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Showing papers by "Samsung published in 1991"


Patent
28 Jan 1991
TL;DR: In this article, a portable lightweight combination laptop and pad computer has a display mounted on a main housing for movement between a closed position and an open position, where a keyboard is covered by the undersurface of the display and the display viewing surface remains visible so that the computer may be used in the pad mode with a conductive stylus for data and command entry.
Abstract: A portable lightweight combination laptop and pad computer has a display mounted on a main housing for movement between a closed position and an open position. In the closed position, a keyboard is covered by the undersurface of the display and the display viewing surface remains visible so that the computer may be used in the pad mode with a conductive stylus for data and command entry. In the open position, the keyboard is exposed so that the computer may be used in a laptop or desk top mode, or in a combined mode including the pad mode. The display is mounted to the housing by a four bar hinge mechanism, and a pair of latches are provided approximately mid-way between the front and rear portions of the housing along the side margins to securely latch the display in the closed position for storage, transit or use in the pad mode. A removable power pack, which attaches to the rear of the housing, carries battery power and a charging circuit for supplying power to the computer elements contained within the housing.

200 citations


Patent
Chang-yeol Seong1
17 May 1991
TL;DR: In this paper, a TV signal receiving system is proposed to tune a broadcasting frequency of a desired channel after receiving a TV signals, which converts the TV signal into an intermediate frequency having a frequency higher than the maximum frequency in a TV broadcasting frequency band and then converts again the frequency of the signal into another intermediate frequency in conventional TV systems.
Abstract: A TV signal receiving system, in order to tune a broadcasting frequency of a desired channel after receiving a TV signal, converts the TV signal into an intermediate frequency having a frequency higher than the maximum frequency in a TV broadcasting frequency band and then converts again the frequency of the signal into another intermediate frequency in conventional TV systems so as to improve the rejection characteristics of image and IF signals. The system comprises a first converter for tracking a desired channel frequency from a TV RF signal and converting the frequency into a first IF of 2 GHz, a band-pass filter of the 2 GHz IF for filtering only the first IF frequency signal in the first converter, and a second converter for converting the filtered first IF into 45 MHz of the conventional TV IF.

109 citations


Patent
Chang-yeol Seong1
24 Sep 1991
TL;DR: In this article, the authors propose a device for converting a radio frequency signal directly to a baseband signal, which includes a receiving section having a tuner and a phase-locked loop.
Abstract: A device for converting a radio frequency signal directly to a baseband signal includes: a receiving section having a tuner for providing a tuned radio frequency signal and a phase-locked loop for providing a phase-locked signal in response to the tuned radio frequency signal; a frequency oscillating section having a voltage controlled oscillator for providing a specific frequency signal, with a same phase and frequency as the tuned radio frequency signal, in response to the phase-locked signal and a control voltage, and a phase comparator providing the control voltage by comparing the phase of the tuned radio frequency signal and the phase of the specific frequency signal; a baseband section for producing the baseband signal by mixing the tuned radio frequency signal and the specific frequency signal; and a gain control section generating a gain control signal fed back to the baseband section and a delayed gain control signal fed back to the receiving section.

91 citations


Patent
06 Jun 1991
TL;DR: In this article, a portable computer having a standby power mode of operation has a bay for receiving a portable removable disk drive, which has a pair of slots engageable with parallel guide rails in the receiver, and a notch engagingable with a retractable latch normally biased in the direction of the notch.
Abstract: A portable computer having a standby power mode of operation has a bay for receiving a portable removable disk drive. The drive has a pair of slots engageable with parallel guide rails in the receiver, and a notch engageable with a retractable latch normally biased in the direction of the notch. A switch adjacent one of the rails generates a standby signal for the computer whenever the drive is inserted into the bay or moved in the ejection direction after installation. An ejector mechanism retracts the latch and an auxiliary locking pivot to release the drive for removal. The ejector also provides an ejection force which moves the drive a sufficient distance externally of the bay to permit the drive to be grasped by the user for complete removal. A grounding contact engageable with a similar contact on the drive provides a static discharge path for the drive prior to electrical interconnection with the computer.

