Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Isao Yamamoto

Masashi Watanabe

Taisuke Tsurui

Hideki Kirino

Koichi Kameyama

This high-frequency waveguide is formed by first and second conductors disposed opposite each other at a spacing of &#x3bb;/2, where &#x3bb;is the free space wavelength of the operating frequency of a high-frequency signal. A ridge is provided at the waveguide formation portion between these first and second conductors, which protrudes from one of the first and second conductors toward the other and is formed extending along the waveguide formation portion. A plurality of columnar protrusions with a height of &#x3bb;/4 are disposed at a spacing of less than &#x3bb;/2 to at least one of the first and second conductors on the outside of the waveguide formation portion and to the outside of the ridge.

High-frequency waveguide and phase shifter using same, radiator, electronic device which uses this phase shifter and radiator, antenna device, and electronic device equipped with same

A recording and reproduction allows recording and playback of video and audio signals. While viewing a recorded video and audio signal, it is sometimes desirable to switch to a real-time transmission. A time lag, however, can occur during this switching when a disk recording device is used. By providing a system with both a disk recording device and a high speed semiconductor recording device, it is possible to realize a smaller time lag and therefore smooth switching from a recorded signal to a real-time signal.

Information receiving/recording/reproducing apparatus and method thereof using a secondary memory device before switching to a real time transmission

An apparatus for recording/reproducing image data according to MPEG2 system is provided which obtains I picture data reliably and performs trick playback smoothly. In the apparatus, a PES packet including an I picture is detected from video coded data which is recorded on a recording medium by an I picture detection unit , an index file of the number of bytes from the start of recording or packet length and the like is created for the PES packet including the I picture data by a index file creation block , and the index file is recorded on an A/V-HDD ( ). In the trick playback process, a navigation control block obtains the index file, and then obtains the I picture data from the PES packet on the basis of the index file, thereby to perform the trick playback smoothly.

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Ehime, Japan

Isao Yamamoto