GB2358104A - PDA having a bending wave loudspeaker - Google Patents

PDA having a bending wave loudspeaker Download PDF

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Publication number
GB2358104A
GB2358104A GB0025397A GB0025397A GB2358104A GB 2358104 A GB2358104 A GB 2358104A GB 0025397 A GB0025397 A GB 0025397A GB 0025397 A GB0025397 A GB 0025397A GB 2358104 A GB2358104 A GB 2358104A
Authority
GB
United Kingdom
Prior art keywords
personal data
data assistant
loudspeaker
acoustic radiator
bending wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0025397A
Other versions
GB0025397D0 (en
Inventor
Neil Simon Owen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NVF Tech Ltd
Original Assignee
New Transducers Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by New Transducers Ltd filed Critical New Transducers Ltd
Publication of GB0025397D0 publication Critical patent/GB0025397D0/en
Publication of GB2358104A publication Critical patent/GB2358104A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1647—Details related to the display arrangement, including those related to the mounting of the display in the housing including at least an additional display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1662—Details related to the integrated keyboard
    • G06F1/1671—Special purpose buttons or auxiliary keyboards, e.g. retractable mini keypads, keypads or buttons that remain accessible at closed laptop
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/1688—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being integrated loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)

Abstract

A personal data assistant 1 adapted for making and receiving voice calls between a user of the personal data assistant and a remote caller, the personal data assistant comprising a transceiver for sending and receiving voice voice calls, a microphone 19 connected to the transceiver so that voice received on the microphone is sent to the remote caller and a loudspeaker 21 integrated in the personal data assistant and connected to the transceiver so that voice received from the remote caller is outputted by the loudspeaker. The loudspeaker 21 may be a bending wave or distributed mode speaker comprising an acoustic radiator 23 capable of supporting bending waves and a transducer 27 mounted on the acoustic radiator to excite bending waves in the acoustic radiator to produce an acoustic output.

