Method and apparatus for encoding signals

US 7,490,037 B2
Filed: 06/02/2005
Issued: 02/10/2009
Est. Priority Date: 07/01/1997
Status: Expired due to Fees

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1. A method of encoding signals, in particular digitized audio signals, the method comprising the steps of:

providing an encoding device for encoding a signal in an encoding format;

providing a processing device for processing the encoded signal; and

providing a control device for determining the encoding format, wherein the encoding format corresponds to at least one property of the processing device, and wherein the control device determines the encoding format by carrying out at least the following steps;

transmitting a test signal to the processing device, wherein the test signal is transmitted by a test signal generator of the control device; and

detecting at least one property of the processing device.

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Abstract

The invention concerns a method of encoding signals, in particular digitized audio signals, with an encoding device for encoding the signal in an encoding format and a processing device for processing the encoded signal.

Methods of that kind are known for example from European patent specification No 290 581. In that case, in the bit rate-reducing encoding of audio signals which are already present in digitized form, for example 48 kHz sampling frequency/16-bit resolution, psycho-acoustic phenomena of the perception of audio signals are used in such a way that the original bit rate of the audio signals is considerably reduced. Such methods are also familiar and standardised under the heading of ‘source encoding’ (ISO 11172 and 11318).

The object of the invention is to provide a method of the kind set forth in the opening part of this specification, which resolves the above-indicated problems and in which re-coding operations, once encoding has been effected, are very substantially avoided.

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32 Claims

1. A method of encoding signals, in particular digitized audio signals, the method comprising the steps of:
- providing an encoding device for encoding a signal in an encoding format;
  
  providing a processing device for processing the encoded signal; and
  
  providing a control device for determining the encoding format, wherein the encoding format corresponds to at least one property of the processing device, and wherein the control device determines the encoding format by carrying out at least the following steps;
  
  transmitting a test signal to the processing device, wherein the test signal is transmitted by a test signal generator of the control device; and
  
  detecting at least one property of the processing device.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- - 2. The method as set forth in claim 1, wherein the processing device includes at least one of a transmitting device for transmission of the encoded signal and a storage device for storage of the encoded signal and a decoding device for decoding of the encoded signal.
  - 3. The method as set forth in claim 1, wherein the processing device is a transmission device for transmission of the encoded signal, and wherein the transmission device is used for simultaneously transmitting and receiving the encoded signal.
  - 4. The method as set forth in claim 1, wherein the processing device is a transmitting device for transmission of the encoded signal and wherein the transmission device has a decoding device for simultaneous decoding upon the reception of an encoded signal.
  - 5. The method as set forth in claim 1, wherein the encoding format corresponds to the processor power of the processing device so that the encoding format is determined in such a way that it is processed by the processing device in real time.
  - 6. The method as set forth in claim 5, wherein the processing device is a transmission device for transmission of the encoded signal and wherein the encoding format corresponds to the power of the transmission device so that the transmission device can affect transmission in real time.
  - 7. The method as set forth in claim 1, wherein the at least one property of the processing device is called up out of a storage means prior to encoding.
  - 8. The method as set forth in claim 1, wherein, prior to encoding of the signal, by a display/input device, the user of the encoding device is asked to do at least one of:
    - preset the desired encoding format and preset the at least one property of the selected processing device, and encoding is affected in accordance with the presetting.
  - 9. The method as set forth in claim 1, wherein the signal is digitized prior to the encoding operation.
  - 10. The method as set forth in claim 1, wherein the signal is encoded in a bit rate-reduced encoding format.
  - 11. The method as set forth in claim 1, wherein the signal is a digitized audio signal and the signal is source-encoded having regard to psycho-acoustic phenomena.
  - 12. The method as set forth in claim 1, wherein transmission and/or storage devices of varying capacity are available as processing devices and prior to transmission and/or storage of the signals, in the case of signals of higher quality, that is to say with a larger amount of data, a transmission device and/or storage device of larger capacity is selected and in the transmission and/or storage of signals of lower quality, that is to say with a smaller quantity of data, a transmission device and/or storage device of smaller capacity is selected.
  - 13. The method as set forth in claim 1, wherein the signals to be sent are audio signals, wherein the audio signals are encoded in bit rate-reduced form by the encoding device, wherein a plurality of transmission channels and/or bit rates are available for transmission of the signal and wherein the transmission channel and/or the bit rate in the transmission are so selected that the signal can be transmitted in real time.
  - 14. The method as set forth in claim 13, wherein a fixedly preset computing power is adopted for operation in real time.
  - 15. The method as set forth in claim 1, wherein the processing device is a transmitting device for transmission of the encoded signal and wherein the transmission device has a decoding device for simultaneous decoding upon the reception of an encoded signal, and wherein a fixedly preset computing power is adopted for operation in real time and wherein with simultaneous transmission and reception in real time the encoding formats of the encoding and decoding devices are selected in accordance with the predetermined computing power.
  - 16. The method as set forth in claim 15, wherein presetting in respect of the distribution of the computing power and thus the choice of the encoding format in regard to a preference for the encoding device or the decoding device or parity of the two is affected by an input device.

