Abstract: There is disclosed a communication system using a bi-directional bus, which includes a plurality of devices (e.g., TV image receiver or video tape recorder, etc.) connected to each other. Each device includes a transmit signal formation unit having a frame structure including an address field for specifying addresses of devices between which communication is carried out, a control field for specifying whether communication is carried out in the state where device on the receiving side is locked or in the state where that device is unlocked, and a data field for specifying data to be transmitted. For transmitting data having a data quantity greater than data capacity of the data field, the data is divided into a plurality of frames, an indication to lock device on the receiving side is given to control field of a frame transmitted first, and an indication to unlock that device is given to control field of a frame transmitted last.

Abstract: An electrical connector having a planar gripping member which allows for improved manual gripping of the connector to facilitate easy connection/disconnection of the electrical connector from an interface point.

Abstract: In a database accessing system, access information concerning access to a database system is transferred using call control messages including user-to-user information within a control procedure defining the connection of a call on a signal channel. This results in a database accessing method that offers the improved use efficiencies of communication lines and the upgraded operating ratio of a database system, and allows users to enjoy reduced communication charges.

Abstract: A cellular communication system includes a mobile station with a switch or button which, when actuated by the user, calls a predetermined party. In the case of an emergency, the user actuates this switch and automatically places a call to an emergency agency. The switch also actuates a system for automatically locating the mobile station by measuring distances from the mobile station to a plurality of fixed stations in the cellular communication system.

Abstract: In a reproducing device, e.g., in the portable tape player, the sound leakage from earphones is effectively avoided by directly detecting the signal level of medium to high frequency sounds at the earphone, and suppressing the signal level depending on the detected result thereof, so that the deterioration in sound quality is prevented and the sound leakage is effectively reduced.

Abstract: An apparatus for recording and reproducing a signal on and from a record medium includes a reproducing system signal processing circuit (21) for reproducing a recorded information, an output circuit (25) for outputting a reproducing digital audio signal thus reproduced in the form of a predetermined format, an input circuit (29) for converting a signal input from the outside into a signal of a predetermined format and a recording system signal processing circuit (35) for recording at least an information. This apparatus includes switches (20), (23), (27) and (32) for selectively switching the recording and reproducing lines or input and output lines. Since the recording and reproducing lines or input and output lines are selectively switched, all portions that should be diagnosed can be diagnosed. Also, a circuit size can be reduced and a space factor can be improved. Hence, manufacturing cost can be reduced.

Abstract: A method for secure and prompt distribution of critical operational information to a wireless cellular or PCS subscriber station via wireless interface which includes the steps of generating operational information, storing the operational information into a first memory of a wireless base station, and transmitting at least a portion of the operational information stored in the first memory to a wireless subscriber station via a wireless interface at random times during an active conversation state of the wireless subscriber station. The operational information stored in a second memory register in the subscriber station is updated with the operational information transmitted from the first memory. Where at least a portion of new operational information is received by the subscriber station, a first update counter is incremented to reflect the number of operational information updates received by the subscriber station.

Abstract: A PSK signal demodulating apparatus having a clock extracting circuit. The clock extracting circuit includes a counter that is operable by a clock having a frequency N time the carrier frequency of a phase modulated signal such as a .pi./4 shift DQPSK modulated wave is latched at the leading edge timing of the above signal thereby to obtain phase data. Also, a difference between these phase data is calculated at mod.2.pi. thereby to extract a clock component.

Abstract: A thermo-sensitive transfer recording materials comprising a base sheet, an ink layer and a heat-resistant Lubricating layer. The heat-resistant lubricating layer is made of either a polymer compound obtained by reaction between a hydrocarbon compound having at least two hydroxyl groups in one molecule and/or a silicone compound having a hydroxyl group and an isocyanate compound having at least two isocyanate groups in one molecule, or a polymer compound obtained by reaction between a silicone compound having an amino group and an isocyanate compound having at least two isocyanate groups in one molecule.

Abstract: Remote control signals for a plurality of manufacturers and a plurality of electronic equipment are stored in a memory, the remote control signals are divided into groups, each of the groups is allotted to each of operating keys on a body of a remote controller and various remote control signals which may exist within the group are allocated to a number of times which the operating keys are pressed. The groups and any remote control signals existing within the group are stored in order of priority.

Abstract: An RDS receiver capable of extracting an AF list from the RDS data and selecting a broadcasting station of any of the frequencies on the AF list. The receiver is equipped with functions of selecting, during reception of a desired broadcast of one frequency, a station of the other frequency on the AF list by manipulation of a predetermined key; checking the reception state of the RDS data from the selected broadcasting station; checking the PI code to detect if the result of the preceding check is satisfactory or not; and picking up the broadcast from the selected station upon coincidence of the checked PI code with the PI code of the aforesaid one frequency.

