Novel Karaoke and Multi-Channel Data Recording / Transmission Techniques via Wavefront Multiplexing and Demultiplexing

• US 20110197740A1
• Filed: 08/02/2010
• Published: 08/18/2011
• Est. Priority Date: 02/16/2010
• Status: Abandoned Application

• Current Assignee: Spatial Digital Systems Inc
• Original Assignee: Spatial Digital Systems Inc
• Inventors: Chen, Steve, Chang, Donald C.D.
• Application Number:
  US12/848,953
• Publication Number:
  US 20110197740A1
• Time in Patent Office: Days
• US Class Current: 84/610
• CPC Class Codes: G10H 1/361 Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems

Abstract

An advanced channel storage and retrieving system is achieved that is capable of simultaneously transporting multiple-stream data concurrently, with encryptions and error detection and limited correction capability using wavefront (WF) multiplexing (muxing) at the pre-processing and WF demultiplexing (de-muxing) in the post-processing. The WF muxing and demuxing processing can be applied for multiple signal streams with similar contents and format such as cable TV delivery systems or multiple signal streams with very distinct contents and format such as Karaoke multimedia systems. The stored or transported data are preprocessed by a WF muxing processor and are in the formats of multiple sub-channels. Signals in each sub-channel are results of unique linear combination of all the input signals streams. Conversely, an input signal stream is replicated and appears on all the sub-channels. Furthermore the replicated streams in various sub-channels are “linked” together by a unique phase weighting vector, which is called “wavefront” or WF. Various input signal streams will feature different WFs among their replicated signal streams in the sub-channels. The WF muxing processing is capable to generating a set of orthogonal WFs, and the WF demuxing processing is capable of reconstituting the input signal streams based on the retrieved sub-channel data only if the orthogonal characteristics of a set of WFs are preserved. Without the orthogonality among the WF, the signals in sub-channels are mixed and become effectively pseudo random noise. Therefore, an electronic locking mechanism in the preprocessing is implemented to make the WFs un-orthogonal among one another. Similarly, an electronic un-locking mechanism in the post-processing is implemented to restore the orthogonal characteristics among various WFs embedded in the sub-channel signals. Some of the phenomena due to the selected locking mechanisms are reproducible in nature, such as wave propagating effects, and other are distinctively man-made; such as switching sub-channel sequences. There are other conventional encryption techniques using public and private keys which can be applied in conjunction with the WF muxing and de-muxing processor, converting plain data streams into ciphered data streams which can be decoded back into the original plain data streams. An encryption algorithm along with a key is used in the encryption and decryption of data. As to the optional parallel to serial and serial to parallel conversions in the pre and post processing, respectively, we assume that transmissions with single carrier are more efficient than those with multiple carriers. We also assume single channel recording is more cost effective than multiple channel recording. However, there are occasions that continuous spectrum is hard to come-by. We may use fragmented spectrum for transmissions. There are techniques to convert wideband waveforms using continuous spectra into multiple fragmented sub-channels distributed on non-continuous frequency slots. Under these conditions we may replace the parallel to serial conversion processing by a frequency mapping processor.

Claims

1. A novel multi-channel data storage/retrieving system comprising:

a multi-channel data storage processing utilizing wavefront multiplexing and a multi-channel data retrieving processing using wavefront de-multiplexing.

2. The multi-channel data storage system of claim 1, wherein an array of M input data streams configured as an array of concurrent N sub-channel signals through a wavefront multiplexing processing (101) with N-inputs and N-outputs, where M is greater than 1 and N is no less than M, whereby

the remaining N-M inputs (108) to the wavefront multiplexing processing (101) are for diagnostics and authentications as options,

an array of N sub-channel signals (105) are encrypted simultaneously through an optional electronic locking processing (102) with N concurrent outputs (106), consisting of N encrypted signals streams,

an array of N encrypted signals streams (106) are converted into a single stream (107) through an optional parallel to serial conversion processing (103),

a single stream of data (107) to be recorded electronically on portable storage devices (121), and

multi-channel concurrent data (106) will be recorded on portable storage devices (121) directly when there is no optional parallel to serial conversion processing.

