Requirements for Unity of Application - Japan Patent Office
Requirements for Unity of Application - Japan Patent Office
Requirements for Unity of Application - Japan Patent Office
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[Example 72]<br />
[Title <strong>of</strong> the Invention]<br />
A process <strong>of</strong> transmission <strong>of</strong> television image signals and transmitter-receiver<br />
[Claims]<br />
1. A process <strong>of</strong> television image signal transmission wherein the image signals <strong>for</strong> the center<br />
<strong>of</strong> the image area are expanded along the time base, those in the peripheral area reduced<br />
along the time base, and furthermore the central signals are transmitted on advantageous,<br />
narrow occupied band area, and the signals are restored to their original <strong>for</strong>m upon<br />
reception.<br />
2. A transmitter <strong>of</strong> television image signals comprising linearly correcting the deflections <strong>of</strong><br />
the imaging device, expanding the image center on the time base, and compressing the<br />
peripheral image on the time base be<strong>for</strong>e transmission.<br />
3. A receiver <strong>of</strong> television image signals which comprises having a time base control circuit to<br />
reduce the central image signals and expanding the peripheral image signals upon<br />
reception <strong>of</strong> signals.<br />
[Excerpt from Detail Description <strong>of</strong> the Invention]<br />
In the prior art, the scanning <strong>of</strong> television image, both in television camera as well as in<br />
the image receiving devices, has been effected linearly in both horizontal and vertical<br />
directions, providing a given resolution regardless <strong>of</strong> the position <strong>of</strong> the image within the<br />
display. As a consequence, equipment with increased number <strong>of</strong> scan lines such as enhanced<br />
image television will require up to ten times the frequency band width in order to transmit the<br />
signals, making the transmission <strong>of</strong> the image difficult.<br />
In the invention, taking advantage <strong>of</strong> visual property <strong>of</strong> central and peripheral image<br />
detection, stable transmission <strong>of</strong> enhanced image television signals in a narrow bandwidth is<br />
enabled.<br />
[Explanation]<br />
The transmission and receiving equipment <strong>of</strong> the related inventions (Claim 2 and 3) is<br />
directly used equipment in order to implement expanding on the time base <strong>of</strong> the signals <strong>for</strong><br />
the central portion <strong>of</strong> the image and reducing on the time base <strong>of</strong> the signals <strong>for</strong> the peripheral<br />
portion <strong>of</strong> the image and their restoration which are the new matters <strong>of</strong> the transmission<br />
process <strong>of</strong> the specified invention (Claim 1).<br />
[Concerned Section]<br />
<strong>Patent</strong> Law Section 37(iv).<br />
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