AU761999B2 - Replaceable signal cable making a sound-controlled or externally dialed hand-free system universally compatible with all types of cellular phones - Google Patents

Description

AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION NAME OF APPLICANT(S): E-Lead Electronic Co., Ltd.

ADDRESS FOR SERVICE: DAVIES COLLISON CAVE Patent Attorneys 1 Little Collins Street, Melbourne, 3000.

INVENTION TITLE: Replaceable signal cable making a sound-controlled or externally dialed hand-free system universally compatible with all types of cellular phones The following statement is a full description of this invention, including the best method of performing it known to me/us:- 1 2 3 4 BACKGROUND OF THE INVENTION 6 7 The present invention relates to a replaceable signal cable for connection 8 of a specific type of cellular phone to a sound controlled or externally dialed hand- 9 free system. It enables the hand-free system to be adapted for universal use on all types of cellular phones by simple selection of a proper signal cable in use. In other 11 words, it relates more particularly to a signal cable for a hand-free system, which can 12 be selectively replaced with ease so as to make all types of cellular phones universally 13 adapted to one single hand-free system. The signal cable is equipped with a first 14 connecting plug coupled with a cellular phone and a second connecting plug connected to a hand-free system. A dial-decoding IC or circuitry housed in either the o. S16 first connecting plug for a cellular phone or the second connecting plug for a hand- 17 free system is adopted according to codes set by a standard communication protocol 18 for each type of cellular phone. So, simple replacement of a signal cable permits a 19 hand-free system to be universally applicable to all kinds of cellular phones.

Usually a signal cable is adapted for use between a sound-controlled or 21 externally dialed hand-free system and a particular type of cellular phone operated on 22 codes defined by a specific communication protocol for cellular phones. To make a 23 sound-controlled or externally dialed hand-free system compatible with a cellular 24 phone, communication codes transmitted from the cellular phone must be decoded with success by the hand-free system. To permit a sound-controlled or externally 26 dialed hand-free system to be universally adapted for all types of cellular phones 27 operated on different code protocols, a replaceable signal cable which is adapted for 1 one specific type of cellular phone is developed. Such a signal cable must be 2 selectively substituted with ease so as to make a sound-controlled or externally dialed 3 hand-free system universally compatible with all types of cellular phones.

4 Cellular phones have been widely used by people all over the world, and in modern big cities, a very high percentage of people carry a cellular phone all around.

6 Multiple types of cellular phones provided with various functions have been marketed 7 at an astounding speed, and their related peripheral equipment is also developed at the 8 same pace and sold on markets everywhere. Hand-free system for use in a vehicle is 9 the hottest commercial item in recent years. It is widely accepted by consumers as a result of consideration of driving safety and convenience of use in practical operation 11 of a cellular phone in a moving vehicle. The phenomena is described in a term of 12 "communication on move by people. This hand-free system is not ideal enough to 13 make driving that safe when operating a cellular phone in spite of its facility brought 14 to drivers. There are still hidden hazards in driving when using a cellular phone, 15 especially dialing a cellular phone in driving. To solve such a problem, a sound- 16 controlled dial system or a dial keyboard mounted to a steering wheel for dialing 17 purpose is developed. However, the conventional sound-controlled or externally 18 dialed hand-free system has the following disadvantages in practical use.

19 1. Different types of cellular phones, or cellular phones produced by various makers 20 adopt codes defined by different communication protocols, the dialing codes 21 associated with the dial keyboards for 0, 1, SEND, END and etc. are varied 22 from one cellular phone to another. So, makers must produce one particular sound- 23 controlled or externally dialed hand-free system for each type of cellular phone 24 individually. This makes production cost high and stock house full of various kinds of hand-free systems.

P: pcr\sb42055- I rp..do-18/02/03 -3- 2. One family may have more than one cellular phone among its members, more than one type of hand-free systems must be purchased. When a cellular phone is traded for a new one, a new hand-free system must be set again, thus making unnecessary waste of money.

3. Vehicles designed with the idea of "communication on move", a hand-free system is inevitably installed in the vehicles as a standard facility and operates in combination with a vehicle's audio stereo system. So, if the problem of compatibility of a hand-free system with a cellular phone can not be tackled, a driver's cellular phone is not compatible with a vehicle's hand-free system, he or she is not able to benefit from the convenience of such an equipment.

The inventor noticing this disadvantage of a conventional sound-controlled or externally dialed hand-free system came up with a signal cable having a dial-decoding IC or circuitry integrally housed therein for each individual cellular phone in combination with a sound-controlled or externally dialed hand-free system. Thereby simple replacement of signal cables permits the sound-controlled or externally dialed hand-free system to be universally adapted for all types of cellular phones.