3. A multi-channel data retrieving system of claim 1, wherein a single data stream (117) or multiple concurrent data streams (116) retrieved electronically from storage devices (121) comprising:

an array of encrypted N concurrent signals streams (116) are converted from a single data stream (117) through an optional serial to parallel conversion processing (113);

an array of N sub-channel signals (115) are decrypted simultaneously through an optional electronic un-locking processing (112) with N concurrent outputs of decrypted signals streams, or N sub-channel signals (115);

an array of N sub-channel data streams (115), configured as an array of multiplexing concurrently retrieved M data streams (114) through a wavefront de-process (111), where M>

1 and N is no less than M.

4. A novel multi-channel data real time transport system comprising:

a multi-channel data transmission processing utilizing wavefront multiplexing and a multi-channel data receiving processing using wavefront de-multiplexing.

5. A multi-channel data transmission processing of claim 4, wherein an array of M input data streams configured as an array of concurrent N sub-channel signals through a wavefront multiplexing processing with N-inputs and N-outputs, where M is greater than 1 and N is no less than M, whereby

the remaining N-M inputs to the wavefront multiplexing processing are for real time diagnostics and authentications as options,

an array of N sub-channel signals are encrypted simultaneously through an electronic locking processing with N concurrent outputs, consisting of N encrypted signals streams,

an array of N encrypted signals streams are converted into a single stream through a parallel to serial conversion processing,

a single stream of data to be transmit electronically to remote sites via wired or wireless means.

6. A multi-channel data receiving system of claim 4, wherein a single stream of data retrieved electronically in real time via wired or wireless means, whereby

an array of encrypted N concurrent signals streams are converted from a single stream through a serial to parallel conversion processing,

an array of N sub-channel signals are decrypted simultaneously through an electronic un-locking processing with N concurrent outputs of decrypted signals streams, or N sub-channel signals.

7. The wavefront multiplexing process of claim 5, wherein the remaining N-M inputs are grounded periodically for real time diagnostic, calibration and equalization of wired or wireless transport means.

8. The wavefront multiplexing process of claim 5, wherein the remaining N-M inputs are injected by unique dynamic data flow patterns periodically for data authentication.

9. The wavefront de-multiplexing process of claim 6, wherein the remaining N-M outputs are utilized in an optimization process periodically for real time diagnostic, calibration and equalization of wired or wireless transport means, whereby

the N-M output signals as measured as the index for cost functions, and summing of all cost functions are total cost equalizations:

equalization via an optimization processing which is based on total cost minimizations for updating the weighting on sub-channels in the un-locking processing,

equalization and calibrations are achieved when total cost is below a pre-determined threshold.

10. The wavefront de-multiplexing process of claim 6, wherein the remaining N-M outputs are utilized in an authentication process under the conditions that the sub-channels are fully equalized,

the N-M output signals will be compared with pre-stored dynamic data patterns periodically,

when the quantified difference below a threshold, the received data will be considered and used as authenticated data,

otherwise, they are not authenticated data.

11. A novel Karaoke data storage/retrieving system comprising:

a Karaoke data storage processing utilizing wavefront multiplexing and a Karaoke data retrieving processing using wavefront de-multiplexing.

12. The Karaoke data storage system of claim 11, wherein an array of M input data streams consisting of M1 audio tracks and M2 video data streams, where M1+M2=M, whereby

there are M1 separable audio tracks, which are generated from combinations of accompanied high fidelity stereo music and artist vocal streams in various languages and/or dialects,

different subsets of M1 audio tracks will serve various applications in playing Karaoke;

in learning modes, practice modes, and/or playing modes, and

a high quality video stream input for back ground videos is divided into M2 video data streams;

so that the required sub-channel bandwidth is reduced by a factor of M2.

13. The Karaoke data storage system of claim 11, wherein an array of M input data streams configured as an array of concurrent N sub-channel signals through a wavefront multiplexing processing with N-inputs and N-outputs, where M>

1 and N is no less than M, whereby

the remaining N-M inputs to the wavefront multiplexing processing are for diagnostics and authentications as options,

an array of N sub-channel signals are encrypted simultaneously through an electronic locking processing with N concurrent outputs, consisting of N encrypted signals streams,

an array of N encrypted signals streams are converted into a single stream through a parallel to serial conversion processing, and

a single stream of data to be recorded electronically on storage devices.