91 citations


Patent
Han-Gyo Lee1
24 Dec 1991
TL;DR: In this article, an optional cassette can be used for an electrophotographic process engine, which occupies a minimum installation space and provides easy removal of jammed paper by using a pick up roller for picking up a paper.
Abstract: An optional cassette can be used for a electrophotographic process engine which occupies a minimum installation space and provides easy removal of jammed paper. A lower surface of the electrophotographic process engine is joined in steps with an upper surface of the optional cassette, and the the electrophotographic process engine comprises a second paper cassette and a second transmission passage formed vertically to a pull of paper in the second paper cassette. The optional cassette comprises an optional cassette module having a paper cassette slot for inserting a first paper cassette, and a pick up roller for picking up a paper form an uppermost paper of a paper pile in a position near the paper cassette slot and in the upper side of the option cassette module. A transmission unit, installed rotatably to the optional cassette with hinges under the second paper cassette 15, has a first transmission passage formed vertically to a pull of the first paper cassette and is connected with a second transmission passage.

79 citations


Patent
Moon Jieemiyun1
11 Jun 1991
TL;DR: In this article, an electric dust collector includes a plurality of alternately arranged collecting units and accelerating units forming air flow passages therebetween, each accelerating unit has a hole there-through, and wires extending across the hole in a direction perpendicularly to the direction of the air flow.
Abstract: An electric dust collector includes a plurality of alternately arranged collecting units and accelerating units forming air flow passages therebetween. Each accelerating unit has a hole therethrough, and a plurality of wires extending across the hole in a direction perpendicularly to the direction of the air flow. The accelerating units and wires are charged with the same polarity, and the collecting units are charged with an opposite polarity.

78 citations


Patent
Gu S. Kim1
09 Sep 1991
TL;DR: In this paper, a semiconductor chip bonding process is disclosed, and the process comprises the steps of forming a first Au ball using a wire ball bump bonding apparatus, stacking a second Au ball on the first AU ball, and bonding the chip to a substrate, wherein the conventional complicated BUMP manufacturing process is omitted due to the chip bonding technique during the assembling process.
Abstract: A semiconductor chip bonding process is disclosed, and the process comprises the steps of forming a first Au ball using a wire ball bump bonding apparatus, stacking a second Au ball on the first Au ball, stacking a Pb ball on the second Au ball using the wire ball bump bonding apparatus, and bonding the chip to a substrate, wherein the conventional complicated BUMP manufacturing process is omitted due to the CHIP BONDING technique during the assembling process, so that the formation process is shortened and the defect rate during the chip bonding is minimized, thereby the manufacturing cost can be saved.

71 citations


Journal ArticleDOI
B.W. Lee1, Bing J. Sheu
TL;DR: This modified Hopfield network has been successfully applied to the construction of analog-to-digital converters with optimal solutions and experimental results on the voltage transfer characteristics of data converters are presented.
Abstract: Due to the rugged energy function of the original Hopfield networks, the output is usually one local minimum in the energy function. An analysis on the locations of local minima in Hopfield networks is presented, and a modified network architecture to eliminate such local minima is described. In particular, another amplifier is introduced at the processor nodes to give correction terms. This modified Hopfield network has been successfully applied to the construction of analog-to-digital converters with optimal solutions. Experimental results on the voltage transfer characteristics of data converters are presented. >