17. Apparatus for encoding signals comprising:
- an encoding device for encoding a signal in an encoding format;
  
  a processing device for processing the encoded signal; and
  
  a control device for determining the encoding format, wherein the encoding format corresponds to at least one property of the processing device, and wherein the control device determines the encoding format by carrying out at least the following steps;
  
  transmitting a test signal to the processing device, wherein the test signal is transmitted by a test signal generator of the control device; and
  
  detecting at least one property of the processing device.
- View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
- - 18. Apparatus as set forth in claim 17, wherein, a transmission device is connected to the control device as a processing device for transmission of the signals to a receiver, wherein the encoding format corresponds to the properties of the transmission device.
  - 19. Apparatus as set forth in claim 18, wherein the encoding format corresponds to the bit rate of the transmission device.
  - 20. Apparatus as set forth in claim 17, having a storage device connected to the control device, as a processing device, for storage of the signals, wherein the encoding format corresponds to at least one property of the storage device.
  - 21. Apparatus as set forth in claim 17, having a decoding device connected to the control device, as a processing device, for decoding of the signals, wherein the encoding format corresponds to at least one property of the decoding device.
  - 22. Apparatus as set forth in claim 17, wherein the test signal is an encoded audio signal.
  - 23. Apparatus as set forth in claim 17, wherein a display/input device is connected to the control device.
  - 24. Apparatus as set forth in claim 17, wherein a storage unit is connected to the control device and in which at least one encoding format is stored.
  - 25. Apparatus as set forth in claim 24, wherein the storage unit stores the properties of the processing device and the encoding formats corresponding to the at least one property of the processing device.
  - 26. Apparatus as set forth in claim 17, wherein all settings can be implemented manually.
  - 27. Apparatus as set forth in claim 17, wherein there is provided a display which displays the current transmission time of the transmission device/storage time of the storage device and/or the remaining transmission time of the transmission device/storage time of the storage device.
  - 28. Apparatus as set forth in claim 17, wherein there is provided a mixing stage which prior to transmission with the transmission device and/or storage with the storage device mixes together a plurality of monophonic and/or stereophonic audio signals.
  - 29. Apparatus as set forth in claim 17, wherein the signal which is to be transmitted with the transmission device and/or stored with the storage device and/or which is received from the transmission device can be listened to in a listening device.
  - 30. Apparatus as set forth in claim 17, wherein the level of the signal which is to be transmitted with the transmission device and/or stored with the storage device and/or which is received from the transmission device can be displayed by a level display.
  - 31. Apparatus as set forth in claim 17, wherein, provided for respective ones of various processing devices, is a respective control device, wherein the individual control devices exchange the properties of the processing device interrogated thereby with one or more of the other control devices.
  - 32. Apparatus as set forth in claim 17, wherein the control device can be operated either cable-less or via a cabled interface.

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Litigation Data

Current Assignee
Digital Audio Encoding Systems, LLC (Equitable IP Corporation)
Original Assignee
MAYAH Communications GmbH
Inventors
Wiese, Detlef, Rimkus, Joerg
Primary Examiner(s)
Vo, Huyen X.

Application Number

US11/143,011
Publication Number

US 20050240415A1
Time in Patent Office

1,349 Days
Field of Search

704/200.1, 704/228, 704/500, 704/501, 704/502, 704/503, 704/504, 704/229, 704/230, 704/201, 700/94, 369/59.12, 369/275.3
US Class Current

704/230
CPC Class Codes

G10L 19/18 Vocoders using multiple modes

H04B 1/665 using psychoacoustic proper...

Method and apparatus for encoding signals

First Claim

3 Assignments

Litigations

4 Petitions

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Abstract

6 Citations

32 Claims

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Method and apparatus for encoding signals

First Claim

3 Assignments

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4 Petitions

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Accused Products

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Abstract

6 Citations

32 Claims

Specification

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Solutions

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