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US6002999A
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Interface apparatus and method between a selector and a plurality of vocoders in a mobile communication system
Assignee: Pantech Co Ltd
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Filing: 1996-04-25
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Granted: 1999-12-14
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Expires: 2016-04-25
Abstract
Abstract An interface apparatus and method for interfacing between a selector and a plurality of vocoders in a mobile communication system includes a main processor contained in the selector; a transmitting/receiving frame tick generator for generating a transmitting/receiving frame tick every 20 msec, to be supplied to the main processor; a buffer operation adjustor for enabling and disabling a selected buffer out of 15 buffers according to a control signal received from the main processor; a plurality of buffers connected one by one to a plurality of vocoding modules, for operating according to the control of the buffer operation adjustor. The plurality of vocoders for coding and decoding a voice signal.
Inventors
- 👤 Jin Soo Han
- 👤 Byong Jin Cho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:53
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04B7/216; H04W; H04W88/00; H04W88/18; H04W88/181
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
An interface apparatus between a selector and a plurality of vocoders in a mobile communication system, said interface apparatus comprising: a main processor contained in said selector; a transmitting/receiving frame tick generator for generating a transmitting/receiving frame tick every 20 msec, to be supplied to said main processor; a buffer operation adjustor for enabling and disabling a selected buffer out of a plurality of buffers according to a control signal received from said main processor, wherein each buffer of said plurality of buffers is connected to a vocoding module within a plurality of vocoders; and said plurality of vocoders for coding and decoding a voice signal.
Claim 2
Dependent Claim
106 words
An interface apparatus between a selector and a plurality of vocoders in a mobile communication system, said interface apparatus comprising: a main processor contained in said selector; a transmitting/receiving frame tick generator for generating a transmitting/receiving frame tick every 20 msec, to be supplied to said main processor; a buffer operation adjustor for enabling and disabling a selected buffer out of a plurality of buffers according to a control signal received from said main processor, wherein each buffer of said plurality of buffers is connected to a vocoding module within a plurality of vocoders; and said plurality of vocoders for coding and decoding a voice signal.
Claim 3
Dependent Claim
38 words
The interface apparatus of claim 1 wherein said buffer operation adjuster enables and disables said selected buffer out of a plurality of buffers by disabling the selected buffer if data is transmitted and enabling the next corresponding buffer.
Claim 4
Dependent Claim
22 words
The interface apparatus of claim 1 wherein the vocoder corresponding to the disabled buffer is are maintained at a high impedance state.
Claim 5
Dependent Claim
18 words
The interface apparatus of claim 1 further comprising a data bus directly connected to each of said buffers.
Claim 6
Independent Claim
99 words
A method for interfacing between a selector and a plurality of vocoders in a mobile communication system, wherein said method comprises: (a) selecting a vocoder from a plurality of vocoding modules via the main processor of a selector, wherein said selector main processor does not access said vocoder directly but rather activates a buffer connected through a vocoding module to a corresponding vocoder; and (b) maintaining other vocoders at a high impedance state, thereby allowing access to said plurality of vocoding modules by said selector main processor without the need for a bus arbitration circuit to prevent a collision.
Claim 7
Independent Claim
99 words
A method for interfacing between a selector and a plurality of vocoders in a mobile communication system, wherein said method comprises: (a) selecting a vocoder from a plurality of vocoding modules via the main processor of a selector, wherein said selector main processor does not access said vocoder directly but rather activates a buffer connected through a vocoding module to a corresponding vocoder; and (b) maintaining other vocoders at a high impedance state, thereby allowing access to said plurality of vocoding modules by said selector main processor without the need for a bus arbitration circuit to prevent a collision.
Claim 8
Dependent Claim
200 words
An interface method between a selector and a plurality of vocoders, according to claim 5, wherein the process of accessing a corresponding vocoder by said main processor comprises the steps of: (a) writing byte-length data from a central processing unit of said main processor, into said vocoder; (b) transmitting a signal, from said vocoder, indicating that a parallel port register is not in a ready-to-receive state, clearing an interior status register and waiting until said central processing unit accesses said vocoder; (c) transmitting a ready-to-receive signal from said vocoder and receiving other data into said vocoder, when there is dummy access from said central processing unit; (d) returning to an initial state, generating a response packet from said vocoder, for a command packet, clearing said interior status register and waiting until said central processing unit accesses said vocoder, when said command packet is received; (e) transmitting a ready-to-transmit signal from said vocoder and waiting until said central processing unit receives said ready-to-transmit signal from said vocoder, when there is dummy access from said central processing unit; and (f) transmitting said response packet from said vocoder and returning to the initial state, if said central processing unit receives said ready-to-transmit signal.
Claim 9
Dependent Claim
15 words
The method of claim 5 wherein said buffer is activated by a buffer operation adjuster.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-13 | 2003-06-14 | 2003-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-13 | 2007-06-14 | 2007-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-13 | 2011-06-14 | 2011-12-14 | $7700.00 | Window Closed / Lapsed |