Television receiver, mobile apparatus, and network information communication system with notification of decode error by turning on decode flag of TCP/IP header

• US 7,958,530 B2
• Filed: 11/22/2004
• Issued: 06/07/2011
• Est. Priority Date: 12/09/2003
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Fukuda, Tetsu, Aratani, Shuntaro, Yamamoto, Takashi
• Primary Examiner(s): Hirl; Joseph P
• Assistant Examiner(s): RUSTEMEYER, BRETT J
• Application Number:
  US10/992,744
• Publication Number:
  US 20050122391A1
• Time in Patent Office: 2,388 Days
• Field of Search: 725/62, 725/74, 725/78, 725/82, 725/81, 348/452.2, 348/425.2, 370/395.52, 455/3.02, 455/69
• US Class Current: 725/62
• CPC Class Codes: H04H 60/32 Arrangements for monitoring conditions of receiving stations, e.g. malfunction or breakdown of receiving stations
• CPC Class Codes: H04H 60/80 characterised by transmission among terminal devices
• CPC Class Codes: H04H 60/85 which are mobile communication networks
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4227 Providing Remote input by a user located remotely from the client device, e.g. at work
• 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 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• CPC Class Codes: H04N 21/440218 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 conversion of standards in analogue television systems H04N7/01
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/47214 for content reservation or setting reminders; for requesting event notification, e.g. of sport results or stock market stock exchange data over packet-switching network H04L12/1804; push services over packet-switching network H04L12/1859; notification of incoming messages in packet switching networks H04L51/224
• CPC Class Codes: H04N 21/6175 involving transmission via Internet broadcast-related systems characterised by the transmission system being the Internet H04H60/82
• CPC Class Codes: H04N 21/6332 directed to client
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613
• CPC Class Codes: H04N 21/654 Transmission by server directed to the client
• CPC Class Codes: H04N 21/6543 for forcing some client operations, e.g. recording remote booting in general G06F9/4416
• CPC Class Codes: H04N 21/658 Transmission by the client directed to the server
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/782 on tape
• CPC Class Codes: H04N 7/173 with two-way working, e.g. subscriber sending a programme selection signal

Abstract

In a system for viewing accumulated contents by using a cellular phone, if an error prevents the content to be viewed, a simple operation is performed to view the rest at home. In accordance with a viewing request from a cellular phone, a television receiver, while sequentially receiving data from D-VHS, converts the data into a format suitable for reception and play in a cellular phone by using an encoder. After this format conversion, the television receiver stores in a play position memory a time stamp indicating a position information of a content and a sequence number used for transmission in TCP/IP. The cellular phone notifies the television receiver of a decode error of a reception data. When receiving a confirmation response of a normal play from the cellular phone, the television receiver clears the data of the play position memory, and otherwise holds the data of the play position memory.

Claims

1. A network information communication system, comprising (a) a display apparatus and (b) an information terminal apparatus which are connected through a network, the system communicating a video image data therebetween,

wherein the information terminal apparatus includes:

(1) a communicating unit which receives the video image data from the display apparatus through the network by TCP/IP communication;

(2) a decode unit which decodes the video image data received by the communicating unit, which outputs the decoded video image data to a display unit of the information terminal apparatus, and which detects an occurrence of a decode error having occurred in the decode unit during receiving of the video image data, wherein the communicating unit notifies the occurrence of the decode error to the display apparatus through the network by turning on a decode flag of a TCP/IP header,

wherein the display apparatus, which is connected with a video player, includes;

(1) a communicating unit which transmits the video image data being played in the video player to the information terminal apparatus by TCP/IP communication;

(2) a storage unit which stores a time stamp of a play position at which the decode error occurs by specifying the time stamp corresponding to a sequence number of the TCP/IP header of which the decode flag is turned on, and which stores a still image corresponding to the time stamp, in response to the notification of the decode error from the information terminal apparatus during the video image data communication;

(3) a display control unit which controls to display the still image stored in the storage unit on a display unit of the display apparatus; and

(4) an operation unit which selects the still image displayed on the display unit in accordance with a user'"'"'s instruction, and

wherein the video image data is played from the play position of the time stamp corresponding to the still image selected by the operation unit.

2. A network information communication system according to claim 1, wherein the storage unit (a) stores a plurality of time stamps respectively corresponding to a plurality of play positions at which the decode error occurs and (b) stores a plurality of still images respectively corresponding to the time stamps, in response to a plurality of times of notifications of the decode error from the information terminal apparatus during the video image data communication, and

wherein the display control unit controls to display the still images stored in the storage unit as an index on the display unit.

3. A network information communication system according to claim 1, wherein the storage unit stores the time stamp and the sequence number to have a correspondence therebetween per each TCP segment and stores the still image corresponding to the time stamp, at a time of transmitting the video image data by the communication unit, and

wherein the storage unit deletes the time stamp and the sequence number not corresponding to the play position at which the decode error occurs.

4. A control method for a network information communication system, the system comprising (a) a display apparatus and (b) an information terminal apparatus which are connected through a network, the system communicating video image data therebetween, wherein the control method includes steps of:

receiving the video image data from the display apparatus through the network;

decoding the video image data received in the receiving step and outputting the decoded video image data to a display for displaying;

detecting an occurrence of a decode error having occurred in the information terminal apparatus during receiving of the video image data,

notifying the occurrence of the decode error to the display apparatus through the network by turning on a decode flag of a TCP/IP header;

storing, in the display apparatus, a time stamp of a play position at which the decode error occurs by specifying the time stamp corresponding to a sequence number of the TCP/IP header of which the decode flag is turned on, and a still image corresponding to the time stamp, in response to the notification of the decode error from the information terminal apparatus during the video image data communication;

displaying, on a display unit of the display apparatus, the still image stored in the storing step; and

playing, in response to selecting the still image displayed on the display unit, by a video player connected with the display apparatus, the video image data from the play position of the time stamp corresponding to the still image selected.

5. A control method according to claim 4, wherein during the storing step, (a) a plurality of time stamps are stored respectively corresponding to a plurality of play positions at which the decode error occurs and (b) a plurality of still images are stored respectively corresponding to the time stamps, in response to a plurality of times of notifications of the decode error from the information terminal apparatus during the video image data communication, and

wherein, during the displaying step, the still images stored in the storage unit are controlled to be displayed as an index on the display unit.

6. A control method according to claim 4, wherein during the storage step, the time stamp and the sequence number are stored to have a correspondence therebetween per each TCP segment, and the still image is stored corresponding to the time stamp, at a time of transmitting the video image data during the communication step, and

wherein during the storing step, the time stamp and the sequence number not corresponding to the play position at which the decode error occurs are deleted.