The present invention has as its object to inhibit fracture due to a HAZ softened part in substantially circular laser lap welding taking the place of resistance spot welding for joining a superposed plurality of steel sheets including a high strength steel sheet. To solve this problem, the inventors discovered lap welding comprising superposing a plurality of steel sheets and firing a laser to form a substantially circular laser weld ( 1 ), which lap welding firing the laser in a straight line through an outer edge of the substantially circular laser weld ( 1 ) so as to form a hardened part ( 8 ) at the steel sheets and thereby suppressing fracture arising from the HAZ softened part.

Lap welding method, lap joint, production method of lap joint, and an automobile part

PROBLEM TO BE SOLVED: To allow for provision of bidirectional content to a client device.SOLUTION: A client device receives a broadcast content signal including a bidirectional identifier over a managed network, in a client device. The bidirectional identifier may be included in a header, or embedded in digital video data. A trigger may have a time component, and may expire after some period. In response to identification of a trigger, a client device transmits a user request for bidirectional content over a non-managed network. For example, the managed network may be a one-way satellite television network, IP television network, or cable television network, and the non-managed network may be the Internet. The client device switches reception of data from the managed network, and reception of data from the non-managed network.

Provision of television broadcast over non-managed network and bidirectional content over non-managed network to client device

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Provision of television broadcast over non-managed network and bidirectional content over non-managed network to client device

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Provision of television broadcast over non-managed network and bidirectional content over non-managed network to client device

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