摘要:
A bidirectional transmission circuit for inputting/outputting a signal from/onto a bidirectional transmission line includes: a transceiver for transmitting/receiving a signal; a first element having an impedance; a second element being a short line; and a switching unit for coupling the transceiver to the bidirectional transmission line via the first element when the transceiver transmits a signal, and coupling the transceiver to the bidirectional transmission line via the second element when the transceiver receives a signal.
摘要:
An apparatus of the present invention is a magnetic recording/reproduction apparatus for pulling out a magnetic tape from a cassette, forming a predetermined tape drive system with a group of tape guide posts while winding the magnetic tape around a rotary head cylinder, having a rotary head, for a predetermined arc, so as to perform recording/reproduction of the magnetic tape. The apparatus includes: an inclined post around which a non-magnetic side of the magnetic tape from the rotary head cylinder is wound; a rail provided integrally with a base on which the rotary head cylinder is mounted; and a tape guide post carrier which has the inclined post mounted thereon and is guided along the rail. The inclined post is a tape guide post around which the winding contact line, along which the magnetic tape contacts the tape guide post, is not perpendicular to a tape drive direction. The inclined post has a tapered tip portion whose diameter upwardly decreases, wherein an upper edge of the magnetic tape is between a base of the tapered tip portion and a tip of the tapered tip portion.
摘要:
A loading mechanism of a video tape recorder is provided which reduces the thickness of the mechanism for guiding a loading boat along a loading guide. Also, a loading post driving device for a magnetic recording/playback apparatus is provided which can prevent the rotary head cylinder from being damaged or interfered with in its rotation. Furthermore, a loading post holding device which can considerably reduce the height of the device is provided. Additionally, an arrangement of a loading ring guide is provided for a loading post driving device to reduce the number of parts used and improve the assembling efficiency of the device.
摘要:
A loading mechanism of a video tape recorder is provided which reduces the thickness of the mechanism for guiding a loading boat along a loading guide. Also, a loading post driving device for a magnetic recording/playback apparatus is provided which can prevent the rotary head cylinder from being damaged or interfered with in its rotation. Furthermore, a loading post holding device which can considerably reduce the height of the device is provided. Additionally, an arrangement of a loading ring guide is provided for a loading post driving device to reduce the number of parts used and improve the assembling efficiency of the device.
摘要:
Provided are a printed wiring board and a flexible printed wiring board which hardly generate radiation electromagnetic noises and are not easily affected by external noises. First and second wave-shape wirings are provided between at least two insulation substrates stacked on each other. The first and the second wave-shape wirings three-dimensionally intersect with each other in a plane direction and a thickness direction of the insulating substrates. The first and second wave-shape wirings are electrically separated from each other by a resist layer provided between the insulating substrates.
摘要:
It is an object of the invention to inhibit a drop in the data transmission efficiency due to the transmission of an interrupt signal. The invention provides a signal transmission method that is characterized in that a reception side and a transmission side partition data into a plurality of data fragments and send and receive the plurality of data fragments over at least two transmission lines, in that the transmission side transmits first data fragments of the plurality of data fragments over a first transmission line of the transmission lines, transmits data packets that include header information, a second data fragment that has the same bit length as the first data fragments, and footer information over a second transmission line other than the first transmission line, and transmits the first data fragments and the second data fragments in synchronization, and in that an interrupt signal for controlling the transmission side is transmitted from the reception side to the transmission side in a time slot that is an interval between first data fragments that are adjacent on the first transmission line.
摘要:
According to the present invention, the setting height position of a first terminal is set to be lower than the setting height position of a second terminal on the terminal formation surface of a printed substrate, so that the protection of an internal circuit and the transmission of a high-speed signal can be both achieved.
摘要:
A card controller receives data from a recording card via a socket. A read clock is transmitted in a main transmission wiring, and the data is transmitted in a data transmission wiring. The read clock is withdrawn from the card controller by an outgoing transmission wiring and retrieved into the card controller by an incoming transmission wiring. A transmission delay amount of the outgoing transmission wiring is equal to that of the main transmission wiring, and a transmission delay amount of the incoming transmission wiring is equal to that of the data transmission wiring. The card controller receives the data in synchronization with the read clock retrieved by the incoming transmission wiring.
摘要:
A main object of the present invention is to reliably perform radio communication in an electronic device containing case without spoiling an aesthetic aspect thereof. In order to achieve the object, an electromagnetic shield body is provided on a wall surface of the case for containing an electronic device capable of the radio communication.
摘要:
An authentication communication system includes an storage medium having an area for storing digital information and an access device for reading/writing digital information from/into the area. The access device authenticates whether the storage medium is authorized according to a challenge-response authentication protocol in which scrambled access information generated by scrambling the access information which shows the area is used. The storage medium authenticates whether the access device is authorized. When the access device and the storage medium have authenticated each other as authorized devices, the access device reads/writes digital information from/into the area in the storage medium according to the access information separated from the scrambled access information by the access device.