 Broadcast information delivering system |
| An object of the invention is to provide a broadcast information delivering system and a wireless ... |
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| Data card connector |
| According to the invention there is provided a data card connector comprising: a housing defining ... |
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| Keyboard with multiple input/output function |
| OF THE PREFERRED EMBODIMENT As shown in FIGS. 1 and 2, the keyboard device with multiple input/... |
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| Antenna array for point-to-point microwave radio system |
| FIG. 1 shows a point-to-point radio system 10 that may be used for communicating information over ... |
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| Location and tracking system |
| What is claimed is: 1. A mobile radio-frequency communication system, comprising: a network of at ... |
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| Bad frame indicator for radio telephone receivers |
| Accordingly, the present invention utilizes four-signal quality metrics to specify the bad frame ... |
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| System and method for application location register routing in a telecommunications network |
| Accordingly, a need has arisen for a solution to the application location register routing problem ... |
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Image data transmission system and method
| Details |
Inventors: Ono, Fumitaka; Sadamatsu, Junichi; Kubota, Hitoshi; Ashizaki, Yoshihiro; Kaneko, Koji; Kotani, Akira; Takahashi, Toshiyuki; Tenda, Yoichi; Tanaka, Atsushi; Ueda, Kunio;
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Vo; Nguyen T.
Assistant Examiner:
Attorney, Agent or Firm: Leydig, Voit & Mayer, Ltd.
An image data transmission system includes mobile transceivers having memories storing image data that is organized in sequential blocks. The mobile transceivers sequentially pass by a stationary transceiver and pause proximate the stationary transceiver. While pausing, a mobile transceiver transmits a block of the image data to the stationary transceiver, which receives and stores the transmitted data. Data transmission is interrupted by movement of the formerly pausing mobile transceiver. The stationary transceiver transmits a pointer signal to a paused mobile transceiver indicating which blocks of image data have been stored in the stationary transceiver so that the mobile transceivers transmit the blocks sequentially until all blocks have been received and stored by the stationary transceiver. The apparatus may be employed in a mass transit system, such as a subway or commuter train, in which the mobile transceivers are mounted in train cars and the stationary transceiver is located at a station. The image data may be used to illuminate electronic displays in the station each time all of the blocks of data have been transmitted to and stored in the stationary transceiver. Thus, the vehicles containing the mobile transceivers function as a transmission line and can provide continually updated data for news and advertisement displays. |
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DETAILED DESCRIPTION It is an object of the present invention to provide a data transmission system and method for distributing image information to receiving means, such as electronic advertisement boards located in places where numerous displays are present, for example, in railroad stations, at low cost and with high reliability.
According to one aspect of the present invention, an image data transmission system comprises a plurality of mobile transceivers, each mobile transceiver including a memory for storing image data organized in sequential blocks; a stationary transceiver including a memory for storing image data received from the mobile transceivers; and control means connected to the stationary transceiver for determining which blocks of image data have been transmitted from the mobile transceivers to and stored in the stationary transceiver.
In a second aspect of the invention, the transmission system includes arrival detection means for detecting arrival and pausing of a mobile transceiver proximate the stationary transceiver and departure detecting means for detecting departure of a mobile transceiver, formerly pausing, from a position proximate the stationary transceiver, the arrival and departure detecting means being connected to the control means.
In yet another aspect of the invention, the control means, in response to detection of arrival and pausing of a mobile transceiver proximate the stationary transceiver by the arrival detecting means, causes the stationary transceiver to transmit a pointer signal to the mobile transceiver indicating which blocks of image data have already been stored in the memory of the stationary transceiver, the pointer signal causing the mobile transceiver to begin transmitting a block of image data stored in the memory of the mobile transceiver, but not in the memory of the stationary transceiver, to the stationary transceiver, the control means interrupting transmission of image data from the mobile transceiver in response to detection of departure of the mobile transceiver from proximate the stationary transceiver by the departure detecting means
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Cell Phones 
