Abstract: A digital ?? modulated signal produced by a quantizer (1c) in a ?? modulation processing unit (1) is put in to a feedback loop before inputted to a power switch (2) and converted into an analog signal by a D/A converter (1d). This analog signal is fed back to the input stage (a differentiator (1a)) of the ?? processing unit (1) to prevent the switching distortion of the power switch (2) itself from being introduced into the feedback loop thereby to suppress the influence of the switching distortion.

Abstract: An integrated circuit includes CMOS circuit blocks and analog control lines arranged outside a layout of the CMOS circuit blocks so that the analog wiring and circuit blocks do not overlap each other. The distance of signal lines within a circuit block and the analog control lines can become as long as necessary, and the signal line within the circuit block and the analog control lines are not coupled via parasitic capacitance, and mutual interference is suppressed. In another aspect, a method of arranging a semiconductor integrated circuit includes providing a plurality of functional circuit blocks and connecting analog control wiring to the functional circuit blocks. The analog control wiring is arranged outside a layout of the functional circuit blocks on the semiconductor integrated circuit so that the analog control wiring does not overlap any one of the functional circuit blocks so as to reduce or eliminate interference between signal lines within a circuit block and the analog control lines.

Abstract: In order for circuit blocks 1 to 3 composed by the CMOS process, and analog lines 5-1, 5-2, and 5-3 connected thereto not to overlap on the layout, the analog lines 5-1 and 5-2 are wired so that such lines roundabout the layout of the AM/FM common circuit block 3. Through this, the distance of the signal line within the AM/FM common circuit block 3 and the analog lines 5-1 and 5-2 can become as long as possible, the signal line within the AM/FM common circuit block 3 and the analog lines 5-1 and 5-2 would not be coupled via parasitic capacity, and mutual interference occurring between the signal line and the analog lines 5-1 and 5-2 can be suppressed.

Abstract: A keyboard section 9, whose operation keys are allocated linearly in a longitudinal direction on the cylinder chassis 1, is established except for at the location of the grip section 1a, which is held by the user when the cylinder chassis 1 is used as a writing tool. Due to this, the area of the operation keys of the keyboard section 9 can be large. And for the operation keys to be allocated linearly can preserve a great deal of space for the display section 3.

Abstract: It is object to provide a memory system for reliably detecting an error, if any, in management information that is read out. The same content of telephone number data is stored in memories 8, 9, 10. When telephone number data is read out of the memories 8, 9, 10, a comparing section 20 judges if all the contents of the telephone number data are the same. If not, a parity error detecting section 22 performs parity check of the telephone number data and excludes the content from which a parity error is detected as an object not to be processed thereafter. After the parity check, an object-to-be-processed determining section 24 determines whether or not there is any telephone number data in the majority on the basis of the criterion that the sum of the pieces of the telephone number data that is read out. If there is not such telephone number data, it judges that there is an error.

Abstract: An FET band amplifier for providing a high gain. An FET band amplifier 5 included in an AM receiver comprises amplifiers 11 to 15 e.g. at five stages and a BPF 16 inserted halfway in their connection. Each of the amplifiers 11 to 15 acts as a differential amplifier comprising a p-channel FET as an amplification element. The BPF 16 allows the passage of a component of a band wider than the amplification band of the whole of the FET band amplifier and reduces a 1/f noise by removing the low-band component of a signal amplified by the amplifiers 11 to 13 at three stages and thermal noise by removing the high-band component. Thus, each of the amplifiers 14, 15 connected to the rear stage of the BPF 16 is not saturated by a noise component.

Abstract: An FET band amplifier for reducing a residual noise during gain control. An FET band amplifier 5 included in an AM receiver comprises amplifiers 11 to 15 e.g. at five stages, a BPF 16 inserted halfway in their connection, and an AGC circuit 8. The BPF 16 allows the passage of a component of a band wider than the amplification band of the whole of the FET band amplifier and reduces a 1/f noise by removing a low-band component of a signal output from the amplifier 13 at the third stage and thermal noise by removing the high-band component. This process enables a reduction in a residual noise during gain control included in a signal output from the amplifier 15 at the final stage.

Abstract: An inductor element having good characteristics is formed on a substrate. An inductor element 100 includes two spiral conductors 120, 122 formed on the surface of a semiconductor substrate 110. The upper conductor 120 and the lower conductor 122 have substantially the same shape, and the conductor 120 is used as an inductor conductor, while the conductor 122 is used as a floating conductor. The outer and inner ends of the conductor 120 are connected with lead wires 130, 132, respectively, and the lead wire 132 connected with the inner ene extends outside between the lower conductor 122 and the semiconductor substrate 110.

Abstract: An amplifier circuit for AM broadcasting for amplifying an inputted AM broadcast signal by an FET and outputting it. The amplifier circuit comprises FETs for signal amplification which are P-channel MOSFETs (4, 5) of relatively small flicker noise. While suppressing the flicker noise to a lowest possible level, more circuits including the RF amplifier for AM broadcasting can be integrated on one chip, thereby realizing small size and low noise of the circuits.

