Sony Corporation

Independent Administrative Institution Japan Aerospace Exploration Agency

Non-destructive Inspection Company Limited.

Hiroshi Miyamoto

Shigeyuki Matsubara

Shizuo Adachi

Tatsuyuki Nagai

Junko Hirata

Norio Nemoto

Hideki Yabushita

Takashi Enomoto

Toshiharu Tajiri

Tsutomu Iwaoka

Kazunori Nakajima

Hidekazu Sato

Makoto Shirai

An ultrasonic wave propagating method capable of propagating plate waves between a probe and a test piece despite variations in the thickness or the surface angle of a test piece, and an ultrasonic propagating device and an ultrasonic testing device using this method. Ultrasonic waves are propagated between a probe () for transmitting or receiving ultrasonic waves and a test piece () for propagating plate waves. When propagating ultrasonic waves, a probe that can set an ultrasonic wave incident angle from the probe () to the test piece () and/or an ultrasonic wave receivable angle from the test piece to the probe in a plurality of states is used. A focal point type probe may be used as the above probe (). When this type of a probe is used, it is oriented such that an oscillating direction axis Lin the direction of which a reference axis along the propagation route of ultrasonic waves is oscillated around the focal point of the probe crosses the propagation element surface Lincluding the test piece surface of a ultrasonic wave propagation element.

Ultrasonic wave testing method and ultrasonic testing device using this method

An ultrasonic wave is sent from a transmission element to a test element to produce a plate wave in the test element, and the plate wave propagating through the test element is received by a reception element to thereby test the test element on the propagation route of the plate wave. The other probe that is the other reception element or transmission element is disposed between the transmission element and the reception element. A probe holding mechanism that has support legs contacting the surface of the test element and keeps constant an angle of the other probe with respect to the surface of the test element is allowed to support the other probe. And, the other probe is allowed to cross over in non-contact the propagation route of the plate wave extending from the transmission element to the reception element by means of support legs.

Ultrasonic testing method and ultrasonic testing device using this

An ultrasonic test method for detecting a defective portion more precisely in a noncontact reflection way, and ultrasonic test instrument used for the method. An ultrasonic wave is transmitted from a transmitter (()) provided on one side of an object under test, and the reflected wave is received by a receiver (()) provided on the same side. The ultrasonic wave is transmitted/received through an air layer between the transmitter and the object () under test and between the receiver and the object (). The relative positions of the transmitter (), the receiver (), and the object () are so determined that the air propagation time ta of the air path (RA) between the transmitter and the receiver is longer than the propagation time tb of the reflected wave in the reflection path (RB). The propagation of the ultrasonic wave through the solid body between the transmitter and the receiver is blocked. This invention is suitable to test laminated material () such as a laminate of CFRP () and insulation () in a noncontact way.

Ultrasonic test method and ultrasonic test instrument used for the method

Messages can be exchanged between two callers with ease by using an automatic telephone answering apparatus without calling the automatic telephone answering apparatus repeatedly. An automatic telephone answering apparatus which can automatically answer an incoming call includes a recording/reproducing unit (6) for recording an incoming call which the apparatus automatically answers, a call sound identifying circuit (8) for identifying a call sound contained in the incoming call signal, an identifying circuit (7) for identifying a predetermined control signal contained in the incoming call signal, and a flash switch (9) for temporarily opening a telephone line when the identifying circuits (7), (8) identify the call sound or the predetermined control signal. When the flash switch (9) temporarily opens the telephone line on the basis of identified results supplied thereto from the identifying circuits (7) and (8), the recording/reproducing unit (6) reproduces the incoming call signal recorded last. After the recording/reproducing unit (6) has reproduced the incoming call signal recorded last, the recording/reproducing unit (6) records an incoming call signal until the control signal identifying circuit (7) identifies the predetermined control signal.

Automatic telephone answering apparatus

A telephone includes a telephone body, a handset and a telephone network line hold mechanism. The telephone body includes a handset cradle on which the handset is placed, a plurality of operation buttons and the like. The telephone is placed in the offhook state when the user lifts the handset from the handset cradle and placed in the on-hook state when the user places the handset on the handset cradle. The telephone network line hold mechanism is energized when the user places the handset on the telephone body at its position in which the offhook state of the telephone is retained.

Telephone having a hold function

In a cordless telephone set, a base unit which itself has no loudspeaker function is made to provide a loudspeaker function at low cost. The base unit 2 has a transmitting circuit 22 for transmitting an aural signal and data to the handset 1 and a receiving circuit 23 for receiving and extracting the aural signal and data transmitted from the handset 1. A line interface circuit 25 coupled to a telephone line 3, a loudspeaker 44, and a selector circuit 28 for switching connection of the aural signal line between the transmitting circuit 22, the receiving circuit 23, the interface circuit 25, and the loudspeaker 44 are provided. In normal use, the transmitting circuit 22 and the receiving circuit 23 of the base unit 2 are connected with the line interface circuit 25 via the selector circuit 28. When predetermined push buttons 17 on the handset 1 are operated, the base unit 2 controls the selector circuit 28 so that the telephone line 3 is connected to the loudspeaker 44 via the selector circuit 28.

Cordless telephone system having base unit with speaker

A telephone apparatus including a decoder, a memory, a comparison circuit and an output device. The decoder serves to detect and decode telephone number information of a calling side transmitted with bell signals through a telephone line. The memory stores telephone number data of calling sides in correspondence with operation keys. When a call is received, the comparison circuit compares the output data of the decoder with the telephone number data stored in the memory. If a coincidence is detected between the output data of the decoder and the telephone number data of the memory based on the comparison result of the comparison circuit, the output device notifies a user that the call corresponds to one of the telephone number data stored in the memory. The output device includes indication units provided in correspondence with a plurality of operation keys, and a driving control circuit for selectively activating the indication unit of the operation key corresponding to the coincident telephone number data. Alternately, the output device may include audio data memory in which names of call sides are stored as audio data in correspondence with both the telephone number data stored in the memory and the operation keys, a speaker to which the audio data read out from the audio data memory are supplied, and a controller for reading out the audio data corresponding to the coincident telephone number data from the audio data memory and outputting the correct audio data.

Growing community of inventors

Chiba, Japan

Hiroshi Miyamoto