66 citations


Patent
Ji-hong Ahn1
29 Oct 1991
TL;DR: In this paper, a method for manufacturing a capacitor of a highly integrated semiconductor memory device including a plurality of memory cells, each of which has a transistor and a capacitor, is presented.
Abstract: A method for manufacturing a capacitor of a highly integrated semiconductor memory device including a plurality of memory cells, each of which has a transistor and a capacitor. The method comprises the steps of forming an insulating layer for insulating the transistor, forming a contact hole to electrically connect to a source region by etching the insulating layer, sequentially forming a first polycrystalline silicon layer, an oxide layer, and a second polycrystalline silicon layer consisting of grains, exposing the second polycrystalline silicon layer to an oxide etchant, partially etching the oxide layer by the oxide etchant penetrating along the peripheries of the grains, anistropically etching the whole second polycrystalline silicon layer and, at the same time, the partial first polycrystalline silicon layer also, using the oxide layer being unaffected by the oxide etchant, as a mask, removing the oxide layer, forming a storage electrode by defining into cell units the first polycrystalline silicon layer, sequentially forming a dielectric film and a plate electrode formed of a third polycrystalline silicon layer over the resultant structure. Thus, the physical properties of the material itself is used without any specific conditions and unrestricted by limitation of minimum feature size. Furthermore, the process is greatly simplified and the effective capacitance of the cell capacitor is easily extended.

65 citations


Journal ArticleDOI
TL;DR: In this article, the gate field dependencies of the low-field mobilities of electrons and holes were studied and it was shown that by changing surface orientations and oxidation conditions the two-dimensional electron gas formulation can successfully explain eta = 1/3 (where eta is the weighting factor of mobile charge density used in calculating the effective field for the universal mobility curve).
Abstract: Experimental and theoretical studies of the gate field dependencies of the low-field mobilities of electrons and holes show that by changing surface orientations and oxidation conditions the two-dimensional electron gas formulation can successfully explain eta =1/3 (where eta is the weighting factor of mobile charge density used in calculating the effective field for the universal mobility curve) for

60 citations


Patent
Sang H. Lee1
15 Nov 1991
TL;DR: In this paper, a power miter box includes a power driven blade which is lowered onto a workpiece, and a separate safety switch operates to prevent the blade from being driven until it has been lowered onto the workpiece.
Abstract: A power miter box includes a power driven blade which is lowered onto a workpiece. A main switch must be actuated manually by an operator to drive the blade. A separate safety switch operates to prevent the blade from being driven until it has been lowered onto the workpiece. The safety switch is operated by relative movement occurring between two guard members which encompass the blade.

Patent
30 May 1991
TL;DR: In this article, a fast parallel 2-D discrete casing transform (DCT) device was proposed to reduce the number of multiplications during the implementation of the 2D DCT.
Abstract: A fast parallel 2-D discrete casing transform, DCT, device capable of performing a fast 2-D DCT by significantly reducing the number of multiplications during the implementation of the 2-D DCT. N×N 2-D input data is re-arranged into N groups so as to be the same as the kernel of a cosine function in order to transform a multiplying form of the cosine function (as the kernel of a 2-D DCT) into a summation form. Then, the first summations and first subtractions are carried out on the re-arranged data, thereby generating first computed data. Then, N 1-D DCT's are carried out on the first computed data. Finally, the 2-D DCT data is generated by carrying out a shifting process after performing additions and subtractions on the 1-D DCT data in log2 N stages.

Patent
Choi Kyu-Hyun1
16 Jul 1991
TL;DR: A programmable interconnect device with an intrinsic polycrystalline antifuse dielectric layer as discussed by the authors is suitable for field programmable interfaces, such as FPGAs.
Abstract: A programmable interconnect device particularly suitable for field programmable ROM, field programmable gate array and field programmable microprocessor code, includes an intrinsic polycrystalline antifuse dielectric layer.

