IEEE 1394 Broadcast Image Data Transmission for Tandem Copiers
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Solution Overview
Problem
In tandem image formation using IEEE1394 serial bus, the increased number of digital copiers leads to large consumption of serial bus bandwidth and increased transmission time, causing bottlenecks especially when dealing with large image data, as each copier must separately receive image data, resulting in inefficient data transfer and potential operational disruptions.
Innovation Solution
Implementing a broadcast-like communication method using isochronous transfer or asynchronous stream over the IEEE1394 serial bus, where image data is transmitted once to multiple image forming apparatuses, eliminating the need for individual data transmission and reducing the burden on the serial bus, allowing simultaneous image formation across connected units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual data transmission is used for each digital copier in tandem image formation, then each copier can receive image data, but the consumption of serial bus bandwidth increases significantly and transmission time increases
Solution Approach 1:
The patent merges the data transmission process by implementing a broadcast-like communication method where a single transmission of image data over the IEEE 1394 serial bus is received by multiple digital copiers simultaneously. This eliminates the need for separate individual transmissions to each copier, thereby reducing serial bus bandwidth consumption while ensuring reliable data reception by all participating devices.
2Reliability
If individual data transmission is used for each digital copier, then each copier can receive image data, but the transmission time increases
Solution Approach 1:
The patent combines multiple reception operations into a single transmission event. By using broadcast-like communication, the image data is transmitted once over the serial bus and simultaneously received by multiple digital copiers, thereby significantly reducing the total transmission time compared to sequential individual transmissions while maintaining reliable data reception.
3Productivity
If broadcast like communication is implemented, then serial bus bandwidth consumption is reduced and transmission time decreases, but the communication method becomes more complex
Solution Approach 1:
The patent implements a universal broadcast-like communication mechanism that leverages the existing IEEE 1394 serial bus infrastructure. This approach allows the same communication protocol to serve multiple functions: efficient data distribution to multiple devices, simultaneous image formation, and resource optimization. The solution reuses established isochronous transfer and asynchronous stream modes, avoiding the need for entirely new communication protocols while achieving improved productivity.
Data Source
AI summary
A method of transmitting image data from one node to another in a network includes obtaining image data in the node, transmitting the image data to the other node via an IEEE 1394 serial bus using one of isochronous transfer and asynchronous stream, and controlling the other node to form an image in accordance with the image data.