EP0351230A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Radio communication apparatus having an improved signal to noise ratio
Assignee: NEC Corp
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Filing: 1989-07-14
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Granted: —
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Expires: 2009-07-14
Abstract
Abstract In a radio paging receiver comprising a receiving section (11), a decoder section (12), and a CPU (13) for distinguishing a specific one of a plurality of call signals and processing a specific message signal succeeding the specific call signal into a processed message signal, the receiving section is intermittently put into operation. The decoder section is put into operation in accordance with a first clock signal which is supplied from a first clock generator (16). A switching circuit (20) selectively connects the CPU with the first clock generator and a second clock generator (17). More particularly, the CPU is put into operation in accordance with a second clock signal which is supplied from the second generator when the receiving section does not operate. The frequency of the second clock signal is much higher than that of the first clock signal. Therefore, the CPU processes the specific message signal into the processed message signal at a rapid processing speed in accordance with the second clock signal when the receiving section is not put into operation.
Inventors
- 👤 Toshifumi C/O Nec Corporation Sato
- 👤 Motoki C/O Nec Corporation Ide
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 08:09
CPC Classifications
H; H04; H04B; H04B5/00; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0225; H04W52/0245; H04B7/00; H04B7/24; H04B7/26; H04W88/00; H04W88/02; H04W88/022; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
In a radio communication apparatus comprising receiving means intermittently put into operation for receiving a plurality of call signals and a plurality of additional signals succeeding said call signals, respectively, distinguishing means connected to said receiving means for distinguishing a specific one of said call signals specific to said apparatus to receive a specific additional signal succeeding said specific call signal among said plurality of additional signals, processing means connected to said distinguishing means for processing said specific additional signal into a processed additional signal, and operating means for operating said distinguishing means and said processing means, the improvement wherein said operating means comprises: first clock generating means for generating a first clock signal having a first frequency; second clock generating means for generating a second clock signal having a second frequency higher than said first frequency; first supplying means for supplying said distinguishing means with said first clock signal to operate said distinguishing means; and second supplying means for supplying said processing means with either said first clock signal or said second clock signal and for suppressing said clock signal at least when said receiving means operates.
Claim 2
Dependent Claim
188 words
In a radio communication apparatus comprising receiving means intermittently put into operation for receiving a plurality of call signals and a plurality of additional signals succeeding said call signals, respectively, distinguishing means connected to said receiving means for distinguishing a specific one of said call signals specific to said apparatus to receive a specific additional signal succeeding said specific call signal among said plurality of additional signals, processing means connected to said distinguishing means for processing said specific additional signal into a processed additional signal, and operating means for operating said distinguishing means and said processing means, the improvement wherein said operating means comprises: first clock generating means for generating a first clock signal having a first frequency; second clock generating means for generating a second clock signal having a second frequency higher than said first frequency; first supplying means for supplying said distinguishing means with said first clock signal to operate said distinguishing means; and second supplying means for supplying said processing means with either said first clock signal or said second clock signal and for suppressing said clock signal at least when said receiving means operates.
Claim 3
Dependent Claim
151 words
A radio communication apparatus as claimed in Claim 1, said apparatus comprising operating signal producing means for intermittently producing an operating signal for use in putting said receiving means into operation, wherein: said apparatus further comprises: delaying means for delaying said operating signal with a predetermined time duration to produce a delayed operating signal; switching signal producing means for producing a switching signal in response to said operating signal and said delayed operating signal; and stand-by signal producing means connected to said distinguishing means for producing a stand-by signal indicative of reception of said specific additional signal when said distinguishing means distinguishes said specific one of said call signals; said second supplying means comprising: driving means responsive to said operating signal and said stand-by signal for driving said second clock generating means; and switching means responsive to said switching signal for connecting said second clock generating means to said processing means.
Claim 4
Dependent Claim
108 words
A radio communication apparatus as claimed in Claim 1, said apparatus comprising operating signal producing means for intermittently producing an operating signal for use in putting said receiving means into operation, wherein: said apparatus further comprises: driving signal producing means for producing a driving signal for use in driving said second clock generating means when said operating signal producing means stops producing said operating signal; and switching signal producing means responsive to said operating signal for producing a switching signal after a predetermined time duration; said second supplying means comprises: switching means responsive to said switching signal for connecting said second clock generating means to said processing means.
References Cited (Backward Citations)
No citation records indexed.
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