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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 />

119

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