Adv Antest Corporation

Alcatel N.v.

Lsi Corporation

Detlef Müller

Dieter Kopp

Bernd Laquai

Markus Rottacker

Christian Krönke

Stefan Gross

Thomas Bossmeyer

Bernhard Mayer

Ingolf Martin

Alfred Rosenkränzer

A switch circuit includes at least a first and a second switch element connected in series and a switch control configured for providing control signals for switching the first and the second switch element, such that the control signals have a different timing and such that the first and the second switch element perform one joint switch function.

Switch circuit, method for operating a switch circuit and an automated test equipment

A test equipment has a signal input/signal output and a use-site calibration unit for determining a user-site compensation function. The user-site compensation function has a compensation magnitude function and a compensation Hilbert phase function. The calibration unit has a level meter and a calculator. The level meter is configured to measure a magnitude characteristic of the electrical signal, the magnitude characteristic being the basis for the determination of the compensation Hilbert phase function. The calculator is configured to determine a Hilbert phase characteristic of the electrical signal based on a Hilbert transformation of a function dependent on the measured magnitude characteristic and to determine the compensation Hilbert phase function on the basis of the Hilbert phase characteristic.

Test equipment, method for operating a test equipment and computer program

The present invention may relate generally to a circuit for converting a first digital signal having a first sample rate to second digital signal having a second sample rate. The circuit may comprise a cascaded integration-comb filter and a fractional sample rate converter. The fractional sample rate converter may be configured to perform fractional sample rate conversion. A first of the cascaded integrator-comb filter and the fractional sample rate converter may be configured to receive the first signal having the first sample rate and to generate a third digital signal having a third sample rate different from the first and second sample rates. A second of the cascaded integrator-comb filter and the fractional sample rate converter may be configured to receive the third signal having the third sample rate and to generate the second signal having the second sample rate.

Method and apparatus for digital sample rate conversion

To reduce the data in a video-server (SER), a compression of the video data of a video film is performed by coding according to the interframe method (K1). In addition, the video data of predetermined individual video pictures are coded according to the intraframe method (K2), and are stored (MEMO) as entry points parallel to the corresponding interframe-coded video data. When the video film is transmitted, only the interframe-coded video data are transmitted. In response to a request for fast forward or fast backward mode only, the video data of the entry point are transmitted intraframe-coded, and all subsequent video pictures are transmitted interframe-coded.

Device for storing video data

A (BA) for picture and speech information. The video-telephone answering set (BA) stores only particular, essential single pictures, preferably in synchronism with the speech, in a storage means (HS). By suitable signalling, the caller can determine the single pictures to be stored. For the storage means (HS), a semiconductor memory is proposed.

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Renningen, Germany

Detlef Müller