Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/41—Structure of client; Structure of client peripherals
  • H04N21/4104—Peripherals receiving signals from specially adapted client devices
  • H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
  • H04N21/41265—The peripheral being portable, e.g. PDAs or mobile phones having a remote control device for bidirectional communication between the remote control device and client device
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/41—Structure of client; Structure of client peripherals
  • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
  • H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N7/00—Television systems
  • H04N7/16—Analogue secrecy systems; Analogue subscription systems
  • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
  • H04N7/17309—Transmission or handling of upstream communications
  • H04N7/17318—Direct or substantially direct transmission and handling of requests
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
  • H04N5/91—Television signal processing therefor
  • H04N5/93—Regeneration of the television signal or of selected parts thereof

Definitions

• the invention relates to a method for displaying video data according to the category of the independent claim.
• the method according to the invention for displaying video data with the features of the independent claim has the advantage that video data that is present on a data carrier in the car with an electronic companion, preferably a personal digital assistant (PDA) or a mobile phone (UMTS), which has a large display.
• video decoding is carried out on the electronic companion. This relieves the processor of the car radio as the radio receiver.
• a car radio also has a display that is too small, for example, to show full-length feature films on it.
• the electronic companion can now do this be used.
• this can also be done as required, ie people who want to buy a personal digital assistant anyway have an additional benefit, while others who do not display video in the car do not have to buy unnecessary hardware.
• the audio decoding of the audio data associated with the video data can either be decoded and played back by the PDA or used by the car radio to use the car radio's stereo system.
• Broadcast receivers send the video data in a broadcast mode to various electronic attendants, so that more than one electronic attendant is able to display the video data simultaneously. It can in particular be provided that an ensemble of video data is provided so that several users can watch different videos with their respective PDAs.
• the electronic attendant transmits control data for the data carrier to the car radio in order to call up special data from the data carrier. It may be necessary, for example, if the video data is repeated or if the video data is called up specifically.
• a car radio for carrying out the method according to the invention, which has a reading device for the data carrier, a first processor for decoding audio data, and a first one Interface for transmitting the data from and to the electronic companion and means for reproducing the audio data.
• the interface for the transmission of data is either an infrared, a radio or a wired transmission interface.
• an electronic attendant for carrying out the method according to the invention has a compatible interface, a second processor for decoding the video data and a display for reproducing the video data.
• the processor of the electronic attendant is also designed to decode the audio data.
• the electronic companion is connected to means for acoustic reproduction of the audio data, that is to say to a loudspeaker, provided that they are not already integrated in the electronic companion.
• FIG. 1 shows an illustration of a device according to the invention
• FIG. 2 shows a block diagram of the device according to the invention
• FIG. 3 shows a flow diagram of the method according to the invention.
• MPEG2 and MPEG4 are used as source encodings. This makes it possible to save high-quality full-length videos on one medium.
• MPEG4 it is now proposed to use an electronic companion on which video data stored on a data carrier, that is to say on a CD or a DVD, in the car radio as one Radio receivers are present.
• video formats such as DFX or RealVideo are also possible, which enable even higher compression.
• Electronic companion is understood here not only as a PDA, but also as a mobile phone, which has a large display, particularly in UMTS, and is therefore suitable for displaying videos.
• a car radio is understood as a radio receiver.
• TV tuner is available as a radio receiver.
• Analogue tuners, DVB (Digital Video Broadcasting) and DMB (Digital Multimedia Broadcasting) can be used as TV channels.
• FIG. 1 shows a first representation of a device according to the invention.
• a car radio 1 with a drive 2 for a data carrier, an input device 18 and with an interface 3 is connected via the interface 3 to a personal digital assistant (PDA) 4, which is the electronic companion.
• PDA 4 has a display 5 and an input device 25.
• the input device 18 or 25 is designed here as a keyboard, but voice control or other input elements are also possible.
• Drive 2 is used here for CD ROMs, however, a drive for DVDs, chip cards and mini disks can also be used as an alternative.
• the car radio 2 it is possible to receive radio programs on the one hand and to play data carriers on the other.
• the audio or video data is located on the data carriers.
• the CD-ROM or the alternative storage media are also used for storing received multimedia data, because when receiving digital radio signals, as is the case with DAB (Digital Audio Broadcasting) is the case, almost any multimedia data such as video can be transmitted.
• DAB Digital Audio Broadcasting
• the interface 3 is designed here as a radio interface, for example using Bluetooth, but it can also be designed as an infrared interface or as a wired interface.
• the PDA which has the video decoding software, has the display 5, which is designed here as an LCD screen.