14. A Karaoke data retrieving system of claim 11, wherein a single stream of data retrieved electronically from storage devices, whereby

an array of encrypted N concurrent signals streams are converted from a single stream through a serial to parallel conversion processing,

an array of N sub-channel signals are decrypted simultaneously through an electronic un-locking processing with N concurrent outputs of decrypted signals streams, or N sub-channel signals,

an array of N sub-channel data streams, configured as an array of concurrently retrieved M data streams through a wavefront de-multiplexing process, where M>

1 and N is no less than M.

15. The Karaoke data retrieving system of claim 11, wherein an array of M output data streams consisting of M1 audio tracks and M2 video data streams, where M1+M2=M, whereby

there are M1 separable audio tracks, which are generated from combinations of accompanied high fidelity stereo music and artist vocal streams in various languages and/or dialects,

different subsets of M1 audio tracks will serve various applications in playing karaoke such as learning modes, practice modes, and/or playing modes,

a high quality video stream input for back ground videos is divided into M2 video data streams;

so that the required sub-channel bandwidth is reduced by a factor of M2.

16. A novel secured multiple channel satellite communications systems utilizing multiple transponders (1130) concurrently comprising:

a transmit processing (1110) utilizing wavefront multiplexing (101) and a receiving processing (1120) using wavefront de-multiplexing (111) in advanced ground terminals (1110+1120).

17. The multi-channel transmit processing (1110) of claim 16, wherein an array of M input data streams (104);

each with a bandwidth compatible to that of a standard transponder of a satellite (1130), say 36 MHz.

18. The transmit processing (1110) of claim 16, wherein an array of M input data streams (104) configured as an array of concurrent N sub-channel signals (105) through a wavefront multiplexing processing (101) with N-inputs and N-outputs, where M>

1 and N is no less than M, whereby

the remaining N-M inputs (108) to the wavefront multiplexing processing (101) are for diagnostics and are grounded,

N=8, and M=5 in the illustrated example,

an array of N sub-channel signals (105) are encrypted simultaneously through an optional electronic locking processing (102) with N concurrent outputs, consisting of N encrypted signals streams (105),

an array of N encrypted signals streams (105) are individually frequency up-converted to those of various transponders through a bank of frequency up converters (1103),

an array of N signals are power amplified individually and summed together by an output multiplexer (1107),

the summed signal stream is then radiated by a transmit antenna (1109) and sent to various transponders on a satellite (1130) accordingly.

19. A receiving processing (1120) of a satellite ground terminal of claim 16, wherein N data streams radiated from N transponders (1130) are received by a receiving antenna (1119), whereby

an array of encrypted N concurrent signals streams (116) are recovered from received signals by channelization and frequency down conversions from various transponder frequencies to a single IF frequency via a frequency demuxing processor (1117) followed by a bank of frequency down converters (1113),

an array of N sub-channel signals (115) are decrypted simultaneously through an optional electronic un-locking processing (112) with N concurrent outputs of decrypted signals streams, or N sub-channel signals (115),

an array of N sub-channel data streams (115), configured as an array of concurrently retrieved M data streams (114) through a wavefront de-multiplexing process (111), where M>

1 and N is no less than M.

20. Before the WF demuxing processing (111) in claim 19, an adaptive processing is incorporated to compensate for phase and amplitude differentials among the 8 transponders due to propagation and/or unsynchronized clock effects using the diagnostic ports (118) accordance with the invention,

Cost functions (119) are indexed and quantified by a cost function generator (120) based on measurements from the diagnostic ports (118).

An optimization algorithm (121) based on cost minimization is utilized to alter the “

amplitudes and phases”

among the sub-channel signals iteratively.

The implementation of additional amplitudes and phases are through “

weighting”

in the unlocking processor (112).

When the cost functions become zero or below small thresholds, 5 WFs of the five data streams (114) among the 8 sub-channels (115) at the WF demuxer (111) will become orthogonal. The 5 data streams will be reconstituted and appear at the 5 signal outputs (114) of the WF demuxer (111).