Abstract: A CDMA mobile communication system is capable reduce power consumption. A CDMA mobile communication device realizes a CDMA communication by combining outputs of finger circuits performing despreading for reception signals. The CDMA mobile communication device includes subtracted performing subtraction between delay profile data respectively output from at least two correlators respectively corresponding to reception signals transmitted from mutually different antennas, and assigning unit assigning the finger circuits for despreading reception signals to result of subtraction having signal level higher than and lower than a reference level so that outputs of the assigned finger circuits are combined.

Abstract: An AFC process is performed even when a mobile station is in a speech communication mode in which a data channel is being received by a finger receiver. In the speech communication mode, a frequency error measuring unit measures a frequency error of the data channel. An AFC circuit performs an AFC process for controlling the frequency of a TCXO, i.e., a reference oscillator, using the measured frequency error. No reception failure occurs even when the TCXO suffers frequency fluctuations in the speech communication mode.

Abstract: A finger allocating section 5 allocates path timings corresponding to peak positions of a plurality of radio waves detected by a delay profile section 4 to separate finger sections 6, respectively, and further decides a path tracking range in each of the finger sections 6 on the basis of respective distances of peak positions in the plurality of radio waves. For instance, when distances of peak positions in a plurality of radio waves being arrived from a base station 20 are narrow from one another, the finger allocating section narrows a path tracking range in each of the finger sections 6. In each of the finger sections 6, a path tracking range is variable.

Abstract: A common pilot channel-use reverse diffusion unit generates common pilot data using a received digital signal and a common pilot channel-use reverse diffusion code, while an individual channel-use reverse diffusion unit generates individual channel data using the received digital signal and an individual channel-use reverse diffusion code. Power calculating unit converts respective output data items of the common pilot channel-use reverse diffusion unit and the individual channel-use reverse diffusion unit into power values, a larger one of which is then determined by a comparator. A selector unit selects the data item having thus determined larger power value of those output data items of those reverse diffusion units. A channel estimating unit estimates the channel using data symbols of the data item thus selected by the selector unit.

Abstract: An AFC control apparatus in mobile communication equipment includes a depreading unit, first integrator, and control section. A despreading section despreads the reception signal. The first integrator integrates despread outputs obtained by despreading, of pilot symbols contained in a pilot channel of the reception signal, N (N is a number of 2 or more) consecutive first symbols and N second symbols succeeding the N first symbols, and generates first and second integral outputs. The control section detects any phase shift amount between the first and second integral outputs and controls the frequency of the local signal in accordance with the detected phase shift amount. An AFC control method and mobile communication equipment having the above apparatus and method are also disclosed.

Abstract: A gas turbine generator includes a first gas turbine 20 having an air compressor 21, first turbine 24a and a first combustor 25a; a second gas turbine 22 having a second turbine 24b and a second combustor 25b; a generator 27 driven by the first gas turbine and the second gas turbine; and a coupling 23 arranged between the generator and the second gas turbine for connection and disconnection. When residual steam is sufficiently supplied, the residual steam is fed to the first combustor and the second combustor while connecting the coupling, and when the residual steam is not sufficiently supplied, the residual steam is fed to only the first combustor while disconnecting the coupling.

Abstract: A radio base station inter-station synchronizing circuit is disclosed that is provided in a radio base station device of a TDMA digital mobile communication system and that synchronizes the frame timing generated by each radio base station. The synchronizing circuit includes: data reception/comparison circuit 4 that outputs data match signal S9 when synchronizing signal data transmitted from a synchronized timing control station provided in a mobile communication system match with the same synchronizing signal data held by that radio base station; delay time correction counter 5 that, upon receiving the data match signal S9, subtracts from the timing of the received synchronizing signal data line delay time from the synchronized timing control station to that radio base station; timing holding circuit 8 that holds the corrected synchronized timing; and frame timing generation circuit 9 that generates and outputs frame timing from the output pulse of the timing holding circuit 8.

Abstract: A frequency multiplier circuit that needs no coupling capacitors and no input bias circuits for a next-stage circuit, which includes a phase-shifted signal generator, first and second differential amplifiers, and a multiplier. The phase-shifted signal generator receives an initial input signal and generates first and second output signals whose phases are shifted by 90.degree. with each other. The first differential amplifier amplifies the first output signal to output a first positive-phase output signal and a first negative-phase output signal. The second differential amplifier amplifies the second output signal to output a second positive-phase output signal and a second negative-phase output signal. The multiplier multiplies the first and second positive-phase output signals to output a third positive-phase output signal as a positive-phase output of the frequency multiplier circuit.

Abstract: An overcurrent detecting circuit provided within a battery pack detects any overcurrent flowing in a circuit electrically connecting the battery and connection terminals. Upon detection of any overcurrent by this overcurrent detecting circuit, a switch circuit intercepts the electric connection between the battery and the terminals, and opens the so far closed circuit.

Abstract: In a portable telephone set, an earphone cord is a flat cord. Therefore, it is difficult for the flat cord to be twisted, so that the tangling of the flat cord is avoided. The motion of the flat cord in which the flat cord is pulled out of a main body in operation and contained therein in non-operation is conveyed to an antenna, so that the antenna is extended out of the main body in operation, and the antenna is contained in the main body in non-operation. In the same manner, the motion of the antenna is conveyed to the flat cord.