Patent
27 Nov 1991
TL;DR: In this article, a fabrication method of a semiconductor device is disclosed, in which gate oxide film is formed by wet-oxidizing the annealed semiconductor substrate at a low temperature in a mixed gas atmosphere of oxygen (O2) and hydrogen (H2).
Abstract: A fabrication method of a semiconductor device is disclosed Particularly, in the process of forming a gate oxide film on a semiconductor substrate, the method for forming a gate oxide film of a semiconductor device comprises the steps of first-annealing the semiconductor substrate in a nitrogen (N2) atmosphere; forming a gate oxide film by wet-oxidizing the annealed semiconductor substrate at a low temperature in a mixed gas atmosphere of oxygen (O2) and hydrogen (H2); and second-annealing the semiconductor substrate where gate oxide film has been formed, at a high temperature in a nitrogen (N2) atmosphere Accordingly, the thinning phenomenon of the gate oxide film near the field oxide film is prevented and the instability such VFB in the conventional field oxidation method is considerably recovered Also, the field concentration phenomenon is decreased and tolerance to dielectric breakdown is increased

Patent
Ji-hong Ahn1
30 Dec 1991
TL;DR: In this paper, a dielectric film is applied on the whole surface of the storage electrode to obtain a large cell capacitance suitable for DRAM cells of highly integrated circuits, which can be achieved by using a large number of irregularly shaped quasi-cylindrical holes formed therein at random locations.
Abstract: In a highly integrated semiconductor memory device provided with memory cells in matrix form on a semiconductor substrate, each memory cell includes a transistor and a capacitor. The cell capacitor includes a storage electrode in contact with a source region of the transistor. This storage electrode has a plurality of irregularly shaped quasi-cylindrical holes formed therein at random locations. A dielectric film is coated on the whole surface of the storage electrode. Thus, storage electrodes having a large cell capacitance suitable for DRAM cells of highly integrated circuits can be achieved.

Patent
Hong Chung-Shik1
24 Dec 1991
TL;DR: In this article, a contactless charging system of a radio telephone comprising a portable device and a base unit, for charging a battery of the portable device, without electrical contact, was presented.
Abstract: A contactless charging system of a radio telephone comprising a portable device and a base unit, for charging a battery of the portable device, without electrical contact, by induction voltage of an electromagnetic field formed by the inductive coupling of a digital power receiver of the portable device and a digital power transmitter of the base unit, when the portable device is placed in the base unit.

Journal ArticleDOI
01 Aug 1991
TL;DR: A novel approach to digital image stabilization (DIS) for video cameras is proposed that is designed mainly for hardware minimization without using additional Micoms in a video camera system.
Abstract: A novel approach to digital image stabilization (DIS) for video cameras is proposed. The proposed DIS system is composed of an edge detection unit, a motion detection unit, and a digital zooming unit. The edge detection unit is based on tristate adaptive linear neurons, the motion detection unit is based on the corresponding binary logical correlation computations instead of multiple-bit pixel-wise subtractions, and the digital zooming unit is based on the approximated bilinear interpolation technique. A motion decision procedure is also proposed for removing unwanted effects on the integrated motion vector. The proposed DIS system is designed mainly for hardware minimization without using additional Micoms in a video camera system. Experimental results show that the proposed system accurately detects and compensates for camera motion. >

Patent
Choi Seung Lyul1
21 Oct 1991
TL;DR: In this article, a display apparatus informing of a programmed recording comprises a message generator for providing the programmed recording information a few seconds immediately prior to correspondence between a programmed before the present recording time and the current time in response to the inputting display interruption signal, an input selecting switch for selecting tuner signals and VCR regenerating signals, a picture-in-picture part for generating the main and sub-screens, and a Y/C processing part for processing the output signals of the PIP part outputting them to an output jack and a TV RF converter, respectively.
Abstract: A display apparatus informing of a programmed recording comprises a message generator for providing the programmed recording information a is displayed few seconds immediately prior to correspondence between a programmed before the present recording time and the current time in response to the inputting display interruption signal, an input selecting switch for selecting tuner signals and VCR regenerating signals, a picture-in-picture part for generating the main and sub-screens, and a Y/C processing part for processing the output signals of the PIP part outputting them to an output jack and a TV RF converter, respectively, wherein the interruption in watching TV is eliminated, and the troublesome key manipulations are eliminated.

