Multiplex data transmitting and receiving equipment

• US 6,556,546 B1
• Filed: 07/23/1998
• Issued: 04/29/2003
• Est. Priority Date: 07/23/1997
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Uenaka, Hiroyuki, Kitaura, Hiromu, Kondo, Satoshi, Takeda, Hidetoshi, Mitsui, Yoshitaka, Maeda, Akiyoshi
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): Pezzlo, John
• Application Number:
  US09/121,110
• Time in Patent Office: 1,741 Days
• Field of Search: 370/465, 370/313, 370/486, 370/282, 348/385, 348/584, 345/329, 345/302, 709/218, 709/217, 386/95, 725/147, 725/105, 725/86, 725/76, 725/114, 725/116, 700/94, 382/251
• US Class Current: 370/282
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: H04L 12/40058 Isochronous transmission
• CPC Class Codes: H04L 12/40071 Packet processing; Packet format adaptation of digital video signals for transport over a specific network H04N21/2381, H04N21/4363, H04N21/4381; packet switches H04L49/00; intermediate storage or scheduling H04L49/90
• CPC Class Codes: H04L 12/40117 Interconnection of audio or video/imaging devices home automation networks H04L12/2803; bitstream network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04L 12/64 Hybrid switching systems
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/4363 Adapting the video stream to a specific local network, e.g. a Bluetooth® network
• CPC Class Codes: H04N 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• CPC Class Codes: H04N 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65
• CPC Class Codes: H04N 7/52 Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal assembling of a multiplex stream by combining a video stream with other content or additional data, remultiplexing of multiplex streams, insertion of stuffing bits into the multiplex stream, assembling of a packetised elementary stream at server side H04N21/236; disassembling of a multiplex stream, remultiplexing of multiplex streams, extraction or processing of Service Information, disassembling of packetised elementary stream at client side H04N21/434

Abstract

In transmission and reception of signals in which audio data and management information used in playback are mingled, such as the data recorded in DVD or other recording media, this is to present means for separating the information into video and audio data and management information used in playback, so that the reception side can make use of various playback functions, such as a playback of original picture and sound information, a change of playback procedure, and a selection of playback information. At the transmission side, the data packet transforming means generates a first packet stream from transmission data. Consequently, the transmission packet generating means inserts packets generated from the playback management information by playback management information packet transforming means into the first packet stream at a specified rate, and generates a second packet stream. This is transmitted by using communication media as designated in IEEE1394 or the like. At the reception side, the signal acquired in the receiving means is separated into a packet stream of data and packets of playback management information in the packet identification means, so that the playback data is restored from the packet stream of data on the basis of the management information.

Claims

1. Multiplex data transmitting equipment comprising:

data packet transforming means for transforming input transmission data into a packet of transmission format suited to transmission in a band acquired in communication media;

playback management information packet transforming means for transforming playback management information for utilizing said transmission data into a packet of transmission format suited to transmission in said acquired band;

request signal receiving means for receiving a signal requesting an output of playback management information packet in other band than said acquired band, or receiving a signal requesting a change of rate of inserting the packets of said playback management information obtained in the playback management information packet transforming means into the first packet stream from the transmission data generated in the data packet transforming means;

transmission packet generating means for generating a second packet stream wherein packets of data and packets of playback management information are mingled by starting an insertion of packets of said playback management information obtained in said playback management information packet transforming means into the first packet stream from said transmission data generated in said data packet transforming means depending on the request from the request signal receiving means, or inserting the packets of said playback management information at a requested rate; and

transmitting means for transmitting the second packet stream obtained in said transmission packet generating means in said acquired band.

2. Multiplex data receiving equipment comprising:

receiving means for receiving input reception data in a band acquired in communication media;

packet identification means for identifying and separating a packet stream of data and packet of playback management information from the packet stream of reception data received in said receiving means, and issuing individually;

central processing means for generating management information for managing playback of a packet stream of data in said reception data by using the playback management information packet issued from said packet identification means, and generating a signal for requesting a setting change of transmission relating to the playback management information packet in said reception data at the transmission side for issuing said reception data;

transmitting means for transmitting a signal requesting setting change of said reception data generated in said central processing means by using other band than said acquired band to the transmission side of said reception data;

data storage means for storing a packet stream of data issued from said packet identification means, and controlling the output by using the management information generated in said central processing means; and

played-back data generating means for generating a played-back data stream from the output of said data storage means by using the management information generated in said central processing means.

3. Multiplex data receiving equipment of claim 2, wherein the signal requesting setting change of transmission relating to the playback management information packet in the reception data generated in the central processing means has a function of requesting at least one of a request of increase or decrease in the number of bands acquired in the communication media, a request of change of rate of inserting packets of playback management information into the packet stream of data, and a request of start or stop of insertion of packets of playback management information into the packet stream of data.