SUMMARY OF THE INVENTION The present invention provides a replaceable signal cable for connection of a, sound-controlled or externally dialed hand-free system to a cellular telephone, comprising a flexible cord, a first connecting plug disposed at one end of said cord for registration with a signal output socket of the cellular telephone, and a second connecting plug disposed at another end of said cord for coupling to the sound-controlled or externally dialed hand-free system; wherein said signal cable has a dial decoding IC or circuitry housed in said first connecting plug or said second connecting plug for converting standard communication protocol codes, such as 0, 1, SEND, END etc. adopted by said sound-controlled or externally dialed hand-free system to compatible communication protocol codes (standing for 0, 1, SEND, END) defined for said cellular telephone respectively, whereby said sound-controlled or externally dialed hand-free system can be universally used by all types of cellular phones by simple selection of one specific type of said signal cable.

A preferred embodiment relates to a replaceable signal cable each having a specific P:peb42055-O01 rmrp..d~-1/02/03 -4dial-decoding IC or circuitry integrally housed therein, preferably in combination with a sound-controlled or externally dialed hand-free system. Each signal cable is adapted for each type of cellular phone whereby simple selection of a proper signal cable for each type of cellular phone which is operated on codes set according to different international communication protocols for cellular phones. Thus, making a hand-free system universally adapted for all types of cellular phones becomes possible.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing an embodiment of the present invention in combination with a sound controlled hand-free system.

Fig. 2 is a block diagram showing the operational connection of an embodiment of the present invention to a sound controlled hand-free system.

Fig. 3 is a block diagram showing an embodiment of the present invention in combination with an external dialing means.

Fig. 4 shows an external dialing means in use in an embodiment of the present invention.

:Fig. 5 shows one connecting plug of the signal cable of an embodiment of the present invention internally equipped with a dial-decoding IC or circuitry.

S 20 Fig. 6 shows another connecting plug of the signal cable of an embodiment of the present invention internally equipped with a dial-decoding IC or circuitry.

Fig. 7 shows a receiving box disposed between two connecting plugs of the signal cable of an embodiment of the present invention.

Fig. 8 is a diagram showing an embodiment of the present invention in combination with a vehicle's audio stereo system to display messages.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to Figs. 1, 2 and 3, it shows the signal cable 1 of the present invention is used in combination with a sound controlled or external dialing hand-free 1 system 3. The signal cable 1 has a flexible cord 11 equipped with at one end a first 2 connecting plug 12 defined in conformance to an signal output socket 21 of a cellular 3 phone 2. The signal cable 1 is also provided with at an opposite end thereof a second 4 connecting plug 13 in registration with a socket of a hand-free system 3. The first connecting plug 12 has coupling pins 121 in correspondence to the output points of 6 the signal output socket 21.

7 A dial-decoding IC or circuitry 14 is housed in either the first connecting 8 plug 12 registered with a cellular phone or in the second connecting plug 13 coupled 9 to a hand-free system, as shown in Figs. 5, 6. The dial-decoding IC or circuitry 14 in a signal cable can translate standard codes adopted by a sound-controlled or externally 11 dialed hand-free system connected by the signal cable to a cellular phone, such as 12 codes for 0, 1, 2 9, SEND, END and etc. into codes set according to a specific 13 communication protocol for the cellular phone in operation So, for each different 14 type of cellular phone, a specific dial-decoding IC or circuitry is correspondingly 15 provided. However, the codes generally adopted by a hand-free system is set by a 16 standard communication protocol.

17 As described in the proceedings, in case the dial-decoding IC or circuitry 18 14 of the signal cable 1 is used in combination with a hand-free system 3, as shown in 19 Fig. 2. The hand-free system 3 is comprised of a power and charging circuitry 31, 20 amplifier and acoustic quality processing circuitry 32, an acoustic signal control 21 circuitry 33, a sound identification circuitry 34, a sound identification input control 22 a microphone amplifying circuitry 37, a microphone 36 and a speaker 38.

23 Before one uses the hand-free system 3 to perform a phonic dial, setting 24 must first be completed. In other words, the name or a company's title to be dialed to must be first input by means of a microphone 36, then the sound identification input 1 control 35 is utilized to input a corresponding telephone number. In carrying out a 2 phonic dial, a user reads out a name or a company's title via the microphone 36, 3 which will be identified by the sound identification circuitry 34 in match with a pre- 4 input phone number. Then, the number is delivered to the dial-decoding IC or circuitry 14 to be translated into codes specifically adapted for one particular type of 6 cellular phone for dialing operation. So, for each type of a cellular phone, a specific 7 signal cable 1 is equipped. To solve this problem, a dial-decoding IC or circuitry 14 8 can be housed together in the signal cable 1. So, the replacement of a signal cable I of 9 such a kind means a substitute of a dial-decoding IC or circuitry 14 at the same time, making the hand-free system universally applicable to any types of cellular phones.

11 Referring to Figs. 3, 4, it illustrates a signal cable 1 having a dial-decoding 12 IC or circuitry 14 of the present invention in combination with an externally-dialed 13 hand-free system and an external dialing keyboard. When a user dials with a dialing 14 keyboard 9 secured to a steering wheel 6, the dial-decoding IC or circuitry 14 carries 15 out the translation of the dialed number of the cellular phone 2 into codes according to 16 the standard communication protocol codes 39 for cellular phones 2, such as codes for 17 0,1, SEND, END etc.. Therefore, one type of cellular phone is equipped with 18 its own specific signal cable 1. So, the installation of a dial-decoding IC or circuitry 19 14 on a signal cable 1 makes the replacement of the signal cable 1 similar to a S 20 substitute of the dial-decoding IC or circuitry 14 at the same time. Accordingly, such a 21 signal cable structure permits a hand-free system universally applicable to all types of 22 cellular phones.