Patent
Young-Man Lee1
24 Dec 1991
TL;DR: In this article, a reproduction device is used to selectively control a picture assignment address in a memory card for mixing and displaying a multiple of one or more pictures, creating new video images.
Abstract: A picture editing apparatus of a digital still video camera system includes a digital still video camera and a reproduction device which selectively controls a picture assignment address in a memory card for mixing and displaying a multiple of one or more pictures. An address generator that mixes 2 or more pictures in the same ratio generates an address to enable display of the mixed pictures and to read-out data (digital video signal) representing pictures recorded in the memory card. Therefore, it is capable of mixing pictures corresponding to the picture number recorded in a memory card as a single frame picture and displaying the mixed picture, creating new video images.

Patent
Lee Sangin1
03 Jan 1991
TL;DR: In this paper, a dielectric medium for the capacitor of a semiconductor device is disclosed, which is prepared by replacing Sr and Ba in (Sr, Ba)Nb2O6 with La, and the replacement is carried out by adding 2 mole % or more of La2 O3 to (Srx Ba 1-x)1-(3/2)y Lay Nb2 O6 (0.25≦x≦0.04≦y).
Abstract: A dielectric medium for the capacitor of a semiconductor device is disclosed. The dielectric material is prepared by replacing Sr and Ba in (Sr, Ba)Nb2 O6 with La, and the replacement is carried out by adding 2 mole % or more of La2 O3 to (Sr,Ba)Nb2 O6, thereby forming a composition (Srx Ba1-x)1-(3/2)y Lay Nb2 O6 (0.25≦x≦0.5, 0.04≦y). According to the present invention, the dielectric medium has the characteristics that the crystal structure is not affected even over the Curie temperature, and that a high dielectric constant and a low dielectric loss coefficient are maintained.

Patent
Intae Lee1, Myung-Hwan Kim1
02 May 1991
TL;DR: In this paper, a switched-mode power supply including a primary rectifying circuit connected to an AC power supply, a transformer connected to the primary rectifier, a secondary rectifier connected to a secondary side of the transformer, a voltage fluctuation detector for sensing fluctuation in the output voltage, a signal generator for generating switching signals in response to the fluctuation detectors, a switching tansistor for shunting the transformer to ground in reaction to the switching signals, a protective circuit responsive to output voltage for stopping any abnormal operation of the switching signal generator, and an auxiliary power
Abstract: A switched-mode power supply including a primary rectifying circuit connected to an AC power supply, a transformer connected to the primary rectifying circuit, a secondary rectifying circuit connected to the secondary side of the transformer, a voltage fluctuation detector for sensing fluctuation in the output voltage, a signal generator for generating switching signals in response to the fluctuation detector, a switching tansistor for shunting the transformer to ground in response to the switching signals, a protective circuit responsive to the output voltage for stopping any abnormal operation of the switching signal generator, and an auxiliary power circuit for supplying power to the switching signal generator and to the protective circuit. The power supply further comprises an AC power cut-off detecting circuit for detecting whether the AC power is interrupted and a discharge circuit for discharging any residual electric charge of the auxiliary power circuit according to the output of the detecting circuit.

Patent
Yun-ho Choi1
30 Sep 1991
TL;DR: In this paper, a constant voltage generator of a semiconductor device includes an oscillator for generating an AC signal, a charge pump for pumping charge from a power voltage supply line by a predetermined pumping ratio in accordance with the AC signal of the oscillator, and a charge storage capacitor for storing the pumped charge.
Abstract: A constant voltage generator of a semiconductor device includes an oscillator for generating an AC signal, a charge pump for pumping charge from a power voltage supply line by a predetermined pumping ratio in accordance with the AC signal of the oscillator, a charge storage capacitor for storing the pumped charge, and a voltage limiter for limiting the voltage across the charge storage capacitor at a predetermined voltage level, then outputting a constant voltage. According to the present invention, the charge of the storage capacitor is quickly stored, a constant voltage is obtained independent of a power source voltage, and the reference voltage output can be greater than the power source voltage.

