U.S. Philips Corporation

Koninklijke Philips Corporation N.v.

Other

Matsushita Electric Industrial Co., Ltd.

Makoto Asano

Hidetoshi Takeda

Shinji Hamai

Adolf Proidl

Ronald W Saeijs

Franz Kuchar

Werner Blümel

Werner Bl&uuml;mel

A recording device for recording digital recording data in a recording mode of the recording device comprises data bus means to which a digital data bus can be connected and which are designed for receiving input data transmitted in at least a first input channel of the data bus. Received input data can be processed by processing means and be recorded as recording data on a data carrier by recording means of the recording device. The recording device further comprises test means for testing whether input data are received in the first input channel. Furthermore, a record-prepared mode can be activated in the recording device, and the test means, with the record-prepared mode being activated, are designed for activating the recording mode for recording input data received in the first and/or in at least one second input channel as recording data for the duration of reception of input data in the first input channel.

Recording device with a record-prepared mode for recording digital data

A processor for analog and digital audio, video, and control information has analog connections to supply analog A/V signals and output control information to a television set. At the beginning of a recording mode in the DVHS video recorder, when an A/V signal (which may be a processed digital reception signal) of a television program just being displayed on the television set is applied to the television set, the signal is supplied to the DVHS video recorder as an A/V signal via an analog connection and/or as digital A/V data via a digital connection. An A/V signal of a television program being displayed on the television set and supplied by its tuner is transferred from one analog connection to another analog connection from the beginning of a recording mode in the DVHS video recorder, as a result of which the A/V signal is recorded by the DVHS video recorder.

Set top box which enables television program displayed on a television set to be recorded by means of a video recorder

Disclosed is a packet transmitting/receiving apparatus that receives a response packet to a transmitted request packet without fail. When a request packet is transmitted by a packet transmitter, a prediction of a response packet is made in reply to the transmitted request packet. When the response packet is received from a transmission medium, a comparator compares a portion of the packet received by a receiver with a portion of the packet and, only when they match, outputs the received packet. In this way, the expected response packet is received without fail. This enhances the reliability of the transmission medium.

Packet transmitter-receiver and packet receiver

A program is selected from a plurality of programs in an MPEG transport stream for recording on a record carrier. The presence of a program clock reference (PCR) value in a packet in the stream is detected. The packet identifier for the packet is retrieved and stored. Clock reference signals of subsequent packets with a packet identifier equal to the stored packet identifier, are retrieved. The program clock references are used to synchronize a clock counter. Each recorded packet is time stamped according to the clock counter. If clock reference signal is not received within 100 ms, then a packet with a PCR value with a different packet identifier is retrieved and the stored packet identified is replaced by the different packet identifier.

Method and apparatus for recording digital information signals in which,

A packet output device for formatting serial data into packets and for transmitting resulting data packets includes a data packet generator for generating each data packet and for generating time data corresponding to the data packet, the time data defining an output time of the data packet, and a packet transmitting circuit for receiving the data packet and the corresponding time data and transmitting the data packet based on the corresponding time data.

Packet output device and packet output method

The invention has an object to provide a digital VCR with a packet communication interface to a packet communication bus, which VCR can be used for reproduction, recording and editing in which image signals from two or more reproduction VCRs are mixed. A synchronization buffer is provided in the interface in which a data in accordance with synchronizing data which is contained in a packet 6 is stored. Image signal data received from the bus or to be transmitted to the bus is stored in a separate transmission buffer. The VCR can be switched between different modes in which the direction of synchronization data flow (from the bus or to the bus) and image signal data flow can be selected independently of one another. Data for storing in the synchronization buffer is selected from the packet 6 by controlling of an external synchronization controller. A capacity of the synchronization buffer is smaller than a capacity of the transmission buffer, because of that a selected data from the packet 6 is stored in this buffer only.

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Vienna, Austria

Makoto Asano