Description

2358104 1 TITLE: ELECTRONIC APPARATUS HAVING LOUDSPEAKER
DESCRIPTION
TECHNICAL FIELD
The invention relates to electronic apparatus, particularly to portable computers of the type known as personal data assistants or palmtops.
BACKGROUND ART
Recently, a number of manufacturers have started to sell small devices known as personal data assistants (PDAs) which record diary entries, act as an address book and can have a number of other functions as required. A similar concept is the palmtop computer, which is generally a multi -functional device with a small keyboard that can carry out many of the functions of a larger computer but that is small, light and portable.
The growth of mobile telephony, and in particular cellular telephones, has provided a network that can be used in many locations. This technology has recently resulted in a number of products that combine palm top computers with cellular telephony so that emails can be sent and received by a portable device using wireless 2 communication. The Symbian (trade mark) consortiumis particularly active in this area. Also sold are mobile telephones that have the capability to send and receive email.
However, additional functionality could usefully be incorporated into such personal data assistants, to improve their versatility. It should be noted that in this application the term "personal data assistant" is intended to include palm tops and other similar portable computers.
DISCLOSURE OF INVENTION
According to the invention there is provided a personal data assistant adapted for making and receiving voice calls between a user of the personal data assistant and a remote caller, the personal data assistant comprising a transceiver for sending and receiving voice voice calls, a microphone connected to the transceiver so that voice received on the microphone is sent to the remote caller and a loudspeaker integrated in the personal data assistant and connected to the transceiver so that voice received from the remote caller is outputted by the loudspeaker.
The personal data assistant may be adapted for conference calls between the user of the personal data assistant and more than one remote callers. The transceiver may also be adapted to receive and transmit electronic data or electronic mail. The transceiver may be connected to a mobile telephone network.
3 The loudspeaker may be a bending wave speaker comprising an acoustic radiator capable of supporting bending waves and a transducer mounted on the acoustic radiator to excite bending waves in the acoustic radiator to produce an acoustic output. It is preferred to use as the loudspeaker a resonant bending wave mode loudspeaker having an acoustic radiator and a transducer fixed to the acoustic radiator for exciting resonant bending wave modes. Such a loudspeaker is described in W098/09842 and other patent applications and publications and may be referred to as a distributed mode loudspeaker.
The properties of the acoustic radiator may be chosen to distribute the resonant bending wave modes substantially evenly in frequency. In other words, the properties or parameters, e.g. size, thickness, shape, material etc., of the acoustic radiator may be chosen to smooth peaks in the frequency response caused by "bunching" or clustering of the modes. The resultant distribution of resonant bending wav modes may thus be such that there are substantially minimal clusterings and disparities of spacing.
In particular, the properties of the acoustic radiator may be chosen to distribute the lower frequency resonant bending wave modes substantially evenly in frequency. The distribution of resonant bending wave modes is less dense at lower frequency than at higher frequency and thus the distribution of the lower frequency resonant bending wave modes is particularly 4 important. The lower frequency resonant bending wave modes are preferably the ten to twenty lowest frequency resonant bending wave modes of the acoustic radiator. For an acoustic radiator for use in a personal data assistant, the lower frequency resonant bending wave modes may all be below 2 kHz - IS THIS TRUE? The resonant bending wave modes associated with each conceptual axis of the acoustic radiator may be arranged to be interleaved in frequency. Each conceptual axis has an associated lowest fundamental frequency (conceptual frequency) and higher modes at spaced frequencies. By interleaving the modes associated with each axis, the substantially even distribution may be achieved. There may be two conceptual axes and the axes may be symmetry is axes. For example, for a rectangular acoustic radiator, the axes may be a short and a long axis parallel to a short and a long side of the acoustic radiator respectively. For an elliptical acoustic radiator, the axes may correspond to the major and minor axis of the ellipse. The axes may be orthogonal.
The transducer location may be chosen to couple substantially evenly to the resonant bending wave modes. In particular, the transducer location may be chosen to couple substantially evenly to lower frequency resonant bending wave modes. In other words, the transducer may be mounted at a location spaced away from nodes (or dead spots) of as many lower frequency resonant modes as possible. Thus the transducer may be at a location where the number of vibrationally active resonance anti-nodes is relatively high and conversely the number of resonance nodes is relatively low. Any such location may be used, but the most convenient locations are the nearcentral locations between 38% to 62% along each of the length and width axes of the panel, but off-central. Specific locations found suitable are at 3/7, 4/9 or 5/13 of the distance along the axes; a different ratio for the length axis and the width axis is preferred.
The transducer may be grounded or partially grounded. The transducer may be piezoelectric. A piezoelectric transducer mounted on the casing of the personal data assistant might produce a satisfactory buzzing sound but distributed mode technology as described above may improve the clarity of reproduced speech.
The acoustic radiator may have selected values of certain physical parameters which enable the acoustic radiator to sustain and propagate input vibrational energy in a predetermined frequency range by a plurality_ of resonant bending wave modes in a least one operative area extending transversely of thickness such that the frequencies of the resonant bending wave modes along at least two conceptual axes of the operative area are interleaved and spread so that there are substantially minimal clusterings and disparities of spacings of said frequencies, the acoustic radiator when resonating have at least one site at which the number of vibrationally 6 active resonance anti-nodes is relatively high and a transducer mounted wholly and exclusively on the acoustic radiator at one of said sites on the acoustic radiator, the transducer being capable of vibrating the acoustic radiator in the predetermined frequency range to couple to and excite the resonant bending wave modes in the acoustic radiator and cause the acoustic radiator to resonate and produce an acoustic output.