23 Referring to Fig.7, if space in the first connecting plug 12 connected to a 24 cellular phone or the second connecting plug 13 coupled to a hand-free system is too small to accommodate a dial-decoding IC or circuitry 14 and its associated circuits, a 1 receiving box 15 for housing the dial-decoding IC or circuitry is alternatively placed 2 between the first connecting plug 12 and the second connecting plug 13. This is 3 another embodiment of the present invention.

4 Referring to Fig. 8, one further embodiment of the present invention is illustrated. In all current types of cellular phones, a display screen to show the 6 incoming phone numbers and various kinds of messages is indispensably equipped.

7 However, when a hand-free system is used in a vehicle, a cellular phone is usually 8 placed in a hidden place without clear sight. So, no messages can be viewed. To tackle 9 this problem, a cellular phone 2 can be combined with a vehicle's audio stereo system so as to permit incoming phone numbers to be displayed on LCD display screen 8 or 11 broadcast by way of sound. Now the problem is that most cellular phone systems 12 adopt different communication protocols, it makes universal application of a hand- 13 free system impossible.

14 To find a resolution to this problem, a decoding IC or circuitry 16 is e. 15 integrally housed in a signal cable 1, which is compatible for some types of cellular 16 phones to the proceeding dial-decoding IC or circuitry 14. It operates on the same 17 principle. In other words, the codes defined by a specific communication protocol of 18 the message or incoming phone numbers shown on a display screen of a vehicle's 19 audio stereo system is set as a standard pattern, then a specific decoding IC or S 20 circuitry 16 is designed for each type of cellular phone 2 operated on codes set by 21 different communication protocols whereby codes for 0, 1, END and etc.

22 of the cellular phone 2 are translated into codes of the set standard patterns.

23 Accordingly, by means of standard communication protocol codes 39 messages are 24 displayed on a LCD screen 8 of a vehicle's audio stereo system or broadcast by means of sound. So, each cellular phone 2 is equipped with a specific signal cable 1 for 1 universal connection to a common a hand-free system. Therefore, a decoding IC or 2 circuitry 16 is directly housed in a signal cable 1 in production so as to permit a 3 decoding IC or circuitry 16 to be accordingly replaced when a signal cable 1 is 4 substituted, making universal application of a hand-free system to all cellular phones possible.

6 In summary, the signal cable of the present invention houses a dial- 7 decoding IC or circuitry to convert the codes of a standard communication protocol 8 for a hand-free system, such as codes standing for 0, 1, SEND, END etc., 9 into codes compatible with codes of cellular phones of various types produced based on different communication protocols. Thereby, simple replacement of a signal 11 cable makes a hand-free system universally adapted to all types of cellular phones, 12 making the production cost of hand-free systems lower in one aspect and also saving 13 money for consumers to in purchase of hand-free systems in another aspect.

Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any Sother integer or step or group of integers or steps.

The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that that prior art forms part of the common general knowledge in Australia.

Claims (4)

1. A replaceable signal cable for connection of a sound-controlled or externally dialed hand-free system to a cellular telephone, comprising a flexible cord, a first connecting plug disposed at one end of said cord for registration with a signal output socket of the cellular telephone, and a second connecting plug disposed at another end of said cord for coupling to the sound-controlled or externally dialed hand-free system; wherein said signal cable has a dial decoding IC or circuitry housed in said first connecting plug or said second connecting plug for converting standard communication protocol codes, such as 0, 1, SEND, END etc. adopted by said sound-controlled or externally dialed hand-free system to compatible communication protocol codes (standing for 0, 1, SEND, END) defined for said cellular telephone respectively, whereby said sound-controlled or externally dialed hand-free system can be universally used by all types of cellular phones by simple selection of one specific type of said signal cable.

2. The replaceable signal cable as claimed in claim 1 wherein said signal cable is equipped with a housing box disposed between said first connecting plug and said second connecting plug for housing said dial-decoding IC or circuitry instead of said first or second connecting plug. S

3. The replaceable signal cable as claimed in claim 1 wherein said dial-decoding IC or circuitry (or a different decoding IC or circuitry) can convert communication protocol codes for one of a specific type of cellular phone to set standard communication protocol codes whereby incoming phone numbers or messages can be displayed on a display screen or broadcast via a sound system of a vehicle's audio system. 0 *o *oo o *1 *o *oo P:Nopw~ssb\42055-01 rmp..dm-9/4/03

4. A replaceable cable substantially as hereinbefore described with reference to the accompanying drawings. DATED this 9h day of April, 2003 E-Lead Electr onic Co., Ltd. by DAVIES COLLISON CAVE Patent Attorneys for the Applicant