edge has an embedded read/write element and an outer tip. The recording head is loaded into a flying height tester that can measure the distance between the disk and any point on the head. The flying height tester contains a transparent disk that is rotated to create an air bearing between the head and the disk. The outer tip is separated from the disk by an air bearing height h.sub.m. The read/write element is separated from the disk by an air bearing height h.sub.g. The substrate interface is separated from the disk by an air bearing height h.sub.i. The flying height tester measures the height h.sub.g to obtain the distance between the read/write element and the disk.

Abstract: A light-blocking apparatus for a liquid crystal monitor for a camcorder is disclosed including a coupling member fixed to a liquid crystal monitor body; a supporting member rotatably installed in the inner lower portion of the coupling member; a upper and lower light-blocking member rotatably installed in the inner upper portion of the supporting member; and one-side and other-side light-blocking members rotatably and elastically installed on the inner left and right sides of the liquid crystal monitor body.

Abstract: An improved semiconductor memory device and a data writing method thereof capable of preventing semiconductor memory breakage and written data error which occur when data are predominantly written on a certain address by evenly writing the data on each address of a memory device, which includes a data region for writing a data; and a counter region for counting the number that a data is written on the data region.

Abstract: An improved cooled air suction duct for refrigerator having a defrosted water receiving member integrally formed with a cooled air suction duct, thus improving the flow of the cooled air in the system and enhancing productivity, which includes a defrosted water receiving member disposed at a lower side of an evaporator for receiving a defrosted water; and a cooled air suction duct imbedded within an intermediate insulation wall for returning a cooled air to the evaporator, the cooled air suction duct being integral with the defrosted water receiving member.

Abstract: An improved operation state display apparatus and a displaying method thereof capable of displaying an operation state of an electric appliance with a shuttle switch and providing a more fashionable product by providing an improved display unit, which includes a shuttle switch for producing a certain code signal in accordance with its turn in leftward direction or rightward directions; a microprocessor for recognizing a code signal outputted from the shuttle switch, for outputting a control signal corresponding to the thusly recognized code signal, and for controlling a control object; and a display unit enabled by a control signal outputted from the microprocessor for displaying an operation state of the control object in accordance with an operation of the shuttle switch.

Abstract: A point-type radio controller using infrared rays facilitates an installation of a receiving sensor by arranging an infrared transmitter and an infrared receiver at right angle to each other, and accurately computes a coordinates-position of a designated point through double calculating coordinates value of a point in a constant time. The point-type radio controller using infrared rays includes a transmitting means for transmitting an infrared signal having a constant period, and having infrared diodes as a plurality of signal generators in the direction of Y-axis in order to achieve a constant angle; a receiving means for receiving the infrared signal by mounting infrared receiving sensors on a display device at a right angle to the infrared diodes in the direction of X-axis; and a controlling means for calculating coordinates-position of an indicated point by using an intensity difference between the infrared signals received by the receiving means, and displaying a calculated point on a display screen.

Abstract: A lifter device for a magnetic recording diskette which has a resilient, flexible, relatively rigid plastic sheeting, such as polyethylene terephthalate (PET). The lifter device curves upward from an inner surface of the casing to which it is affixed toward a pad which contacts the recording material within the diskette. The lifter maintains a desired amount of pressure against the pad over an extended range of operating conditions.