Abstract: An electrostatic loudspeaker has electrodes 24 and 26 arranging multiple plate electrodes 24A to 24D, 26A to 26D insulated each other on both sides of movable electrodes 12, thereby being capable of efficiently producing a large sound pressure level.

Abstract: An IC card loading detecting apparatus utilizing an input/output terminal portion of an IC card which houses therein a central processing unit (CPU) has a ground contact (6e) and a detection sensor contact (7) provided on an interface portion (6) of a terminal equipment (4). The detection sensor contact is brought in contact with a ground terminal (2e) of an input/output terminal portion (2) of an IC card (1) after the ground contact is brought in contact with the ground terminal when the IC card is inserted into the equipment and is disconnected from the ground terminal before the ground contact is disconnected from the ground terminal when said IC card is ejected from the equipment.

Abstract: A speaker system comprising a speaker housing detachable from the body of the television receiver, the detachable speaker housing having first and second sides; a low frequency component speaker disposed in a lower portion of the first side of the detachable speaker housing; and, two high frequency component speakers, wherein a first of the two high frequency component speakers is disposed in an upper portion of the first side of the detachable speaker housing and a second of the two high frequency component speakers is disposed in a lower portion of the second side of the detachable speaker housing.

Abstract: A reel base braking mechanism for a reel base of a video tape recorder in which the number of assembly parts can be reduced and an accurate braking timing can be obtained by employing a so-called one-way mechanism using a plane cam. In a ganged relation with a slide operation of a slide plate on which a plane cam formed of first and second guide grooves is formed when a tape loading and tape unloading are carried out, a pin of a braking arm is selectively engaged with the first and second guide grooves to rotate the braking arm to control the timing at which said supply-reel base is operated with brakes-on and off.

Abstract: A double-deck video tape recorder has two tape cassette slots defined in a front panel thereof for inserting and ejecting respective magnetic tape cassettes therethrough. The double-deck video tape recorder also has a pair of drive mechanisms disposed in a housing for recording information on and reproducing information from the magnetic tape cassettes inserted in the respective drive mechanisms through the tape cassette slots. When an edit direction key is pressed, a control system places one of the drive mechanisms in a playback mode and another of the drive mechanisms in a recording mode. When a start/pause key is pressed, the control system starts to operate the one of the drive mechanisms to reproduce recorded information from the magnetic tape cassette inserted therein and also to operate the other drive mechanism to record the reproduced information in the magnetic tape cassette inserted therein.

Abstract: A multi-mode audio imaging control device having unitary control element for use in recording and reproducing of multi-channel audio programs. The imaging control device includes a first channel input and a second channel input, four variable resistors for variably controlling the signal input from the first channel input and the second channel input to the inputs of a first differential amplifier and a second differential amplifier. The four variable resisters are coupled together so as to be simultaneously varied in accordance with a common control mechanism.

Abstract: An 8-mm video tape recorder receives a main audio signal which is transmitted as a monaural or stereophonic audio signal, and an auxiliary audio signal (SAP) which is selectively transmitted with the main audio signal, and records the main audio signal as first and second audio signals. A SAP demodulator determines whether the auxiliary audio signal is transmitted or not. When the auxiliary audio signal is transmitted as determined by the SAP demodulator and recording of the auxiliary audio signal is indicated through a terminal by the user, selector switches are shifted to supply the auxiliary audio signal to a frequency demodulator which records the auxiliary audio signal as the first audio signal on an 8-mm magnetic video tape. The 8-mm video tape recorder can record video signals accompanied by audio signals at all times.

Abstract: A planar antennas has a square radiating conductor with a total of eight slits defined therein. Each of the slits extends from one side of the radiating conductor parallel to opposing sides flanking the one side. The slits are positioned such that they slits remain in the same pattern when the radiating conductor is turned 90.degree.. Any changes in the impedance as the offset length of a feeding point from the center of the planar antenna are relatively small, specifically range from 0 ohm to 400 ohm. The planar antenna is small in size, is easy to achieve impedance matching with a general feeding system having an impedance of 50 ohms, for example, and has wider frequency band. The planar antenna is also capable of generating circularly polarized electromagnetic waves.

Abstract: In an analog signal comparator circuit, first and second inversion output currents to the first and second reference values of input analog signals, a plurality of the first and second dividually inversion outputs divided the first and second non-inversion output currents, and the first and second dividually non inversion output currents are combined respectively and added, and the comparison output corresponding to the virtual reference value for dividing the first reference value, and the first reference value and the second reference value equally are outputted. Thus, the number of comparators can be decreased comparing with the necessary numbers of reference values, and by decreasing the number of elements the input capacities can be decreased and differential linearity errors can be reduced.