Abstract: An image processing circuit capable of carrying out high-speed processing and improving the horizontal and vertical resolutions even with its simple structure. The pixel values a to i of a total of nine pixels, three pixels in the horizontal direction along a scanning line by three pixels in the vertical direction in which the line and adjacent lines are abreast, are extracted by a pixel value extracting section. The pixel values A1 to A4 of four pixels Q1 to Q4 generated additionally around the center pixel P5 are determined by calculation by a pixel value calculation section. These pixel values are outputted in units of one scanning line by correlating them with two scanning lines by a pixel value output section.

Abstract: The present invention prevents sound quality from degrading due to a change in electric field intensity or due to multi-path noise. An arithmetic unit subtracts a signal based on the detection signal of multi-path noise whose time constant is specified by a second time constant circuit from a signal based on an RSSI signal whose time constant is specified by a first time constant. An output signal from this arithmetic unit is applied, as a control signal, to a stereo-noise control circuit or the like. This can control the degradation of separation and the like in accordance with multi-path fading to prevent sound quality from degrading.

Abstract: A receiver capable of reducing the number of pads of a semiconductor device used for connection with a tuning circuit. The receiver includes a semiconductor device 100 containing various circuits and a tuning circuit 130 connected as a separate part to this semiconductor device 100. The semiconductor device 100 has a pad 112 formed on a semiconductor substrate 110, a processing circuit 114 connected via a capacitor 120 to the pad 112, and a D/A converter 122 connected via a resistor 124 to the pad 112. A tuning voltage generated by the D/A converter 122 is applied via the pad 112 to the tuning circuit 130. Moreover, an output signal of the tuning circuit 130 is supplied to the pad 112 and fed via the capacitor 120 to the processing circuit 114.

Abstract: A current amount of a current that flows in the transistor (23) of a current mirror circuit that retrieves an L?R component signal from a stereo composite signal is adjusted based on a control signal that is generated by the control circuit (25).

Abstract: By photographing pad forming faces of CSPs 400 to recognize a pad arrangement through image processing so as to transfer and position the CSPs 400 in accordance with the recognition result of the pad arrangement, even if pads 401 are formed in any arrangement state in the CSPs 400 to be transferred, the positional relation between the pads 401 included in the CSPs 400 is made to always accurately coincide with the positional region between a plurality of solder ball attracting nozzles of a solder ball mounting apparatus.

Abstract: A tray of parts for inspection has a simple structure having only a tray holder that has a plurality of groove sections that store a plurality of parts for inspection on the surface, and contact sections, comprised in each groove, which have the conductor to electrically connect the electrodes of the stored parts for inspection in each groove section extends to the back surface. Under conditions where the plurality of parts for inspection are stored in the tray of parts for inspection, such tray is held by the tray holder, and the plurality of probe needles are placed on the plurality of contact sections equipped by the tray of parts for inspection all at once. Through this, electrical examination of a plurality of parts for inspection can be simultaneously performed.

Abstract: A device is provided with: a counter 11 for measuring a period of time from turning on an electronic apparatus 1 to receiving via a network 3 a first network event that occurs after turning on the electronic apparatus 1; and a value determining section 12 for determining a value of an initial random number on the basis of the time information obtained by the counter 11. In this device, an initial random number for random numbers is generated utilizing the fact that the first network event is received in a “random” period of time after turning on the electronic apparatus 1. In addition, since existing electronic apparatuses are generally provided with various devices including the counter 11 and a CPU with the value determining section 12, an initial random number for random numbers can be generated utilizing an existing hardware configuration.

Abstract: A semiconductor device and a method for manufacturing the semiconductor device mountable with high density, which includes a simplified process but is capable of reducing a defect rate. A plurality of identical memory chips are formed on a semiconductor wafer, and a go/no-go test is conducted on all the memory chips. The semiconductor wafer is cut and divided into pieces that each consists of one, or two, or four good memory chips, and they are mounted on a substrate to form a memory module.

Abstract: A transformer 11, which converts input current into voltage output, is arranged between a power switch 1, which amplifies and outputs audio signals based on the power source voltage VDD supplied to MOS transistors Q1 to Q4, and a speaker 3. Through appropriately determining the turns ratio (Ns/Np), without causing the power source voltage VDD of the power switch 1 to be large, large voltage Vs is made to occur at both ends of the speaker 3 from such small power source voltage VDD. Through this, large output power can be obtained.

Abstract: An FET band amplifier for reducing a residual noise during gain control. An FET band amplifier 5 included in an AM receiver comprises amplifiers 11 to 15 e.g. at five stages, a BPF 16 inserted halfway in their connection, and an AGC circuit 8. The BPF 16 allows the passage of a component of a band wider than the amplification band of the whole of the FET band amplifier and reduces a 1/f noise by removing a low-band component of a signal output from the amplifier 13 at the third stage and thermal noise by removing the high-band component. This process enables a reduction in a residual noise during gain control included in a signal output from the amplifier 15 at the final stage.

Abstract: A receiver (11) converts a received signal directly to a baseband signal, and includes: a switched-capacitor filter (19) controlling a cutoff frequency when the baseband signal is filtered according to a control signal provided for a switched-capacitor element (27); an oscillator generating a periodic signal; and a divider (31) dividing a periodic signal generated by the oscillator according to the received signal, and an output signal from the divider (31) is provided as the control signal for the switched-capacitor element (27).