Digital multimedia jukebox

• US 7,548,851 B1
• Filed: 10/11/2000
• Issued: 06/16/2009
• Est. Priority Date: 10/12/1999
• Status: Expired due to Fees

• Current Assignee: Perception Digital Technology Limited
• Original Assignee: Perception Digital Technology Limited
• Inventors: Chan, Wing Chau, Chan, Kai Kin, Tang, Jimmy Tai Kwan, Lai, Sai Kit, Ng, Kin Ping, Yung, Chi Wai, Cheng, Roger Shu Kwan, Tsui, Chi Ying, Lau, Jack
• Primary Examiner(s): Opsasnick; Michael N
• Application Number:
  US09/686,574
• Time in Patent Office: 3,170 Days
• Field of Search: 711/111, 704/200, 704/201, 704500-504
• US Class Current: 704/201
• CPC Class Codes: G11B 20/00007 Time or data compression or expansion audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/213 Read-only discs
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/41 Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
• CPC Class Codes: G11B 27/002 Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing; transfer of record carriers from magazine G11B15/68, G11B17/10; G11B17/22
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: G11B 31/00 Arrangements for the associated working of recording or reproducing apparatus with related apparatus with cameras or projectors G03B31/00 ; recording/reproducing of music for electrophonic musical instruments G10H1/0033; automatic arrangements for answering calls or for recording messages for absent subscribers H04M1/64; telephonic communication systems adapted for combination with dictation recording and playback systems H04M11/10; connection of TV recorder with other related apparatus, e.g. TV camera or receiver, in which the TV signal is significantly involved H04N, e.g. H04N23/00, H04N5/765; combination of radio or TV with other apparatus, e.g. with vehicles H05K11/00
• CPC Class Codes: H04S 1/007 in which the audio signals are in digital form data reduction aspects thereof based on psychoacoustics G10L19/02

Abstract

A musical jukebox is disclosed which provides for: fast archiving of songs; a flexible user interface; easy and convenient entry of, access to and/or display of data relating to songs archived by the jukebox; easy and convenient search and locate capabilities for locating, reviewing, retrieving and/or playing songs stored in the jukebox; and low cost relative to the functionality, features, conveniences and user-friendliness provided by the jukebox. Fast of flush archiving of songs (as well as other data and signals) is accomplished by first saving sets of data without compression, which allows the data to be entered quickly, and then, compressing later at an appropriate time. A unique MP3 bit allocation encoding scheme is used to compress data. A unique memory allocation supports fast data archiving. The user interface employs two-way communication between a remote control and the jukebox. A searchable song database is structured to enable very fast searching by music category, and also by title and artist. The jukebox is provided with an on-board song track database to automatically identify new songs input to the jukebox.

Claims

1. A method for storing previously recorded sets of audio tracks in a compressed format in at least one memory device and for later retrieving the set of audio tracks in the compressed format, and for converting the set of audio tracks retrieved in the compressed format into a set of signals in an uncompressed format suitable to be played to sound the respective audio-tracks, the method comprising:

transferring a plurality of sets of audio tracks in the uncompressed format from a first storage device to a second storage device, without compression, and storing the set of audio tracks in the uncompressed format in the second storage device;

compressing the set of audio tracks transferred to and stored in the second storage device in the uncompressed format into the compressed format;

storing the set of audio tracks in the compressed format in the second storage device; and

upon receiving a request for an audio track to be played, retrieving the set of audio tracks in the compressed format and decompressing the set of audio tracks retrieved into signals in the uncompressed format suitable to be played to sound the audio track, wherein the compressing and the decompressing are performed according to a predetermined priority in which decompressing the set of audio tracks retrieved in the compressed format takes priority over compressing a set of audio tracks transferred in the uncompressed format from the first storage device.

2. The method of claim 1 wherein the compressing comprises compressing the set of audio tracks to MP3 format.

3. The method of claim 1, wherein the predetermined priority gives priority to the transferring over the compressing.

4. The method of claim 1, wherein the predetermined priority includes

only compressing the set of audio tracks when there is no pending request for an audio track to be played, and

not compressing and decompressing simultaneously.

5. The method of claim 1 comprising retrieving respective sets of audio tracks in the compressed format only after the respective set of audio tracks in the uncompressed format has been completely transferred to the second storage device, wherein the compressing comprises compressing each set of audio tracks in the uncompressed format that has been retrieved.