Patent
Tae-Je Jin1, Joon-Young Jeon1
02 Jul 1991
TL;DR: In this article, an internal supply voltage generator receiving an external supply voltage, generates a stable, constant internal voltage to be applied to a semiconductor memory device regardless of the variation of the temperature.
Abstract: An internal supply voltage generator receiving an external supply voltage, generates a stable, constant internal supply voltage to be applied to a semiconductor memory device regardless of the variation of the temperature. For this end, the generator includes a voltage sharing circuit (80) which has a first variable resistor (R1 ') with higher resistance as a load element and a second variable resistor (R2 ') with lower resistance as a driving element. As the temperature increases, the resistance of the first variable resistor (R1 ') increases, thereby decreasing the current flow formed therethrough. Then, the comparator (60) connected to the output of the voltage sharing circuit (80) allows the output circuit (70) to increase the internal supply voltage, in response to increase of the temperature.

Patent
Jong-Jin Jang1
14 Aug 1991
TL;DR: In this article, a paging receiver for automatically dialing a stored telephone number can consider an area code, and the area code and the telephone number are converted into a DTMF signal when a dial key is depressed, and then applied to an electronic exchange through a telephone, thereby performing automatic dialing.
Abstract: A paging receiver for automatically dialing a stored telephone number can consider an area code. A received telephone number stored into a memory corresponding to a number of depressions of a read key is displayed when the read key is depressed, and an area code stored into the memory corresponding to the number of depressions of an area key is displayed when the area key is depressed. Then, when the area code and the telephone number are displayed, an unnecessary extension number, etc., is erased by using an editing key. Thereafter, the area code and the telephone number are converted into a DTMF signal when a dial key is depressed and the DTMF signal is applied to an electronic exchange through a telephone, thereby performing automatic dialing.

Patent
Jang-Rae Kim1, Han-Su Kim1
18 Jul 1991
TL;DR: In this article, a multilevel interconnection process for forming a via hole on the first layer electrode and then forming the second layer electrode, comprises the steps of forming the first dielectric layer on the whole surface of the semiconductor substrate where the via hole has been formed, leaving the spacer on the side wall of the viahole by anisotropically etching the insulating layer, depositing the conductive material on the inside of the throughhole whose side wall is enclosed by the polysilicon spacer, and patterning the material as a desirable conduct
Abstract: Disclosed is a method for manufacturing a semiconductor device. A multilevel interconnection process for forming a via hole on the first layer electrode and then forming the second layer electrode, comprises the steps of forming the first dielectric layer on the whole surface of the semiconductor substrate where the first layer electrode has been formed, filling the re-entrant by forming the insulating material on the first dielectric layer, laminating a second dielectric layer on the first dielectric layer and the insulating material, forming a via hole by carrying out the photolithography process on the second dielectric layer formed on the first layer electrode, forming an insulating layer on the whole surface of the semiconductor substrate where the via hole has been formed, leaving the spacer on the side wall of the via hole by anisotropically etching the insulating layer, depositing the conductive material on the inside of the via hole whose side wall is enclosed by the spacer and on the whole surface of the second dielectric layer, and patterning the conductive material as a desirable conductive layer shape. Thus, the several problems due to overetching and underetching of the conventional SOG layer can be solved and the slope of the via hole is smaller, thereby improving the step coverage of the conductive material filling the via hole.