The acoustic radiator may be in the form of a panel.
The panel may be flat and may be lightweight. The material of the acoustic radiator may be anisotropic or isotropic.
The personal data assistant may have a casing and the loudspeaker may be integrally formed with the casing. In is particular, the panel may be formed integrally with the casing. Alternatively, the loudspeaker may be formed as a separate component and then attached to the casing so that it is integral therewith. The loudspeaker may be attached to the casing by a resilient mounting or alternatively a rigid f ixing.
Preferably the personal data assistant comprises a base and a lid hinged to the base. The loudspeaker may be integrated in the casing of the lid. The loudspeaker may be formed integrally with the casing of the lid.
Alternatively, the loudspeaker may be separately made and subsequently mounted in a suitable space in the lid. The mounting may be either resilient or rigid.
Thus, the acoustic radiator may be integrated in the 7 personal data assistant withoutadding too much to the size and weight of the personal data assistant. In contrast, a conventional pistonic loudspeaker is likely to add too much to the size and weight of the personal data assistant to be practical in portable applications.
The loudspeaker may be a combined loudspeaker and microphone system, thus eliminating the need for a separate microphone.
The personal data assistant may further comprise a data-inputting device, for example, in the form of an alphanumeric keyboard or alternatively in the form of a touch sensitive screen. Data inputted in to the personal data assistant may be visible in a display screen. The display screen may be integrated into the lid of the is personal data assistant and may only be visible when the lid is opened. The display screen may display information relating to the telephone call, e.g. name, number and other details relating to the remote caller(s) The transceiver may also be adapted to receive video information enabling video images of the remote caller to be displayed in the display screen.
The personal data assistant may further comprise a call display for displaying information relating to the telephone call. The call display may be mounted externally on the casing of the personal data assistant so that information relating to the call is visible. In particular, for personal data assistants comprising a lid, so that information relating to the call is visible when 8 the lid is closed. The call display may be a conventional liquid crystal display.
The personal data assistant may further comprise a connector button such that the user may accept an incoming call simply by pressing the connector button. The connector button may be mounted externally on the casing of the personal data assistant so that the connector button is easily accessible. In particular, for personal data assistants comprising a lid, so that the connector button is accessible when the lid is closed.
In the case that both the connector button and call display are mounted on the outside of the personal data assistant, there is no need for the user to open the personal data assistant to make and receive telephone calls. However, the call display and the connector button, may be omitted if not required; their functionality may be incorporated into the display screen and the datainputting device. BRIEF DESCRIPTION OF DRAWINGS 20 For a better understanding of the invention a specific embodiment will now be described, purely by way of example, with reference to the accompanying drawings, in which Figure 1 shows a perspective view of an embodiment of a personal data assistant in its closed configuration, Figure 2 shows a perspective view of the embodiment of Figure 1 in its open configuration, and Figure 3 illustrates the distributed mode 9 loudspeaker. BEST MODES FOR CARRYING OUT THE INVENTION Figures 1 and 2 show a personal data assistant 1 having a casing 3 comprising a lid 5 attached to a base 7 by a hinge 9. The lid 5 can be moved f rom a closed position (Fig. 1) adjacent to the base 7 to an open position (Fig. 2).
The inside of the base 7 contains a keyboard 11 for inputting data into the personal data assistant. The inside of the lid 5 comprises a display screen 13 for displaying information contained within the personal data assistant. When the lid is opened the personal data assistant can function as a conventional personal data assistant for example, for storage and manipulation of is inputted data.
The outside of the base 7 also includes a connector button 15, a microphone 19 and a call display 17 which is implemented as a conventional liquid crystal display. The base contains a transceiver for sending and receiving voice and data telephone calls. Such calls may be transmitted over a mobile telephone network.
A loudspeaker 21 is integrated in the lid 5 by being integrally formed with it. Figure 3 shows the features of the loudspeaker more clearly. The loudspeaker has a panel 23 defined by ribs 25 integral with the lid 5. The panel 23 has its properties, for example its geometric shape, chosen so that the resonant bending wave modes in a predetermined frequency range are as evenly distributed in frequency as is practicable. This may be done by arranging the modes associated with the length of the personal data assistant to be interleaved with those associated with the width of the personal data assistant.
A transducer 27 is mounted on the panel 23, close to but not at its centre, to excite it to produce an acoustic output. The transducer is mounted at a location on the panel to couple substantially evenly to resonant bending wave modes in the panel. Such a loudspeaker 21 is described in W098/09842 and other patent applications and publications and may be referred to as a distributed mode loudspeaker.
The personal data assistant may function as a conference telephone as follows:
is a) When an incoming voice call is detected, the number is displayed on the call display. b) If the connector button is pressed the incoming call is accepted. c) The personal data assistant ten operates as a loudspeaker telephone using the loudspeaker 21 and the microphone 19. The user's voice is received on themicrophone 19 and sent to the remote caller via the transceiver. Similarly, voice received from the remote caller via the transceiver is outputted by the loudspeaker 21.
The provision of the connector button 15 and call display 17 so that they are visible when the lid is closed makes it possible to operate the unit as a conference 11 telephone when the lid is closed.
INDUSTRIAL APPLICABILITY
The invention thus provides an improved personal data assistant which may be used as a conference telephone.

