Digital audio device

• US 20030220785A1
• Filed: 10/31/2002
• Published: 11/27/2003
• Est. Priority Date: 11/01/2001
• Status: Active Grant

• Current Assignee: Mattel Incorporated
• Original Assignee: Mattel Incorporated
• Inventors: Nielsen, Paul, Collins, Gary, Harmon, Kevin
• Granted Patent: US 7,653,206 B2
• Time in Patent Office: Days
• US Class Current: 704/201
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00768 wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/00014 the compressed signal being an audio signal
• CPC Class Codes: G11B 2020/10546 specifically adapted for audio data
• CPC Class Codes: G11B 2220/2512 Floppy disks
• CPC Class Codes: G11B 2220/2529 Mini-discs
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/61 wherein solid state memory is used for storing A/V content
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11C 2207/16 Solid state audio
• CPC Class Codes: G11C 7/16 Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
• CPC Class Codes: H04H 60/04 Studio equipment; Interconnection of studios
• CPC Class Codes: H04H 60/27 Arrangements for recording or accumulating broadcast information or broadcast-related information
• CPC Class Codes: H04H 60/80 characterised by transmission among terminal devices
• CPC Class Codes: H04N 2005/91328 the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/436 Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/4788 : communicating with other users, e.g. chatting arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/8113 : comprising music, e.g. song in MP3 format
• CPC Class Codes: H04N 21/8355 : involving usage data, e.g. number of copies or viewings allowed
• CPC Class Codes: H04N 5/913 : for scrambling ; for copy protection
• CPC Class Codes: H04N 7/173 : with two-way working, e.g. subscriber sending a programme selection signal

Abstract

A digital audio device. According to one aspect of the invention, the device includes a memory and an analog input system configured to record analog audio signals to the memory as digital audio data. The device further includes a digital input configured to download digital audio data to the memory, as well as an analog output system configured to generate analog playback signals decoded from digital audio data stored in the memory. Furthermore, the device includes a digital output configured to upload digital audio data from the memory.

Claims

1. A digital audio device, comprising:

a memory;

an analog input system configured to record analog audio signals to the memory as digital audio data;

a digital input configured to download digital audio data to the memory;

an analog output system configured to generate analog playback signals decoded from digital audio data stored in the memory; and

a digital output configured to upload digital audio data from the memory.

2. The digital audio device of claim 1, wherein the memory includes semiconductor memory.

3. The digital audio device of claim 1, wherein the memory includes a nonvolatile memory portion and a volatile buffer memory portion.

4. The digital audio device of claim 1, wherein the analog input system includes a radio tuner configured to receive the analog audio signals.

5. The digital audio device of claim 1, wherein the analog input system includes a microphone configured to convert sound energy into the analog audio signals.

6. The digital audio device of claim 1, wherein the analog input system includes an analog interface configured to receive the analog audio signals.

7. The digital audio device of claim 1, wherein the analog input system includes an analog-to-digital converter.

8. The digital audio device of claim 1, wherein the analog input system includes a data compressor.

9. The digital audio device of claim 1, wherein the analog input system is further configured to selectively transfer the analog audio signals directly to the analog output system.

10. The digital audio device of claim 1, wherein the analog output system includes a data expander.

11. The digital audio device of claim 1, wherein the analog output system includes a digital-to-analog converter.

12. The digital audio device of claim 1, wherein the analog output system includes a signal amplifier.

13. The digital audio device of claim 1, wherein the analog output system includes a sound transducer configured to convert the generated analog playback signals into sound energy.

14. The digital audio device of claim 1, wherein the device is configured to adhere to a copyright management scheme.

15. The digital audio device of claim 14, wherein the digital output is configured to prohibit sharing data associated with a prevention code.

16. The digital audio device of claim 14, wherein the digital input is configured to convert a restriction code associated with digital audio data to a prevention code when the digital audio data is downloaded from another device.

17. The digital audio device of claim 1, wherein the memory, analog input system, analog output system, digital input, and digital output are commonly housed by a body configured for portable use.

18. The digital audio device of claim 1, further comprising a trade connector configured to align the digital audio device in a fixed position relative to a second digital audio device.

19. The digital audio device of claim 18, wherein the trade connector includes at least one contact configured to cooperate with a complementarily configured contact of the second digital audio device, wherein the cooperating contacts of the digital audio devices establish a communication path for exchanging digital audio data between the digital audio devices.

20. A portable digital audio device, comprising:

a memory;

an analog input system configured to record an analog audio signal to the memory as digital audio data with an associated restriction code;

a digital input system configured to download digital audio data to the memory with an associated prevention code;

an analog output system configured to generate analog playback signals decoded from digital audio data stored in the memory; and

a digital output system configured to upload digital audio data with an associated restriction code from the memory to another device.

21. The digital audio device of claim 20, wherein digital audio data is uploaded to the other device with an associated prevention code to prevent further sharing from the other device.

22. The digital audio device of claim 20, wherein upon uploading digital audio data associated with a restriction code, the digital output system is configured to convert the restriction code to a prevention code to prevent further uploading from the digital audio device.

23. A portable digital audio device, comprising:

an analog interface configured to receive analog audio signals;

an analog-to-digital converter configured to convert the analog audio signals into uncompressed digital audio data;

a data compressor configured to convert the uncompressed digital audio data into compressed digital audio data;

a semiconductor memory configured to store compressed digital audio data;

a data expander configured to convert the compressed digital audio data into expanded digital audio data;

a digital-to-analog converter configured to convert the expanded digital audio data into an analog playback signal.

24. The digital audio device of claim 23, further comprising a digital sharing system configured to share compressed digital audio data with another device.

25. The digital audio device of claim 23, wherein the digital output is configured to prohibit sharing digital audio data associated with a prevention code.

26. A radio for sharing digitally recorded audio, comprising:

a radio tuner configured to receive radio signals corresponding to an audio track;

a memory configured to store the audio track as digital audio data; and

a sharing system configured to copy the digital audio data to another device.

27. The radio of claim 26, wherein the sharing system is additionally configured to copy digital audio data from another device to the memory.

28. A digital audio device, comprising:

a memory; and

a sharing system configured to copy digital audio data to and from the memory, wherein the sharing system includes a trade connector configured to align the digital audio device in a fixed position relative to a second digital audio device.

29. The digital audio device of claim 28, wherein the trade connector includes at least one contact configured to cooperate with a complementarily configured contact of the second digital audio device, wherein the cooperating contacts of the digital audio devices establish a communication path for exchanging digital audio data between the digital audio devices.

30. The digital audio device of claim 28, further comprising a trade door configured to selectively protect the trade connector.

31. The digital audio device of claim 30, wherein the trade door is configured to rotate about a pivot

32. The digital audio device of claim 30, wherein the trade door is configured to be selectively raised and lowered.

33. The digital audio device of claim 28, further including at least one manipulable control configured to initiate copying digital audio data, wherein the control is accessible when the digital audio device is aligned in a fixed position relative to the second digital audio device.

34. The digital audio device of claim 28, wherein the trade connector is shaped to mate with an identically configured trade connector of the second digital audio device.

35. The digital audio device of claim 34, wherein the trade connector includes a raised wall and a recessed trough, both shaped to cooperate with the identically configured trade connector of the second digital audio device, wherein the raised wall of the trade connector is configured to extend into a corresponding recessed trough of the identically configured trade connector of the second digital audio device, and the recessed trough is configured to receive a raised wall of the identically configured trade connector of the second digital audio device.