Abstract: A vehicle glass antenna for receiving FM and AM radio waves, includes a first antenna line which vertically extends on a glass of the vehicle so as to receive the FM radio waves, and has a feeding point on the edge of the glass, and a second antenna line which is connected to the first antenna line at a position in the neighborhood of the feeding point so as to receive the radio waves in the AM band, and extends by a predetermined length in a loop pattern along the edge of the glass.

Abstract: A multiplex transmission method in which time-divisional multiplex transmission operations are performed among a plurality of communication nodes, and every time a node transmits a new signal, it changes the state of a re-transmission check bit added to the signal. When a signal is re-transmitted, each node sets the re-transmission check bit to be the same as that of the new signal to be re-transmitted. Each node can properly determine whether or not a reception signal is a new or re-transmission signal for the self node.

Abstract: In a multiplex transmission method, refresh transmission operations at a predetermined period, and event transmission operations are time-divisionally performed in a multiplex transmission mode, and a predetermined non-transmission time is set before start of each refresh transmission operation. When another transmission operation is performed within the non-transmission time, a communication is performed, while the predetermined period of the refresh transmission operations is properly permitted to be delayed to assure the non-transmission time for such a communication state.

Abstract: A method of multiplex transmission for effecting multiplex transmission among a plurality of multiplex nodes is disclosed.

Abstract: In a multiplex transmission method of a multiplex transmission apparatus provides time-divisional multiplex transmission operations among a plurality of communication nodes. A among the plurality of communication nodes predetermined node among the plurality of communication nodes is started requests other communication nodes to transmit connection signals so as to confirm a connection state of communication nodes on the multiplex transmission bus. When the predetermined communication node receives the connection signals from the other nodes within a predetermined period of time, confirmation of the connection state is ended and a multiplex transmission of data is started.

Abstract: An apparatus for reproducing a recorded digital signal suitable for use in a data recorder or the like, wherein error detecting signals (CRC) are generated for respective reproduced header portions of a main data area and a sub-data area formed in each track, the error detecting signals (CRC) are counted for a predetermined period, and the counted value is compared with a predetermined value. A data error condition is determined in accordance with the comparison result, so that it is possible to simplify the circuit arrangment and detect an error condition in the recorded digital data.

Abstract: Apparatus including a rotary head accurately reproduces a digital signal recorded on a tape, even when the tape runs at high speed. Transitions of a reproduced signal are detected, intervals corresponding to the transitions are counted on the basis of a predetermined reference signal, and the rotation of the rotary head is controlled in response to the counted value so that the relative speed between the rotary head and the tape is held constant, notwithstanding changes in the absolute speed of the tape, as in the fast-forward mode.

Abstract: An apparatus for reproducing digital signals recorded on a magnetic or other recording tape includes a servo mechanism which is effective, when the tape is transported at a high speed in either a fast-forward or rewind mode, to maintain a relative speed between the tape and a rotary head that is substantially the same as that in the normal playback mode. Moreover, in the rewind mode, the rotary head is rotated in the direction opposite to that in the normal playback mode, while the absolute value of the relative speed remains the same as that in the normal playback mode. Further, the digital signals reproduced by the rotary head in the rewind mode have their sequential order reversed.

Abstract: In a recording/reproducing apparatus, a program identifying number is recorded in a beginning portion of each of a sequence of programs recorded on a record medium during a first recording operation, and a program start signal is recorded in a beginning portion of each program recorded in a second recording operation and thereafter. Subsequently, in a renumbering operation, each of the recorded program identifying numbers and/or program start signals is detected, with high speed movement of the record medium therebetween, and the previously existing recorded program identifying numbers and/or program start signals are replaced by a properly ordered sequence of program identifying numbers on the record medium.

Abstract: Apparatus for reproducing digital signals recorded on a recording tape comprises a rotary drum about which a recording tape can be trained, a rotary head mounted in the drum, a transport mechanism for transporting the tape over the drum and rotating the head so that a relative speed is established between the head and the tape and the head scans the tape and generates reproduced digital signals in response to digital signals recorded on the tape, and a mode-control mechanism for controlling the transport mechanism so that the tape is transported over the drum at an absolute tape speed that can be varied. A servomechanism responsive to variations in the absolute tape speed adjusts the transport mechanism so that the head acquires a rotary speed such that the relative speed is restored to and maintained at a substantially constant value, not withstanding changes in the absolute tape speed effected under the control of the mode-control mechanism.