6. The method of claim 5, wherein

the transferring of sets of audio tracks in the uncompressed format comprises storing more than one set of audio tracks in the uncompressed format in the second storage device, and

the retrieving of sets of audio tracks in the uncompressed format and the compressing of each set of audio tracks in the uncompressed format that is retrieved comprises retrieving one set of audio tracks at a time in the uncompressed format and compressing one set of audio tracks at a time into the compressed format.

7. A system for receiving sets of signals in an uncompressed format stored on a removable storage device, converting the sets of signals in the uncompressed format to sets of digital signals in a compressed format, and storing the sets of digital signals in the compressed format in at least one memory device, each respective set of signals in the uncompressed format and each set of digital signals in the compressed format representing a respective audio segment, the system comprising:

an input for connecting or reading a removable storage device and through which signals read from the removable storage device are received; and

a processor coupled to a memory device and the input, the processor being programmed to;

store in the memory device a set of signals in the uncompressed format supplied to the processor through the input,

retrieve from the memory device a set of signals in the uncompressed format from the memory device,

convert the set of signals in the uncompressed format that is retrieved into a set of digital signals in the compressed format,

store the set of digital signals in the compressed format in the memory device,

make available, for future storage, memory space in the memory device in which the set of signals in the uncompressed format was stored, after that set of signals in the uncompressed format has been converted to the set of digital signals in the compressed format, and

retrieve a set of digital signals in the compressed format from the memory device and convert the set of digital signals in the compressed format that is retrieved into the uncompressed format suitable to be played to sound a corresponding audio segment, wherein the processor gives priority to converting a set of digital signals in the compressed format and retrieved from the memory device into a set of signals in the uncompressed format over converting a set of signals retrieved from the memory device in the uncompressed format into a set of signals in the compressed format.

8. The system of claim 7 wherein the processor comprises a programmed digital signal processor.

9. The system of claim 7 wherein the processor comprises a programmed digital signal processor and a programmed controller.

10. The system of claim 7, wherein

the memory device comprises a computer readable disk, and

the processor is programmed to store sets of signals in the uncompressed format and sets of digital signals in the compressed format on the disk.

11. The method of claim 7, wherein the predetermined priority includes

only converting a set of digital signals in the uncompressed format to the compressed format when there is no pending request for converting a set of digital signals into the uncompressed format suitable to be played, and

not compressing and decompressing simultaneously.

12. A method of archiving sets of audio signals comprising:

providing a memory device;

dynamically partitioning the memory device into

a first memory area for storing in the compressed format sets of audio signals,

a second memory area for storing in a compressed format sets of audio signals that have been compressed from an uncompressed set of audio signals and that are still stored in an uncompressed format in another memory area of the memory device,

a third memory area for storing, temporarily, in the uncompressed format the sets of audio signals stored in the compressed format in the second memory area, and

a fourth memory area which is a free area for storing sets of audio signals without regard to format;

under control of a processor, transferring to the memory device, from a removable storage device coupled to an input of the processor, a set of audio signals representing an audio segment, without conversion of the set of audio signals to a compressed format; and

only when the processor is not controlling accessing of an audio segment stored in the memory device, retrieving a set of the audio signals transferred to the memory device without conversion to the compressed format, converting the set of audio signals retrieved into the compressed format, and storing the set of audio signals in the compressed format in the second memory area of the memory device.

13. The method of claim 12 comprising erasing from the memory device the set of audio signals transferred to memory device without conversion to the compressed format, after conversion of the set of audio signals to the compressed format, and storing the set of audio signals in the compressed format in the memory device, thereby making available, for future storage, memory space of the third memory area in the memory device in which the set of audio signals in the uncompressed format was stored, after that set of audio signals has been compressed into the compressed format, by transferring that memory space from the third memory area to the fourth memory area.

14. The method of claim 12, wherein the memory device is further divided into a fifth memory area as a buffer area, including temporarily storing a set of audio signals in the uncompressed format in the fifth memory area and retrieving the set of audio signals from the fifth memory area for reproduction and, simultaneously, compressing the set of audio signals into the compressed format.

15. The method of claim 12 wherein converting the set of audio signals retrieved comprises converting at a rate in a range of from one to two times real time.

16. The method of claim 15 wherein the processor comprises a digital signal processor.