Claims (17)

12 CLAIMS
1. A personal data assistant adapted for making and receiving voice calls between a user of the personal data assistant and a remote caller, the personal data assistant comprising a transceiver for sending and receiving voice voice calls, a microphone connected to the transceiver so that voice received on the microphone is sent to the remote caller and a loudspeaker integrated in the personal data assistant and connected to the transceiver so that voice received from the remote caller is outputted by the loudspeaker.
2. A personal data assistant according to claim 1, wherein the loudspeaker is a bending wave speaker comprising an acoustic radiator capable of supporting bending waves and a transducer mounted on the acoustic radiator to excite bending waves in the acoustic radiator to produce an acoustic output.
3. A personal data assistant according to claim 1 or claim 2, wherein the loudspeaker is a resonant bending wave mode loudspeaker having an acoustic radiator and a transducer fixed to the acoustic radiator for excitingthe resonant bending wave modes.
4. A personal data assistant according to claim 3, wherein the properties of the acoustic radiator are chosen to distribute the resonant bending wave modes substantially evenly in frequency.
5. A personal data assistant according to claim 3 or claim 4, wherein the resonant bending wave modes 13 associated with a first conceptual axis of the acoustic radiator are arranged to be interleaved in frequency with the resonant bending wave modes associated with a second conceptual axis.
6. A personal data assistant accordin 9 to any one of claims 3 to 5, wherein the transducer location couples substantially evenly to the resonant bending wave modes.
7. A personal data assistant according to any one of claims 2 to 6, wherein the acoustic radiator is in the form of a panel.
8. A personal data assistant according to claim 7, wherein the panel is flat.
9. A personal data assistant according to any one of the preceding claims, wherein the personal data assistant has a casing and the loudspeaker is integrally formed with the casing.
10. A personal data assistant according any one of the preceding claims, wherein the personal data assistant comprises a base and a lid hinged jo the base and the loudspeaker is integrated in the casing of the lid
11. A personal data assistant according to any one of the preceding claims further comprising a data-inputting device and a display screen integrated into the lid of the personal data assistant.
12. A personal data assistant according to any one of the preceding claims further comprising a call display for displaying information relating to the telephone call.
13. A personal data assistant according to claim 12, 14 wherein the call display is mounted externally on the casing of the personal data assistant so that information relating to incoming calls is visible.
14. A personal data assistant according to any one of the preceding claims further comprising a connector button such that the user may accept an incoming call simply by pressing the connector button.
15. A personal data assistant according to claim 14, wherein the connector button is mounted externally on the casing of the personal data assistant so that the connector button is accessible.
16. A personal data assistant according to any one of the preceding claims, wherein the transceiver is adapted to receive video information enabling video images of the remote caller to be displayed in the display screen.
17. A personal data assistant according to any one of the preceding claims, further adapted for conference calls between the user of the personal data assistant and more than one remote callers.
GB0025397A 1999-10-19 2000-10-17 PDA having a bending wave loudspeaker Withdrawn GB2358104A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9924643.1A GB9924643D0 (en) 1999-10-19 1999-10-19 Electronic apparatus containing loudspeaker

Publications (2)

Publication Number Publication Date
GB0025397D0 GB0025397D0 (en) 2000-11-29
GB2358104A true GB2358104A (en) 2001-07-11

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Family Applications (2)

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GBGB9924643.1A Ceased GB9924643D0 (en) 1999-10-19 1999-10-19 Electronic apparatus containing loudspeaker
GB0025397A Withdrawn GB2358104A (en) 1999-10-19 2000-10-17 PDA having a bending wave loudspeaker

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9924643.1A Ceased GB9924643D0 (en) 1999-10-19 1999-10-19 Electronic apparatus containing loudspeaker

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2284648B1 (en) * 2009-07-10 2014-09-03 BlackBerry Limited Moving control bar for a flip-style wireless communications device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031805A1 (en) * 1994-05-11 1995-11-23 Noise Cancellation Technologies, Inc. Multimedia personal computer with active noise reduction and piezo speakers
WO1996001547A2 (en) * 1994-07-06 1996-01-18 Noise Cancellation Technologies, Inc. Piezo speaker and installation method for laptop personal computer and other multimedia applications
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
US5796854A (en) * 1997-03-04 1998-08-18 Compaq Computer Corp. Thin film speaker apparatus for use in a thin film video monitor device
WO1998043464A1 (en) * 1997-03-22 1998-10-01 New Transducers Limited Personal computing devices comprising a resonant panel loudspeaker
GB2333005A (en) * 1998-01-05 1999-07-07 Siemens Ag A device comprising a computer and integrated telecommunication apparatus
GB2335294A (en) * 1997-12-26 1999-09-15 Matsushita Electric Ind Co Ltd Portable data processor with mobile communication unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031805A1 (en) * 1994-05-11 1995-11-23 Noise Cancellation Technologies, Inc. Multimedia personal computer with active noise reduction and piezo speakers
WO1996001547A2 (en) * 1994-07-06 1996-01-18 Noise Cancellation Technologies, Inc. Piezo speaker and installation method for laptop personal computer and other multimedia applications
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
US5796854A (en) * 1997-03-04 1998-08-18 Compaq Computer Corp. Thin film speaker apparatus for use in a thin film video monitor device
WO1998043464A1 (en) * 1997-03-22 1998-10-01 New Transducers Limited Personal computing devices comprising a resonant panel loudspeaker
GB2335294A (en) * 1997-12-26 1999-09-15 Matsushita Electric Ind Co Ltd Portable data processor with mobile communication unit
GB2333005A (en) * 1998-01-05 1999-07-07 Siemens Ag A device comprising a computer and integrated telecommunication apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2284648B1 (en) * 2009-07-10 2014-09-03 BlackBerry Limited Moving control bar for a flip-style wireless communications device

Also Published As

Publication number Publication date
GB0025397D0 (en) 2000-11-29
GB9924643D0 (en) 1999-12-22

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