• Bluetooth in particular enables a broadcast mode so that several users can watch videos with their PDAs at the same time. By sending an ensemble of video data, it is also possible for different users to watch different videos. In this case, the video and audio decoding should then be carried out by the individual PDAs, and the audio data can then be played back using headphones connected to the respective PDAs.
• the video data are read by the car radio from the data carrier 2 and transmitted via the interface 3 to the PDA 4, which then decodes the video data with its video decoding software or hardware and displays them on the display 5.
• the decoding of the audio data which may belong to the video data, is either carried out by the car radio itself or by the PDA 4. It is also possible for the audio data, which belong to the video data, to be separated from the PDA 4 and back again to the Car radio are transmitted so that the car radio then takes over the decoding of the audio data and their reproduction.
• FIG. 2 shows a block diagram of the device according to the invention shown in FIG. 1.
• the car radio 1 has the following components: one antenna 6, one High-frequency receiver 7, a processor 8, a memory 9, a data carrier 10, an audio amplifier 20, a loudspeaker 21, a signal processor 17, an input device 18, a Bluetooth reception module 11 and an antenna 12.
• the antenna 6 is for receiving the radio signals connected to the radio frequency receiver 7.
• the high-frequency receiver 7 filters, amplifies and converts the received radio signals into an intermediate frequency. Furthermore, the
• High-frequency receiver 7 digitizes the received radio signals so that the further processing can take place digitally.
• Channel and source decoding is then performed by processor 8, which is connected via a first data input / output.
• Processor 8 is connected to data carrier 10 via a second data input / output, from which processor 8 loads the corresponding video and audio data for playback or transmission to PDA 4.
• the processor 8 optionally uses control data from the PDA 4.
• the processor 8 uses a memory 9 connected via a third data input / output.
• the audio data which the car radio 1 itself reproduces are then sent from the processor 8 to the audio amplifier 20 transmitted, which then uses a speaker 21 for acoustic reproduction.
• the processor 8 is connected to the Bluetooth transceiver module 11 via a fourth data input / output.
• the antenna 12 for sending and receiving the signals is connected to the Bluetooth transceiver module 11 via a second data input / output.
• a user uses the input device 18 as an input medium, and the signal processor 17 formats the input data for the processor 8.
• the PDA 4 has an antenna 13 for receiving and sending Bluetooth signals that are sent to a first data Input / output of a Bluetooth transmission / reception module 14 is connected.
• the Bluetooth transmission / reception module 14 is connected to a processor 15 via a second data input / output.
• the processor 15 is connected to a memory 16 via a second data input / output.
• the processor 15 is connected via a first data output to an audio amplifier 22, which in turn is connected to a loudspeaker 23.
• the processor 15 is connected via a second data output to a signal processing unit 19 which controls the display 5.
• the processor 15 is connected to a via a data input
• Signal processing 24 connected, which converts input signals from the input device 25 for the processor 15.
• the Bluetooth transmission / reception modules 11 and 14 carry out transmission or reception amplification, filtering and digital-to-analog conversion or analog-to-digital conversion. Analog signals are used for the radio transmission and the received signals are then converted back into digital signals for further processing.
• the inventive method for displaying video data is shown as a flow chart.
• the video data are loaded from the data carrier 10 in the car radio 1 by the processor 8. They are then temporarily stored in the memory 9, if necessary, in order to then transfer them to the PDA 4. If necessary, audio data are separated from the video data here.
• the video data are then transmitted to the PDA 4 as Bluetooth signals by means of the Bluetooth transceiver module 11 and the antenna 12. With the antenna 13 and the Bluetooth transmission / reception module 14, the Receive video data and transmit it to the processor 15 of the PDA 4.
• the PDA 15 carries out the decoding of the video data in method step 28.
• the PDA 15 has appropriate video decoding software and / or / hardware.
• the processor 15 uses the memory 16 as a buffer.
• the audio data are then decoded either by processor 15 or by processor 8.
• method steps 31 and 33 which run essentially in parallel, the audio data or the video data are then reproduced either by means of the loudspeaker 21 or 23 and the display 5.
• the display 5 of the PDA 4 is optimized. For example, reducing the resolution and colors of the image, rotating the image by 90 °, and reducing the frame rate. Since the display 5 of the PDA 4 is generally more high than wide, but the videos are more wide than high, a rotation by 90 ° makes sense for a user.

Landscapes

• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Circuits Of Receivers In General (AREA)
• Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
• Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
• Mobile Radio Communication Systems (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7676049

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (8)

Citations (5)

Family Cites Families (18)

• 2001
  • 2001-03-02 DE DE10110043A patent/DE10110043A1/de not_active Withdrawn
  • 2001-12-19 DE DE50105223T patent/DE50105223D1/de not_active Expired - Lifetime
  • 2001-12-19 US US10/450,888 patent/US7397513B2/en not_active Expired - Fee Related
  • 2001-12-19 EP EP01990321A patent/EP1368966B1/de not_active Expired - Lifetime
  • 2001-12-19 JP JP2002570526A patent/JP3981012B2/ja not_active Expired - Fee Related
  • 2001-12-19 WO PCT/DE2001/004793 patent/WO2002071744A1/de not_active Ceased

Patent Citations (5)

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