Patent
Ji-hong Ahn1
14 Jun 1991
TL;DR: In this article, a high-density semiconductor memory device and its manufacturing method are disclosed, which has a plurality of memory cells, each consisting of one transistor and one capacitor on a substrate in a matrix form.
Abstract: A high-density semiconductor memory device and its manufacturing method are disclosed. The device has a plurality of memory cells, each consisting of one transistor and one capacitor on a substrate in a matrix form. The capacitor, in contact with the source region of the transistor, consists of a storage electrode having a hollow cylindrical electrode with a wall of predetermined thickness, and a column electrode surrounded by the cylindrical electrode. The capacitor further comprises a plurality of bars, a base plate electrode connecting the cylindrical and column electrodes to each other, a dielectric layer coating the whole surface of the storage electrode, and a plate electrode formed on top of the dielectric layer. According to this invention, a greater capacitance may be obtained while avoiding current leakage and the disparity of cell capacitance problems involved with a conventional stack-type capacitor having a ringed structure.

Patent
Gu S. Kim1, Young S. Kim1
29 May 1991
TL;DR: In this paper, a semiconductor package which is loaded with a plurality of high-performance integrated circuits for high performance systems such as super computers and large-sized computers is described.
Abstract: The present invention relates to a semiconductor package which is loaded with a plurality of high-performance integrated circuits for high-performance systems such as super computers and large-sized computers. According to the invention, the packaging density of the semiconductor is doubled by stacking upper and lower members and forming substrates loaded with a plurality of chips in a multistep structure so that the size of computers can be minimized and heat emission efficiency can be improved by forming heat sinks in a fin-pin shape.

PatentDOI
Sannraku Yun1
TL;DR: An apparatus for discriminating a received audio signal as vocal sound or musical sound includes a pre-processing circuit 100 for separating the audio signal into a vocal frequency band signal and a musical band signal.
Abstract: An apparatus for discriminating a received audio signal as vocal sound or musical sound includes a pre-processing circuit 100 for separating the audio signal into a vocal frequency band signal and a musical frequency band signal, an intermediate decision circuit having a plurality of decision units for producing a plurality of vocal and musical decision signals, each decision unit distinguishing whether vocal or musical frequency band signal includes properties of voice or music, and a final decision circuit 600 for systematically analyzing the vocal and musical decision signals to produce a final decision signal for discriminating the audio signal as the vocal or musical sound.

Patent
Kwang H. Yoon1
08 Oct 1991
TL;DR: In this paper, the temperature of fermentation and ensilage compartment is detected by the temperature sensor and the heating apparatus and the dampers are controlled according to the detected temperature, and a heating apparatus, a delivery duct, a return duct, dampers opening and closing the ducts and temperature sensor are mounted in the fermentation and enamel compartment.
Abstract: The refrigerator having a fermentation function includes a fermentation and ensilage compartment independent from a freezing compartment and a refrigerating compartment. A heating apparatus, a delivery duct, a return duct, dampers opening and closing the ducts, and temperature sensor are mounted in the fermentation and ensilage compartment. The temperature of fermentation and ensilage compartment is detected by the temperature sensor and the heating apparatus and the dampers are controlled according to the detected temperature.

Patent
Kyoung-Seo Min1
29 Mar 1991
TL;DR: In this article, a method of searching at high speed an information recorded on a compact disk in an optical recording/reproducing apparatus, by means of detecting the numbers of current tracks and tracks of the target position and converting the detected value of the tracks to a value of time corresponding to velocity, is disclosed.
Abstract: There is disclosed a method of searching at high speed an information recorded on a compact disk in an optical recording/reproducing apparatus, by means of detecting the numbers of current tracks and tracks of the target position and converting the detected value of the tracks to a value of time corresponding to velocity. In the compact disk system, the number of track required to be move the target position is obtained by detecting the numbers of the current and target tracks. The number of tracks obtained is converted as the value of time, and the sled motor in pick-up tools is driven according to the obtained value of time, and then the break point is settled at the point of 3/4 of the time driven in the sled motor, and finally the target track is detected at high speed after passing over the point of 1/4.